Linear Actuators
User Manuallinak.COM/MEDLINE-CARELINELinear Actuators |2

Contents
Preface����������������������������������������������������������������������������������������������������������������������������������������� 4
GENERAL ASSEMBLY INSTRUCTIONS����������������������������������������������������������������������������������������� 5
DECLARATION OF INCORPORATION OF PARTLY COMPLETED MACHINERY���������������������������� 6
Declaration of incorporation of partly completed machinery������������������������������������������������� 7
Important information��������������������������������������������������������������������������������������������������������������� 8
General warnings����������������������������������������������������������������������������������������������������������������������� 9
General recommendations������������������������������������������������������������������������������������������������������� 12
General warranty periods�������������������������������������������������������������������������������������������������������� 13
Electromagnetic Compatibility (EMC) ������������������������������������������������������������������������������������� 14
EMC Warnings������������������������������������������������������������������������������������������������������������������������ 14
EMC responsibilities for LINAK actuator systems���������������������������������������������������������������������� 15
Electrostatic discharge (ESD)���������������������������������������������������������������������������������������������������� 16
RF transmitter/receiver properties��������������������������������������������������������������������������������������������� 17
FCC and IC Statements������������������������������������������������������������������������������������������������������������ 17
Symbols������������������������������������������������������������������������������������������������������������������������������������� 18
Batteries ������������������������������������������������������������������������������������������������������������������������������������ 20
General battery warnings�������������������������������������������������������������������������������������������������������� 20
Lithium ion batteries���������������������������������������������������������������������������������������������������������������� 21
Lead acid batteries ������������������������������������������������������������������������������������������������������������������ 24
System description�������������������������������������������������������������������������������������������������������������������� 25
Connecting the system������������������������������������������������������������������������������������������������������������� 25
General mounting of actuators����������������������������������������������������������������������������������������������� 26
General environmental conditions������������������������������������������������������������������������������������������ 27
Information on start-up, deinstallation and operation��������������������������������������������������������� 28
Before installation, deinstallation or troubleshooting���������������������������������������������������������������� 28
Before start-up������������������������������������������������������������������������������������������������������������������������ 28
During operation��������������������������������������������������������������������������������������������������������������������� 28
Cleaning������������������������������������������������������������������������������������������������������������������������������������� 29
Cleaning warnings������������������������������������������������������������������������������������������������������������������� 29
IPX6 Washable ������������������������������������������������������������������������������������������������������������������������ 30
Rinsing aids����������������������������������������������������������������������������������������������������������������������������� 31
IPX6 Washable DURA™����������������������������������������������������������������������������������������������������������� 32
Cable wash����������������������������������������������������������������������������������������������������������������������������� 33
General maintenance���������������������������������������������������������������������������������������������������������������� 34
Maintenance of all LINAK actuators����������������������������������������������������������������������������������������� 34
Repair and disposal������������������������������������������������������������������������������������������������������������������� 35
Troubleshooting ����������������������������������������������������������������������������������������������������������������������� 36
LA20 Inline��������������������������������������������������������������������������������������������������������������������������������� 37

Linear Actuators |3

LA23������������������������������������������������������������������������������������������������������������������������������������������� 45
LA24������������������������������������������������������������������������������������������������������������������������������������������� 58
LA27������������������������������������������������������������������������������������������������������������������������������������������� 62
LA28������������������������������������������������������������������������������������������������������������������������������������������� 68
LA28 Compact �������������������������������������������������������������������������������������������������������������������������� 70
LA29������������������������������������������������������������������������������������������������������������������������������������������� 71
LA30������������������������������������������������������������������������������������������������������������������������������������������� 74
LA31������������������������������������������������������������������������������������������������������������������������������������������� 77
LA34������������������������������������������������������������������������������������������������������������������������������������������� 84
LA40������������������������������������������������������������������������������������������������������������������������������������������� 88
LA42������������������������������������������������������������������������������������������������������������������������������������������� 98
LA44������������������������������������������������������������������������������������������������������������������������������������������� 99
Contacts����������������������������������������������������������������������������������������������������������������������������������� 104

Linear Actuators |4

Preface
Dear User,
We are delighted that you have chosen a LINAK® product.
LINAK systems are high-tech products based on many years of experience in the manufacture anddevelopment of actuators, electric control boxes, controls, batteries, accessories and chargers.
This User Manual does not address the end user. It is intended as a source of information for the equipment
or system manufacturer only, and it will tell you how to install, use and maintain your LINAK product/system.
The manufacturer of the end product has the responsibility to provide a User Manual where relevant safety
information from this manual is passed on to the end user.
We are convinced that your LINAK system will give you many years of problem-free operation.
Before our products leave the factory they undergo full function and quality testing. Should you,nevertheless, experience problems with your product/system, you are always welcome to contact your local
supplier.
LINAK subsidiaries and some distributors situated all over the world have authorised service centres, which
are always ready to help you.
LINAK provides a warranty on all products (see warranty section).
This warranty, however, is subject to correct use in accordance with the specifications, maintenance being
done correctly and any repairs being carried out at a service centre, which is authorised to repair LINAK
products.
Changes in installation and use of LINAK systems can affect their operation and durability. The products are
only to be opened by authorised personnel.
This User Manual has been written on the basis of the present technical knowledge. LINAK is constantly
keeping the information updated and we therefore reserve the right to carry out technical modifications.
The introductory pages of this manual may contain information that is not applicable to the technicalproduct pages and are to be seen as general information for all LINAK products.
LINAK A/SLinear Actuators |GENERAL ASSEMBLY INSTRUCTIONS
Please read the following safety information carefully. Ensure that all staff who are to connect, mount, or use the actuator are in possession of thenecessary information and that they have access to this assembly instruction.
Persons who do not have the necessary experience or knowledge of the product/products must not use the product/products. Besides, persons with
reduced physical or mental abilities must not use the product/products, unless they are under surveillance or they have been thoroughly instructed in
the use of the apparatus by a person who is responsible for the safety of these persons. Moreover, children must be under surveillance to ensure thatthey do not play with the product.

Warnings
Failure to comply with these instructions may result in accidents involving serious personal injury.
It is important for everyone who is to connect, install, or use the systems to have the necessary information and access to the User Manual on www.
linak.com.
•

If there is visible damage on the product it must not be installed.

•

If the control box / Twindrive makes unusual noises or smells, switch off the mains voltage immediately.

•

The products must only be used in an environment that corresponds to their IP protection.

•

The cleaners and disinfectants must not be highly alkaline or acidic (pH value must be 6 to 8).

•

Irrespective of the load, the duty cycle stated in the data sheets, must NOT be exceeded.

•

The DESKLINE® systems can only be used in push applications.

•

The control box / Twindrive must only be connected to the voltage stated on the label.

•

System not specified for pull must only be used in push applications.

•

Fastening screws and bolts must be tightened correctly.

•

Do not open the closing device on the Twindrive during operation.

•

Specifications on the label must under no circumstances be exceeded.

•

NOT TO BE OPENED BY UNAUTORISED PERSONNEL.

•

Use only the actuator within specified working limits.

•

Note that during construction of applications, in which the actuator is to be fitted, there must be no risk of personal injury, such as squeezing of
fingers or arms.

•

If irregularities are observed, the actuator must be replaced.

•

If the actuator is used for pull in an application where personal injury can occur, the following is valid: It is the application manufacturer’s
responsibility to incorporate a suitable safety arrangement, which will prevent personal injury from occurring, if the actuator should fail.

•

MEDLINE® & CARELINE® products products are rated to operate at an altitude < 2000 m.

Recommendations
Failure to follow these instructions can result in the actuator being damaged or being destroyed.
•

•

•

•

•

Before you start mounting/dismounting, ensure that the following points are observed:-

The actuator is not in operation.

-

The mains current supply is switched off and the plug has been pulled out.

-

The actuator is free from loads that could be released during this work.

Before you put the actuator into operation, check the following:-

The actuator is mounted correctly as indicated in the relevant user instructions.

-

The equipment can be freely moved over the actuator’s whole working area.

-

The actuator is connected to a mains electricity supply/transformer with the correct voltage and which is dimensioned and adapted tothe actuator in question.

-

Ensure that the voltage applied matches the voltage specified on the actuator label.

-

Ensure that the connection bolts can withstand the wear.

-

Ensure that the connection bolts are secured safely.

During operation-

Listen for unusual sounds and watch out for uneven running. Stop the actuator immediately if anything unusual is observed.

-

Do not side load the actuator.

-

Use only the actuator within the specified working limits.

-

Do not kick or step on the actuator.

When the equipment is not in use-

Switch off the mains supply or pull out the plug in order to prevent unintentional operation.

-

Check regularly the actuator and joints for extraordinary wear.

Note: If the actuator is operated as a hand crank, it must be operated by hand, otherwise there is a risk of overloading the actuator and hereby
damage the actuator.
When changing the cables on a LINAK actuator, it is important that this is done carefully, in order to protect the plugs and pins.
Please ensure that the plug is in the right location and fully pressed in before mounting the cable lid.

GENERAL ASSEMBLY INSTRUCTIONS

5Linear Actuators |6

DECLARATION OF INCORPORATION OF PARTLYCOMPLETED MACHINERYLINAK A/S
Smedevænget 8
DK - 6430 Nordborg

LINAK A/S hereby declares that LINAK DESKLINE® products, characterised by the following models and types:
Control Boxes
Linear Actuators
Lifting Columns
Desk Panels
Wireless Controls
Accessories

CBD6S
DB5, DB6, DB14, LA23, LA31
DL1A, DL2, DL4S, DL5, DL6, DL8, DL9, DL10, DL11, DL12, DL14, DL15, DL16, DL17, DL18, DL19, DL20, DL21,
BASE1, LC1
DPA, DPB, DPH, DPF, DPG, DPT, DP, DP1CS, DPI
HB10, HB20, RFRL
BA001, BLE2LIN, CHUSB, DESK Sensor, DF2, Kick & Click, SLS, SMPS, USB2LIN, WiFi2LIN, DC Connector

LINAK A/S hereby declares that LINAK HOMELINE® products, characterised by the following models and types:
Control Boxes
Linear Actuators
Dual Actuators
Controls
Accessories

CBD6DC
LA10, LA18, LA40 HOMELINE
TD4, TD5
BP10, HB10, HC10, HC20, HC30, HC40
CP, BLE2DC, BLE2LIN, LED Light Rail, MD1, SMPS, WiFi2LIN

LINAK A/S hereby declares that LINAK MEDLINE® & CARELINE® products, characterised by the following models and types:
Control Boxes
Linear Actuators
Lifting Columns
Controls
Accessories

CA20, CA30, CA40, CA63, CAL40, CB6, CB6S MK2, CB6P2, CB8, CB9, CBJ2, CBJ Care, CBJ Home, CO41, CO53,
CO61, CO65, CO71, COL50, OPS, PJ2, PJB4
LA20, LA23, LA27, LA28, LA29, LA30, LA31, LA34, LA40, LA44
BL1, LC1, LC3
ABL, ACC, ACK, ACO, ACOM, ACL, DP, DPH, FS, FS3, FPP, HB30, HB70, HB80, HB100, HB190, HB200, HB400,
HD80, HL70, HL400
BA16, BA18, BA19, BA21, BAJ, BAJL, BAL40, BAL50, CH01, CHJ2, CHL40, CHL50, DJB, MJB2, MJB5 Plus, SLS,
Massage Motor, QLCI2, UBL, UBL2, USB-A Power Adapter

LINAK A/S hereby declares that LINAK TECHLINE® products, characterised by the following models and types:
Linear Actuators
Lifting Columns
Accessories

LA12, LA14, LA23, LA25, LA30, LA33, LA35, LA36, LA37
LC3 IC
FMB

comply with the following parts of the Machinery Directive 2006/42/EC, ANNEX I, Essential health and safety requirements relating to the design andconstruction of machinery: 1.5.1 Electricity supply
The relevant technical documentation is compiled in accordance with part B of Annex VII and this documentation or part hereof will be transmitted
by post or electronically to a reasoned request by the national authorities.
This partly completed machinery must not be put into service until the final machinery into which it is to be incorporated has been
declared in conformity with the provisions of the Machinery Directive 2006/42/EC where appropriate.
Nordborg, 2023-11-06

LINAK A/S
Authorised to compile the relevant technical documentation

Original declaration

DECLARATION OF INCORPORATION OF PARTLY COMPLETED MACHINERY

Copyright© LINAK • 2023-11 • LIT-09-02-001 CJohn Kling, B.Sc.E.E., Certification and Regulatory AffairsLinear Actuators |7

Declaration of incorporation of partly completed machinery

DECLARATION OF INCORPORATION OF PARTLYCOMPLETED MACHINERYLINAK A/S
Smedevænget 8
DK - 6430 Nordborg
LINAK A/S hereby declares that LINAK DESKLINE® products, characterised by the following models and types:
Control Boxes

CBD6S

Linear Actuators

DB5, DB6, DB14, LA23, LA31

Lifting Columns

DL1A, DL2, DL4S, DL5, DL6, DL7, DL8, DL9, DL10, DL11, DL12, DL14, DL15, DL16, DL17, DL18, DL19, DL20, DL21, BASE1, LC1

Desk Panels

DPA, DPB, DPH, DPF, DPG, DPT, DP, DP1CS

Wireless Controls

HB10, HB20, RFRL

Accessories

BA001, BLE2LIN, CHUSB, DESK Sensor, DF2, Kick & Click, SLS, SMPS, USB2LIN, WiFi2LIN

LINAK A/S hereby declares that LINAK HOMELINE® products, characterised by the following models and types:
Control Boxes

CBD6DC

Linear Actuators

LA10, LA18, LA40 HOMELINE

Dual Actuators

TD4, TD5

Controls

BP10, HB10, HC05, HC10, HC20, HC30, HC40

Accessories

CP, BLE2DC, BLE2LIN, DC CONNECTOR, LED Light Rail, MD1, SMPS, WiFi2LIN

LINAK A/S hereby declares that LINAK MEDLINE® & CARELINE® products, characterised by the following models and types:
Control Boxes

CA20, CA30, CA40, CA63, CAL40, CB6, CB6S MK2, CB6P2, CB8, CB9, CBJ-Home, CO53, CO61, CO65, CO71, COL50, OPS, PJ2, PJB4

Linear Actuators

LA20, LA23, LA27 MEDLINE CARELINE , LA28, LA29, LA30, LA31 MEDLINE CARELINE, LA34, LA40 MEDLINE CARELINE, LA44

Lifting Columns

BL1, LC1, LC3

Controls

ABL, ACC, ACK, ACO, ACOM, ACL, DP, DPH, FS, FS3, FPP, HB30, HB70, HB80, HB100, HB190, HB200, HB400, HD80, HL70, HL80, HL400

Accessories

BA16, BA18, BA19, BA21, BAL40, BAL50, CH01, CHL40, CHL50, DJB, MJB2, MJB5 Plus, SLS, Massage Motor, MDI, QLCI2, UBL, UBL2

Linear Actuators

LA12, LA14, LA23, LA25, LA30, LA33, LA35, LA36, LA37

Lifting Columns

LC3 IC

Accessories

FMB

comply with the following parts of the Machinery Directive 2006/42/EC, ANNEX I, Essential health and safety requirements relating to the design and construction of machinery:
1.5.1 Electricity supply
The relevant technical documentation is compiled in accordance with part B of Annex VII and this documentation or part hereof will be transmitted by post or electronically to areasoned request by the national authorities.
This partly completed machinery must not be put into service until the final machinery into which it is to be incorporated has been declared inconformity with the provisions of the Machinery Directive 2006/42/EC where appropriate.

Nordborg,

2022-12-01

LINAK A/SJohn Kling, B.Sc.E.E.
Certification and Regulatory Affairs
Authorized to compile the relevant technical documentation
Original declaration

Copyright© LINAK . 2022.12 . LIT-08-02-001-A . LINAK A/S reserves the right to make technical alterations

LINAK A/S hereby declares that LINAK TECHLINE® products, characterised by the following models and types:

Linear Actuators |8

Important information
LINAK® products, within the scope of this manual, are not classified as medical electrical equipment or systems, nor do they fall within the scope of the EU Medical Device Directive/Regulation or other similar national regulations. The products are components to be built into a piece of medical electrical equipment by amanufacturer.
To support the assessment and certification task of the complete medical electrical equipment or systemworldwide, LINAK provides certification, on a component level, according to the IEC 60601-1, (Medical
electrical equipment – Part 1: General requirements for basic safety and essential performance) as recognised
components by NRTL (Nationally Recognized Testing Laboratories).
Description of the various signs used in this manual:Warnings
Failure to comply with these instructions may result in accidents involving serious personal injury.

Recommendations
Failing to follow these instructions can result in product damage.
Please read the following safety information carefully:
Ensure that all staff who are to connect, mount, or use the actuator system are in possession of thenecessary information and that they have access to these assembly instructions.
Persons who do not have the necessary experience or knowledge of LINAK products should not use these.
Moreover, persons with reduced physical or mental abilities must not use the products, unless they are
under surveillance or they have been thoroughly instructed in the use of the equipment by a person who
is responsible for the safety of these persons. Moreover, children must be under surveillance to ensure thatthey do not play with the product.
Please be aware that LINAK has taken precautions to ensure the safety of the actuator system. The
manufacturer/OEM is responsible for the overall approval of the complete application.
LINAK recommends to use the actuators in push applications rather than pull applications.

LINAK actuators are not to be used for repeated dynamic push-to-pull movements.
For general pull applications or repeated dynamic push-to-pull movements in the application, please contact
LINAK A/S if in doubt.
LINAK actuators and electronics generally fall outside the IEC 60601-1 definition of applied parts and are notmarked as such.
However, assessing the risk whether actuators and electronics can unintentionally come into contact
with the patient, determines that they are subject to the requirements for applied parts. All the relevant
requirements and tests of the standard are carried out as part of the IEC CB* Scheme/NRTL** assessment.
* CB: Certification Body**NRTL: Nationally Recognised Testing Laboratory

Linear Actuators |9General warnings
Failure to comply with these instructions may result in accidents involving serious personal injury:
The medical device manufacturer is responsible for the incorporation of a suitable safety
arrangement, if the actuator or lifting column is used for pull in an application where personal injury
can occur, which will prevent personal injury from occurring in case of actuator failure.
Note that during construction of applications, in which the actuator is to be fitted, there must be no
possibility of personal injury, for example the squeezing of fingers or arms.
The plastic parts in the system cannot tolerate cutting oil.

Assure free space for movement of the application in both directions to avoid a blockade.

The application and actuators are only to be operated by instructed personnel.

In applications with spline function, the blockage by an obstacle when the application is moving
inwards, the removal of the obstacle will cause the load to drop until the spindle hits the nut.
Do not turn the outer tube.

Do not use chemicals.

Inspect the actuator system regularly for damage and wear.

Do not expose LINAK actuator system components to high intensity ultraviolet radiation disinfection
lamps. This may damage the enclosure, supporting parts and cables.
LINAK actuators and electronics are not designed for use within the following fields:• In the presence of a flammable anesthetic mixture with air or with oxygen or nitrous oxide• Planes and other aircrafts• Explosive environments• Nuclear power generation
If faults are observed, the products must be replaced.

Linear Actuators | 10
A LINAK control box, actuator and accessory component must, in the final application, be placed
where it is not exposed to any impact. This is to prevent damage if a passer-by accidentally hits itwith an object or when cleaning the floor with a broom or a mop. On a medical bed e.g. this might
be underneath the mattress support platform. If necessary to mitigate this risk, additional protection
might be required.
To avoid unintended movement, prevent foreign objects or persons from unintentionally activating afootswitch or a hand control at any time, for instance during normal use or maintenance.
If there is visible damage on the product it should not be installed.

If the actuator system makes unusual noise or smells, switch off the mains voltage immediately anddisconnect batteries, if applicable.
The products must only be used in an environment that corresponds to their IP protection class.

The cleaners and disinfectants must not be highly alkaline or acidic (pH value 6-8). See cleaning
section.
Irrespectively of the load, the duty cycle stated on the product label must NOT be exceeded.

The control box must only be connected to the voltage stated on the label.

Systems not specified for pull must only be used in push applications.

Fastening screws and bolts must be tightened correctly.

Specifications on the product label must under no circumstances be exceeded.

NOT TO BE OPENED BY UNAUTHORISED PERSONS.

Only use the actuator within specified working limits.

Linear Actuators | 11
Be aware that during the design of medical devices, the risk of personal injury (for instancesqueezing of fingers or arms) must be minimised.
If irregularities are observed, the actuator must be replaced.

All cables must be mounted in such a way that they are not trapped or exposed to tension or sharp
objects when the application is moved in different directions.

Linear Actuators | 12

General recommendations
Failing to follow these instructions may result in actuator system damage:The duty cycle printed on the actuator system label must always be respected. If exceeded, there isa risk that the actuator system is damaged. Unless otherwise specified on the label, the duty cycle ismax. 10%, max. 2 min. in use followed by 18 min. not in use.
All detachable connections between components must be locked by the cable locking mechanism when applicable.
It is recommended to have options like quick release, manual lowering or similar built into thesystem in case of power loss or system failure or if movement of the system is critical. After service itis recommended to test the system for correct functionality before it is put back into operation.
Prior to assembly/disassembly, ensure that the following points are observed:- The actuator system is not in operation.
- The mains current supply is switched off and the plug has been pulled out.
- Batteries - if applicable - may also power the system.
- Actuators are free from loads that could be released during this work.

Prior to operating the actuator system, check the following:- Actuator system components are correctly mounted as indicated in the product-specific user
instructions.
- The equipment can be operated in its entire intended range of movement.
- Ensure that the load-supporting bolts can withstand the wear.
- Ensure that the load-supporting bolts are secured safely.
During operation:- Listen for unusual sounds and watch out for uneven movement. Stop the actuator system
immediately if anything unusual is observed.
- Do not sideload the actuator.
- Do not step on or kick any LINAK component.
When the equipment is not in use:
- Switch off the mains supply or pull out the plug in order to prevent unintentional operation.

Cables and plugs:- It is important to remove the transport plastic bag before using the cable.
- When changing the cables on a LINAK® actuator system, it is important that this is done carefully inorder to protect the plugs and pins.
- Please ensure that the plug is in the right location and properly inserted before the cable lid ismounted.

Linear Actuators | 13

General warranty periods
As general warranty period, LINAK provides 5 years (60 months) warranty on MEDLINE and CARELINE
products used in beds and medical applications. If MEDLINE and CARELINE products are used in otherapplications, they will be covered by 1½ years (18 months) warranty.
Batteries are covered by a specific product warranty of 12 months.
External products that are not manufactured by LINAK A/S: 12 months are added to the warranty period,for instance for transportation and stocking. Relabelling of these products only takes place, if the production
date exceeds one year from the date of dispatch to the customer.
If there is any doubt whether returned products are covered by the warranty, they are covered by thewarranty. Please use the date of the control box or actuator as reference, if possible.

Linear Actuators | 14

Electromagnetic Compatibility (EMC)
EMC Warnings
Electromagnetic compatibility – general
LINAK® actuator systems bear the CE marking as an attestation of compliance with the EMC Directive
2014/30/EU. The systems are designed to meet all requirements of applicable standards and havebeen tested to meet IEC 60601-1-2 requirements.
Emission:
LINAK Actuator Systems are CISPR 11, Group 1, Class B products, comply with IEC 61000-3-2, Class
A and IEC 61000-3-3 unless stated otherwise in the relevant section of this document.
Immunity:
Test levels are according to Professional Healthcare Facility and Home Healthcare Facility Environment.
Electromagnetic phenomena are evaluated on a system level, with the actuator connected to a LINAK
control box and accessories.
LINAK always recommends to perform verification tests on the final medical device.
Electromagnetic compatibility – third party components
Use of accessories, transducers and cables other than those specified by LINAK could result inincreased electromagnetic emissions or decreased electromagnetic immunity of the actuator system
and result in improper operation.
Electromagnetic compatibility – interference with other equipment in general
Use of the actuator system adjacent to or stacked with other equipment should be avoided as
this could result in improper operation. If such use is necessary, the actuator system and the otherequipment should be observed to verify that they are operating properly.
If the user notes unusual behavior of the actuator system, in particular if such behaviour isintermittent and associated with the standing right next to mobile phones, microwaves and radio
broadcast masts, this could be an indication of electromagnetic interference.
If such behaviour occurs, try to move the actuator system further away from the interfering
equipment.
Electromagnetic compatibility – interference with other equipment, RF communications
Portable RF communication equipment (including peripherals such as antenna cables and externalantennas) should be used at a distance no closer than 30 cm (12 inches) to any part of the actuatorsystem. This also applies to cables specified by the manufacturer. Otherwise, a performancedegradation of this equipment could result.

Linear Actuators | 15

EMC responsibilities for LINAK actuator systems
LINAK verifies the EMC performance of each LINAK product and approves them individually. The LINAK
products can be combined and integrated into many different systems. LINAK also verifies the system EMC
performance on commonly used combinations.
LINAK has certificates in accordance with applicable standards for each product and provides the customers,
who are building the application and integrating these products into systems (systems with control box,
actuators, cables, batteries, etc.), with these certificates.
However, EMC testing of LINAK products in generic LINAK systems is not made in an environment that
corresponds to the specific application environment which differs from the generic testing environment.
There will be differences that can affect the EMC performance in the specific target application.
The customer is responsible for qualifying and approving the complete application including the LINAK
system.
Regulatory standard
LINAK products, being components to be incorporated by a Manufacturer [definition: IEC 60601-1 ed.3.1,
cl. 3.55] into Medical Electrical Equipment [definition: IEC 60601-1 ed.3.1, cl. 3.63], are tested concerning
the EMC phenomena according to the Collateral Standard IEC 60601-1-2 ed. 4.1.
IEC 60601-1-2 ed. 4.1 sets forth the requirements for the electromagnetic compatibility of Medical Electrical
Equipment, ensuring that devices operate safely and effectively within their intended environments.
Compliance with this standard is essential to minimize electromagnetic interference and maintain the
integrity and performance of Medical Devices.
Furthermore, IEC 60601- 1-2 ed. 4.1 states:”This collateral standard recognizes that the Manufacturer has the responsibility to design and perform
Verification of Medical Electrical Equipment and Medical Electrical Systems to meet the requirements of thisCollateral Standard and to disclose information to the Responsible Organization or Operator so that the
Medical Electrical System will remain safe throughout its Expected Service Life.”
Qualification process of a new application
The qualification process for a new application is normally done in cooperation between the customer and
LINAK. LINAK provides the relevant support, competence and documentation needed for the customer’s
overall development plan and test plan for the specific application.
The driver of the qualification process is the customer who has the ultimate application responsibility (MDS).
The customer identifies and specifies the needed testing based on many different parameters (experience,risk management, requirements from standards, etc.).
In many cases, the customer is establishing and verifying tests early in the project to ensure that the approval
process has a low risk of failing when tested in the approval institute.
The customer identifies which tests to make and when they are to be performed in the project to mitigate
the risk of failure in the approval process which also includes EMC testing.

Linear Actuators | 16

Electrostatic discharge (ESD)
LINAK® considers ESD to be an important issue and years of experience have shown that equipment
designed to meet the levels specified in standards might be insufficient to protect electronic equipment incertain enviroments.
1. Handling and mounting electrostatic discharge sensitive devices (ESDS devices).
• Handling of sensitive components shall only take place in an ESD Protected Area (EPA) under protected
and controlled conditions.
• Wrist straps and/or conductive footwear (personal grounding) shall always be used when handling ESDS
devices.
• Sensitive devices shall be protected outside the EPA by the use of ESD protective packaging.
2. Responsibility LINAK/customer• ESDS devices must under no circumstances, during transport, storage, handling, production or mounting
in an application, be exposed to harmfull ESD.
• LINAK can only guarantee the lifetime of ESDS devices if they are handled in the same way fromproduction at LINAK A/S until they are mounted in the manufacturer’s application. It is therefore
important that the ESDS devices are not removed from the ESD protected packaging before they arephysically within the EPA area at the customer premises.
Please refer to EN61340 for further information:
EN61340-5-1, Electrostatics - Protection of electronic devices from electrostatic phenomena - General
requirements
EN61340-5-2, Electrostatics - Protection of electronic devices from electrostatic phenomena - User guideLinear Actuators | 17

RF transmitter/receiver properties
Some LINAK products emit RF-power by intention for communication purposes.
Frequency band of transmission: 2402 MHz - 2480 MHz
Type: BLUETOOTH® Low Energy BLE 4.2
Modulation: GFSK
Maximum Effective Radiated Power (ERP): 10 dBm

FCC and IC Statements
For RF-emitting products (e.g. Bluetooth®, Wi-Fi) intended to be used on the North American continent, thefollowing applies:
FCC statement
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmfulinterference to radio communications. However, there is no guarantee that interference will not occur ina particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct theinterference by one or more of the following measures:- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help
Changes or modifications not expressly approved by the party responsible for compliance could void theuser’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:(1) this device may not cause harmful interference, and(2) this device must accept any interference received, including interference that may cause undesired 		
operation.
IC statement
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science andEconomic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two
conditions:(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired operation of
the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR
d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts delicence. L’exploitation est autorisée aux deux conditions suivantes :(1) L’ appareil ne doit pas produire de brouillage;(2) L’ appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’ encompromettre le fonctionnement.

Linear Actuators | 18

Symbols
The following symbols are used on the LINAK product labels, where applicable:

IEC 60417-5172:
Class II equipment

Compliance to all relevant EC directives

IEC 60417-5840:
Applied part type B

UK Conformity Assessment

IEC 60417-5019:
Class I equipment
Protective earth; protective ground

Regulatory compliance mark:The Australian Safety/EMC Regulations

IEC 60417-5002:
Positioning of cell

Alternating current

ISO 7000-0434A:
Caution, consult accompanying document

Direct current

Electronics scrap

Reduced ETL recognised component mark for
Canada and the United States.
X: The mark is always accompanied by a control
number of 6 or 7 figures.
For complete description, see ETL marking on
next page.

Electronics scrap

Bluetooth®

RecycleJapanese TELEC

ISO 7000-1641
Operating instructions
XXXXXX

Recognised
Component mark for Canada and theUnited States
PSE diamond markPSE circle markLinear Actuators | 19
Electrical Testing Laboratories (ETL) marking
Due to space limitations, the complete ETL marking demands are not represented on the marking plates.
The full ETL recognised component markings are shown here:
C/N 120690

C/N 4008004

C/N 4008838

C/N 9901916

C/N 4008005

C/N 4008671

C/N 4008003

C/N 4008623

C/N 4009507

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Conforms to ANSI/AAMI Std. ES60601-1
Cert. to CSA Std. C22.2 No. 60601-1

Linear Actuators | 20

Batteries
General battery warnings
Handle batteries carefully. Do not short circuit the battery.

Avoid continuous battery discharge when the medical device is not in use, as this may cause leadsulphate formation, which, if left in this state for too long, will irreversibly damage the battery.
LINAK battery packs may emit flammable gases. Do not expose the battery packs to fire or
equipment that emits sparks. Moreover, do not store the battery in a closed environment orincorporate it into a closed structure of an enclosure as this may cause an explosion, fire, equipment
damage, or injury.
Handle tools carefully and do not wear jewelery when handling batteries. A short-circuit of thebattery terminals can cause burn injuries, damage or trigger explosions.
Only connect LINAK batteries to compatible chargers.

LINAK battery packs contain toxic substances. If the internal battery fluid leaks out and gets onto
skin or clothing, make sure it is washed off with clean water. Moreover, if the fluid gets into the eyes,
rinse them immediately with clean water and seek medical assistance.
Do not use or store LINAK battery packs in places where the ambient temperature exceeds 50 °C,
such as inside a hot automobile, in direct sunlight, or in front of a stove or a source of intense heat.
Doing so can shorten the battery life, lower its performance level, cause the battery to leak fluid,
explode, cause fire, or be damaged.

Linear Actuators | 21

Lithium ion batteries
Li-Ion batteries are moving in the direction of minimising the physical size and, at the same time, increasing
the capacity. This gives a very compact battery with a high energy concentration. It also increases the risk ofthermal runaway (see note below) due to internal short circuits.
The general use of Li-Ion batteries has increased, and the inherent risk of thermal runaway has led to stricter
rules within the transport industry, specifically air transport with tightened restrictions on the quantity,
handling, and storage of specific products.
The OEMs and consumers must recognise that although safe to use, Li-Ion cells always have a very small riskof thermal runaway. The risk could be as little as 1 PPM or even less.
LINAK currently bases our Li-Ion battery design on cell types with an industry-proven history (e.g. electriccars). The use of well-proven cell technology reduces the risk of thermal runaway, but it does not eliminate
it. LINAK has completed activities to reduce this risk and the complete battery package is approved inaccordance with UL.
An external, internationally recognised expert has also reviewed the design to ensure that it is manufactured
according to the latest recommendations. Further to that, we only use cells from well-recognised
manufacturers.
LINAK recommends that when using Li-Ion batteries, the customers should carry out proper risk analysis on
their application. The risk analysis must also take into consideration that these products are not mounted inpositions where they are in direct contact with flammable materials.
LINAK Li-Ion batteries have no greater risk of thermal runaway than other Li-Ion cells from well-recognised
manufacturers within the market. Therefore, LINAK cannot take responsibility for any failures that occur due
to a failure that is inherent in the nature of Li-Ion batteries.
If any of the Li-Ion batteries built into LINAK products are found to be defective under warranty, LINAK will
provide the OEM with a new product. LINAK explicitly disclaims all other remedies. LINAK shall not in any
event be liable under any circumstances for any special indirect punitive incidental or consequential damages
or losses arising from any incident related to the inherent risk of thermal runaway in the Li-Ion cell and any
use of LINAK products. Moreover, LINAK explicitly disclaims any responsibility for profit loss, failure to realise
expected savings, any claim against our customer by a third party, or any other commercial or economic
losses of any kind, even if LINAK has been advised of the possibility of such damages or losses.
Note: ‘Thermal runaway’ is overheating of a cell, and it could lead to a small fire and smoke from the cell.

Transportation
The lithium ion batteries must be packed and transported in accordance with applicable regulations. Always
ask your local transportation provider how to handle the transportation of lithium ion batteries.
Please see the general assembly instructions and the mounting section for detailed information.

Linear Actuators | 22

Warnings
When using Li-Ion batteries with patient lift control boxes, loss of power might happen due to thebattery deep discharge protection. This will only happen in case of continuous battery use despite
warnings. In this event, there may be no warning, and the application may not be able to move when
expected.
In his risk analysis, the customer must take into consideration how to assure alternative means tomake movement, for instance quick release or manual lowering.
Do not open the battery housing as damaging the cell or circuitry may develop excessive heat.

If product caution is not clearly visible at low light intensity, read the product label instructions
symbol. A warning must be included in the application manufacturer manual for the medical device.
The application manufacturer must test the application and ensure that intentional and unintended
operations do not exceed the battery specification limits.
Defective or damaged Li-Ion batteries are not allowed for transportation.

For safety reasons, please adhere to the indicated charging and operation temperature.

In case the battery is too hot, disconnect it, evacuate the room, and wait for 2 hours before taking
further steps.
Mounting instructions must be followed in order to avoid exposing batteries to water.

In general, recharging of battery must take place every 6 months. However, please note:- New Li-Ion batteries, shipped from LINAK are in a deep-sleep state, where the self-discharge is very
little- When mounted in an application, LINAK Li-Ion batteries wake up, resulting in a higher rate ofcharge, depending on the application/system- Application manufacturer must consider this idle consumption for his specific system and makeprecautions to avoid discharged batteries.
- Contact your LINAK sales team for further information
If batteries are to be shipped by air, they shall not be charged to more than 30%

Disposal of the battery takes place in accordance with local regulations.

Linear Actuators | 23

Recommendations
Do not exceed the storage temperature as it will shorten the product life and performance.
Allow the battery to settle to room temperature before use.
Lithium ion batteries are not intended for use in outdoor applications and indoor pool environments.
If the battery is completely discharged, then recharge the battery before storage.
Always use correct LINAK charger
DO NOT:
Heat or burn the batteries.
Expose the batteries to high impact/excessive force.
Crush or puncture the batteries.
Use batteries with signs of damage or corrosion.
Charge or store the batteries near combustible material.
Exceed IP-ratings.
Overcharge or fully discharge the batteries.

Safety feature
Lithium ion batteries contain several mechanisms to protect themselves from being damaged due toexcessive use. In case of overheating, the device will activate a thermal protection. No power output will beavailable until the temperature is again within normal operating range.
Overheating may occur by extensive use at high temperatures or when exceeding the duty cycle (see productlabel).

Linear Actuators | 24

Lead acid batteries
Maintenance of batteries
Prior to first use of LINAK® batteries, please make sure that they are charged at least 24 hours and if possible
even longer for proper functioning and prolonging the battery lifetime.

Replacement of batteries
The batteries must only be replaced by the same type of batteries or mechanical and electrical equivalent
types. The batteries must be new or maintained by means of charging at least every 6 months. The batteries,
which make a set, must be supplied with identical production codes.
Production code mismatch may lead to a severely reduced lifetime expectancy.
Before mounting, ensure that the battery set is correctly connected, compare with the drawing in the battery
room and check that no connectors are loose.

Warnings in connection with battery replacement
Please observe the following maintenance, replacement, and disposal requirements to ensure a safeand reliable operation.
The batteries are to be replaced after 4 years at the latest. Perhaps earlier, depending on the patternof use. Frequent and high-powered discharges reduce the battery life. For an optimum lifetime, theproduct must be connected to the mains voltage as often as possible. It is recommended that thebatteries are to be charged for at least every 6 months - otherwise the batteries will have reduced
capacity due to self-discharge. It is recommended to test the battery function at least once every year.
The battery compartment is hermetically separated from the electronics compartment. Whenreplacing the batteries this separation must not be damaged or modified as this may allow
penetration of battery gas into the electronics compartment with risk of explosion.
When replacing batteries in waterproof products (IPX5 and IPX6), precautions must be taken thatthe sealing material (silicone ring or joint filler) is not damaged and that it is correctly placed in thegroove. Hereafter, the screws in the cover are to be fastened with approx. 1 Nm.
If necessary, replacement sealing is available at LINAK.
The battery compartment is supplied with ventilation that ensures correct and necessary airing of thebattery compartment. This airing must not be blocked or covered as a positive pressure may occur
with risk of explosion.
If the product has been exposed to mechanical overload (lost on the floor, collision/squeezing in theapplication or a powerful stroke), the product must be sent to an authorised workshop for control of
the hermetic separation between the battery and electronics compartment.

Disposal
Lead acid batteries must be disposed of in the same way as car batteries. Alternatively, they may be returned
to LINAK.

Linear Actuators | 25

System description
LINAK® actuators, lifting columns and electronics have been developed for use in all places where a linear
movement is required.
LINAK products can for example be used for:• Adjustment of beds
• Patient lifts within the care and hospital sector• Adjustment of dentist chairs/gynaecological chairs

Connecting the system
Do not connect the mains cable until all actuators and hand controls have been connected to the controlbox.
Start by connecting the hand control to the control box. The connection in the control box is marked with
“HB”.
Connect the different actuators to the different channels on the control box. Each channel is marked with anumber (e.g. “1”, “2”, “3”…….).
Check that all plugs are well connected and firmly pushed into the connector. Due to the fact that LINAK®
control boxes are designed for a high IP degree, a firm force can be required.
Connect the mains cable.
The actuators can now be operated by pressing a button on the hand control button.
LINAK actuators or lifting columns

LINAK hand control

LINAK control box

Any non-detachable power supply cord with mains plug is considered to be the disconnecting device.
Charging is only allowed in dry environment, and the appliance inlet must be thoroughly dried before
connecting to mains.

Linear Actuators | 26

General mounting of actuators
Do not use any other screws for the mounting brackets than those recommended by LINAK®. If longer
screws are used, they will come into contact with the inner parts of the actuator. This will result in an
irregular operation or even damage the actuator.
Be aware of the following during mounting and refer to the drawings below:• Fixed to protect it against torque and bending.
• Fixed so that it is restrained, but free to move on its mountings.
• Fixed in brackets, which can take up the torque reaction.
• Mounted at right angles so that the right angle requirement is observed.
• Mounted with correct bolt dimension.
• Mounted with bolts and nuts made of high quality steel grade (for example 10.8). No thread on bolts
inside the back fixture or the piston rod eye.
• Bolts and nuts must be protected from being able to fall out.
• Inspect the actuator for damage before mounting. A damaged actuator must not be mounted. Check for
instance for damaged packaging.
• Do not use a too high tourque when mounting the bolts for the back fixture or the piston rod eye

Figure 1

Figure 2

Figure 3

Linear Actuators | 27

General environmental conditions
Operating, storage and transport
Operating temperature
Relative humidity
Atmospheric pressure+5 °C to +40 °C
20% to 80% - non-condensing
700 to 1060 hPa (Rated to be operated at an altitude ≤ 3000 m)

Storage temperature
Relative humidity
Atmospheric pressure-10 °C to +50 °C
20% to 80% - non-condensing
700 to 1060 hPa (Rated to be stored at an altitude ≤ 3000 m)

Transport temperature
Relative humidity
Atmospheric pressure-10 °C to +50 °C
20% to 80% - non-condensing
700 to 1060 hPa (Rated to be transported at an altitude ≤ 3000 m)

If the actuator is assembled in the application and is exposed to push or pull during transportation, the actuator can be damaged.
Do not drop a LINAK component or otherwise damage the housing during disassembly or transportation.
We do not recommend to use a LINAK component that has been damaged.

Linear Actuators | 28

Information on start-up, deinstallation and operation
Before installation, deinstallation or troubleshooting• Stop the actuator/lifting column.
• Switch off the power supply or pull out the mains plug and pull out the plug to the actuator/liftingcolumn.
• Relieve the actuator/lifting column of any loads, which may be released during the work.

Before start-up• Make sure that the system has been installed as instructed in the relevant product manual.
• The individual parts (actuator/lifting column/hand controls etc.) must be connected before the control box
is connected to the mains.
• Make sure that the mains voltage to be connected to the product or the system is the one stated on thelabel.
• The equipment can be moved freely over the whole working area of the actuator/lifting column.
• Check correct function after mounting.
• The actuator/lifting column must not be loaded in excess of the values indicated in the specifications on
the product label.
• The duty cycle noted on the product label must always be observed. Otherwise there is a risk of productdamage. Exceeding the duty cycle will result in a dramatic reduction of the system lifetime.
• Unless specified otherwise on the product label, the duty cycle is max. 10%, max. 2 minutes in use
followed by 18 minutes not in use.
• The actuator/lifting column system may only be used in an environment corresponding to the IP rating of
the system. LINAK products are marked with the actual IP rating on the label.
• If any individual parts are suspected to be damaged, do not install the parts, but return them forinspection/service.

During operation• Check for unusual sounds and irregular movement. Stop the actuator/lifting column immediately ifanything unusual is observed.
• If the control box makes unusual noises or smells, switch off the mains voltage immediately and theexternal battery, if any.
• Take care that the cables are not damaged.
• Unplug the mains cable on mobile equipment before it is moved.

Linear Actuators | 29

Cleaning
The products can be cleaned as described in the following according to their IP protection stated on the
product label.
The IP code specifies the protection degree provided by the enclosures. For most products, only theprotection against ingress of water (second characteristic numeral) is specified, ingress of solid foreign
objects or dust (first characteristic numeral) is not specified and therefore replaced by the letter X in thecode.
IP protection

Cleaning instructions

IPX0

Clean with a damp cloth

IPX1

Clean with a damp cloth

IPX2

Clean with a damp cloth

IPX3

Clean with a damp cloth

IPX4

Clean with a damp cloth

IPX5

Wash with a brush and water, but not water under pressure

IPX6

Wash with a brush and water. The water can be under pressure, but the system must not becleaned directly with a high pressure cleaner. Max. 20 oC

IPX6 Washable according toIEC 60601-2-52

Clean by the use of wash tunnels according to IEC 60601-2-52

IPX6 Washable DURATM

Clean by the use of wash tunnels according to IEC 60601-2-52, extended washing cycle test

To avoid degreasing of the piston rod, the actuator should be retracted to minimum stroke and without load
before washing.

Cleaning warnings
The systems must not be sprayed directly with a high pressure cleaner.
Interconnecting cables must remain plugged in during cleaning to prevent water ingress.
Cleaning with a steam cleaner is not permitted
UV cleaning is not permitted.

Linear Actuators | 30

IPX6 Washable
LINAK® washable products frequently undergo a fully regulated washing test.
At LINAK, ‘IPX6 Washable’ means that the products conform only to this test.
Standard washing procedure
Reference:

The standard IEC 60601-2-52 newest revision, which includes special demands tofundamental safety and relevant functional characteristics for hospital beds.
The demands for the washing process are described in the German “Maschinelle
Dekontamination” from the organisation AK-BWA (Arbeitskreis Bettgestell- und WagenDekotaminationsanlagen).

Description:

At LINAK, the washing test takes place in an instrument washing machine, which is fitted
and programmed in such a way that it duplicates the process used in a typical hospitalinstallation for the cleaning of beds and other medical equipment.
During the test, the products are exposed to both thermal and chemical effects.
To avoid degreasing of the piston rod, the actuator should be retracted to minimum stroke
and without load before washing.

Preparation:

As plastic materials to a larger or lesser degree change characteristics and shape with timeand climatical exposure, an ageing of the products is carried out first. The conditions forageing are 65 °C +/- 2 °C in normal dry air for 10 days followed by a minimum of 16 hours
at room temperature before the washing process starts.

Water:

Degree of hardness, no more than 5° dH and no demineralised water.

Detergents:

LINAK recommends the following products:
Sekumatic FDR or FRE from Ecolab
Neodisher Dekonta from Dr. Weigert
Thermosept NDR from Schülke or similar with a pH-value of 5 - 8 and in a concentration of
0.5 %Linear Actuators | 31

Rinsing aids
LINAK® recommends the following products:•

Sekumatic FKN from Ecolab•

Neodisher BP or TN from Dr. Weigert•

Thermosept BSK from Schülke or similar with a pH-value of 5 - 8 and in a concentration of 0.2 %.

Demands to chemicals:•

They must not contain caustic solutions•

They must not change the surface structure or adhesive properties of the plastic•

Must not break down grease

LINAK washing profile according toIEC 60601-2-52

LINAK washing machine

°C
70.0

65.0

60.0

55.0

50.0

45.0

40.0

35.0

30.0

25.0

20.0
13:00:00

13:10:00

13:20:00

Linear Actuators | 32

IPX6 Washable DURA™
Description of washing test
LINAK washable products frequently go through a fully controlled washing test. The LINAK term “IPX6
Washable DURA” signifies that the products conform exclusively to this test.
The “IPX6 Washable DURA” washing test is used to ensure that products that are rated “IPX6 Washable
DURA” comply with the agreed terms and conditions. This washing test differs from the norm EN60601-252 as the products are not aged and each washing cycle is followed by a 30 minute cooling process.
Further information regarding the washing process can be found in the German document “Maschinelle
Dekontamination” from the organisation AK-BWA .
Estimated time
consumption:

Approximately 1 month.

Amount ofsamples:During the development process, the number of tested samples is in accordance with
GP082. During running production, the number of tested samples complies with
UM-41-22-001.

General:The process applies to the IPX6 Washable DURA system.

Test conditions: • The units are not aged.
• Products with adhesive foils must be hardened before ageing.
• The hardening time depends on the used adhesive, but is typically 3 days at 20°C.
• The units are washed with new plugs/cables.
• The cables should be as long as possible and free ends should be shut off.
• Detergent and rinsing aids used:- Detergent 1: Ecolab Sekumatic FRE- Rinsing aid 1: Ecolab Sekumatic FKN (Neutral Rinse Aid).
Test procedure:• The units are placed in the washing machine in the intended mounting direction(in the most sensible direction regarding water penetration, if this is not the same
direction).
• The washing process (see picture below) is repeated 11 times and consists of:- Washing with 0.3 % alkaline detergent for 2 minutes in 70 °C hot water.
(Note: the temperature is measured in the tank, not necessarily at the unit).
- Rinsing with neutral rinsing aid for 20 seconds.
- Drying and cooling for 30 minutes in the open air at approx. 20 °C.
• After 11 cycles, the products are left in a ventilated room for 24 hours. The above
steps are repeated until a total of 250 cycles has been reached.
• Immediately after washing and after further 24 hours, the products are subjected to ahigh voltage test in accordance with UM-31-30-072.
• A population sample of the products is opened for water penetration control
immediately after the washing test.
Accept criteria are in accordance with UM-20-30-002.

Options:

The following options can be used for the test:• The units may be weighed prior to and after the washing test to detect water.
• The bubble test may be used to detect any leakages.
• X-ray may be used to detect any leakages.

Linear Actuators | 33
LINAK washing profile for the “IPX6 Washable DURA” process
LINAK washing profile according to
DURATM(Note: The temperature is measured at the unit)

Cable wash
Before the washing procedure starts
In order to maintain the flexibility of the cables, it
is important that the cable is placed in such a waythat the cable’s own weight does not strain the coilduring the washing process. This can be done byplacing the cable ON the bed or another form of
support for the cable. Please see the examples in the
picture to the right.

LINAK washing machineLinear Actuators | 34

General maintenance
If not otherwise stated in the specific product section.
• LINAK products must be cleaned at regular intervals• Frequent inspection for malfunction, mechanical damage, wear and cracks. Worn-out parts must be
replaced• Inspection/maintenance intervals are to be recommended by the medical device manufacturer• LINAK products are closed units and require no internal maintenance• LINAK products must be IPX6 Washable and IPX6 Washable DURA when cleaning in wash tunnels• O-rings: When individual parts are replaced in a LINAK IPX6, IPX6 Washable or IPX6 Washable DURA
system, the O-rings must be replaced at the same time on all parts. On all products where replaceable
cables or fuses have been dismounted or replaced, the O-ring must be replaced, and the O-rings and thereceptacle insert must be greased with an acid-free Vaseline.

Maintenance of all LINAK actuators• Actuators/lifting columns must be regularly inspected at attachment points, wires, piston rod, enclosure,and plugs, and it must be checked that the actuators/lifting columns function correctly• To ensure that the pregreased inner tube remain lubricated, the actuator must only be washed when thepiston rod is fully retracted

Linear Actuators | 35

Repair and disposal
Only an authorised LINAK® service centre should repair the LINAK actuator systems. Systems to be repaired
under warranty must be sent to an authorised LINAK service centre.
In order to avoid the risk of malfunction, all actuator repairs must only be carried out by an authorised LINAKService shop or repairers, as special tools and parts must be used.
If a system is opened by unauthorised personel there is a risk that it may malfunction at a later date.
LINAK systems or components may be disposed of, possibly by dividing them into different waste groups forrecycling or combustion.
We recommend that our product is disassembled as much as possible at the disposal and that you try
to recycle it. LINAK systems or components should be disposed of in accordance with the environmental
regulations applicable in the respective country.

Linear Actuators | 36

Troubleshooting
Symptom

No motor sound or movement of piston rod

Possible cause

Action- The actuator is not connnected tothe control box- Connect the actuator to thecontrol box- Blown fuse in the control box- Fuse must be changed- Cable damaged- Send actuator for repair

Excessive electricity consumption
Motor runs but spindle does not move
Actuator cannot lift full load

- Send actuator for repair- Gear wheel or spindle damaged- Clutch is worn
- Motor is damaged

Motor sound but no movement of piston rod- Send actuator for repair- Send actuator for repair- Send actuator for repair

No signal from Reed or Hall switch- Send actuator for repair

Motor runs and quick release does not function or
is noisy- Declutching arm turns less thanapprox. 75 °C- Adjust cable

Piston rod will only move inwards and not
outwards- Safety nut has operated- Send actuator for repair- Not connected to mains- Connect to mains- The fuse has blown- Replace fuse, if the system
is prepared for external fuse
replacement, or send the system
for repair

Power indicator does not light up- Defective power cable- On control boxes withexchangeable power cable,change the cable.
- On control boxes with fixed cable,
send it for repair- Control box defective- Send control box for repair- Actuator plug not pushed into
control box properly- Push actuator plug properly into
control box- Replace actuator

Power indicator lights up, but actuator does not
run- Actuator defective

Control box relays are clicking- Control box defective- Send control box for repair

Power indicator lights up, but actuator does notrun- Hand control defective- Send hand control for repair

No relay noise is heard from control box
Not valid for CB20/CB6S OBF/CB16 OBF- Battery completely flat

- Charge battery- Battery defective- Replace battery- Actuator plug not properly pushed
into control box- Push actuator plug properly into
control box- Actuator defective- Replace actuator

Control box completely dead on battery and norelay clicking- Replace the control box

Actuator does not run on battery, but relay clicking - Control box defective
can be heard- Hand control defective- Control box defective
Control box okay apart from one direction on one
channel- Defective control box- Replace control box- Send hand control for repair- Send control box for repair

Linear Actuators | 37

LA20 Inline
LA20 is a slim inline actuator created to cover a wide range of applications,where design, size and power are crucial. The combination of a high lifting
capacity of 2,500 N with its robust but stylish, small form factor makes theLA20 the ideal solution for many of today’s demanding applications.

Usage
Duty cycle:
Usage temperature:

Max. 10%, 2 minutes continuous use followed by 18 minutes not in use+5 ºC to +45 ºC normal operating temp.

Storage temperature:-27 ºC to +50 ºC (according to test conditions ISO 7176-9)-40 ºC to +70 ºC (according to ISO 7176-9)

Compatibility:
Relative humidity:
Approvals:

Atmospheric pressure:
Meters above sea level:
Cycles:Flammability rating:Compatible with LINAK control boxes.
Please contact LINAK.
20% to 80% - non-condensing
IEC60601-1
ANSI/AAMI
ES60601-1
CAN/CSA-C22.2 No. 60601-1
In compliance with ISO 7176-8
700 to 1060 hPa
Max. 3000 meters
The LA20 life cycle test has been performed with a stabilised power supply(10% duty cycle) on a 120mm stroke actuator at max. load for 10,000 cycles(at ambient temperature)
UL94-V0Linear Actuators | 38

Warnings• Do not sideload the actuator• Only use the actuator within specified working limits• When mounting the LA20 in the application ensure that the bolts can withstand the wear and they are
secured safely• Motor type G and B must only be used with their respective control box types• Motor type B: motor which must be used with COBO, CBJC, CBJ1, CBJ2, CBJH
or generally in applications that are mainly battery driven or customers' own control box.
• Motor type G: motor which must be used with CO61, CO71, CO41, CA30/40.
• Instruction concerning the turning of the piston rod eye: Whenmounting and taking into use, it is not permitted to make excessive turnsof the piston rod eye. In cases where the eye is not positioned correctly,
it is permitted to first screw the eye down to its bottom position, at
a maximum torque of 2Nm (1), and thereafter a maximum half turnoutwards again (2).
• If an actuator with stroke length below 50 mm is used, and the electricalendstop switch fails, be aware that the distance before reaching the mechanical endstop will be
prolonged. The extra distance will be 50 mm minus the actual stroke length. This means that an actuatorwith 20 mm stroke length will travel an additional 30 mm before reaching the mechanical endstop if theswitch fails.

Recommendations• Do not place load on the actuator housing and do prevent impact or blows or any other form of stress tothe housing• Connection bolts must be dimensioned so that they have the necessary strength and tolerance in order toobtain the minimum safety factor according to the requirements of the authorities• Ensure that the cable lock is mounted correctly• Ensure that the cable cannot be squeezed, pulled or subjected to any other stress• Only use the actuator within the specifications• Connection bolts and brackets are to be inspected in connection with service and must be replaced if
there are signs of wear
• The product must always have the motor short circuited to obtain self-locking according to label value/
rated value• Ensure that the duty cycles and the usage temperatures for LA20 actuators are respected• The LA20 is not suitable for use in outdoor applications where it can be exposed to sun and rain.
• Do not expose the actuator to pull during transport of the application

Linear Actuators | 39

Cable mounting
A: To mount a cable
Step 1:
Place the cable in the actuator

Step 2:Press the cable lock down into place

B: To remove/change a cable
Step 1:
Place a screwdriver in the hole in the back fictureof the actuator

Step 2:
Push to remove the cable lock an remove/change
the cableLinear Actuators | 40

Feedback specifications
E1 (Power switch) F1 (Motortype A + B)
1

Not connected2

Not connected3

M+ (Motor/power)4

Not connected

5

Not connected6

M- (Motor/power)

E1 (Power switch) F2 (Dual Hall Digital) See later page (Motortype A + B)
1

External supply: 0V

2

VCC

3

M+ (Motor/power)

4

Hall A

5

Hall B

6

M- (Motor/power)

E1 (Power switch) F7 (Hall Potentiometer) See later page (Motortype A + B)
1

External supply: V0

2

VCC

3

M+ (Motor/power)

4

Analog feedback output

5

Not connected6

M- (Motor/power)

E2 (Signal) F1 (Motortype G)
1

Not connected

2

VCC

3

M+ (Motor/power)

4

EOS IN5

EOS OUT

6

M- (Motor/power)

E3 (Encoded) F3 (Motortype G)
1External supply: 0V

2

VCC

3

M+ (Motor/power)

4

Analogue encoded (Hall-A+EOS* IN/OUT)

5

Not connected6

M- (Motor/power)

E3 (Encoded) F3 (Dual Hall encoded) (Motortype G)
1External supply: 0V

2

VCC

3

M+ (Motor/power)

4

Hall A/Analogue encoded (Hall-A+EOS* IN/OUT)

5

Hall B with Dual-Hall or N/C when testing without Dual Hall

6

M- (Motor/power)

Encoded*EOS

2.65V-3.25V

NONE

2.15V-2.65V

NONE

1.65V-2.15V

OUT

1.15V-1.65V

OUT

0.65V-1.15V

IN

0.05V-0.65V

IN

IntervalHall-A*EOS

2.65V-3.25V

LOW

NONE

2.15V-2.65V

HIGH

NONE

1.65V-2.15V

LOW

OUT

1.15V-1.65V

HIGH

OUT

0.65V-1.15V

LOW

IN

0.05V-0.65V

HIGH

IN

Linear Actuators | 41

Input/output specifications: Dual Hall positioning
Dual Hall, Encoded (F3) is used only for LINAK A/S control boxes.
Dual Hall, Digital (F2) is used for customers’ own control boxes.
Dual Hall, Digital (F2) Positioning:
Item

Specification

Comment

Pin configuration

Pin1

GND

Pin2

VCC

Pin3

M+

Pin4

HALL A

Pin5

HALL B

Pin6

M-

VCC

4-15V

Current

Maximum 15mA @10kΩ and 1nF load. See
diagram.

HALL A/B

TState is minimum 5ms in all states(11,10,00,01)

Feedback circuit has to be powered 50 ms before
driving, and until actuator has stopped moving

Duty cycle Hall A 30-70%
Duty cycle Hall B 30-70%
Low level <GND+0.5V @10kΩ and 1nF load
High level >VCC-0.5V @10kΩ and 1nF load
Driving out, the Hall B signal will go highwhen Hall A signal is low.
Driving in, the Hall A signal will go high when
Hall B signal is low.w

Resolution

The feedback system gives 16 state shifts per
spindle turn.
3mm pitch => 0.1875mm per shift
4mm pitch => 0.25mm per shift

On 100mm stroke you will have the following numberof pulses:
3mm pitch => 533 shifts
4mm pitch => 400 shifts

Linear Actuators | 42

Input/output specifications: Dual Hall encoded
Item

Specification

Comment

Description

The actuator can be equipped with
two hall sensors A and B and a spindle
magnet. In this way you can have pulses
from the actuator when it moves.

Only use for standard actuators,
with LINAK A/S Control Boxes for
OpenBus™.

Pin
configuration

Pin1

External supply: 0 V

IntervalHall-A

*EOS

Pin2

VCC

2.65V-3.25V

LOW

NONE

Pin3

M+ (motor/power)

2.15V-2.65V

HIGH

NONE

Pin4

HALL A, analogue encoded(Hann-A +EOS* IN/OUT)

1.65V-2.15V

LOW

OUT

1.15V-1.65V

HIGH

OUT

Pin5

HALL B with dual Hall or N/Cwhen testing without dual
Hall

0.65V-1.15V

LOW

IN

0.05V-0.65V

HIGH

IN

Pin6
Resolution

M- (motor/power)

The feedback system has an 8P magnet
which gives 16 shifts in pulses per
spindle turn:Pulse/pause minimum 10 milli-seconds.
On 100 mm stroke you will have the following numberof pulses:

2.5 mm pitch = 0.1563 mm per pulse
3 mm pitch = 0.1875 mm per pulse
4 mm pitch = 0.25 mm per pulse
5 mm pitch = 0.3125 mm per pulse
6 mm pitch = 0.375mm per pulse

2.5 mm pitch = 640 pulses
3.0 mm pitch = 533 pulses
4.0 mm pitch = 400 pulses
5.0 mm pitch = 320 pulses
6.0 mm pitch = 267 pulses

Connection

6 pins micro-fit

Use cables:
Standard 6 wires

Combination

Only standard

Linear Actuators | 43

Input/output specifications: Hall potentiometer feedback
The Hall potentiometer feedback is an option on the LA20. This is especially suitable for wheelchairs or otherapplications as the LINAK control boxes are not suitable of handling the signal.
• •Hall potentiometer is close to be an absolute positioning system• •Hall potentiometer is a long lasting and wear-resistant positioning system• •Enables compact products to have precise positioning (potentiometer increase the product potential)

Item

Specification

Pin configuration

Pin1

External supply: V0

Pin2

VCC

Pin3

M+ (motor/power)

Pin4Hall potentiometer

Pin5

Not connected

Pin6

M- (motor/power)

Description

Comment

The actuator can be equipped with
an electronic circuit that gives a
feedback signal when the actuatormoves.

Input voltage

VCC = 5V – 12 V DC

Output voltage

0.3V – 3.0V @ Load > 100kΩ
0.3V = EOS IN
3.0V = EOS OUT

Current consumption

Current consumption is max
20mA @ 12V

Actuator connector front view:
6

5

4

3

2

1

VCC
SIGNAL

OutputOV (GND)

Feedback circuit has to be powered 1 second before
and after the motor runs and until the actuator has
stopped. Cable dimension 0.32 mm3 (AWG22)

Also when actuator is not runningLinear Actuators | 44

Motor specification
Item

Specification

Comment

Pin connection

Pin1

Outwards:
Pin3: +
Pin6: -

Pin2
Pin3

M+/-

Inwards:
Pin3: Pin6: +

Pin4
Pin5
Pin6
Description

M-/+

Permanent magnet DC motor, available
in 12V motor type A, 24V motor type Bor 24V motor type G.
EMC noise from the motor is dealt with in LINAK
A/S control boxes. If using the actuator in anotherapplication, it is up to the customer to be EMC
compliant.

Input voltage

Motor type A +/- 10%
Motor type B +/- 10%
Motor type G +/- 10%

Current
consumption

Motor type A, 0-1 - 1.3A
depending on load
Motor type B, 0-1 - 1.3A
depending on load
Motor type G, 0.1 - 1.0A
depending on load

Speedregulations

The motor can run with PWM regulation.
This could be used for soft start/stop etc.

Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6

Mini-fit plug cablewithout feedback

Mini-fit plug cablewith feedback

EOS Switch

Hall

Switch com. (GND)
Vbus
M+ (Motor/Power)
EOS wout
EOD inM- (Motor/Power)Hall (GND)
Vbus
M+ (Motor/Power)Hall A
Hall B
M- (Motor/Power)

See curves for typical values

Article numbers = 23xxxxxxxxxxxxB

Linear Actuators | 45

LA23
The LA23 is a small and strong push/pull actuator (up to 2,500 N). The
LA23 can be used in various applications where size is important.
Some of the benefits the LA23 offers you are:• Compact design• High lifting force• Exchangeable cables

Usage
Duty cycle:

10%, 2 minutes continuous use followed by 18 minutes not

Operation temperature:+5 °C to +40 °C normal operating temp.
-30 °C to +50 °C according to test conditions: ISO 7176-9

Storage temperature:

45 °C to +70 °C (according to ISO 7176-9)

Compatibility:

Compatible with LINAK control boxes. Please contact LINAK.

Approvals:

IEC60601-1
ANSI/AAMI ES60601-1
CAN/CSA 22.2 No 60601-01

in use

LA23IC is not approved according to the above.
LA23 in combination with CBD4, 5 & 6 has no approvals.
Flammability rating:

Enclosure UL94-V0

Warnings• All IC (Integrated Controls) versions are not compliant for Medical use.
• Do not sideload the actuator.
• Only use the actuator within specified working limits.
• Always use steel backfixture for LA23 over 1500N and for pull loads.
• When mounting the LA23 in the application ensure that the bolts can withstand the wear and that they
are secured safely.
• The B and G 24V motors must only be used with their respective control box types.
––

Motor type A: 12V motor
Motor type B: 24V motor which must be used with JUMBO; CBJ1/2, CBJC and CBJH or generally inapplications which are mainly battery driven.
– Motor type G: 24V motor which must be used with OpenBus™ control boxes; CB20, CB16, CB6S,
Instruktion vedr. uddrejning af inderrør – LA27 + LA27C
CA30, CA40, CO61
Til salesbackup, brugsanvisning og datablad.
• If an actuator with stroke length below 50 mm is used, and the electrical end-stop
switch fails, please be
Ved montage og ibrugtagning, er det ikke tilladt at dreje unødvendigt mange gange på
stempelstangsrøret. Hvis øjet ikke er positioneret korrekt, er det tilladt først at skrue
aware that the distance before reaching the mechanical end-stop will be prolonged.
extra
distancerøret i bund (1), og The
derefter skrue
det maksimalt½ omgang ud igen (2).
will be 50 mm minus actual stroke length. I.e. If an actuator with 20 mm stroke length is used andthe switch fails, it will travel an additional 30 mm before reaching themechanical end-stop.
030618/DS• Instruction concerning the turning of the piston rod eye: When mounting
and taking into use, it is not permitted to make excessive turns of the piston
rod eye. In cases where the eye is not positioned correctly, it is permitted
to first screw the eye down to its bottom position, at a maximum torque of
2Nm (1), and thereafter a maximum half turn outwards again (2).

Linear Actuators | 46

Recommendations• Do not place load on the actuator housing and do prevent impact or blows, or any other form of stress tothe housing.
• Ensure that the cable lock is mounted correctly.
• Ensure that the duty cycle and the usage temperatures for LA23 actuators is respected.
• Ensure that the cable cannot be squeezed, pulled or subjected to any other stress.
• The LA23 is not suitable for use in outdoor applications where it can be exposed to sun and rain.
• If outdoor use cannot be avoided, it is very important that the LA23 is mounted in a position where it iswell shielded. It is up to the customer to provide the shielding.
• Furthermore, it will be good practice to ensure that the actuator is fully retracted in the “normal”
position. The reason is that there will be a vacuum inside the actuator if it is extended which over time
can lead to water entering the actuator.
• The B and G 24V motors must only be used with their respective control box types.
• Not acceptable: B motor with OpenBus™ control boxes!
Reason: The actuator will be too strong, it will run too fast, be noisy and only have a short lifetime. The
actuator will not live up to what we promise.
• Not acceptable: G motor with 24V supply!
Reason: The actuator will be too weak, this means it will only run slowly, not be able to lift as much inthe cold and under low current conditions. The actuator will not live up to what we promise.

Linear Actuators | 47

Cable lock
The item numbers for ordering the Cable Lock are:• Item number: 0231007 (light grey) for one cable lock (1 piece).
• Item number: 0231037 (black) for one cable lock (1 piece).
Below you see an instruction in how to mount and remove the cable lock from LA23.
a) To mount a cable lockPush down until the cable lock clicks into place.

b) Cable lock removal
Step 1. Insert e.g. a screwdriver at a 45° angle as illustrated.

Step 2: Turn the screwdriver torelease the cable lock.

Step 3: Now the cable lock can beremoved by hand.

Note: When a cable lock has been removed, it is recommended to replace it with a new.

Linear Actuators | 48

Connection diagrams
Standard electrical end stop - no positioning
23XXXXXX00XXXXX}

6 poles connector

Standard electrical end stop and potential free end stop - no positioning
23XXXXXX01XXXXX}

6 poles connector

Dual Hall digital positioning

Dual Hall PNP positioning

23XXXXXX02XXXXX

23XXXXXX03XXXXX}

6 poles connector

Note: Connection colours only fit with “open end” cables.
Note: If reversed driving is wanted this has to be done by using different cables.

Linear Actuators | 49
Hall Potentiometer feedback and potential free end stop
23XXXXXX2XXXXXX}

10 poles connector

Hall Potentiometer feedback
23XXXXXX1XXXXXX}

10 poles connector

Hall PWM position feedback and potential free end stop
23XXXXXX4XXXXXX}

10 poles connector

Note: Connection colours only fit with “open end” cables.

Linear Actuators | 50
Hall PWM position feedback
23XXXXXX3XXXXXX}

10 poles connector

Standard Integrated Control			
23XXXXXX5XXXXXX
Integrated Control with Hall Potentiometer position feedback
23XXXXXX6XXXXXX
Integrated Control with Hall PWM position feedback
23XXXXXX7XXXXXX

Drawing no.: 0239010-A}

10 poles connector

LA23 with integrated control is not approved according to IEC60601-1,
ANSI/AAMI ES60601-1.

Note: Connection colours only fit with “open-end” cables.

Linear Actuators | 51

Input/output specifications: Motor
Item

Specification

Description

Permanent magnet DC motor,
available in 12V or 24V

Comment

M

EMC noise from the motor is dealt with in
LINAK A/S Control boxes. If using the actuator inanother aplication it is up to the customer to be
EMC compliant.
Input voltage

12VDC, +/- 20% 24VDC, +/- 10%

Cable dimension 0.50mm2(AWG20)Current consumption

12V, 0.2 - 6A depending on load
24V, 0.1 - 3A depending on load

See curves for typical values

Speed regulations

The motor can run with PWM
regulation. This could be used forsoft start/stop etc.

Connection

To extend actuator:
Connect Brown to positive,
Connect Blue to negative
To retract actuator:
Connect Brown to negative,
Connect Blue to positive

Cables:Standard 6 wires:
0237002-xxxx
Absolute positioning 8 wires:
0237001-xxxx

Input/output specifications: Potential free end stop signals
Potential free end stop signals provide a signal when the actuator has reached end stop. This signal can beutilized to provide confirmation that end stop is reached.
Item

Specification

Description

The actuator can be equipped with
two separate detector switches thatare activated when the actuator is fully
retracted (IN) or when fully extended(OUT).
The detector switches are normally open.

Input Voltage

3 - 20VDC

Output Voltage

Same as input voltage

Switching capacity

Max.: 50mA 20VDC
Min.: 100µA 3VDC

Connection

Common: Red
Actuator retracted: Yellow
Actuator extended: Green

Combinations

The potential free switches can be
combined with absolute feedback.
But cannot be combined with “PLC/
option”

Comment

IN
OUT
Cable dimension 0.22mm2 (AWG24)

Use Cables:
Standard 6 wires:
0237002 - xxxx
PLC/Absolute positioning 8 wires:
0237001 - xxxx

Linear Actuators | 52

Input/output specifications: Dual Hall, digital positioning
Item

Specification

Comment

Description

The actuator can be equipped with
two hall sensors A and B and a spindle
magnet. In this way you can have pulses
from the actuator when it moves.

Only use for standard actuators,
with LINAK A/S Control Boxes for
OpenBus™.

Resolution

The feedback system has an 8P magnet
which gives 16 shifts in pulses per spindle
turn:

Pulse/pause minimum 10 milli-seconds.
On 100 mm stroke you will have thefollowing number of pulses:
3 mm pitch = 533 pulses
5 mm pitch = 320 pulses
6 mm pitch = 267 pulses
9 mm pitch = 178 pulses
12 mm pitch = 133 pulses
20 mm pitch = 80 pulses

3 mm pitch = 0.1875 mm per pulse
5 mm pitch = 0.3125 mm per pulse
6 mm pitch = 0.375 mm per pulse
9 mm pitch = 0.5625 mm per pulse
12 mm pitch = 0.75 mm per pulse
20 mm pitch = 1.25 mm per pulse
See drawing for details.
Tstate is minimum 5ms in all states(11.10.00.01)

Connection

6 pins mini-fit

Combination

Only standard

Use cables:
Standard 6 wires:
0237003-xxxx

Linear Actuators | 53

Input/output specifications: Dual Hall positioning PNPThe Dual Hall positioning PNP is an option on LA23. This is especially suitable for wheelchairs or Techline
applications as the LINAK control boxes have their own option 02 for that purpose.	
• •Is protected against loaddump and wrong placement of wires

Item

Specification

Description

The actuator can be equippedwith two hall sensors A and B
and a spindle magnet. In this way
you can have pulses from theactuator when it moves.

Input voltage

9-32VDC

Output voltage

PNP source current: max. 12mA.
HIGH: Output = VCC-1.2V (±0.5V)
LOW: Output = 10KΩ pull downtRISE < 100us@24V LOAD:5m cable 1nF//10KΩ
tFALL < 100us@24V LOAD:5m cable 1nF//10KΩ
tstate > 10ms
@24V LOAD:5m cable 1nF//10KΩ

Current

Max. 20mA+source current.

Protection

LOAD DUMP
Wire wrong placement

Resolution

The feedback system has an 8P magnet
which gives 16 shifts in pulses per spindleturn:
3 mm pitch = 0.1875 mm per pulse
6 mm pitch = 0.375 mm per pulse
9 mm pitch = 0.5625 mm per pulse
12 mm pitch = 0.75 mm per pulse
20 mm pitch = 1.25 mm per pulse

Comment

Feedback circuit has to be powered 1 second before
driving and until the actuator has stopped.

Also when actuator is not running.

On 100 mm stroke you will havethe following number of pulses:
3 mm pitch = 533 pulses
6 mm pitch = 267 pulses
9 mm pitch = 178 pulses
12 mm pitch = 133 pulses
20 mm pitch = 80 pulses

See drawing for details.
Tstate is minimum 5ms in all states(11.10.00.01)
Cable

Connection
M+: Brown
M-: Blue
VCC: RedHALL A: Yellow
HALL B: Green
GND: BLACK
Max. length 5m.

Use cables:
Standard 6 wires:
0237002-xxxx

Linear Actuators | 54

Input/output specifications: Dual Hall encoded
Item

Specification

Comment

Description

The actuator can be equipped with
two hall sensors A and B and a spindle
magnet. In this way you can have pulses
from the actuator when it moves.

Only use for standard actuators,
with LINAK A/S Control Boxes for
OpenBus™.

Resolution

The feedback system has an 8P magnet
which gives 16 shifts in pulses per spindleturn:
3 mm pitch = 0.1875 mm per pulse
5 mm pitch = 0.3125 mm per pulse
6 mm pitch = 0.375mm per pulse
9 mm pitch = 0.5625mm per pulse
12 mm pitch = 0.75mm per pulse
20 mm pitch = 1.25 mm per pulse

Pulse/pause minimum 10 milli-seconds.
On 100 mm stroke you will have thefollowing number of pulses:
3 mm pitch = 533 pulses
5 mm pitch = 320 pulses
6 mm pitch = 267 pulses
9 mm pitch = 178 pulses
12 mm pitch = 133 pulses
20 mm pitch = 80 pulses

See drawing for details.
Tstate is minimum 5ms in all states(11.10.00.01)
Connection

6 pins mini-fit

Combination

Only standard

Use cables:
Standard 6 wires:
0237003-xxxx

Linear Actuators | 55

Input/output specifications: Hall Potentiometer feedback
The Hall Potentiometer feedback is a an option on LA23. This is especially suitable for wheelchairs or
Techline applications as the LINAK control boxes are not capable of handling the signal.
The main advantages are:
• Hall potentiometer is close to being an absolute positioning system• Hall potentiometer is a long lasting and wear-resistant positioning system• Enables compact products to have precise positioning (potentiometer increases the product potential)
Item

Specification

Description

The actuator can be equipped with anelectronic circuit that gives a feedback
signal when the actuator moves.

Comment

SIGNAL

Input voltage

10 - 28VDC
Ripple down to 6V acceptable
Limit supply to 500mA or 500mA
fuse in case of wrong polarisation.

Feedback circuit has to be powered 1
second before and after the motor runs
and until the actuator has stopped.
Cable dimension 0.5mm2
AWG20

Output voltage

0 - 10V +/- 0.5V @ Load > 100kΩ

Can be configured between
0 - 10V
Example:1V = Fully retracted
9V = Fully extended

0V = Fully retracted
10V = Fully extended
Current consumption

Current consumption is max.
40mA @ 12V

Also when actuator is not running.

Connection

Supply: White
Ground: Black
Signal: Violet

Use Cables:
PLC/Absolute positioning
8 wires
0237003-xxxx

Combinations

The absolute positioning can be
combined with potential free switches.
But cannot be combined withrelative positioning.

Linear Actuators | 56

Not for Medical use
Input/output specifications: IC (Integrated Control) option
Item

Specification

Description

Same

Comment

Power supply
Input Voltage (VIN)

12VDC, ±20%.
24VDC, ±10%.
Not available with 24/33V (motor
type G)

Cable dimension 0.5mm2
AWG20

Current consumption@25ºC

12V, 0.4-6A depending on load
24V, 0.2-3A depending on load

Recommended fuse:
12V version = 6AT
24V version = 3AT

Standby<500mW

Inputs signal
Outwards direction>67% of VIN = on<33% of VIN = off<3KΩ impedance = on
>30KΩ impedance = off

Inwards direction>67% of VIN = on<33% of VIN = off<3KΩ impedance = on
>30KΩ impedance = off

Output signals
Signal GND

Used to minimize noise on the signal
wires.
Must be isolated from GROUND

Actuator fully retracted (IN)OUT voltage when active = VINSource
current max. 100mA
Voltage min =VIN-0.5V

Actuator fully retracted (OUT)

OUT voltage when active = VINSource
current max. 100mA
Voltage min =VIN-0.5V

FEEDBACKPWM Output

Frequency: 75Hz ± 5Hz
Accuracy: ±2%
Resolution: pitch divided 16
PNP source current: max. 12mA.
PWM_HIGH: VCC±1V
PWM_LOW: 0.5V±0.5V

tRISE < 30us
@ LOAD:5m cable 10KΩ
tFALL < 30us
@ LOAD:5m cable 10KΩ

Hall Potentiometer feedback

0 - 10V +/- 0.5V @ Load > 100kΩ
Resolution: pitch divided 16
0V = Fully retracted
10V = Fully extended
Output impedance= 270Ω

Can be configured between
0 - 10V
Example:1V = Fully retracted
9V = Fully extended

FEEDBACK
Single Hall

16 pulses each revolution
PNP source current: max. 12mA.
PWM_HIGH: VCC±1V
PWM_LOW: 0.5V±0.5V

Cable

Connection
VCC: Brown
GROUND: BlueINWARDS: Black
OUTWARDS: Red
IN: Yellow
OUT: GreenFeedback: Purple
Signal GND: WhiteMax. length 5m.

Use cables:
Standard 8 wires:
0237001-xxxx

Linear Actuators | 57

Input/output specifications: Hall PWM positioning feedback
The Hall PWM positioning feedback is an option on LA23. This is especially suitablefor wheelchairs or Techline applications as the LINAK control boxes are not capable ofhandling the signal. The main advantages are:
• Hall potentiometer is close to being an absolute positioning system• Hall potentiometer is a long lasting and wear-resistant positioning system• PWM is more immune to noise than Hall Potentiometer feedback• Enables compact products to have precise positioning (potentiometer increases the product potential)

Item

Specification

Description

The actuator can be equippedwith an electronic circuit that gives a
PWM position feedback.

Input Voltage

10 - 28VDC
Ripple down to 6V acceptable
Limit supply to 500mA or 500mA
fuse in case of wrong polarizationPWM Output

Frequenzy: 75Hz ± 5Hz
Accuracy: ±2%
Resoluton: pitch divided 16

Comment

Feedback circuit has to be
powered 1 second before motor
runs and until the actuator has
stopped.
Cable dimension 0.5mm2
AWG20

PNP source current: max. 12mA.
PWM_HIGH: 10V±1V
PWM_LOW: 0.5V±0.5V
tRISE < 30us
@ LOAD:5m cable 1nF//10KΩ
tFALL < 30us
@ LOAD:5m cable 1nF//10KΩ

Current

Current consumption is max.
40mA @12V

Also when actuator is not running

Cable

Connection
VCC: WhitePWM: Violet
GND: BLACK
Max. length 5m.

Use cables:
Standard 8 wires:
0237001-xxxx

Combinations

The absolute positioning can be
combined with potential free switches.
But cannot be combined with relative
positioning.

Linear Actuators | 58

LA24
LA24 is a compact actuator designed for a variety of medical and healthcare
applications. The LA24 is also a part of the LINAK Spyder™ solution which is
specifically developed for homecare bed applications.
It comes in 3,500 N, 2,500 N, and 1,400 N versions and is ideal for 4-motor care
bed applications and movement of leg rest and backrest in a variety of healthcare
bed applications.
Designed to support the mounting of the control box CA10, the LA24 is the ideal
actuator for a compact and cost-efficient solution.

Usage
Operation temperature:+5 °C to +40 °C

Storage temperature:-10 °C to +50 °C

Duty cycle:

10% or 2 minutes continuous use followed by 18 minutes not in use

Compatibility:

Compatible with LINAK control boxes

Relative humidity:

20% to 80% – non-condensing

Atmospheric pressure:

700 to 1060 hPa

Meters above sea level:

Max. 3000 meters

Approvals:

IEC60601-1
ANSI/AAMI ES60601-1
CAN/CSA-22.2 No 60601-1

Technical specifications
Max. load
push (N)

Self lockpush (N)Max.
load pull
without
spline (N)Actuator
type

Motor
type

Spindle
pitch
(mm)

LA24

Standard
(B)

4

3,500

3,500

500*

LA24

Standard
(B)

5

3,500

3,500

500*

LA24

Standard
(B)

6

2,500

2,500

500*

LA24

Standard
(B)

9

1,400

1,400

500*

* Max. static pull (with safety factor 5)

PowersupplyTypicalspeed at0/max.
load (mm/sec.)

Typicalcurrent atfull load(Amps)

24 VDC

5.9/4.8

3.5

33 VDC

7.0/6.8

3.7

24 VDC

7.5/5.5

4.1

33 VDC

9.6/8.2

4.3

24 VDC

8.8/7.0

3.5

33 VDC12.2/10.3

3.6

24 VDC

13.2/11.2

2.7

33 VDC18.2/16.2

2.8

Linear Actuators | 59

Built-in dimension (BID) and stroke length (SL) compatibility matrix
Installation dimension
StrokelengthBID 270

BID 320

BID 575

withmech. spline

without
mech. splinewithmech. spline

without
mech. splinewithmech. spline

without
mech. spline

SL 60

OK

OK

OK

OK

OK*

OK*

SL 65

OK

OK

OK

OK

OK*

OK*

OK

OK

OK

OK*

OK*

OK

OK

OK*

OK*

OK*

OK*

OK*

SL 85
SL 110SL 150SL 405

Not possible

OK*

OK: Max. load 3.500 N

OK*: Max. load 1.400 N

Information
Use in pull:
The product is not designed for dynamic load changes (from push to pull or vice versa). If the application
design requires a product with a dynamic load change capability, please contact LINAK for investigation of
product feasibility or guidance.

Linear Actuators | 60

Recommendations• Power supply without current cut-off can cause serious damage to the actuator if a mechanical stop is
encountered or the actuator movement is blocked in another way.
• Connection bolts must be dimensioned so that they have the necessary strength and tolerance in order toobtain the minimum safety factor according to the requirements of the authorities.
• The actuator must not be subject to a side load, as this can cause bending/collapse of the actuator. The
actuator must never be used as a handle.
• The actuator must not be subject to off-centre loading, as this can cause bending/ collapse of theactuator.
• The actuator must not be subject to impact, or any form of stress to the casing.
• The actuator must not be subject to overload, as this can reduce the lifetime of the actuator and in theworst case cause damage to the actuator.
• Only use the actuator within the specifications.
• Connection bolts and brackets are to be inspected in connection with service, and must be replaced if
there are signs of wear.
• Ensure that the cable lock is mounted correctly.
• Ensure that the duty cycle and the usage temperatures for LA24 actuators are respected.
• Ensure that the cable cannot be squeezed, pulled or subjected to any other stress.
• The LA24 is not suitable for use in outdoor applications where it can be exposed to sun and rain.
• LA24 with mechanical endstop - a first failure safe option:- In many applications customers have approvals in accordance with EN 60601-1. The typicalapplications are beds, massage couches etc. The norm EN 60601-1 states that the applicationmust be first failure safe. The manufacturer has the responsibility of carrying out a risk analysis inorder to check this. If a risk is identified, the application manufacturer must ensure that this risk iseliminated. A switch cannot be first failure safe.
• Noise and extended play in axial direction may occur during lifetime due to wear and tear.

Linear Actuators | 61

Warnings• Only use this actuator within the specified working limits.
• The installation of spline actuators is recommended by LINAK, where possible, to avoid squeezing of bodyparts.
• End of life issue: defective switches - endstop:- if the electrical endstop switch for outward operation fails, it may cause a prolonged actuator
stroke and in addition the customer application may collapse. To avoid this, the manufacturer
must take this into account when designing and making a risk analysis.
- Minimum length of actuator reaching mechanical endstop: BID - 7 mm.
- Maximum length of actuator reaching mechanical endstop: BID + SL + 7 mm.
• If the actuator does not work as intended, there is a risk of injury. Therefore, the actuator must
immediately be sent to the nearest authorised LINAK workshop for service.
• The actuator is not designed for repeated dynamic push-to-pull movement.
• Instruction concerning turning of the inner tube when adjusting built-in dimension: Turning the innertube, clockwise/inwards (1) is not allowed at all.
• Do not turn the inner tube more than ½ rotation, counterclockwise/outwards (2). This must be respected
otherwise it can result in collapse of the application.

1

Linear Actuators | 62

LA27
The actuator LA27 is a powerful actuator designed for a variety of medical
applications. It is developed for both push and pull applications and has avery robust construction because of the ultrasonic-welded plastic housing.

Usage
Duty cycle:

2/18; 2 minutes continuous use followed by 18 minutes not in use

Ambient temperature:

5 oC to +40 oC (the actuator must also have this temperature)

Approvals:

IEC 60601-1
ANSI/AAMI ES 60601-1
CAN/CSA C-22.2 No. 60601-1

Lifetime:

With connection to a static voltage power supply of 33 V, the lifetime
could be reduced to 5000 cycles (at a constant load of 6,000 N).

Information
For CB6, the current will be cut off when the total current on all channels reaches approx. 5.1 to 5.4 Amp.
This means that when two LA27s, running simultaneously, are connected to a CB6, they will not be able tolift the max. load mentioned under technical specifications.

Warnings• The installation of spline actuators is recommended by LINAK where possible to avoid the squeezing ofbody parts.
• Activation of a quick release can lead to a risk of squeezing body parts. Installation of a damper may
reduce this risk.
• A quick release can accidentally be activated during mounting or maintenance. To avoid this, operators
must be warned before service/mounting.
• End of life issue: defective switches - endstop:
If the electrical endstop switch for outward operation fails, it may cause a prolonged actuator stroke andin addition the customer application may collapse. To avoid this, the manufacturer must take this into
account when designing and making a risk analysis.
• If electrical endstop fails to function the actuator will continue to retract or extend until mechanicalendstop is reached.
The application of the customer must be able to obtain or withstand an actuator with failing electricalendstop.
Minimum length of actuator reaching mechanical endstop: BID - 5 mm.
Maximum length of actuator reaching mechanical endstop: BID + SL + 5 mm.
• If the actuator does not work as intended, there is a risk of injury. Therefore, the actuator must
immediately be sent to the nearest authorised LINAK workshop for service.
• The actuator is not designed for repeated dynamic push-to-pull movement.

Linear Actuators | 63

Recommendations• The LA27 cable is not part of the actuator and must therefore be ordered separately.
• Once a year, the actuator must be inspected for wear and jarring sounds.
• In medical applications we recommend to use a safety nut.
• Do not expose actuators without all cables fitted to water/cleaning.
• The bolt inside the back fixture should have no thread.
• LA27 is not meant to have CB6S OBF mounted on the actuator. CB6S OBF must be mounted separately
using a bracket.
• LA27 must have a minimum installation dimension of 320mm if control box CB6 is to be mounted on theactuator.
Instruction concerning the turning of the piston rod eye – LA27
When mounting and taking into use, it is not permitted to make excessively manyturns of the piston rod eye. In cases where the eye is not positioned correctly, it ispermitted to first screw the eye down to its bottom position (1), and then a maximum
half turn outwards again (2).

Quick release
Mounting of the release cable
Remove the Quick Release cover, and the cable mounting holes
can be seen.

Mount the cable in one of the cable mounting holes/slots.
(If needed both holes/slots can be used)

Replace the Quick Release cover all the way so that it “clicks” into
place.

Linear Actuators | 64

Application requirements for Quick Release (QR)
To avoid damage to the LA27 with QR, it is necessary for certain parameters to be specified in theapplication. You should therefore be aware of the following facts when supplying an LA27QR to acustomer.
Constant pressure on the actuator:• The QR mechanism can handle a maximum of 100 N pull load otherwise it will risk jamming. Thismeans that the actuator must always have a load applied in order not to risk jamming and ensure
correct operation.
• When the QR mechanism is activated, there must be a minimum load on the actuator in order toensure that the actuator runs inwards. This load depends on the spindle pitch:– 5 mm must have 750 N load
– 6 mm must have 500 N load
Mechanical stop in the application:• When the QR mechanism is activated, the actuator will run inwards until it is stopped either by theapplication or by the actuator. The actuator is not constructed to absorb the impact that can occur
when the QR mechanism is activated and the actuator is driven into the endstop with a full load.
• Therefore, a mechanical stop must be built into the application to stop the movement at a distance of
5 mm before the actuator moves into endstop and blocks.
Activation of QR function:• If the QR mechanism is activated during running of the actuator, the QR mechanism might jam. To
unjam the QR mechanism , it might be necessary to first run the actuator by means of the handcontrol.
Use the QR function:• LA27 with QR is designed to be used as part of the bed backrest.
• If the backrest needs to be brought in horisontal position as quickly as possible, the QR handle isactivated to lower the backrest. When the actuator is no longer in motion, the QR handle is released.
The QR cover must be mounted:• To ensure that the Bowden cables are fixed correctly, the QR cover must be mounted.

Linear Actuators | 65

Quick Release cable dimensions

Recommendations• The release cable has to be provided by the customer.
• The force required to operate the Quick Release is approx. 1-28 kg depending on the actuator load.
• When operating the Quick Release function, the Quick Release must be activated all the way down andnot stopped halfway• The Quick Release mechanism can only be ordered with 5 and 6 mm pitch

Linear Actuators | 66

Mounting bracket instructions

Recommendations
To avoid damage to the actuator when the actuator is in the “rest” position, there should be no load/tension
on the actuator.

LA27 without cable lock

LA27 with cable lockLinear Actuators | 67

Feedback specifications
Signal (0)
1

NC

2

COMMON EOS

3

M+ (motor/power)

4

EOS IN5

EOS OUT

6

M- (motor/power)

Encoded (B)OpenBus

EOS

1

NC

150 - 1150 mVIN

2

COMMON EOS

1150 - 2150 mV

OUT

3

M+ (motor/power)

2150 - 3150 mV

NONE

4

EOS IN<150mV or >3150mV

ILLEGAL5

EOS OUT

6

M- (motor/power)*Voltage is detected and interpretedby the CB

Encoded with dual hall (A)IntervalHall-A

EOS

1

GND

2,900 - 2,917 V

LOW

NONE

2

VCC

2,400 - 2,374 V

HIGH

NONE

3

M+ (motor/power)

1,900 - 1,911 V

LOW

OUT

4

Analogue encoded (Hall-A+EOS* IN/OUT)

1,400 - 1,424 V

HIGH

OUT

5

Hall B

0,900 - 0,88 V

LOW

IN

6

M- (motor/power)

0,400 - 0,461 V

HIGH

IN

Power switch (1)
1

NC

2

Low when HB Down

3

M+ (motor/power)4

Low when HB Up

5

NC

6

M- (motor/power)Linear Actuators | 68

LA28
LA28 is primarily a system actuator. The actuator is very quiet and powerful,designed for the use in the CARELINE®, MEDLINE® and TECHLINE® areas ofbusiness.

Usage
Duty cycle:

Max. 10 % or 2 min. continuous use followed by 18 min. not in use

Ambient temperatures:+5 °C to +40 °C

Compatibility:

Compatible with LINAK control boxes. Please contact LINAK.

Approvals:

IEC 60601-1
ANSI/AAMI ES60601-1
CAN/CSA-22.2 No 60601-1

Recommendations• LINAK control boxes are designed so that they will short-circuit the motor terminals of the actuator(s),when the actuator(s) are not running. This solution gives the actuator(s) a higher self-locking ability. If
the actuator(s) are not connected to a LINAK control box, the terminals of the motor must be shortcircuited to enable self-locking of the actuator.
• The maximum load in pull is 2000N• Min. stroke length for LA28 with splines is 80 mm• The current supply to LINAK actuators must be cut off in case of overload and when the actuators reachend position• Ambient operating temperature is 22°C

Warnings• Do not use the actuator outside specified working limits.

Further information
Noise level• LA28: dB(A) 45; measuring method DS/EN ISO 3743-1, actuator not loaded• LA28S: dB(A) 54; measuring method DS/EN ISO 3743-1, actuator not loaded
Material• The piston rod eyes are “crimped” in place and cannot be screwed loose.

Protective cap“Crimped” piston rod eye

Piston rod without eye (not tested)Linear Actuators | 69

LA28 - PC board version C
Colour codes

LA28 with reed switch

Cable connection:

S

Black

R

Red

GU

Yellow

G

Grey

BL

Blue

GR

Green

Linear Actuators | 70

LA28 Compact
The LA28 Compact is a small and powerful actuator designed for use insystem solutions for healthcare equipment or industrial applications.
Ideal applications are for example wheelchairs, treatment chairs, patient lifts
or beds.

Usage
Duty cycle:

Max 10 % or max. 2 min. continuous use followed by 18 min. not in use

Ambient temperature:+5 °C to +40 °C

Compatibility:

Compatible with LINAK control boxes. Please contact LINAK.

Approvals:

IEC 60601-1
ANSI/AAMI ES60601-1
CAN/CSA-22.2 No 60601-1

Recommendations• LINAK control boxes are designed so that they will short-circuit the motor terminals of the actuator(s),when the actuator(s) are not running. This solution gives the actuator(s) a higher self-locking ability. If theactuator(s) are not connected to a LINAK control box, the terminals of the motor must be short-circuited
to enable self-locking of the actuator LA28 Compact.
• Min. stroke length for LA28 with splines is 80 mm• The current supply to LINAK actuators must be cut off in case of overload and when the actuators reachend position.
• Ambient operating temperature is 22°C.
• LA28 Compact cannot be used in pull applications, unless fitted with an aluminium back fixture.
Further information
Noise level• LA28: dB(A) 45; measuring method DS/EN ISO 3743-1, actuator not loaded• LA28S: dB(A) 54; measuring method DS/EN ISO 3743-1, actuator not loaded
Material• The piston rod eyes are “crimped” in place and cannot be screwed loose.

Protective cap“Crimped” piston rod eye

Piston rod without eye (not tested)Linear Actuators | 71

LA29
This particular LINAK® actuator is the ideal choice in medical equipment
where power and speed are required, but where space is limited.

Usage
Duty cycle:

10% or 2 minutes continuous use followed by 18 minutes not in use

Usage temperature:+5 oC to +40 oC

Storage temperature:-10 oC to 50 ºC

Compatibility:

Compatible with LINAK control boxes. Please contact LINAK.

Relative humidity:

20% to 80% - non-condensing

Atmospheric pressure:

700 to 1060 hPa

Height above sea level:

Max. 3000 meters

Declaration of Conformity:

A CE Declaration of Conformity has been issued

Mounting instructions

Drawing no.: LA29005A

Linear Actuators | 72

Recommendations• The LA29 actuator must not be used in applications where the actuator is exposed to torque moment, as
this will damage the actuator.
• Do not use any other screws for the mounting brackets than those recommended by LINAK. If longer
screws are used they will come into contact with the inner parts of the actuator. This will result in an
irregular operation or even damage the actuator.

Warnings• If an LA29 is used in an application with repeated dynamic push/pull, it is necessary to contact LINAK
A/S in order to make a correct specification of the actuator. Repeated push/pull movements cause extra
strain on the actuator and can give safety considerations, the consequence being possible actuator
damage.
• Do not sideload the actuator.
• Inspect the actuator at least once a year for war and jarring sound.

Linear Actuators | 73

Hall feedback
Dual Hall, encoded is used only for LINAK A/S control boxes.
Dual Hall, digital is used for non-LINAK A/S control boxes.
Feedback specification: dual Hall, digital positioning.

Item
Pin configuration

Specification

Comment

Pin 1

GND

Connector front view:

Pin 2

VCC

Pin 3

M+

Pin 4

HALL A

Pin 5

HALL B

Pin 6

M-

VCC

4-15V

Current

Maximum 20 mA.
See diagram.

Hall A/B

tstate is minimum 5ms in all states (11,10,00,01)

Feedback circuit has to be powered 50ms
before driving, and until actuator has stopped.

Duty cycle Hall A 30-70%
Duty cycle Hall B 30-70%
Low level <GND+0.5V @10kΩ and 1nF load
High level >VCC-0.5V @10kΩ and 1nF load
Driving out, the Hall B signal will go high when Hall A
signal is low.
Driving in, the Hall A signal will go high when Hall B
signal is low.w

Resolution

The feedback system gives 12 state shifts per spindleturn.
3mm pitch => 0.25mm per shift
4mm pitch => 0.3333mm per shift

On 100mm stroke you will have the following
number of pulses:
3mm pitch => 400 shifts
4mm pitch => 300 shifts

Linear Actuators | 74

LA30
LA30 is a powerful actuator yet small enough to fit most applications.
The actuator can be supplied with options such as built-in potentiometerfor servo operation or an extra powerful motor for increased speed andstrength (S-motor). In addition to industrial and agricultural applications,the actuator is also ideal for positioning satellite dishes.

Usage
Duty cycle:

10%, 2 minutes continuous use followed by 18 minutes not in use

Ambient temperature:+5 °C to +40 °C

Storage temperature:-40 °C to +70 °C

Compatibility:

Compatible with LINAK control boxes. Please contact LINAKApprovals:

IEC60601-1
ANSI/AAMI ES60601-1
CAN/CSA-22.2 No 60601-1

Recommendations
LINAK control boxes are designed so that they will short-circuit the motor terminals (poles) of the actuator(s),when the actuator(s) are not running. This solution gives the actuator(s) a higher self-locking ability. If theactuator(s) are not connected to a LINAK control box the terminals of the motor must be short-circuited toachieve the self-lock ability of the actuator.

Improved self-locking ability+

The H-bridge ensures that the motor is shorted when the relays are inactive. Thisis necessary to improve the self-locking of the actuator.

M

When using LA30 with stereo jack plug be aware of the reversed direction of travel asstandard.
The current supply to LINAK actuators must be cut off in case of overload when the actuators
reach end position.

Various other information
Noise levels
LA30: dB(A) 50; LA30S: dB (A) 55; LA30L: dB(A) 48.
Measuring method DS/EN ISO 3743-1, actuator not loaded.

Linear Actuators | 75

LA30 Actuator with potentiometer

Red / Yellow

Green / White++Green / WhiteRed / Yellow

Brown

Blue

Black

+

Out going
In going

LA30 Actuator with reed (only possible with 24 V L-motor)

Brown

3.9 k

Black
Out going++

In going

Brown

Black

Blue

Pulse

Please note that the voltage level og feedback signal depends on the actuator load.

Linear Actuators | 76

LA30 Actuator with optical encoder
Yellow Black
Green

Red
Blue

LA30 med LSD

White Black Red BlueLinear Actuators | 77

LA31
The LA31 is a compact, quiet and powerful actuator designed for a variety
of applications in the MEDLINE® & CARELINE® segment, such as hospitalbeds, couches and nursing home beds.
The standard LA31 actuator features known parts such as piston rod eyewith slot, and comes in different variations with e.g. fast motor and hallpositioning and manual lowering. The LA31 actuator has exchangeable
cables and is ideal in combination with OpenBus™ control boxes.
The LA31 actuator has an ingress protection of IPX6 and is available inversion with up to 6000 N in push or 4000 N in pull.

Usage
Duty cycle:

Max 10% or 2 minutes continuous use followed by 18 minutes not in use

Cycles:The LA31 life cycle test has been performed with a stabilised power supply(10% duty cycle) on a 200 mm stroke actuator at max. load for 10,000
cycles (at ambient temperature)

Ambient temperature:+5 °C to + 40 °C

Compatibility:

Compatible with LINAK control boxes. Please contact LINAK.

Approvals:

IEC 60601-1
ANSI/AAMI ES60601-1
CAN/CSA-22.2 No 60601-1

Information• The product is not designed for dynamic load changes (from push to pull or vice versa. If the application
design requires a product with a dynamic load change capability, please contact LINAK for investigationof product feasibility or guidance.

Exchangeable cables
Recommendations• When using LA31 with reed feedback in combination with the following control boxes: CB8, CB14 and
JUMBO control boxes, please use the cable type 10A31-X5XXXXX-XXXX-X to avoid control box damage

Linear Actuators | 78

Hall feedback
Dual Hall, encoded is used only for LINAK A/S control boxes.
Dual Hall, digital is used for non-LINAK A/S control boxes.
Feedback specification: dual Hall, digital positioning.

Item
Pin configuration

Specification

Comment

Pin 1

GND

Connector front view:

Pin 2

VCC

Pin 3

M+

Pin 4

HALL A

Pin 5

HALL B

Pin 6

M-

VCC

4-15V

Current

Maximum 20mA.
See diagram.

Hall A/B

tstate is minimum 5ms in all states (11,10,00,01)

Feedback circuit has to be powered 50ms before
driving, and until actuator has stopped.

Duty cycle Hall A 30-70%
Duty cycle Hall B 30-70%
Low level <GND+0.5V @10kΩ and 1nF load
High level >VCC-0.5V @10kΩ and 1nF load
Driving out, the Hall B signal will go high when Hall A
signal is low.
Driving in, the Hall A signal will go high when Hall B
signal is low.w

Resolution

The feedback system gives 12 state shifts per spindleturn.
3mm pitch => 0.25mm per shift
4mm pitch => 0.3333mm per shift

On 100mm stroke you will have the following
number of pulses:
3mm pitch => 400 shifts
4mm pitch => 300 shifts

Linear Actuators | 79

Hall potentiometer
Input/output specifications: absolute positioning
Item

Specification

Comment

Description

The actuator can be equipped with an electronic
circuit that gives an analog feedback signal when
the actuator moves.

Input voltage

VCC = 12 - 25 VDC

Feedback circuit to be powered 1 second before
motor runs, and until 1 second after the motor has
stopped.
Cable dimension: 2 x AWG18 and 4 x AWG26

Output voltage

POT OUT
0 - 5V0 - 10V
0V = Fully retracted
10V = Fully extended+/- 0.5V @ Load > 100KΩ

Current
consumption

Current consumption is max.
40mA.

Also when actuator is not running

Connection diagram

M+
SIGNAL

Cable connections
Mini-Fit
Connector

Definitions

Pin 1

N/A

Pin 2

VCC

Pin 3

M+

Pin 4

POT-OUT

Pin 5

GND

Pin 6

M-

4

5

6

6

5

4

1

2

3

3

2

1

Connector front
view

PCBA Header top
viewLinear Actuators | 80

Mounting bracket instructions
Application mounting bracket

Piston rod

Note the recommended design for themounting bracket hole.

Drawing number: 031895
Recommendations• LA31 with internal quick release types A and B is not designed for use in pull.
• The necessary release force on an actuator with 5mm pitch is 75 kg for 6 mm pitch = 50 kg.
• LA31 with quick release is always with brake (push).
• The flexible back fixtures (05 or 06) must be standard when the LA31 is equipped with quick release.
• When operating the QR function of QR types A and B, the QR must be activated all the way down.
Otherwise the QR will no longer function.

Mounting of the release cable
Removal of QR cover

QR cover removed

Replacement of QR coverUse only light pressure near thesnap-on flanges to lift the cover

Here the cover is removed and the Use only a small amount ofcable mounting can be seenpressure to replace the QR coverMax. angle of movement
Information
To ensure operation the Quick Release must be rotated 45o(max.) due to tolerance/load variation. Some units may operate
before 45o is reached.
To avoid damaging the QR, it should not go above 45o.

Drawing no.: 031944

Linear Actuators | 81

Recommendations• The release cable has to be provided by the customer.
• The design of the release cable has to be as specified.
• It is important to observe the max. active (the moving part of the cable) cable length of 12mm. Do notpull more than this length otherwise the QR will be damaged!
• The force required to operate the Quick Release is approx. 5 kg.
• When more than the recommended 5 kg force is used to activate the QR, more friction will be created in
the internal actuator/QR mechanism. This means that a greater load will be required to ensure successful
operation.
• The QR cover is supplied attached to the actuator but not mounted.
• LA31 with external quick release, types I, K, L, and M can maximum pull 200N.
• The necessary release force on an actuator with 5mm pitch is 75 kg for 6 mm pitch = 50 kg.
• It is not possible to combine splines with the external quick release.
• LA31 with quick release is always with brake (push).
• The flexible back fixtures (05 or 06) must be standard when the LA31 is equipped with quick release.
• LA31 with brake:
An LA31 brake in a push application brakes actively when the actuator moves in an inward direction.
The same applies to an actuator mounted with a brake in a pull direction. It brakes in an outward
direction. Under this condition the standard motor uses up to 4 Amp. and the fast motor uses up to 6
Amp. (Measured after 5 cycles at normal room temperature). Therefore, if the LA31 with brake is used
together with a CB7, it is important that the current cut-off limit of the control box is higher than theused Amp. i.e. not lower than 4 Amp.
• LA31 with brake cannot be combined with CB9/CB7 with manual lowering. For all LA31 actuators withbrake self-locking ability up to max. load it is only possible in one direction: push or pull.
• The LA31 actuator must not be exposed to more than 4000 N in pull. In applications where
misalignments may occur the normal back fixture can take max. 1500 N in pull whereas the flexible backfixture can take up to 4000 N in pull. The actuator must be mounted at right angles(90º) to its fixing/
load (max. 1.5º deviation).
• LA31 actuators with protection class IPX6 must be mounted with the screw holes mounted faced
downwards. This is to ensure that any water remaining from cleaning/washing is not collected in thescrew holes.

Correct mounting

Not OK

OK

OK

Drawing number: 31I080

Linear Actuators | 82

Warnings• The actuator must not be used in pull applications when the Quick Release is activated, as the risk of
personal injury can arise.
• Bowden cable must click twice, in order to be locket sufficiently.
• Do not sideload the actuator• Inspect the actuator minimum once a year for wear and jarring sound.
• The actuator is not designed for repeated dynamic push-to-pull movement.

LA31 actuators for patient hoists are marked with a label to ensure the user is awarethat it is not permitted to handle the patient hoist by pulling the actuator or otherwise
expose it to side forces.

LA31 with mechanical end stop - a first failure safe option
In many applications our customers have approvals according to EN 60601-1.
The typical applications can be beds, massage couches etc.
In the norm, EN 60601-1, it is mentioned that the application must be first failure safe. The manufacturer is
responsible for making a risk analysis in order to check this. If a risk is identified, it is the manufacturer of theapplication who makes sure that the risk is eliminated.
There are several ways that an application can be made first failure safe:• Use a mechanical stop in the application.
• Use of a mechanical end stop in LA31 is a possible option.
• Use an SLS (safety limit switch) in connection with the actuator.
• As a special solution we can offer LA31 with mechanical end stop with the same installation dimension asa standard LA31.

Warnings
To avoid damage to the actuator• When the application is in the “rest” position there should be no load/tension on the actuator.
• If electrical end stop fails to function, the actuator will continue to retract or extend until mechanical end
stop is reached.
• The application of the customer must be able to obtain or withstand an actuator with failing electrical end
stop.
• Minimum length of actuator reaching mechanical end stop: nominal BID - 7 mm.
• Maximum length of actuator reaching mechanical end stop: nominal BID + nominal SL + increase + 7 mm.

Linear Actuators | 83

LA31 with manual lowering
The purpose of the ML (Manual Lowering) is in case of a power failure, to be able to mechanically lower apatient by turning the ML part in the clockwise direction until the actuator is fully lowered.

Recommendations• An addition of 35mm to installation dimension compared to standard (with spline)• Only for push applications• Use spline actuators• Cannot be retro fitted

Linear Actuators | 84

LA34
LA34 is a technological state-of-the-art actuator that, due to its innovative
construction can push up to 10000 N at a speed of 5 mm/sec. and with acurrent consumption of approx. 7 Amp. The strong LA34 actuator is madein a low weight composite material.
Its compact design, the outstanding performance and a wide range ofsafety options makes LA34 the right choice for a variety of medical andindustrial applications.
The LA34 24V actuator is approved according to IEC 60601-1, ANSI / AAMI
ES60601-1, and CAN / CSA-22.2 No 60601-1.

Options• Mechanical spline: When using the actuator in a vertical position, the force needed to activate themechanical spline is maximum 60N + the weight of the application. To reengage the spline function, aforce of maximum 60N is needed. Same installation dim. as standard actuator.
• A modified Bowden cable holder is available (as a special article), with better cable alignment andimproved guidance of the cables.
• Electric spline: When using the actuator in a vertical position, the force needed to activate the electric
spline is maximum 100N + the weight of the application. To reengage the spline function, a force of
maximum 100N is needed.

Usage
Duty cycle:

2/18 – 2 minutes continuous use followed by 18 minutes not in use

Ambient temperature:+5 °C to +40 °C

Compatibility:

Compatible with LINAK control boxes. Please contact LINAK.

Approvals:

IEC60601-1
ANSI / AAMI ES60601-1
CAN / CSA-22.2 No 60601-1 for LA34 24V.

Recommendations• Power supply without current cut-off can cause serious damage to the actuator if mechanical stop is
encountered or the actuator movement is blocked in another way.
• LINAK control boxes are designed so that they will short-circuit the motor terminals (poles) of theactuator(s) when the actuator(s) are not running. This solution gives the actuator(s) a higher self-locking
ability. If the actuator(s) are not connected to a LINAK control box the terminals of the motor must be
short-circuited to achieve the self-locking ability of the actuator.
• The choice of the compact housing will increase the cable length by approx. 75 mm.
• It is not possible to combine electrical splines with quick release in pull.

Linear Actuators | 85

Warnings• An LA34 actuator is not designed for repeated dynamic push-to-pull movements. This cause extra
strain to the actuator and can give safety considerations, the consequence being possible damage tothe actuator. Therefore, if repeated dynamic push-to-pull movements are essential for the application,
perform tests to validate the performance and use a steel piston rod eye (contact LINAK A/S).
• LA34 actuators for patient hoists are marked with a label to ensure the user is aware that it is not
permitted to handle the patient hoist by pulling the actuator or otherwise expose it to side forces.

• Please ensure, when replacing the LA34 zinc actuator with an LA34 composite actuator, that a test is
made in the application. All changes from zinc to composite, with the special option Quick Release, has
to be ordered using the sample order flow (CP9).
• If electrical end stop fails to function, the actuator will continue to retract or extend until mechanical end
stop is reached.
• The customer’s application must be able to take up or withstand an actuator with failing electrical end
stop.

Linear Actuators | 86

Potentiometer
Item

Specification

Description

The actuator can be equipped with apotentiometer for precise positioning. The
potentiometer is a variable resistance, themagnitude of which varies linearly with theposition of the actuator rod.

Type for LA34 Composite

ALPS RDC40, 0-10 kOhm ±30%, linearity ±1%

Type for LA34 Zink

Bourns 3590S, 0-10 kOhm ±20%, linearity±0,25%

Input voltage

3.3V recommended

Pin configuration

LA34 Mini-fit plug cable (potentiometer)

Potentiometer
Pot GND
Vbus
M+ (Motor/Power)
Pot Position
Pot + (3V3)
M- (Motor/Power)

Pin1
Pin2
Pin3
Pin4
Pin5
Pin6
Combinations

The potentiometer cannot be combined withelectric spline.

Brown

+

Blue

Yellow

Red

LA34 with potentiometer

Green

Comment

PCBA header top viewLinear Actuators | 87

Hall
Item

Specification

Description

The actuator can be equippedwith dual Hall that gives a relative positioning
feedback signal when the actuator moves.

Comment

Input voltage

4-15V

Current

Maximum 20mA.
See diagram.

Pin configuration

LA34 Mini-fit plug cable (Hall)
Hall

Feedback circuit has to be
powered 50ms before driving,
and until the actuator has stopped moving.

Pin1

Hall GND

Pin2

Vbus

Pin3

M+ (Motor/Power)

Pin4Hall A

Pin5

Hall B

Pin6

M- (Motor/Power)

LA34 with pulse system

LA34 with electronic pulse coder (reed switch)

PCBA header top viewLinear Actuators | 88

LA40
The LA40 is a low noise and powerful actuator which is available in a
1,500 N, 4,000 N, 6,000 N and an 8,000 N version.
With the LA40, LINAK offers a new durable actuator with high speed/highperformance and mechanical endstop for first failure safety making it theright choice for the future market. The LA40 versions are rated up to IPX6
Washable DURA™, except for the LA40 PL version which is rated up to
IPX6.
The LA40 8,000 N is available in three versions• Standard• High Performance (HP)
• Patient Lift (PL)

Usage
Duty cycle:

10%, 2 minutes continuous use, followed by 18 minutes not in use

Usage temperature:

5 ºC to 40 ºC

Storage temperature:-10 ºC to 50 ºC

Compatibility:

Compatible with LINAK control boxes. Please contact LINAK.

Relative humidity:

20% to 80% - non-condensing

Atmospheric pressure:

700 to 1,060 hPa

Height above sea levelMax. 3,000 meters

Flammability rating:

UL94V-2

Approvals:

IEC 60601-1
ANSI/AAMI ES60601-1
CAN/CSA-C22.2 No 60601-1

The product is not designed for dynamic load changes (from push to pull or vice versa). If the application
design requires a product with a dynamic load change capability, please contact LINAK for investigation of
product feasibility or guidance.

Linear Actuators | 89

Warnings• The installation of spline actuators is recommended by LINAK where possible to avoid the squeezing ofbody parts.
• The safety option manual lowering makes it possible to turn the inner tube down by hand in emergency
cases or if electrical power is not available.
• Activation of a quick release can lead to a risk of squeezing body parts. Installation of a damper may
reduce this risk.
• A quick release can accidentally be activated during mounting or maintenance. To avoid this, operators
must be warned before service/mounting.
• End of life issue: defective switches - endstop:
If the electrical endstop switch for outward operation fails, it may cause a prolonged actuator stroke andin addition the customer application may collapse. To avoid this, the manufacturer must take this into
account when designing and making a risk analysis.
• If electrical endstop fails to function the actuator will continue to retract or extend until mechanicalendstop is reached. The application of the customer must be able to obtain or withstand an actuator withfailing electrical endstop.
Minimum length of actuator reaching mechanical endstop: BID - 7 mm.
Maximum length of actuator reaching mechanical endstop: BID + SL + 7 mm.
• If the actuator does not work as intended, there is a risk of injury. Therefore, the actuator must
immediately be sent to the nearest authorised LINAK workshop for service.
• The actuator is not designed for repeated dynamic push-to-pull movement.

Recommendations• Power supply without current cut-off can cause serious damage to the actuator if a mechanical stop is
encountered or the actuator movement is blocked in another way.
• Connection bolts must be dimensioned so that they have the necessary strength and tolerance in order toobtain the minimum safety factor according to the requirements of the authorities.
• The actuator must not be subject to a side load, as this can cause bending/collapse of the actuator. The
actuator must never be used as a handle.
• The actuator must not be subject to off-centre loading, as this can cause bending/collapse of theactuator.
• The actuator must not be subject to impact, or any form of stress to the casing.
• The actuator must not be subject to overload, as this can reduce the lifetime of the actuator and in theworst case cause damage to the actuator.
• Only use the actuator within the specifications.
• Connection bolts and brackets are to be inspected in connection with service, and must be replaced if
there are signs of wear.
• Ensure that the cable lock is mounted correctly.
• Ensure that the duty cycle and the usage temperatures for LA40 actuators are respected.
• Ensure that the cable cannot be squeezed, pulled or subjected to any other stress.
• The LA40 is not suitable for use in outdoor applications where it can be exposed to sun and rain.

Linear Actuators | 90

Recommendations• LA40 with mechanical endstop - a first failure safe option:
In many applications customers have approvals in accordance with EN 60601-1. The typical applications
are beds, massage couches etc. The norm EN 60601-1 states that the application must be first failure
safe. The manufacturer has the responsibility of carrying out a risk analysis in order to check this. If a risk
is identified, the application manufacturer must ensure that this risk is eliminated. A switch cannot be first
failure safe.
• Patient lift and stand aids:- Long installation dimension: must always be used for patient lifts.
- Do not hold the inner or outer tube while the actuator is running. There can be a risk of squeezing
between the manual lowering unit and the outer tube.
- Always use the ratchet spline functions for patient lifts.
• LA40 8,000 N PL actuators for patient lifts are marked with a label to ensure that the user is aware that it
is not allowed to pull the actuator or otherwise expose it to side forces when handling the patient lift.
• If the actuator is used in dynamic push and pull, noise and extended play in axial direction
may occur during lifetime due to wear and tear.
• The max. pull load and guidelines for safety arrangements in accordance with the User
Manual must be respected.
• If the damper is activated too frequently, there is a risk of reduced damping effect.
Therefore, a 30-minute cool-down period is recommended.
• The damper functionality is not designed to work in environments with low temperatures (below 0 °C).
The actuator may become defective and/or the damping effect may be reduced.
• If the load on the actuator is too low, the damper will not be activated and the actuator will work withquick-release effect only.
• If the load on the actuator is too low and the QR is activated (i.e. when a caregiver uses QR for cleaning
purposes), high clicking sounds may occur during the actuator lowering. This is caused by the damper
functionality and does not mean any actuator or damper damage.

Instruction concerning the turning of the piston rod eye
When mounting and taking into use, it is not permitted to turn the piston rod eye several times. In cases
where the eye is not positioned correctly, the eye must be screwed to its bottom position (1) and thenmaximum half a turn outwards again (2).

Mounting bracket instructions
To avoid damage to the actuator, it is important that the actuator drives to the application endstop positionand continues to operate in the groove until it activates the electric actuator endstop.

To avoid accumulated water inside the quick release lid (see illustration) it isrecommended not to mount the LA40 quick release actuator with the lid in
downward position.

Linear Actuators | 91

Manual lowering
The picture to the right illustrates the manual lowering procedure.
In case of a power failure, it is possible to mechanically lower a patient placed in apatient lift. When turning the manual lowering handle clockwise, the actuator canbe moved fully inwards.

Spline• Required minimum push load 200 N on the actuator to allow inward movement(otherwise the spline can be activated) (picture 1)• Required activation pull force during inward operation:<100 N to activate the ratchet spline to avoid squeezing situations. (picture 2)• For QR versions:
Force required to manually activating spline (actuator not in operation): Static pull force = 300-550 N.
For manual pull out (extend) of the inner tube. (picture 3)

Push:

Pull:

200 N
(Ratchet spline for
HP and PL versions)<100 N(Ratchet spline for
HP and PL versions)Pull:
300- 550 N(Ratchet spline for
QR versions)Damper function
The LA40 QR can be equipped with an internal damper mechanism. The damper inside the LA40 provides aslower lowering speed, compared to the normal QR lowering speed which is faster.
When the QR is activated, with the existence of a certain amount of push load, the spindle rotation speed
will engage the Damper mechanism and will start a slower lowering. The speed when the damper isactivated will be load dependent and the damper is only acting as an extra friction when QR-lowering is
activated.

Linear Actuators | 92

Mounting of the quick release cable
15.7

2x 6

5.7

Cable dimensions inside the quick
release housing required to ensure
correct operation.

2x 2

2x

25
20

Drawing no.: 0404016-1

15.7

25
20

Quick release mechanism in its
nonactivated position.
Note that the cable fixture has amaximum travel distance of 20 mm
until it hits the housing wall thatacts as end stop.
The application design must ensurethat the quick release cable cannot
be pulled the full travel to end stopwith excessive pull force.
This is to protect the quick release
unit.

Drawing no.: 0404017-1

Linear Actuators | 93
When the cable is pulled, the quick
release is activated with certainty
when the cable has less than 12mm travel distance to give.

Drawing no.: 0404016-2

15.7

12
7

Drawing no.: 0404017-2

At the point when the quick releaseis activated with certainty, the cablefixture has 7 mm travel left before it
hits the end stop.

Linear Actuators | 94
Make sure that the actuator is unloaded at its fully
retracted position!
Open the quick release lid using a flat-head screwdriver.
Push and tip to release the lock.

Run the cablethrough the slot of the mounting hole forthe jacket collar. Pull the cable until the jacket collar is inplace.
If needed, support the cable jacket by holding it so thatit stays in the mounting hole for the jacket collar.

Place the cylindrical cable end in the cable fixture.
Repeat the procedure if two release cables are used.

If the cable is equipped with a barrel adjuster
mechanism at the opposite cable end, then use it toadjust the cable to the recommended cable length. See
drawing no. 0404016-1.
Verify that the quick release mechanism is completely
released when the cable is not pulled. Also verify thatthe cable can be pulled almost to the endstop.

Close the lid.
Now test that the quick release is functional by pullingthe cable with the actuator extracted.
Approximate force required to operate the quick
release:55 N at an actuator load of 750 N
90 N at an actuator load of 4,000 N

When operating the quick release function, the quick release must be activated all the way down and not
stopped halfway.

Linear Actuators | 95

Feedback specifications
E2 (Signal)
1

NC

2

COMMON EOS*

3

M+ (Motor/Power)

4

EOS IN5

EOS OUT

6

M- (Motor/Power)*EOS equal to end of stroke

E3 (Encoded)

Analogue encoded

EOS

1

GND

2.65V-3.25V

NONE

2

VCC

2.15V-2.65V

NONE

3

M+ (Motor/Power)

1.65V-2.15V

OUT

4

Analogue encoded (Hall-A+EOS* IN/OUT)

1.15V-1.65V

OUT

5

NC

0.65V-1.15VIN

6

M- (Motor/Power)

0.05V-0.65V

IN

E3 (Encoded) F3 (dual Hall encoded)IntervalHall-A

EOS

1

GND

2.65V-3.25V

LOW

NONE

2

VCC

2.15V-2.65V

HIGH

NONE

3

M+ (Motor/Power)

1.65V-2.15V

LOW

OUT

4

Analogue encoded (Hall-A+EOS* IN/OUT)

1.15V-1.65V

HIGH

OUT

5

Hall B

0.65V-1.15V

LOW

IN

6

M- (Motor/Power)

0.05V-0.65V

HIGH

IN

*EOS equal to end of stroke*EOS equal to end of stroke
E1 (Power switch)
1

NC

2

NC

3

M+ (Motor/Power)

4

NC

5

NC

6

M- (Motor/Power)

E1 (Power switch) F2 (dual Hall) See next page
1

GND

2

VCC

3

M+ (Motor/Power)

4

Hall A

5

Hall B

6

M- (Motor/Power)Linear Actuators | 96

Feedback specifications
Dual Hall, Encoded (F3) is used only for LINAK A/S control boxes.
Dual Hall, digital (F2) is used for not LINAK A/S control boxes.
Dual Hall, digital (F2) positioning.
Item

Specification

CommentPinconfiguration

Pin1

GND

Pin2

VCC

Pin3

M+

Pin4

HALL A

Pin5

HALL B

Pin6

M-

VCC

4-15V

Current

Maximum 15 mA @10kΩ and 1nF load.
See diagram.

HALL A/B

TState is minimum 5 ms in all states (11,10,00,01)

Connector in LA40 housing:

6

5

4

3

2

1

Feedback circuit has to be powered 50ms
before driving, and until actuator has stopped
movingDriving out:

Duty cycle Hall A 30-70%
Duty cycle Hall B 30-70%
Low level <GND+0.5V @10kΩ and 1nF load
High level >VCC-0.5V @10kΩ and 1nF load
Driving out, the Hall B signal will go high when Hall A
signal is low.

Resolution

Driving in, the Hall A signal will go high when Hall B
signal is low.w

Driving in:

The feedback system gives 16 state shifts per spindleturn.
3 mm pitch => 0.1875mm per shift
4 mm pitch => 0.25mm per shift

On 100 mm stroke you will have the following
number of pulses:
3 mm pitch => 533 shifts
4 mm pitch => 400 shifts

Linear Actuators | 97
E1 (power switch) F6 (potentiometer)
1

GND

2

NC

3

M+ (motor/power)

4

Potentiometer feedback

5

VCC

6

M- (motor/power)

Feedback specification
VCC max.

5V

Resistor

8-12 kΩLinearity (±2% of *maximum stroke)±5.8 mm

Precision (±5% of *maximum stroke)±14,5 mmCalculation of maximum stroke length
Gearing4

Spindle pitch

5 mm/rev

Total turns on potentiometer

14.5 turns*maximum stroke

280 mmE2 (signal) F6 (potentiometer)
1

GND (common EOS*)

2

VCC

3

M+ (Motor/Power)

4

Potentiometer feedback

5

EOS* IN/OUT

6

M- (Motor/Power)* EOS equal to end of stroke
Feedback specification LINAK A/S system
Linearity (±2% of *maximum stroke)±5.8 mm

Precision (±5% of *maximum stroke)±14,5 mmCalculation of maximum stroke length
Gearing4

Spindle pitch

5 mm/rev

Total turns on potentiometer

14.5 turns*maximum stroke

280 mmLinear Actuators | 98

LA42
The LA42 is a strong and flexible actuator with a push load of up to
7,000 N and a dynamic load pull of 3,500 N, offering stable and reliable
performance. The motor housing offers the ability to customise the motor
direction, allowing designers more options for placement in applications.

Usage
Operation temperature:+5 °C to +40 °C

Storage temperature:-10 °C to +50 °C

Compatibility:

Compatible with LINAK control boxes with Power Communication Port
(PCP 2.0 only)

Relative humidity:

20% to 80% – non-condensing

Atmospheric pressure:

700 to 1060 hPa

Height above sea level:

Max. 3000 meters

Duty cycle:

10%, 2 minutes continuous use, followed by 18 minutes not in use

Flammability rating:

UL94V-0

Approvals: (pending)

IEC60601-1
ANSI/AAMI ES60601-1
CAN/CSA-22.2 No 60601-1

Warnings• If the actuator does not work as intended, there is a risk of injury. Therefore, the actuator must
immediately be sent to the nearest authorised LINAK workshop for service.
• The actuator is not designed for repeated dynamic push-to-pull movement.

Recommendations• The actuator must not be subjected to side load as this can cause bending/collapse of the actuator. The
actuator must never be used as a handle.
• The actuator must not be subjected to off-centre loading as this can cause bending/collapse of theactuator.
• Do not turn the piston rod eye due to virtual initialisation of the stroke length. There is a risk of position
lost. Reinitialisation is required.
• Only use the actuator within the specification.

Linear Actuators | 99

LA44
The LA44 is available in powerful 10,000 N and 12,000 N versions,ensuring safe patient handling.
With the LA44 actuator, LINAK offers a product, which with its wide rangeof safety options, low noise level, and outstanding performance is the rightchoice for medical applications such as patient lifts, beds, dental chairs etc.

Usage
Electrical spline
functionality:

Electrical spline; can be combined with manual lowering. The Electricalspline switch is mounted inside LA44. It activates on a pulling movementof the slightly moveable back fixture.
When using the actuator in a vertical position, the force needed toactivate the electric spline is maximum 100N + the weight of theapplication. To reengage the spline function, a force of maximum 100N is
needed.

Mechanical spline
functionality:

When using the actuator in a vertical position, the force needed toactivate the mechanical spline is maximum 60 N + the weight of theapplication. To reengage the spline function, a force of maximum 60 N isneeded.

Duty cycle:

10%, 2 minutes continuous use followed by 18 minutes not in use

Usage temperature:

5 ºC to 40 ºC

Storage temperature::-10 ºC to +50 ºC

Compatibility:

Compatible with LINAK control boxes. Please contact LINAK.

Approvals:

IEC 60601-1
ANSI/AAMI ES60601-1
CAN/CSA 22.2 No 60601-1

Linear Actuators | 100

Recommendations• The actuator is not suitable for outdoor applications• Power supply without current cut-off can cause serious damage to the actuator if a mechanical stop is
encountered or the actuator movement is blocked in another way.
• If there is a risk of “pull forces” in the application, the actuator must be equipped with mechanical orelectrical spline to avoid damage in pull.
• If the actuator is operated without load (e.g. loose on a table) the electrical spline can activate and theactuator cannot run in an inwards direction. Push the back fixture and the actuator can be operated
again.
• Connection bolts must be dimensioned so that they have the necessary strength in order to obtain theminimum safety factor according to the requirements of the authorities.
• The actuator must not be subject to a side load, as this can cause bending. It is also for this reason thatthe actuator should not be used as a handle, e.g pulling a patient hoist sideways.
• The actuator must not be subject to off centre loading, as this can damage the actuator.
• The actuator must not be subject to impact, or any form of stress to the casing.
• The actuator must not be subject to overload, as this can reduce the lifetime of the actutor and in theworst case cause damage to the actuator.
• The actuator must not be used in pull applications, as this can cause collapse.
• Only use the actuator within the specified working limits.
• It is recommended that the actuator is serviced according to the relevant national norms for theapplications in which the actuator is used.
• Connection bolts and brackets are to be inspected in connection with service, and must be replaced if
there are signs of wear.
• The safety function: Electrical Spline, should be checked in connection with service. The function ischecked by applying a straight pull, of max. 100 N, to the back fixture. The actuator must not be able torun in an inward direction. Hereafter press the back fixture against the housing and the actuator can run
in an inward direction.
• The actuator should be cleaned regularly, in order to maintain a good hygiene.

LA44 actuators for patient hoists are marked with a label to ensure the user is awarethat it is not permitted to handle the patient hoist by pulling the actuator or otherwise
expose it to side forces.

Self-locking ability
LINAK control boxes are designed so that they will short-circuit the motor terminals (poles) of the actuator(s),when the actuator(s) are not running. This solution gives the actuator(s) a higher self-locking ability. If theactuator(s) are not connected to a LINAK control box, the terminals of the motor must be short-circuited toachieve the self-locking ability of the actuator.

Linear Actuators | 101

Manual lowering
The following pictures illustratea) The manual lowering procedure andb) How to fit and remove the plug connection using the “Smart cable lock”

In case of a power failure it is possible to mechanicallylower a patient placed in a patient hoist.
When turning the manual lowering handle clockwise theactuator can be moved fully inwards.
NOTE:
It can be observed that the manual lowering unit can rotate
up to 1.5 revolutions while running the actuator outwards.

Fitting the plug / smart cable lock
Step 1:
The three flanges in this position indicate that the “smart cablelocking” device is in the unlocked position.

Step 2:
Position and press the cable plug into the socket.

Step 3:
Hold around the lock flanges and turn the lock either clockwiseor anticlockwise.
The cable is fully locked when turned 90°.

Turn
90°

Linear Actuators | 102

Feedback specifications - Potentiometer
Item

Specification

Comment

Description

The actuator can be equipped with apotentiometer for precise positioning. The
potentiometer is a variable resistance, themagnitude of which varies linearly with theposition of the actuator rod.

Type

ALPS RDC40, 0-10 kOhm ±30%, linearity ±1%

Input voltage

3.3 V recommended

Pin configuration

LA44 Mini-fit plug cable (potentiometer)
Potentiometer

Combinations

Pin1

Pot GND

Pin2

Vbus

Pin3

M+ (Motor/Power)

Pin4

Pot Position

Pin5

Pot + (3V3)

Pin6

M- (Motor/Power)

The potentiometer positioning cannot be
combined with LA44IC.

Feedback specifications - Hall
Item

Specification

Comment

Description

The actuator can be equippedwith Dual Hall that gives a relative positioning
feedback signal when the actuator moves.

Input voltage

4-15V

Current

Maximum 20 mA.
See diagram.

Pin configuration

LA44 Mini-Fit plug cable (hall) with feedback

The feedback circuit has to be powered 50 ms
before driving and until the actuator has stopped
movingHall
Pin1

Hall GND

Pin2

Vbus

Pin3

M+ (Motor/Power)

Pin4Hall A

Pin5

Hall B

Pin6

M- (Motor/Power)

PCBA header top viewLinear Actuators | 103

Unlocking the plug/smart cable lock
Flanges in locked position
Press herewith tool

Turn to open

No tapon thisside

Using a tool, release the lock (must be from the sideshown) by pushing the tap (through the small slot in
the side of the lock).
At the same time, turn the lock 90º in either
direction to release the plug connection.

Contacts
FACTORIES
Denmark - Headquarters
LINAK A/S
Phone:+45 73 15 15 15
Fax:+45 74 45 80 48
Fax (Sales): +45 73 15 16 13
Web:
www.linak.com

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Phone:+86 755 8610 6990
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the same reason, LINAK cannot guarantee the correctness and actual status of imprinted information on
its products.

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guarantee availability of any particular product at any given time. LINAK reserves the right to discontinue
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LINAK and the LINAK logotype are registered trademarks of LINAK A/S. All rights reserved.

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