Quality electrical movement for
dust explosive atmospheres
LINAK actuators

LINAK.COM/TECHLINE

IECEx and ATEX
Ex approvals

When can a dust explosion occur?

For dust-approved operation, equipment used in explosion protected(Ex) industries must be certified in accordance with the IECEx
international certification system or the EU directive 94/9/EC, also
called the ATEX directive. The IECEx and ATEX directives describe
safety requirements for applications and products in explosive
atmospheres and account for both mechanical and electrical sourcesof ignition in these areas.

Dust explosions require the presence of a combustible substance, oxygen and an ignition source. Both electrically andmechanically generated sparks, arcs and open flames areignition sources. Mechanically generated sparks are far the mostfrequent cause of dust explosions.

LINAK offers products that have been tested and certified forelectrical operation in dust explosive atmospheres by the notified
body TÜV Nord. Our actuators displayed in this folder have all beencertified according to both IECEx standards and the ATEX 2D and 3D
categories. This means that they can be used in Ex zones 21 and 22- see the illustration below.
Furthermore, the actuators have been approved for non-mining
applications, and for the temperature range of -25°C to +65°C.

Dust explosive atmospheres may occur in:• Power stations• Grain mills and grinders• Chemical factories• Paint factories• Cement plants• Animal feeding industries• Harbour installations• Woodworking machines• Ventilation systems• Other dusty areas

20 21 22

Category 1 equipment

2

Category 2 equipment

Category 3 equipment

Dust occurs continuously

Dust occurs occasionally

Dust occurs in short periods

Zone 20 is a place in which an explosive
atmosphere in the form of a cloud of combustible
dust in the air is present continuously, forlong periods or frequently. This would typically
include the inside of containers or pipelines andenclosed conveying equipment.

Zone 21 is a place in which an explosive
atmosphere in the form of a cloud ofcombustible dust in the air is likely to occur
in normal operation occasionally, for example
when discharging and filling equipment.

Zone 22 is a place in which an explosive
atmosphere in the form of a cloud of
combustible dust in the air is not likely to occur
in normal operation but – if it does occur – itwill persist for a short period only. Areas inwhich dust escapes from leaks and forms dust
deposits are included in this category.

IECEx and ATEX certified actuators
Actuator LA36 - reliable and tough
The actuator LA36 is one of the most solid and powerful LINAK
actuators, designed to operate under extreme conditions. The LA36
is a maintenance-free product with a long lifetime. This high-qualityactuator offers a very strong alternative to hydraulic solutions.

LA36 features:• Max thrust up to 10,000 N• Max speed up to 160 mm/sec• Standard stroke 100-999 mm• Voltage 12, 24 or 36 V DC
• Heavy-duty aluminum housing for harsh conditions• Integrated brake, high self-locking ability• Hand crank for manual operation• Non rotating piston rod eye• High-pressure cleaning resistant• Available with IC™:
- IC - Integrated Controller- Integrated Parallel Controller- LIN bus communication- Analogue or digital feedback for precise positioning- Endstop signals- PC configuration tool
• Available with IECEx and ATEX certifications3

IECEx and ATEX certified actuators
Actuator LA25 - toughand compact
With its robust design and aluminium
housing, the actuator LA25 is ideal forharsh environments where operation under
extreme conditions is required. Furthermore,
the compact dimensions of the LA25 make itapplicable for confined spaces.

LA25 features:• Max thrust up to 2,500 N• Max speed up to 13 mm/sec• Standard stroke 20-300 mm• Voltage 12 or 24 V DC
• Heavy-duty aluminium housing for harsh conditions• Built-in electrical endstop• High self-locking ability• Salt spray and chemical tested• Non rotating piston rod eye• Steel or stainless steel back fixture and piston rod eye• Exchangeable cables• Safety nut in push or pull
• Available with IC™:
- IC - Integrated Controller- Integrated Parallel Controller- LIN bus communication- Analogue or digital feedback for precise positioning- Endstop signals- PC configuration tool
• Available with IECEx and ATEX certifications

4Actuator LA14 - robust
and reliable
The actuator LA14 is a very tough actuatorwith an aluminium housing that makes
it ideal for use in harsh and demanding
environments.
The LA14 offers top quality in every detail andensures reliable performance. With its small
size the LA14 is well suited for applications
that require short linear movements.

LA14 features:• Max thrust up to 750 N• Max speed up to 45 mm/sec• Standard stroke 40-130 mm• Voltage 12 or 24 V DC
• Heavy-duty aluminium housing for harsh conditions• Stainless steel inner tube and piston rod eyes
• Built-in electrical endstop• Compact design• High self-locking ability• Salt spray and chemical tested• Exchangeable cables• Back fixture available in 2 different positions: 0° or 90°• Available with IC™:
- IC - Integrated Controller- Integrated Parallel Controller- LIN bus communication- Analogue or digital feedback for precise positioning- Endstop signals- PC configuration tool
• Available with IECEx and ATEX certifications5100% function tests
In each application, the actuator is just one component ofmany, but at TECHLINE® we fully appreciate that it is ofutmost importance to you and your customers. Not a single
actuator leaves LINAK until it has undergone a 100%
function test.
Depending on the actuator type, various tests have been
carried through. Please consult your local LINAK office ortake a look at the actuator data sheet in question to get athorough test overview.

Electrical tests:
All electrical parts are tested i.e. power supply, powerand signals cables, control signals etc. Electrical immunity is tested according to industrial standards i.e. forradio noise, electrical discharge and burst.*(*) These tests do not apply to third party products!

This is your guarantee that a solution based on LINAKTECHLINE electric actuator systems is a solution that will
work reliably for years and years.

Climatic tests:
In the climatic test the actuators are tested to operate inextreme temperatures as well as to endure rapid changes in temperature. In some tests, the actuator has towithstand going from a +100°C environment to -30°C
repeatedly and still maintain full functionality.

Mechanical tests:
Vibration: The actuator must withstand continuous
vibration in three directions.
Shock: The shock test puts the actuator through 3
shocks of up to 100 G in each of 6 directions.
Bump: The actuator receives bumps of up to 40 G ineach of six directions several hundred times.

6

EN/IEC 61000-6-4
EN/IEC 60204
EN 50121-3-2
94/25/EC
EN/ISO 13766
EN/IEC 61000-6-2
2004/104/EC
EN/ISO 14982
EN/ISO 13309- Generic standard emission industry- Electrical equipment of machinery- Railway applications - Rolling stock apparatus- Recreational crafts directive- Earth moving machinery- Generic standard immunity industry- Automotive Directive- Agricultural and forestry machines- Construction machinery

EN600068-2-1 (Ab)EN60068-2-2 (Bb)
EN60068-2-14
EN60068-2-30
EN60068-2-52
EN60529-IP66
BS7691/96 hours- Cold test
- Dry heat:- Change of temperature- Damp heat
- Salt spray- Degrees of protection- Chemicals

EN60068-2-36 (Fdb)
EN60068-2-29 (Eb)
EN60068-2-27 (Ea)

- Vibration- Bump- Shock7

For further information about our solution for grain handling:
LINAK.COM/BUSINESS-AREAS/FARMING/GRAIN-HANDLING/

LINAK® accepts no responsibility for possible errors or inaccuracies in catalogues, brochures, and other material. LINAK reserves the right to change its products without prior notice. LINAK cannot guarantee productavailability and reserves the right to discontinue the sale of any product. User is responsible for determining the suitability of LINAK products for a specific application. All sales are subject to the ‘Standard Terms of Sale andDelivery’, available on LINAK websites.
LINAK and the LINAK logotype are registered trademarks of LINAK A/S. All rights reserved.

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