EA01413C/07/EN/01.22-00
71575426
2022-02-21

ProductsSolutions

Services

Installation Instructions
Kit 2DS Ex-i module forCM44x(R) / CM44P
Replacement / repair of the 2DS Ex-i module forCM44x(R) / CM44P

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1

Overview of spare part set

Order number

Original spare part kit

71477718

Kit 2DS Ex-i module

2

Intended use

The 2DS Ex-i module kit is only suitable for the replacement of an identical 2DS Ex-i module
for the purpose of repairing the CM44x(R).
Use for any purpose other than that described poses a threat to the safety of people and of theentire measuring system, and is therefore not permitted.
The manufacturer is not liable for damage caused by improper or non-intended use.

3

Authorized installation personnel• Installation, commissioning, operation and maintenance of the measuring system may only
be carried out by qualified technical personnel specially trained for the task.
• The technical personnel must be authorized by the plant operator to carry out the specifiedactivities.
• The electrical connection may only be performed by an electrical technician.
• The technical personnel must have read and understood the Operating Instructions andmust follow the instructions contained therein.
• Faults at the measuring point may only be rectified by authorized and specially trained
personnel.
Repairs not described in the Operating Instructions provided must only be carried out
directly at the manufacturer's site or by the service organization.

4

Safety instructions

The following safety instructions must be observed. The Operating Instructions for the device
must be followed.

4.1

Workplace safety

As the user, you are responsible for complying with the following safety conditions:• Installation specifications• Local standards and regulations

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4.2

Operational safety

Before commissioning the entire measuring point:
1.

Verify that all connections are correct.

2.

Ensure that electrical cables and hose connections are undamaged.

3.

Do not operate damaged products, and protect them against unintentional operation.

4.

Label damaged products as defective.

During operation:
1.

If faults cannot be rectified:
Products must be taken out of service and protected against unintentional operation.

2.

The display cover must be kept closed outside of service and maintenance tasks.

4.3

Product safety

The product is designed to meet state-of-the-art safety requirements, has been tested, andleft the factory in a condition in which it is safe to operate. The relevant regulations andinternational standards have been observed.

5Symbols

5.1

Warnings

Structure of information

Meaning

LDANGERThis symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation will result in a fatal or serious injury.

Causes (/consequences)If necessary, Consequences of noncompliance (if applicable)‣ Corrective action

LWARNING
Causes (/consequences)If necessary, Consequences of noncompliance (if applicable)‣ Corrective action

Endress+HauserThis symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation can result in a fatal or serious injury.

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Structure of information

Meaning

LCAUTION

This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or more serious injuries.

Causes (/consequences)If necessary, Consequences of noncompliance (if applicable)‣ Corrective action
NOTICE

This symbol alerts you to situations which may result in damage to property.

Cause/situation
If necessary, Consequences of noncompliance (if applicable)‣ Action/note

5.2

Symbols used
Additional information, tips
Permitted or recommended
Not permitted or not recommended
Reference to device documentation
Reference to page
Reference to graphic

Result of a step

6

Scope of delivery

71477718 Kit 2 DS Ex-i module
Itema

Description

QuantityBase unit

2DS Ex-i module

1

Piece

Service kit instructions

1PieceA0050181

14Kit 2DS Ex-i module

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7Tools list

8

Replacement of modules (using the example of CM448
with the sensor communication module type 2DS Ex-i)
1

239101145867A0045639

2

Example of a field device with sensor communication module type 2DS Ex-i and open display cover(without wiring)1

Display cable

7

Cable mounting rail

2

Base module8

Threaded bolt for protective ground connection

3

Extension modules (optional)

9

Extension power unit

4

Separator element (pre-installed)

10

Distributor terminals for user-defined use 1)

5Sensor communication modules 2DS Ex-i

11

Storage slot for SD card

6Shock protection, dummy cover and end cover1)

Example: you want to loop the signal from the alarm relay to a siren and a lamp. The terminals on the alarm
relay only accommodate one cable. Route the signal from the alarm relay to a terminal on the distributor block.
The block's terminals are all interconnected. You therefore have 3 additional terminals on this block from where
you can carry the signal forward to the consumer (siren, lamp etc.). The signal can be multiplied in this way.

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8.1

Wiring

LWARNING
The device is live.
Incorrect connection may result in injury or death.
‣ Prior to commencing the work, make sure no voltage is applied at any of the cables. The
electrical connection may only be established by a certified electrical technician. Technicalpersonnel must have read and understood the instructions in this manual and must adhere
to them.
LWARNING
Module is not covered.
No shock protection. Risk of electric shock!
‣ If not all slots are occupied, always insert a dummy cover or end cover in a free slot. This
protects the device from impact.

8.2

Opening the housing

NOTICEPointed or sharp tools
If unsuitable tools are used, they can scratch the housing or damage the seal, and thus have anegative impact on the leak-tightness of the housing.
‣ Do not use any sharp or pointed objects, such as a knife, to open the housing.
‣ Only use a suitable Phillips screwdriver.
Liquiline CM44x:

2.

3.

4.

1.

≤180°
3

8.3

Releasing housing screws in a diagonally4
opposite sequence with Phillips screwdriver

Opening display cover, max. opening angle
180˚ (depends on installation position)

Disconnecting the plug-in terminals / cables

Disconnect the plug-in terminals from all modules that are to be replaced. If the plug-in
terminal is faulty, disconnect the cables from the plug-in terminals and replace the plug-interminal.

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8.3.1

Disconnecting the plug-in terminal with the cable

If the plug-in terminal is intact:‣ Disconnect the cable with the plug-in terminal in order to avoid rewiring.
1

2DS
Ex-i

A0049054

8.3.2

Disconnecting the cable from the plug-in terminal

If the plug-in terminal is faulty:
1.

Press the screwdriver against the clip (opens the terminal).

2.

Remove the cable.

3.

Remove the screwdriver (closes the terminal).

2.

1.

2.

1.

3.

3.
A0049042

5

Plug-in terminals for Memosens andProfibus / RS485 connections

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A0049032

6

All other plug-in terminals

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8.4

Replacement of the modules

8.4.1

Replacement of modules not connected to the separator element

1

1.
2.

1.
A0049034‣ Replace the module you have removed with a new replacement part.
1A0049044‣ Snap the locking elements fully into their starting positions.
All modules marked blue can be replaced by unplugging the old module and plugging inthe new one.

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98 97 88 87

98 97 88 87

98 97 88 87

98 97 88 87

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A0049035

798 97 88 87

98 97 88 87
98 97 88 87

Replacement of the modules connected to the separator element

98 97 88 87

8.5

Modules that can be replaced by unplugging/plugging.

A0049036

8

Modules located to the left and right of the separator element.

8.5.1

Replacement of the module to the left of the separator element

1.

Remove the module on the left of the separator element together with the separatorelement.

2.

Disconnect the separator element from the left module.

3.

Replace the module you have removed with a new replacement part.

4.

Reuse the separator element.

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5.

Slide the separator element onto the new replacement part.

1→

2→

3

1.
2.

1.
A0049037

A0049127

1.

Replace the module you have removed with a new replacement part.

2.

Position the module cover between the contour of the separator element.

3.

Position the catches between the spacers of the module cover.

1→

2

A0049210

10A0049128

A0049206

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EA01413C‣ Snap the locking elements fully into their starting positions.
1A0049047

8.5.2

Replacement of the module to the right of the separator element‣ Remove the module on the left of the separator element together with the separator
element.

1

1.
2.

1.
A0049037

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EA01413C‣ Remove the module on the right of the separator element.
1

1.
2.

1.
A0049043

1.

Replace the module you have removed with a new replacement part.

2.

Install the module on the left of the separator element together with the separator
element.

3.

Snap the locking elements fully into their starting positions.

1→2

A0049045

A0049047

8.6
Replacement of the modules when replacing the backplane‣ To replace the backplane, all the modules, covers and the separator element must beremoved, as described in Section 8.3, 8.4 and 8.5.→  5

Follow the kit instructions for the backplane replacement.

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EA01413C‣ After replacing the backplane, the modules, covers and the separator element must beinstalled again in the same order they were in before being removed.

In the case of field devices, the order is also indicated on the inside of the cover.
8.6.1

Position of the module and separator element

The base module and fieldbus module (if present) have fixed slots:• The base module (which is always present) always occupies slots 0 and 1• Fieldbus module 485: if the module is fitted it always occupies slot 2
Assign all of the other modules in the following order to slots 2 (if there is no fieldbusmodule) or 3 to 7:• Photometer module PEM (only for CM44P)• Spectrometer module SEM (only for CM44P)• Memosens input modules 2DS (DS = digital sensor)• Digital inputs and outputs DIO (DIO = digital input output)• Current input modules 2AI (AI = analog input)• Current output modules 4AO or 2AO (AO = analog output)• Relay modules AOR, 4R or 2R (AOR = analog output + relay, R = relay)
2DS Ex-i modules:• 2DS Ex-i modules are positioned starting from the right. Exception CM442: insert the 2DS
Ex-i module in slot 2.
• Insert a dummy cover in any slots that are empty.
Separator element:
Only 2 positions are possible:• CM442: separator element beside the base module• CM444 / CM448 / CM44P: separator element between slot 4 and slot 5

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8.7

Connecting the plug-in terminals / cables

8.7.1

Inserting in the plug-in terminal with the cable‣ Plug the plug-in terminals back in at the same position they were before they wereremoved.

1

2DS
Ex-iA0049055

8.7.2

Inserting the cable into the plug-in terminal

1.

Press the screwdriver against the clip (opens the terminal).

2.

Insert the cable until the limit stop.

3.

Remove the screwdriver (closes the terminal).

1.

2.

1.

2.

3.
3.
A0049052

9

Plug-in terminals for Memosens andProfibus / RS485 connections

A0049053

 10All other plug-in terminals

After connection, make sure that every cable end is securely in place. Terminated cableends, in particular, tend to come loose easily if they have not been correctly inserted as
far as the limit stop.

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8.7.3

Connecting the sensor communication module, type 2DS Ex-i

98i97i88i87i

BNWH
GNYE

98i97i88i87i

2DS
Ex-i

BNWH
GNYESensorSensorA0045659

 11Sensors without additional supply voltage connected to sensor communication module type 2DS
Ex-iOnly special Ex cables with a red marking may be connected to the sensor
communication module.
ATEX
xYK10 and xYK20 1) according to BVS 04 ATEX E121X
IECEx
xYK10 and xYK20 1) according to IECEx BVS 11.0052X
NOTICE
Intrinsically safe digital sensors may only be connected to the sensor inputs of the sensor
communication module 2DS Ex-i.
Non-intrinsically safe sensors may not be operated at a transmitter with a 2DS Ex-i card.
‣ The corresponding 2DS Ex-i terminals on the 2DS Ex-i module are disabled.
NOTICEThe cable shields of the intrinsically safe sensor must be connected to ground potential
at the terminal strip of the transmitter.
‣ The cable shield may only be connected once to the potential equalization system.
Intrinsically safe and non-intrinsically safe wiring of cables and connections must be
established according to the separation requirements of IEC/EN 60079-14.

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Field housing
Sample cable (does not necessarily correspond to the original cable supplied)

1

234

 12

Outer shield (exposed)
Cable cores with ferrules
Cable sheath (insulation)

4

Connect the cable to thegrounding clamp

Grounding clamp

Press the cable into thegrounding clamp

The cable shield is grounded using thegrounding clamp 1)

A0049146

Example: Intrinsically safe wiring forCM442

98 97 88 87

98 97 88 87

Observe the instructions in the "Ensuring the degree of protection" section 1516

 1498 97 88 871)

A0045764

A0045763

 1398 97 88 8712
3

Terminated cable

A0049149

 16

Example: Intrinsically safe wiring for
CM448 (also applies for CM44P)

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Cabinet device

GN/YE

You must always connect the terminal strip with PE from the central node in the cabinet.
Use the conductor with cable clamp that is included with the Memosens cable to connect thefunctional earth to the terminal strip of the device.

 17

Functional earth connection

You must only ever connect one functional earth to each screw in the terminal strip.
Otherwise, shielding is not guaranteed.

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A0049142

 18

Terminal strip for intrinsically safe wiring, CM442 R

 19

Terminal strip for intrinsically safe wiring, CM448 R

A0049150

9Disposal‣ Observe the local regulations.

If required by the Directive 2012/19/EU on waste electrical and electronic equipment(WEEE), the product is marked with the depicted symbol in order to minimize the disposalof WEEE as unsorted municipal waste. Do not dispose of products bearing this marking as
unsorted municipal waste. Instead, return them to the manufacturer for disposal under theapplicable conditions.

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