Endress+Hauser Liquiline CM442 User manual

Products Solutions Services
Operating Instructions
Liquiline CM442/CM444/CM448
Universal four-wire multichannel controller
Field device
BA00444C/07/EN/29.22-00
71576748
2022-06-30
Valid as of version
01.12.01

Liquiline CM442/CM444/CM448 Table of contents
Endress+Hauser 3
Table of contents
1 About this document ................ 5
1.1 Warnings ............................ 5
1.2 Symbols .............................. 5
1.3 Symbols on the device ................... 5
1.4 Documentation ........................ 6
2 Basic safety instructions ............ 7
2.1 Requirements for the personnel ............ 7
2.2 Intended use .......................... 7
2.3 Workplace safety ....................... 8
2.4 Operational safety ...................... 8
2.5 Product safety ......................... 8
3 Device description .................. 9
3.1 Housing closed ........................ 9
3.2 Standard device ........................ 9
3.3 Open device with sensor communication
module type 2DS Ex-i .................. 10
3.4 Slot and port assignment ................ 11
3.5 Terminal diagram ..................... 12
4 Incoming acceptance and product
identification ..................... 13
4.1 Incoming acceptance ................... 13
4.2 Product identification ................... 13
4.3 Scope of delivery ...................... 14
4.4 Certificates and approvals ............... 14
5 Mounting ......................... 16
5.1 Mounting requirements ................. 16
5.2 Mounting the measuring device ........... 17
5.3 Post-mounting check ................... 20
6 Electrical connection .............. 21
6.1 Connection conditions .................. 21
6.2 Connecting the measuring device .......... 21
6.3 Connecting the sensors ................. 28
6.4 Connecting additional inputs, outputs or
relays .............................. 31
6.5 Connecting PROFIBUS DP or Modbus RS 485 .35
6.6 Hardware settings ..................... 38
6.7 Ensuring the degree of protection .......... 39
6.8 Post-connection check .................. 40
7 System integration ................ 41
7.1 Web server .......................... 41
7.2 Service interface ...................... 43
7.3 Fieldbus systems ...................... 44
8 Operation options ................. 45
8.1 Overview ............................ 45
8.2 Access to operating menu via local display ... 46
8.3 Configuration options .................. 47
9 Commissioning .................... 49
9.1 Function check ....................... 49
9.2 Switching on ......................... 49
9.3 User definable screens ................. 50
9.4 Basic setup .......................... 51
10 Operation ......................... 52
10.1 Display ............................. 52
10.2 General settings ....................... 54
10.3 Current inputs ........................ 68
10.4 Outputs ............................. 68
10.5 Binary inputs and outputs ............... 78
10.6 Additional functions ................... 83
11 Calibration ...................... 113
12 Diagnostics and troubleshooting .. 114
12.1 General troubleshooting ................ 114
12.2 Diagnostic information on local display ..... 115
12.3 Diagnostic information via web browser .... 115
12.4 Diagnostic information via fieldbus ........ 115
12.5 Adapting the diagnostic information ...... 115
12.6 Overview of diagnostic information ....... 117
12.7 Pending diagnostic messages ............ 121
12.8 Diagnostics list ...................... 121
12.9 Event logbook ....................... 122
12.10 Simulation ......................... 124
12.11 Device test .......................... 126
12.12 Resetting the measuring device .......... 127
12.13 Device information ................... 127
12.14 Firmware history ..................... 130
13 Maintenance .................... 134
13.1 Cleaning ........................... 134
14 Repair ........................... 136
14.1 Spare parts ......................... 136
14.2 Return ............................. 139
14.3 Disposal ........................... 139
15 Accessories ...................... 140
15.1 Device-specific accessories .............. 140
15.2 Communication-specific accessories ....... 146
15.3 Service-specific accessories .............. 146
15.4 System components ................... 148
15.5 Other accessories ..................... 149

Table of contents Liquiline CM442/CM444/CM448
4 Endress+Hauser
16 Technical data ................... 150
16.1 Input .............................. 150
16.2 Digital inputs, passive ................. 151
16.3 Current input, passive ................. 151
16.4 Output ............................ 152
16.5 Digital outputs, passive ................ 153
16.6 Current outputs, active ................. 154
16.7 Relay outputs ........................ 154
16.8 Protocol-specific data .................. 155
16.9 Power supply ........................ 158
16.10 Performance characteristics ............. 160
16.11 Environment ........................ 161
16.12 Mechanical construction ............... 163
17 Installation and operation in
hazardous environment Class I Div.
2................................ 165
Index ................................. 166

Liquiline CM442/CM444/CM448 About this document
Endress+Hauser 5
1 About this document
1.1 Warnings
Structure of information Meaning
LDANGER
Causes (/consequences)
If necessary, Consequences of
non-compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation will result in a fatal or serious
injury.
LWARNING
Causes (/consequences)
If necessary, Consequences of
non-compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation can result in a fatal or serious
injury.
LCAUTION
Causes (/consequences)
If necessary, Consequences of
non-compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or more serious injuries.
NOTICE
Cause/situation
If necessary, Consequences of
non-compliance (if applicable)
‣Action/note
This symbol alerts you to situations which may result in damage to
property.
1.2 Symbols
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
1.3 Symbols on the device
Symbol Meaning
Reference to device documentation
Do not dispose of products bearing this marking as unsorted municipal
waste. Instead, return them to the manufacturer for disposal under the
applicable conditions.

About this document Liquiline CM442/CM444/CM448
6 Endress+Hauser
1.4 Documentation
The following manuals complement these Operating Instructions and are available on the
product pages on the Internet:
• Brief Operating Instructions for Liquiline CM44x, KA01159C
• Operating Instructions for Memosens, BA01245C
• Software description for Memosens inputs
• Calibration of Memosens sensors
• Sensor-specific diagnostics and troubleshooting
• Operating Instructions for HART communication, BA00486C
• Onsite settings and installation instructions for HART
• Description of HART driver
• Guidelines for communication via fieldbus and web server
• HART, SD01187C
• PROFIBUS, SD01188C
• Modbus, SD01189C
• Web server, SD01190C
• EtherNet/IP, SD01293C
• PROFINET, SD02490C

Liquiline CM442/CM444/CM448 Basic safety instructions
Endress+Hauser 7
2 Basic safety instructions
2.1 Requirements for the personnel
• Installation, commissioning, operation and maintenance of the measuring system may
be carried out only by specially trained technical personnel.
• The technical personnel must be authorized by the plant operator to carry out the
specified activities.
• The electrical connection may be performed only by an electrical technician.
• The technical personnel must have read and understood these Operating Instructions
and must 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 be carried out only
directly at the manufacturer's site or by the service organization.
2.2 Intended use
2.2.1 Non-hazardous atmosphere
Liquiline CM44x is a multichannel controller for connecting digital sensors with
Memosens technology in non-hazardous environments.
The device is designed for use in the following applications:
• Water and wastewater
• Power stations
• Chemical industry
• Other industrial applications
2.2.2 Hazardous environment in accordance with cCSAus Class I Div.
2
‣Please pay attention to the control drawing and specified operating conditions in the
appendix of this manual and follow the instructions.
2.2.3 Transmitter in non-hazardous environment with sensor
communication module 2DS Ex i for sensors in hazardous
environments
The installation conditions in these Operating Instructions and the corresponding XA must
be observed.
• ATEX & IECEx: XA02419C
• CSA: XA02420C
2.2.4 Non-intended use
Use of the device for any purpose other than that described, poses a threat to the safety of
people and of the entire measuring system and is therefore not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.

Basic safety instructions Liquiline CM442/CM444/CM448
8 Endress+Hauser
2.3 Workplace safety
As the user, you are responsible for complying with the following safety conditions:
• Installation guidelines
• Local standards and regulations
• Regulations for explosion protection
Electromagnetic compatibility
• The product has been tested for electromagnetic compatibility in accordance with the
applicable international standards for industrial applications.
• The electromagnetic compatibility indicated applies only to a product that has been
connected in accordance with these Operating Instructions.
2.4 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:
‣If faults cannot be rectified:
products must be taken out of service and protected against unintentional operation.
LCAUTION
Programs not switched off during maintenance activities.
Risk of injury due to medium or cleaning agent!
‣Quit any programs that are active.
‣Switch to the service mode.
‣If testing the cleaning function while cleaning is in progress, wear protective clothing,
goggles and gloves or take other suitable measures to protect yourself.
2.5 Product safety
2.5.1 State-of-the-art technology
The product is designed to meet state-of-the-art safety requirements, has been tested, and
left the factory in a condition in which it is safe to operate. The relevant regulations and
international standards have been observed.
2.5.2 IT security
We only provide a warranty if the device is installed and used as described in the
Operating Instructions. The device is equipped with security mechanisms to protect it
against any inadvertent changes to the device settings.
IT security measures in line with operators' security standards and designed to provide
additional protection for the device and device data transfer must be implemented by the
operators themselves.

Liquiline CM442/CM444/CM448 Device description
Endress+Hauser 9
3 Device description
3.1 Housing closed
1 2
3
4
5
6
A0025813
 1 Mounted on a post
1 Display
2 Weather protection cover (optional)
3 Navigator
4 Sensor cable or current output cable
5 Power supply cable
6 Soft keys, assignment depends on menu
3.2 Standard device
3.2.1 Housing open
1 2 3
6
78
10
11
5
4
9
A0039719
 2 Example of a four-channel device with an open display cover (without wiring)
1 Display cable 7 Threaded bolt for protective ground connection
2 Basic module 8 Extension power unit with internal cable
3 Extension modules (optional) 9 M12 connectors for sensor connection
(optional)
4 Shock protection, dummy cover and end cover 10 Distributor terminals for user-defined use 1)
5 Extension backplane 11 Storage slot for SD card
6 Cable mounting rail
1) 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.

Device description Liquiline CM442/CM444/CM448
10 Endress+Hauser
3.3 Open device with sensor communication module type
2DS Ex-i
1 2 3 5
7
89
10
11
6
4
A0045639
 3 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 Basic module 8 Threaded bolt for protective ground connection
3 Extension modules (optional) 9 Extension power unit
4 Disconnection element (pre-installed) 10 Distributor terminals for user-defined use 1)
5 Sensor communication modules 2DS Ex-i 11 Storage slot for SD card
6 Shock protection, dummy cover and end cover
1) 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.

Liquiline CM442/CM444/CM448 Device description
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3.4 Slot and port assignment
BASE2-E
Slots
1
2
1
2
1
2
1
2
Ports
2DS 2DS 2DS 2AI 2AO 4R
1
2
Sensor 1 Sensor 1 Sensor 1
Sensor 2 Sensor 2 Sensor 2
1
2
1
2
1
2
1
2
3
4
 4 Slot and port assignment of the hardware modules
 5 Slot and port assignment on the
display
• Inputs are assigned to measuring channels in the
ascending order of the slots and ports.
Adjacent example:
"CH1: 1:1 pH glass" means:
Channel 1 (CH1) is slot 1 (basic module) : Port 1 (input
1), pH glass sensor
• Outputs and relays are named according to their
function, e.g. "current output", and are displayed in
ascending order with the slot and port numbers

Device description Liquiline CM442/CM444/CM448
12 Endress+Hauser
3.5 Terminal diagram
The unique terminal name is derived from:
Slot no. : Port no. : Terminal
Example, NO contact of a relay
Device with 4 inputs for digital sensors, 4 current outputs and 4 relays
• Base module BASE2-E (contains 2 sensor inputs, 2 current outputs)
• 2DS module (2 sensor inputs)
• 2AO module (2 current outputs)
• 4R module (4 relays)
1 2 34
43 42 41
Relay 1
Relay 2
Relay 3
Relay 4
Slot
Slot 4 Port 1 Pin 41
BASE2-E 2DS 4R 2AO
43 42 41 43 42 41
43 42 41
43 42 41
A0039621
 6 Creating a terminal diagram using the example of the NO contact (terminal 41) of a relay

Liquiline CM442/CM444/CM448 Incoming acceptance and product identification
Endress+Hauser 13
4 Incoming acceptance and product
identification
4.1 Incoming acceptance
1. Verify that the packaging is undamaged.
 Notify the supplier of any damage to the packaging.
Keep the damaged packaging until the issue has been resolved.
2. Verify that the contents are undamaged.
 Notify the supplier of any damage to the delivery contents.
Keep the damaged goods until the issue has been resolved.
3. Check that the delivery is complete and nothing is missing.
 Compare the shipping documents with your order.
4. Pack the product for storage and transportation in such a way that it is protected
against impact and moisture.
 The original packaging offers the best protection.
Make sure to comply with the permitted ambient conditions.
If you have any questions, please contact your supplier or your local Sales Center.
4.2 Product identification
4.2.1 Nameplate
The nameplate provides you with the following information on your device:
• Manufacturer identification
• Order code
• Extended order code
• Serial number
• Firmware version
• Ambient and process conditions
• Input and output values
• Activation codes
• Safety information and warnings
• Ex labeling on hazardous area versions
‣Compare the information on the nameplate with the order.
4.2.2 Product identification
Product page
www.endress.com/cm442
www.endress.com/cm444
www.endress.com/cm448
Interpreting the order code
The order code and serial number of your product can be found in the following locations:
• On the nameplate
• In the delivery papers

Incoming acceptance and product identification Liquiline CM442/CM444/CM448
14 Endress+Hauser
Obtaining information on the product
1. Go to www.endress.com.
2. Page search (magnifying glass symbol): Enter valid serial number.
3. Search (magnifying glass).
 The product structure is displayed in a popup window.
4. Click the product overview.
 A new window opens. Here you fill information pertaining to your device,
including the product documentation.
Manufacturer's address
Endress+Hauser Conducta GmbH+Co. KG
Dieselstraße 24
D-70839 Gerlingen
4.3 Scope of delivery
The scope of delivery comprises:
• 1 multichannel controller in the version ordered
• 1 mounting plate
• 1 wiring label (attached at the factory to the inside of the display cover)
• 1 printed copy of the Brief Operating Instructions in the language ordered
• Disconnection element (pre-installed on hazardous area version type 2DS Ex-i)
• Safety instructions for the hazardous area (for hazardous area version type 2DS Ex-i)
‣If you have any queries:
Please contact your supplier or local sales center.
4.4 Certificates and approvals
4.4.1  mark
The product meets the requirements of the harmonized European standards. As such, it
complies with the legal specifications of the EU directives. The manufacturer confirms
successful testing of the product by affixing to it the  mark.
4.4.2 EAC
The product has been certified according to guidelines TP TC 004/2011 and TP TC
020/2011 which apply in the European Economic Area (EEA). The EAC conformity mark
is affixed to the product.
4.4.3 cCSAus
The device has been certified with regard to its electrical safety and for Class I Div. 2
cCSAus explosion-proof environments. It meets the requirements in accordance with:
• CLASS 2252 06 - Process Control Equipment
• CLASS 2252 86 - Process Control Equipment - Certified to US Standards
• CLASS 2258 03 - Process Control Equipment - Intrinsically Safe and Non-incendive
Systems - For Hazardous Locations
• CLASS 2258 83 - Process Control Equipment - Intrinsically Safe and Non-incendive
Systems - For Hazardous Locations - Certified to US Standards
• FM3600
• FM3611
• FM3810

Liquiline CM442/CM444/CM448 Incoming acceptance and product identification
Endress+Hauser 15
• UL50E
• IEC 60529
• CAN/CSA-C22.2 No. 0
• CAN/CSA C22.2 No. 94
• CSA Std. C22.2 No. 213
• CAN/CSA-C22.2 No. 61010-1
• CAN/CSA-C22.2 No. 60529
• UL/ANSI/ISA 61010-1
• ANSI - ISA 12 12 01
4.4.4 MCERTS
CM442 only
The device has been assessed by Sira Certification Service and complies with "MCERTS
Performance Standards for Continuous Water Monitoring Equipment, Part 2: online
analysers, Version 3.1, dated August 2010"; Certificate No.: Sira MC140246/01.
4.4.5 Marine approvals
A selection of the devices and sensors have type approval for marine applications, issued
by the following classification societies: ABS (American Bureau of Shipping), BV (Bureau
Veritas), DNV-GL (Det Norske Veritas-Germanischer Lloyd) and LR (Lloyd’s Register).
Details of the order codes of the approved devices and sensors, and the installation and
ambient conditions, are provided in the relevant certificates for marine applications on the
product page on the Internet.
4.4.6 ATEX / IECEx approval
Version CM44x(R)-BM
• EN IEC 60079-0:2018
• EN IEC 60079-11:2012
XA02419C
Version CM44x(R)-IE
• EN IEC 60079-0:2017
• EN IEC 60079-11:2011
XA02419C

Mounting Liquiline CM442/CM444/CM448
16 Endress+Hauser
5 Mounting
5.1 Mounting requirements
5.1.1 Dimensions
H 5 6 7 8 I
GF
E
D
C
A
1 2 3 4 B
162 (6.38)
14 (0.55)
Ø4 (0.16)
Ø9 (0.35)
199 (7.38) 128 (5.04)
237 (9.33)
194 (7.64)
76 (2.99)
95 (3.74)
A0012396
 7 Dimensions of field housing in mm (in)
5.1.2 Mounting plate
80 (3.15)
190 (7.48)
3 (0.12)
4 x 6.5 (0.26)
170 (6.69)
125 (4.92)
A0012426
 8 Mounting plate. Engineering unit: mm (in)

Liquiline CM442/CM444/CM448 Mounting
Endress+Hauser 17
5.1.3 Weather protection cover
NOTICE
Effect of climatic conditions (rain, snow, direct sunlight etc.)
Impaired operation to complete transmitter failure are possible!
‣Always use the weather protection cover (accessory) when installing the device
outdoors.
320 (12.6)
270 (10.6)
300 (11.8)
80 (3.15)
170 (6.69)
170 (6.69)
80 (3.15)
8 x Ø 7 (0.28)
A0012428
 9 Dimensions in mm (in)
5.2 Mounting the measuring device
5.2.1 Post mounting
You require the post mounting kit (optional) to mount the unit on a pipe, post or
railing (square or circular, clamping range 20 to 61 mm (0.79 to 2.40")).
1234
56
7
8
A0033044
 10 Post mounting
1 Weather protection cover (optional) 5 Spring washers and nuts (post mounting kit)
2 Post mounting plate (post mounting kit) 6 Pipe or railing (circular/square)
3 Spring washers and nuts (post mounting kit) 7 Mounting plate
4 Pipe clamps (post mounting kit) 8 Threaded rods (post mounting kit)

Mounting Liquiline CM442/CM444/CM448
18 Endress+Hauser
A0033045
 11 Post mounting
A0025885
 12 Attach the device and click it into place
1. Place the device on the mounting plate.
2. Slide the device downwards in the guide on the mounting rail until it clicks into place.
5.2.2 Rail mounting
1 2 34
56
7
8
9
A0012668
 13 Rail mounting
1 Weather protection cover (optional) 6 Pipe or railing (circular/square)
2 Post mounting plate (post mounting kit) 7 Mounting plate
3 Spring washers and nuts (post mounting kit) 8 Threaded rods (post mounting kit)
4 Pipe clamps (post mounting kit) 9 Screws (post mounting kit)
5 Spring washers and nuts (post mounting kit)
A0025886
 14 Rail mounting
A0027803
 15 Attach the device and click it into place
1. Place the device on the mounting plate.
2. Slide the device downwards in the guide on the mounting rail until it clicks into place.

Liquiline CM442/CM444/CM448 Mounting
Endress+Hauser 19
5.2.3 Wall mounting
≥340 (13.4)
≥150 (5.91)
A0012686
 16 Installation clearance in mm (in)
1
3
4
2
A0027798
 17 Wall mounting
1 Wall
24 drill holes 1)
3 Mounting plate
4 Screws Ø 6 mm (not part of scope of supply)
1)The size of the drill holes depends on the wall plugs used. The wall plugs and screws must be provided by the
customer.
A0027799
 18 Wall mounting
A0027797
 19 Attach the device and click it into place
1. Place the device on the mounting plate.
2. Slide the device downwards in the guide on the mounting rail until it clicks into place.
5.2.4 Disassembly (for conversion, cleaning etc.)
NOTICE
The device can be damaged if dropped
‣When pushing the housing out of the holder, secure the housing to prevent it from
falling. If possible, ask a second person to help you.

Mounting Liquiline CM442/CM444/CM448
20 Endress+Hauser
A0025890
 20 Disassembling
A0025891
 21 Disassembling
1. Hold down the latch.
2. Push up the device to remove it from the holder.
3. Remove the device towards the front.
5.3 Post-mounting check
1. After installation, check the transmitter for damage.
2. Check whether the transmitter is protected against precipitation and direct sunlight
(e.g. by the weather protection cover).