Endress+Hauser Liquiline CM442 User manual

BA444C/07/EN/03.10
71099448
Valid as of:
Software version 01.00.00
Operating Instructions
Liquiline CM442
Universal four-wire multichannel controller
Commissioning

Overview of documentation
The Operating Instructions are split into several parts:
Commissioning (BA444C)
• All steps that you have to carry out once only during initial commissioning
• Descriptions of menus
– General settings
– Display/operation
• Technical data
Operation & configuration (BA450C)
• Individual input settings
– Sensor-specific settings
– Calibration settings
– Sensor-dependent diagnostics settings
• Configuration of optional outputs
– Current outputs
– Alarm relays
–Relays
• Additional functions
– Limit contactor
– Controller
– Cleaning programs
• Data administration
Calibration (BA451C)
• Calibration menus
• Examples
Maintenance & diagnostics (BA445C)
• Maintenance
• Troubleshooting and diagnostics
– Diagnostics menu
– Troubleshooting instructions (troubleshooting and fault elimination)
– Process-dependent errors
• Accessories and spare parts
Operating Instructions BA444C, BA445C, BA450C and BA451C in all the available
languages can be found on the CD-ROM enclosed.

Endress+Hauser
Liquiline CM442
Table of contents
1 Safety instructions . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Incoming acceptance, transport, storage . . . 4
1.3 Installation, commissioning and operation . 4
1.4 Operational safety . . . . . . . . . . . . . . . . . . . 5
1.5 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6 Notes on safety conventions and icons . . . . 5
2 Identification . . . . . . . . . . . . . . 7
2.1 Device designation . . . . . . . . . . . . . . . . . . . 7
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . 7
2.3 CE mark: Declaration of Conformity . . . . . 8
3 Device description . . . . . . . . . . 9
3.1 Housing closed . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Housing open . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Identification of inputs and outputs . . . . . 10
4 Installation . . . . . . . . . . . . . . . 11
4.1 Incoming acceptance, transport, storage . . 11
4.2 Installation conditions . . . . . . . . . . . . . . . 11
4.3 Installation instructions . . . . . . . . . . . . . . 14
4.4 Post-installation check . . . . . . . . . . . . . . . 17
5 Wiring . . . . . . . . . . . . . . . . . . 18
5.1 Opening the housing . . . . . . . . . . . . . . . . 18
5.2 Cable mounting rail . . . . . . . . . . . . . . . . . 18
5.3 Cable terminals . . . . . . . . . . . . . . . . . . . . 19
5.4 Supply voltage and outputs . . . . . . . . . . . . 20
5.5 Sensor connection . . . . . . . . . . . . . . . . . . 23
5.6 Post-connection check . . . . . . . . . . . . . . . 25
6 Operation . . . . . . . . . . . . . . . . 26
6.1 Display and operating elements . . . . . . . . 26
6.2 Operation concept . . . . . . . . . . . . . . . . . . 27
6.3 Configuration options . . . . . . . . . . . . . . . . 28
7 Commissioning. . . . . . . . . . . . 30
7.1 Function check . . . . . . . . . . . . . . . . . . . . 30
7.2 Switching on the unit . . . . . . . . . . . . . . . . 30
7.3 General settings . . . . . . . . . . . . . . . . . . . . 31
7.4 Measuring mode . . . . . . . . . . . . . . . . . . . 37
8 Technical data . . . . . . . . . . . . . 39
8.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.2 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.3 Current output, active . . . . . . . . . . . . . . . 40
8.4 Relay outputs . . . . . . . . . . . . . . . . . . . . . . 40
8.5 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.6 Performance characteristics . . . . . . . . . . . . 42
8.7 Environment . . . . . . . . . . . . . . . . . . . . . . 43
8.8 Mechanical construction . . . . . . . . . . . . . . 43
Index. . . . . . . . . . . . . . . . . . . . 45

Safety instructions Liquiline CM442
4Endress+Hauser
1 Safety instructions
1.1 Designated use
Liquiline CM442 is a two-channel transmitter for connecting digital sensors with Memosens
technology in non-hazardous locations.
The device is designed for use in the following applications:
• Water and wastewater
• Power stations
• Chemical industry
• Industrial wastewater treatment plants
If the device is used for any purpose other than that described, this poses a threat to the safety
of people and the entire measuring system and is thus not permitted.
The manufacturer does not accept liability for damage caused by improper or non-designated
use.
1.2 Incoming acceptance, transport, storage
• Make sure the packaging is not damaged!
Inform your supplier of any damage to the packaging.
Please keep the damaged packaging until any issues have been resolved.
• Make sure the contents are not damaged!
Inform your supplier of any damage to the contents.
Please keep the damaged goods until any issues have been resolved.
• Check the scope of delivery against the delivery papers and your order to ensure it is complete
and nothing is missing.
• Pack the product in such a way as to protect it reliably against impact and moisture for storage
and transportation. Optimum protection is provided by the original packaging materials. In
addition, the permitted ambient conditions must be observed (see Technical data).
• If you have any queries, please contact your supplier or local sales center.
1.3 Installation, commissioning and operation
Observe the following points:
• Installation, commissioning, operation and maintenance of the measuring system must only
be carried out by trained technical personnel.
The technical personnel must be authorized to perform the tasks by the owner-operator.
• The electrical connection may only be established by an electrical technician.
• The technical personnel must have read and understood these Operating Instructions and
must follow the instructions they contain.
• Prior to commissioning the entire measuring point, check that all connections are correct.
Make sure that electric cables and hose connections are not damaged.
• Do not commission damaged products. Protect them against unintentional startup. Label and
identify the damaged product as defective.

Liquiline CM442 Safety instructions
Endress+Hauser 5
• Faults at the measuring point may only be rectified by authorized and properly trained
personnel.
• If the faults cannot be eliminated, take the products out of service and protect them against
unintentional startup.
• Repairs not described in these Operating Instructions may only be carried out directly at the
manufacturer's or by the Service Organization.
1.4 Operational safety
As the user, you are responsible for observing the following safety regulations:
• Installation guidelines
• Local standards and regulations
Electromagnetic compatibility
With regard to electromagnetic compatibility, this device has been tested in accordance with the
applicable European standards for industrial applications.
The electromagnetic compatibility indicated only applies to a device that has been connected in
accordance with the instructions in these Operating Instructions.
1.5 Return
If returning the transmitter, please send it cleaned to your sales center.
Use the original packaging when returning the device.
1.6 Notes on safety conventions and icons
1.6.1 Warnings
#
Warning!
This symbol alerts you to dangers.
If the warning is not observed, this can result in serious injury to people or damage
to property.
"
Caution!
This symbol alerts you to possible malfunctions resulting from incorrect operation.
If not observed, this could result in damage to property.
!Note!
This symbol indicates important items of information.

Safety instructions Liquiline CM442
6Endress+Hauser
1.6.2 Document symbols
È ä 1 This symbol stands for a cross-reference to a certain page (e.g. Page 1).
È å 2 This symbol stands for a cross-reference to a certain graphic (e.g. Fig. 2).
Additional information, tips
Permitted or recommended
Forbidden or not recommended

Liquiline CM442 Identification
Endress+Hauser 7
2 Identification
2.1 Device designation
2.1.1 Nameplate
Nameplates can be found:
• On the outside of the housing
• On the packaging (adhesive label, portrait format)
• On the inside of the display cover
The nameplate provides you with the following information on your device:
•Ordercode
• Extended order code
• Serial number
• Firmware version
• Input, output values
• Protection class
• Environment
• Activation codes
• Safety notices, warnings
Compare the data on the nameplate with your order.
2.1.2 Serial number and order code
The order code and serial number of your device can be found in the following locations:
• On the nameplate
• On the front page of these Operating Instructions
• In the delivery papers
To find out what controller version you have, enter the order code indicated on the
nameplate in the search screen at the following address:
www.products.endress.com/order-ident
2.2 Scope of delivery
• 1 controller in the version ordered
• 1 mounting plate
• 1 wiring label (attached at the factory to the inside of the display cover)
• 1 CD with Operating Instructions
• 1 printed copy of the "Commissioning" section of the Operating Instructions in the language
ordered
If you have any queries, please contact your supplier or local sales center.

Identification Liquiline CM442
8Endress+Hauser
2.3 CE mark: Declaration of Conformity
With this declaration, the manufacturer guarantees that the product conforms to the regulations
of European Directive 2004/108/EC. This is proven by observing the standards listed in the
Declaration of Conformity.

Liquiline CM442 Device description
Endress+Hauser 9
3 Device description
3.1 Housing closed
3.2 Housing open
a0012681
Fig. 1: Liquiline mounted on a post
1
2
3
4
5
6
Display
Weather protection cover (optional)
Navigator
Sensor or current output cable
Power supply cable
Soft keys, assignment depends on menu
a0012444
Fig. 2: With open display cover (without wiring)
1
2
3
4
5
Storage slot for SD card
Basic module
Extension module (optional)
Shock protection, dummy cover and end cover
Connection area for subsequent extensions
6
7
8
9
10
Cable mounting rail
Dummy plug for cable gland borehole
M12 connectors for sensor connection (optional)
Threaded bolt for protective ground connection
Distribution terminals for L, N or switched signals
12
3
4
5
6

Device description Liquiline CM442
10 Endress+Hauser
3.3 Identification of inputs and outputs
The electronic configuration follows a modular concept:
• Several slots are available for electronics modules.
• These slots are numbered consecutively in the housing. Slot 1 is always reserved for the basic
module.
• Each electronics module has one or more inputs or outputs.
• The inputs and outputs are also numbered consecutively per electronics module.
• The software automatically detects what inputs and outputs are available.
Measured value display:
1. Channel number (English), e.g. "CH1:" for channel 1
2. Slot and input number, e.g. "1:1" for slot 1 (basic module) and the related input 1
3. Connected sensor type, e.g. "ORP"
4. Current measured value, e.g. 301 mV
The same logic is applied to number the outputs: name of the output, slot number and
output number, e.g. "current output 1:1".
a0013234
Fig. 3: Slot and input identification
A Slot numbering, in graphic: slot 1 with basic module
B Input numbering, in graphic: Memosens inputs 1 and 2 on basic module (slot 1)

Liquiline CM442 Installation
Endress+Hauser 11
4 Installation
4.1 Incoming acceptance, transport, storage
• Make sure the packaging is not damaged!
Inform your supplier of any damage to the packaging.
Please keep the damaged packaging until any issues have been resolved.
• Make sure the contents are not damaged!
Inform your supplier of any damage to the contents.
Please keep the damaged goods until any issues have been resolved.
• Check the scope of delivery against the delivery papers and your order to ensure it is complete
and nothing is missing.
• Pack the product in such a way as to protect it reliably against impact and moisture for storage
and transportation. Optimum protection is provided by the original packaging materials. In
addition, the permitted ambient conditions must be observed (see Technical data).
• If you have any queries, please contact your supplier or local sales center.
4.2 Installation conditions
4.2.1 Enclosed cable entries
"Caution!
Danger of impaired leak-tightness on housing versions whose cable glands are
enclosed, not ready-mounted
With some device versions, the cable glands are enclosed with the device, not ready-mounted.
1. In such instances, it is absolutely essential to remove the sealing plugs from the cable
entries on the housing floor. These plugs are used for protection during transportation.
2. Then mount the glands in the appropriate entries.
If you do not remove the sealing plugs, the leak-tightness of the housing - and thus the degree
of protection - cannot be guaranteed.
4.2.2 Additional cable entries required
Many cable entries are sealed closed, depending on the version. If you require these entries, you
have to open them with a suitable tool (e.g. screwdriver).
Note the following if opening the entries:
•Only break open the entries at temperatures > 0 °C (32 °F)
• Use a suitable object (e.g. cloth, protective work glove) to protect the cables and mechanic
parts in the interior.
• Only break open the entries if the housing is sealed.
• Carefully clean and smooth the edges to guarantee the leak-tightness of the cable glands.
• The largest entry (E, M28) may not be broken open manually. Instead use a conical or step
drill bit to drill the entry open. The same conditions apply as when breaking open the entry.

Installation Liquiline CM442
12 Endress+Hauser
4.2.3 Dimensions
a0012396
Fig. 4: Field housing dimensions

Liquiline CM442 Installation
Endress+Hauser 13
4.2.4 Mounting plate
4.2.5 Weather protection cover (optional)
!Note!
When installing outside, always use the weather protection cover (accessory) to protect the
transmitter against weather conditions.
a0012426
Fig. 5: Mounting plate
a0012428
Fig. 6: Weather protection cover for CM44x

Installation Liquiline CM442
14 Endress+Hauser
4.3 Installation instructions
!Note!
You require the post mounting kit to mount the unit on a pipe, post or railing (circular or square,
clamping range 20 to 61 mm (0.79 to 2.40")). The post mounting kit can be ordered as an
option.
4.3.1 Post mounting
a0012665
Fig. 7: Post mounting (exploded view)
1
2
3
4
Weather protection cover (optional)
Post mounting plate (post mounting kit)
Spring washers and nuts (post mounting kit)
Pipe clamps (post mounting kit)
5
6
7
8
Spring washers and nuts (post mounting kit)
Pipe or post (circular/square)
Mounting plate
Threaded rods (post mounting kit)

Liquiline CM442 Installation
Endress+Hauser 15
4.3.2 Railing mounting
a0012666
Fig. 8: Post mounting
a0012667
Fig. 9: Attaching Liquiline, clicking into place
a0012668
Fig. 10: Railing mounting (exploded view)
1
2
3
4
5
Weather protection cover (optional)
Post mounting plate (post mounting kit)
Spring washers, nuts (post mounting kit)
Pipe clamps (post mounting kit)
Spring washers, nuts (post mounting kit)
6
7
8
9
Pipe or post (circular/square)
Mounting plate
Threaded rods (post mounting kit)
Screws (post mounting kit)

Installation Liquiline CM442
16 Endress+Hauser
4.3.3 Wall mounting
!Note!
Mount the controller in such a way that the wall support surface is the size of the rear housing
panel at the very least.
a0012669
Fig. 11: Railing mounting
a0012670
Fig. 12: Attaching Liquiline, clicking into place
a0012686
Fig. 13: Necessary spacing
a0012684
Fig. 14: Wall mounting
1Wall
2 4 drill holes1)
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 cus-
tomer.
a0012685
Fig. 15: Attaching Liquiline, clicking into
place

Liquiline CM442 Installation
Endress+Hauser 17
4.3.4 Disassembly (for conversion, cleaning etc.)
"Caution!
The controller can be damaged if dropped
When pushing the housing out of the holder, secure the housing in such a way that you do not
drop it. If possible, ask a second person to help you.
4.4 Post-installation check
• After installation, check the transmitter for damage.
• Check whether the transmitter is protected against moisture and direct sunlight (e.g. by the
weather protection cover).
a0013154
Fig. 16: Disassembly
1. Hold down the latch
2. Push up the housing to remove it from the holder
a0013155
Fig. 17: Disassembly
3. Remove the controller from the front
1.
2.
3.

Wiring Liquiline CM442
18 Endress+Hauser
5 Wiring
#Warning!
• The electrical connection may only be established by an electrical technician.
• The electrical technician must have read and understood these Operating Instructions and
must follow the instructions they contain.
•Prior to beginning any wiring work, make sure voltage is not applied to any of the cables.
5.1 Opening the housing
"Caution!
Pointed or sharp tools
If unsuitable tools are used, they can scratch the housing or damage the seal, and thus have a
negative 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.
!Note!
Release the housing screws step by step. Start with any screw and then release the screw
diagonally opposite etc.
When closing the housing, also tighten the screws step-by-step in a diagonally opposite
sequence.
5.2 Cable mounting rail
a0012688
Fig. 18: Releasing housing screws in a diagonally opposite
sequence with Phillips screwdriver
a0012689
Fig. 19: Opening display cover, max. opening angle 180°
(depends on installation position)
£180°
a0012454
Fig. 20: Cable mounting rail and associated function
1
2
Cable mounting rail
Threaded bolt (protective ground, e.g. mains)
3
4
Additional threaded bolts for ground connections
Cable clamps (fixing+grounding the sensor cables)

Liquiline CM442 Wiring
Endress+Hauser 19
5.3 Cable terminals
5.3.1 Plug-in terminals for Memosens connections
!Note!
After connection, make sure that every cable end is securely in place. Terminated cable ends, in
particular, tend to come loose easily if they have not been correctly inserted as far as the limit
stop.
5.3.2 All other plug-in terminals
a0012691
Fig. 21: Press the screwdriver against
the clip (opens the terminal)
a0012692
Fig. 22: Insert the cable until the limit
stop
a0012693
Fig. 23: Remove the screwdriver
(closes the terminal)
a0012694
Fig. 24: Insert the screwdriver until the
limit stop (opens the terminal)
a0012695
Fig. 25: Insert the cable until the limit
stop
a0012696
Fig. 26: Remove the screwdriver
(closes the terminal)

Wiring Liquiline CM442
20 Endress+Hauser
5.4 Supply voltage and outputs
"Achtung!
The device does not have a power switch.
The customer must provide a protected circuit breaker in the vicinity of the device. This must
be a switch or a power-circuit breaker and must be labeled as the circuit breaker for the device.
The device versions for 24 V shall be powered from a limited energy source with a max. available
current of 8 A, which is separated from hazardous live by double or reinforced insulation at the
source of the supply.
5.4.1 Basic module
a0012405
Fig. 27: Basic module BASE-H or -L
1 Power supply for digital fixed cable sensors with
Memosens protocol
2 SD card slot
3 Slot for the display cable1)
4 Service interface
5 Connections for 2 Memosens sensors
6 Current outputs
7 Power connection
8Fuse
9 Alarm relay connection
1) Internal device connection. Do not disconnect the connector!
a0012404
Fig. 28: Wiring diagram for basic module BASE-H or -L
H High power = power unit 100 to 230 VAC
L Low power = power unit 24 VAC or 24 VDC