Endress+Hauser CM14 User manual

Products Solutions Services
Operating Instructions
CM14
Transmitter, pH and ORP
BA01032C/09/EN/03.19
71462789
2019-11-30
Valid from version:
02.01 (device version)

CM14 Table of contents
Endress+Hauser 3
Table of contents
1 Safety instructions .............. 4
1.1 Workplace safety .................... 4
1.2 Requirements concerning the staff ...... 4
1.3 Operational safety ................... 4
1.4 Designated use ...................... 5
1.5 Technical improvement ............... 5
1.6 Return ............................. 5
1.7 Notes on safety conventions and
icons ............................... 5
2 Identification .................... 7
2.1 Device name ........................ 7
2.2 Scope of delivery ..................... 7
2.3 Certificates and approvals ............. 8
3 Installation ...................... 9
3.1 Incoming acceptance, transport,
storage ............................. 9
3.2 Installation ......................... 9
3.3 Dimensions ......................... 9
3.4 Installation procedure ............... 10
3.5 Post-installation check ............... 10
4 Wiring .......................... 11
4.1 Connecting the transmitter ........... 12
4.2 Post-connection check ............... 13
5 Operation ...................... 14
5.1 Display and device status indicator /
LED ............................... 14
5.2 Local operation at the device .......... 14
5.3 Icons .............................. 15
5.4 Operating functions ................. 16
5.5 Hold function ...................... 16
6 Commissioning ................ 17
6.1 Post-installation check and switching
on the device ....................... 17
6.2 Display settings (Display menu) ....... 17
6.3 Notes on setup access protection ...... 17
6.4 Configuration of the device (Setup
menu) ............................ 18
6.5 Extended configuration (Extended
setup menu) ....................... 19
6.6 Device diagnostics (Diagnostics
menu) ............................ 22
7 Calibration and adjustment .. 23
7.1 Definitions ......................... 23
7.2 pH sensors ......................... 23
7.3 ORP sensors ........................ 25
7.4 Device functions for calibration ....... 26
8 Maintenance .................. 26
9 Accessories .................... 27
9.1 Sensors ........................... 27
10 Troubleshooting ............... 28
10.1 Troubleshooting instructions ......... 28
10.2 Diagnostic messages ................ 28
10.3 Firmware history ................... 32
10.4 Spare parts ........................ 33
10.5 Return ............................ 34
10.6 Disposal ........................... 34
11 Technical data ................. 34
11.1 Input .............................. 34
11.2 Output ............................ 34
11.3 Current outputs, active ............... 35
11.4 Relay outputs ...................... 35
11.5 Wiring ............................ 36
11.6 Performance characteristics .......... 37
11.7 Mounting conditions ................ 37
11.8 Environment ....................... 38
11.9 Mechanical construction ............. 39
11.10 Display and operating elements ....... 40
11.11 Certificates and approvals ............ 40
Index ................................. 41

Safety instructions CM14
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1 Safety instructions
Safe operation of the transmitter is only guaranteed if these Operating Instructions have been
read and the safety instructions have been observed.
1.1 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
If working on and with the device with wet hands:
‣Due to the increased risk of electric shock, gloves must be worn.
1.2 Requirements concerning the staff
The personnel for installation, commissioning, diagnostics and maintenance must fulfill the
following requirements:
‣Trained, qualified specialists: must have a relevant qualification for this specific function
and task
‣Are authorized by the plant owner/operator
‣Are familiar with federal/national regulations
‣Before beginning work, the specialist staff must have read and understood the instructions
in the Operating Instructions and supplementary documentation as well as in the
certificates (depending on the application)
‣Following instructions and basic conditions
The operating personnel must fulfill the following requirements:
‣Being instructed and authorized according to the requirements of the task by the facility's
owner-operator
‣Following the instructions in these Operating Instructions
1.3 Operational safety
Risk of injury.
‣Operate the device in proper technical condition and fail-safe condition only.
‣The operator is responsible for interference-free operation of the device.
Conversions to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers.
‣If, despite this, modifications are required, consult with Endress+Hauser.
Repair
To ensure continued operational safety and reliability,
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe federal/national regulations pertaining to repair of an electrical device.
‣Use original spare parts and accessories from Endress+Hauser only.

CM14 Safety instructions
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1.4 Designated use
The transmitter evaluates measured values of an analytical sensor and visualizes them on its
multicolored display. Processes can be monitored and controlled with the unit's outputs and
limit relays. The device is equipped with a wide array of software functions for this purpose.
• The manufacturer does not accept liability for damage caused by improper or non-
designated use. The device may not be converted or modified in any way.
• The device is designed for installation in a panel and must only be operated in an installed
state.
1.5 Technical improvement
The manufacturer reserves the right to adapt technical details to the most up-to-date
technical developments without any special announcement. Please contact your sales center
for information on modifications or updates to the Operating Instructions.
1.6 Return
For a return, e.g. in case of repair, the device must be sent in protective packaging. The
original packaging offers the best protection. Repairs must only be carried out by your
supplier's service organization.
When returning the device for repair, enclose a note with a description of the problem
and the application.
1.7 Notes on safety conventions and icons
1.7.1 Warnings
LDANGER
Causes (/consequences)
Consequences of non-compliance (if applicable)
‣Corrective action
‣This symbol alerts you to a dangerous situation. Failure to avoid the situation will result in
a fatal or serious injury.
LWARNING
Causes (/consequences)
Consequences of non-compliance (if applicable)
‣Corrective action
‣This symbol alerts you to a dangerous situation. Failure to avoid the situation can result in
a fatal or serious injury.
LCAUTION
Causes (/consequences)
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.

Safety instructions CM14
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NOTICE
Causes (/consequences)
Consequences of non-compliance (if applicable)
‣Corrective action
‣This symbol alerts you to situations which may result in damage to property.
1.7.2 Document symbols
Allowed
Indicates procedures, processes or actions that are allowed.
Preferred
Indicates procedures, processes or actions that are preferred.
Forbidden
Indicates procedures, processes or actions that are forbidden.
Additional information, tips
Reference to documentation
Reference to a page in this manual
Reference to a graphic

CM14 Identification
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2 Identification
2.1 Device name
2.1.1 Nameplate
Compare the nameplate with the following diagram:
-10°C (14°F) < Ta < 60°C (140°F)
4
5
1
3
2
6
â 1
Liquiline
A0015221
 1 Nameplate of the transmitter (example)
1 Device name
2 Device order code, serial number and ID number
3 Power supply
4 Power consumption
5 Output values
6 Temperature range
2.2 Scope of delivery
The scope of delivery of the transmitter comprises:
• Transmitter for panel mounting
• Operating Instructions
• Fastening fixtures

Identification CM14
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2.3 Certificates and approvals
2.3.1 CE mark
The product meets the requirements of the harmonized European standards. As such, it
complies with the legal specifications of the EC directives. The manufacturer confirms
successful testing of the product by affixing to it the CE-mark.
2.3.2 EAC mark
The product meets the legal requirements of the EEU guidelines. The manufacturer confirms
the successful testing of the product by affixing the EAC mark.

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3 Installation
3.1 Incoming acceptance, transport, storage
The permitted ambient and storage conditions must be observed. The precise specifications
can be found in Section "Technical data" →  34.
3.1.1 Incoming acceptance
On receipt of the goods, check the following points:
• Are the packaging or contents damaged?
• Is anything missing from the delivery? Compare the scope of delivery with the information
you specified in the order.
3.1.2 Transportation and storage
Note the following points:
• Pack the device so that is protected against impact for storage and transportation. The
original packaging provides optimum protection.
• The permitted storage temperature range is –40 to +85 °C (–40 to +185 °F); it is possible to
store the device in the borderline temperature ranges for a limited period (maximum 48
hours).
3.2 Installation
NOTICE
Overheating due to heat accumulation in the device
‣To avoid heat accumulation, please always make sure the device is sufficiently cooled.
If the device is operated in the upper temperature limit range, this reduces the operating
life of the display.
The transmitter is designed to be used in a panel.
The orientation is determined by the readability of the display. Connections and outputs are
fitted on the rear of the device. The wires are connected by means of number-coded terminals.
Ambient temperature range:–10 to +60 °C (14 to 140 °F)
3.3 Dimensions
Observe the installation depth of 150 mm (5.91 ") for the device incl. terminals and fastening
clips.
More dimensions can be found in Section "Technical data" →  34.
• Panel cutout: 92 mm x 45 mm (3.62 in x 1.77 in).
• Panel thickness: max. 26 mm (1 in).
• Max. viewing angle range: 45° to the left and right from the central display axis.
• If the devices are arranged horizontally beside one another in the X-direction, or arranged
vertically on top of one another in the Y-direction, the mechanical distance (specified by the
housing and front section) must be observed.

Installation CM14
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3.4 Installation procedure
The required panel cutout is 92 mm x 45 mm (3.62 in x 1.77 in).
A0015216
 2 Installation in the panel
1. Screw the threaded rods (item 2) into the positions provided on the mounting frame
(item 1). Four opposing screw positions (item 3/4) are available for this purpose.
2. Push the device with the sealing ring through the panel cutout from the front.
3. To secure the tube in the panel, hold the device in a horizontal position and push the
installation frame (item 1), with the threaded rods screwed in, over the tube until the
frame locks into position.
4. Tighten the threaded rods to fasten the device in place.
To disassemble the device, the mounting frame can be unlocked at the locking elements (item
5) and then removed.
3.5 Post-installation check
• Is the sealing ring undamaged?
• Is the mounting frame securely engaged on the housing of the device?
• Are the threaded rods tightened?
• Is the device positioned in the center of the panel cutout?

CM14 Wiring
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4 Wiring
LWARNING
Danger from electrical voltage
‣The entire connection of the electrical system must take place while the device is de-
energized.
Danger if protective ground is interrupted
‣The protective ground connection must be established before any other connection is
made.
NOTICE
Thermal load of the lines
‣Use suitable lines for temperatures of 5 °C (9 °F) above ambient temperature.
Malfunction or destruction of the device due to incorrect supply voltage
‣Prior to commissioning, make sure the supply voltage matches the specifications on the
nameplate (bottom side of the housing).
Ensure the emergency shutoff of the device
‣Provide a suitable switch or power-circuit breaker in the building installation. This switch
must be provided within easy reach of the device and be labeled as a disconnector.
Protect device from overload
‣Provide a overload protection unit (rated current = 10 A) for the power supply line.
Incorrect wiring can cause destruction of the device
‣Observe the terminal designation on the rear of the device.
Energy-rich transients in long signal lines
‣Connect suitable upstream overvoltage protection in series.
It is permitted to connect a mixture of safety extra low voltage and voltage which poses a
shock hazard to the relays.

Wiring CM14
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4.1 Connecting the transmitter
A0015215
 3 Connection diagram of the transmitter
Terminal Description
87 Terminal for Memosens cable, brown, sensor power supply U+
88 Terminal for Memosens cable, white, sensor power supply U-
97 Terminal for Memosens cable, green, Com A
98 Terminal for Memosens cable, yellow, Com B
SHD Terminal for Memosens cable, shield
D11 Terminal for alarm output, +
D12 Terminal for alarm output, -
L/+
Terminal for transmitter supply voltage
N/-
 PE
133 Terminal for analog output 1, +
134 Terminal for analog output 1, -
233 Terminal for analog output 2, +
234 Terminal for analog output 2, -
R11, R12, R13 Terminal for relay 1
R21, R22, R23 Terminal for relay 2

CM14 Wiring
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4.2 Post-connection check
Device condition and specifications Notes
Are the device or cables damaged? Visual inspection
Electrical connection Notes
Does the supply voltage match the specifications on the nameplate? 24 to 230 V AC/DC
(–20 % / +10 %) 50/60 Hz
Are all of the terminals firmly engaged in their correct slots? Is the coding on the
individual terminals correct?
-
Are the mounted cables strain-relieved? -
Are the supply voltage and signal cables connected correctly? See connection diagram,
→  3,  12 and on the
housing.

Operation CM14
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5 Operation
The device's simple operating concept enables you to perform commissioning for many
applications without the need for hardcopy operating instructions.
5.1 Display and device status indicator / LED
A0015891
 4 Device display
1 Dot matrix section
2 7-segment display
3 LED status indicator, power supply connected
4 LED status indicator, alarm function
5 LED status indicator, limit switch relay 1/2
6 Operating keys
The device offers users a backlit LC display which is divided into two sections. The segment
section displays the measured value.
In the dot matrix section, additional channel information, such as the TAG, unit or bar graph,
is shown in the display mode. Operating text in English is displayed here during operation.
The parameters for configuring the display are explained in detail in the "Commissioning"
section.
In the event of an error, the device automatically switches between displaying the error and
displaying the channel, see the "Device diagnostics" →  22 and "Troubleshooting"
→  28 sections.
5.2 Local operation at the device
The device is operated using the three keys integrated in the front of the device

CM14 Operation
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• Open the Configuration menu
• Confirm an entry
• Select a parameter or submenu offered in the menu
Within the Configuration menu:
• Gradually scroll through the parameters / menu items / characters offered
• Change the value of the selected parameter (increase or decrease)
Outside the Configuration menu:
Display enabled and calculated channels, as well as minimum and maximum values, for all the active
channels.
You can always exit menu items / submenus by selecting "x Back" at the end of the menu.
Leave the setup directly without saving the changes by pressing the ‘-’ and ‘+’ keys
simultaneously for longer (> 3 s).
5.3 Icons
5.3.1 Display symbols
Hold function →  16 active.
Max Maximum value/value of the maximum indicator of the channel displayed
Min Minimum value/value of the minimum indicator of the channel displayed
Error, under/over range.
No measured value is displayed.
The device is locked / operator lock; the device setup is locked for changes to parameters; the
display can be changed.
The error and the channel identifier (TAG) are specified in the dot matrix section.
5.3.2 Icons in the editing mode
The following characters can be used to enter user-defined text:
‘0-9’, ‘a-z’, ‘A-Z’, ‘+’, ‘-’, ‘*’, ‘/’, ‘\’, ‘%’, ‘°’, ‘2’, ‘3’, ‘m’, ‘.’, ‘,’, ‘;’, ‘:’, ‘!’, ‘?’, ‘_’, ‘#’, ‘$’, ‘"’, ‘´’, ‘(’, ‘)’,
‘~’
For numerical entries, the numbers ‘0-9’ and the decimal point are available.
Furthermore, the following icons are used in the editing mode:
Symbol for setup
Symbol for expert setup
Symbol for diagnostics
Accept entry.
If this symbol is selected, the entry is applied at the position specified by the user, and you quit editing
mode.

Operation CM14
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Reject entry.
If this symbol is selected, the entry is rejected and you quit editing mode. The previously set text
remains.
Jump one position to the left.
If this symbol is selected, the cursor jumps one position to the left.
Delete backwards.
If this symbol is selected, the character to the left of the cursor position is deleted.
Delete all.
if this symbol is selected, the entire entry is deleted.
5.4 Operating functions
The operating functions of the transmitter are organized into the following menus:
Display Settings for the device display: contrast, brightness, time for alternating measured values on the
display
Setup Device settings
A description of the individual settings is provided in the "Commissioning" section →  17.
Calibration Execution of the sensor calibration
A description of the functions for calibration is provided in the "Calibration" section.
Diagnostics Device information, diagnostics logbook, sensor information, simulation
5.5 Hold function
The hold function causes the current outputs and relay states to "freeze". This function can be
switched on and off manually (menu Setup → Manual hold). In addition, the hold function is
automatically activated during sensor calibration.
When the hold condition no longer applies, the hold function continues to be active for the
configurable hold release time. The hold release time is configured in the menu Setup →
Extended setup → System → Hold release.
The hold function does not affect the display of the measured value. The hold symbol is also
displayed after the measured value.

CM14 Commissioning
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6 Commissioning
6.1 Post-installation check and switching on the device
Make sure that all post-connection checks have been carried out before you commission your
device:
• Checklist for "post-installation check", →  10.
• Checklist for "post-connection check", →  13.
After the operating voltage is applied, the green LED lights up and the display indicates the
device is ready for operation.
If you are commissioning the device for the first time, program the setup as described in the
following sections of the Operating Instructions.
When commissioning a device already configured or preset, measuring is immediately started
as per the settings. The values of the channels currently activated are shown on the display.
Remove the protective film from the display as this would otherwise affect the
readability of the display.
6.2 Display settings (Display menu)
You can access the main menu by pressing the 'E' key during operation. The Display menu
appears on the display. Press the 'E' key again to open the menu. Use the "x Back" option, which
can be found at the bottom of each menu/submenu, to move up one level in the menu
structure.
Parameters Possible settings Description
Contrast 1-7
Default: 6
Setting for the display contrast.
Brightness 1-7
Default: 6
Setting for the brightness of the display.
Alternating time 0, 3, 5, 10 sec Switching time between the two measured
values.
0 means that the values do not alternate on
the display.
6.3 Notes on setup access protection
Access to the setup is enabled by default (factory setting) and can be locked via the setup
settings.
Proceed as follows to lock the device:
1. Press E to enter the configuration menu.
2. Press + repeatedly until Setup is displayed.
3. Press E to open the Setup menu.
4. Press + repeatedly until Extended Setup is displayed.

Commissioning CM14
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5. Press E to open the Extended Setup menu; System is displayed.
6. Press E to open the System menu.
7. Press + repeatedly until Access code is displayed.
8. Press E to open the setting for access protection.
9. Set the code: press the + and - buttons to set the desired code. The access code is a four-
digit number. The corresponding position of the number is displayed in plain text. Press
E to confirm the value entered and go to the next position.
10. Confirm the last position of the code to exit the menu. The full code is displayed. Press +
to scroll back to the last item of the x Back submenu and confirm this item. By
confirming the point, the value is adopted and the display returns to the Setup level.
Again select the last parameter x Back to also exit this submenu and return to the
measured value/channel display level.
Once access protection has been successfully activated, the lock symbol appears on the
display.
Access to the calibration function can also be blocked by a code. The same procedure is
required here as for locking the setup. To activate it, however, press + repeatedly in step
7 until Calib Code is displayed.
The x Back item at the end of every picklist/menu item takes the user from the submenu
to the next menu level up.
If access protection is enabled, the device locks automatically after 600 seconds without
operation. The display switches back to the operating display.
To enable the setup, set the setup access code in the System Setup to 0000 or delete the
code by pressing C.
If you lose/misplace the code, a reset can only be performed by the Service Department.
6.4 Configuration of the device (Setup menu)
You can access the main menu by pressing the 'E' key during operation. Navigate through the
available menus with the '+' and '–' keys. When the desired menu is displayed, press the 'E' key
to open the menu. Use the "x Back" option, which can be found at the bottom of each menu/
submenu, to move up one level in the menu structure.
The Setup menu contains the most important settings for the operation of the device.
Parameters Possible settings Description
Current range 4-20 mA
0-20 mA
Configuration of the measuring range for the
current output.
Out 1 0/4 mA Numerical value
0.000 to 99 999
0.0 pH
Physical value which corresponds to the lower
range limit of the analog output.
When the configured value is undershot, the
current output is set to the saturation current
of 0/3.8 mA.

CM14 Commissioning
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Parameters Possible settings Description
Out 1 20 mA Numerical value
0.000 to 99 999
12 pH
Physical value which corresponds to the upper
range limit of the analog output.
When the configured value is exceeded, the
current output is set to the saturation current
of 20.5 mA.
Out 2 0/4 mA Numerical value –50 to 250 °C
0 °C
Temperature which corresponds to the
measuring range lower limit of the
temperature input.
When the configured value is undershot, the
current output is set to the saturation current
of 0/3.8 mA.
Out 2 20 mA Numerical value –50 to 250 °C
100 °C
Temperature which corresponds to the
measuring range upper limit of the
temperature input.
When the configured value is exceeded, the
current output is set to the saturation current
of 20.5 mA.
Damping main 0 to 60 s
0 s
Configuration of the damping for low-pass
filtering of the input signals.
Extended setup Advanced settings for the device, such as the
relay, limit values etc.
The functions are described in the following
section, →  19.
Manual hold Off, On Function for freezing the current and relay
outputs
6.5 Extended configuration (Extended setup menu)
You can access the main menu by pressing the 'E' key during operation. Use the '+' key to
navigate to the Setup menu. Press the 'E' key to open the menu. Navigate to the Extended
Setup menu and open the menu by pressing the 'E' key. Use the "x Back" option, which can be
found at the bottom of each menu/submenu, to move up one level in the menu structure.
Parameters Possible settings Description
System General settings
Device tag Customized text
Max. 16 characters
Use this function to enter the device tag.
Temp. unit °C
°F
Setting for the temperature unit
Hold release 0 to 600 s
0 s
Sets the time by which a device hold is
extended after the hold condition is
discontinued.
Alarm delay 0 to 600 s
0 s
Delay time for outputting an alarm. This
suppresses alarm conditions that are present
for a period that is shorter than the alarm
delay time.

Commissioning CM14
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Parameters Possible settings Description
Access code 0000 to 9999
Default: 0000
User code to protect the device configuration.
Additional information: 0000 = user code
protection is disabled
Calib Code 0000 to 9999
Default: 0000
User code to protect the calibration function.
Additional information: 0000 = user code
protection is disabled
Input Input settings
Main value pH
mV
Unit of the physical value.
Format None (pH only)
One
Two
Number of places after decimal point for the
display.
Damping main 0 to 60 s
0 s
Configuration of the damping for low-pass
filtering of the input signals.
Temp. comp. Off
Automatic
Manual
Configuration of the temperature
compensation.
Only visible for Main value = pH
Temp. offset Numerical value: –50 to 250 °C
0 °C
Configuration of a temperature offset.
Only visible for Main value = mV
Ref. temp. Numerical value:
–5.0 to 100 °C
25 °C
Configuration of the reference temperature.
Only visible for Main value = pH and Temp.
comp. = Manual.
Calib. settings Settings for calibration
Buffer 1 2.00 pH
4.00 pH
7.00 pH
9.00 pH
9.18 pH
10.00 pH
12.00 pH
pH value of buffer solution 1.
Only visible for Main value = pH
Buffer 2 2.00 pH
4.00 pH
7.00 pH
9.00 pH
9.18 pH
10.00 pH
12.00 pH
pH value of buffer solution 2.
Only visible for Main value = pH
Buffer mV Numerical value
100 mV
mV value for buffer solution.
Only visible for Main value = mV
Stability crit.
Delta mV 1 to 10 mV
1 mV
Duration 10 to 60 s
20 s