Endress+Hauser CM14 User manual

CM14
Transmitter, pH and ORP
BA01032C/09/EN/01.11
71140560

CM14 Table of contents
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 designation ............ 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 Installation check and switching on the
device .................. 17
6.2 Display settings (Display menu) ..... 17
6.3 Configuration of the device (Setup
menu) .................. 17
6.4 Extended configuration (Extended
setup menu) ............... 18
6.5 Device diagnostics (Diagnostics
menu) .................. 20
7 Calibration and
adjustment ............. 22
7.1 Definitions ................ 22
7.2 pH sensors ................ 22
7.3 ORP sensors ............... 24
7.4 Device functions for calibration ..... 25
8 Maintenance ........... 25
9 Accessories ............ 26
9.1 Sensors .................. 26
10 Troubleshooting ......... 27
10.1 Troubleshooting instructions ...... 27
10.2 Diagnostic messages ........... 27
10.3 Spare parts ................ 32
10.4 Return .................. 32
10.5 Disposal ................. 33
11 Technical data .......... 33
Index .................... 41

Safety instructions CM14
4
1 Safety instructions
Safe operation of the transmitter is only guaranteed if these Operating Instructions have been
read and the safety instructions they contain 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.
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.
Hazardous area
To eliminate a danger for persons or for the facility when the device is used in the hazardous
area (e.g. explosion protection, pressure vessel safety):
►Based on the nameplate, check whether the ordered device is permitted for the intended use
in the hazardous area.

CM14 Safety instructions
5
►Observe the specifications in the separate supplementary documentation that is an integral
part of these Instructions.
1.4 Designated use
The transmitter evaluates measured values of an analytical sensor and shows them on its
multicolored display. Using the unit's outputs and limit relays, processes can be monitored and
controlled. The device is equipped with a wide range of software functions for this purpose.
• The manufacturer accepts no liability for damages resulting from incorrect use or use other
than that designated. The device may not be converted or modified in any way.
• The process display unit has been designed for panel installation and may 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 prior notice. Contact your sales center for current information and updates
to these 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.
Enclose a note describing the fault and the application when sending the unit in for repair.
1.7 Notes on safety conventions and icons
1.7.1 Warning instructions
!DANGER
Cause (/effects)
Where applicable, consequences of failure to comply
►Avoidance measure
►Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
!WARNING
Cause (/effects)
Where applicable, consequences of failure to comply
►Avoidance measure
►Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.

Safety instructions CM14
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!CAUTION
Cause (/effects)
Where applicable, consequences of failure to comply
►Avoidance measure
►Indicates a potentially hazardous situation which, if not avoided, may result in minor to
moderate injury.
NOTICE
Cause (/effects)
Where applicable, consequences of failure to comply
►Avoidance measure
►This note alerts you to situations that can cause property damage.
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, tip
Reference to documentation
Reference to page of these instructions
Reference to a graphic

CM14 Identification
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2 Identification
2.1 Device designation
2.1.1 Nameplate
Compare the nameplate with the following illustration:
A0015221
å 1 Nameplate of the transmitter (example)
1Device designation
2 Order code, serial number and ID number of the device
3 Power supply
4 Power consumption
5 Output variables
6 Temperature range
2.2 Scope of delivery
The scope of delivery of the transmitter comprises:
• Transmitter for panel mounting
• Operating Instructions
• Fastening material

Identification CM14
8
2.3 Certificates and approvals
CE mark, Declaration of Conformity
The process display unit 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 device meets the relevant
standards and directives as per EN 61 010-1 "Safety requirements for electrical equipment for
measurement, control and laboratory use."
Thus, the device described in these Operating Instructions meets the legal requirements of the
EU directives. The manufacturer confirms successful testing of the device by affixing to it the CE
mark.
For an overview of all available certificates and approvals, refer to the "Technical data" chapter.

CM14 Installation
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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" (® ä 33).
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" (® ä 33).
• 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
å 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
!WARNING
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 not 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
å 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,
(® å 3, ä 12) and on the
housing.

Operation CM14
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5 Operation
The easy operating concept of the device makes it possible for users to commission the device
for many applications without a printed set of Operating Instructions.
5.1 Display and device status indicator/LED
A0015891
å 4 Display of the device
1 Dot-matrix section
2 7-segment section
3 LED status indicator power supply connected
4 LED status indicator alarm function
5 LED status indicator limit function relay 1/2
6 Operating keys
The device provides a backlit LC display which is split into two sections. The segment section
shows the measured value.
In the dot matrix section, additional channel information, such as the TAG, unit or bar graph, is
shown in display mode. Operating text in English is displayed here during operation.
The parameters for configuring the display are explained in detail in Section 6.4.
In the event of an error, the device switches automatically between displaying the error and
displaying the channel, see Section 6.5.3 and Section 9 ‘Troubleshooting’.
5.2 Local operation at the device
The device is operated by means of the three keys integrated in the front part of the device

CM14 Operation
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A0010420
A0010421
• Open the configuration menu
• Confirm an entry
• Select a parameter or submenu offered in the menu
A0010422
Within the configuration menu:
• Scroll step-by-step 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 min. and max. values for all the active channels.
You can always exit items/submenus at the end of the menu by selecting "x Back".
Leave the setup directly without saving the changes by pressing the ‘-’ and ‘+’ keys
simultaneously for over 3 s seconds.
5.3 Icons
5.3.1 Display icons
Hold function ((® ä 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 display of the measured value.
In the dot matrix section, the error and the channel name (TAG) are specified.
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 the setup
Symbol for the Expert setup
Symbol for diagnostics

Operation CM14
16
Accept entry.
If this icon is selected, the information entered is accepted at the position and the user exits the editing
mode.
Reject entry.
If this icon is selected, the information entered is rejected and the user exits the editing mode. The text
configured beforehand remains unchanged.
Move one position to the left.
If this icon is selected, the cursor moves one position to the left.
Delete back.
If this icon is selected, the character to the left of the cursor is deleted.
Delete all.
If this icon is selected, all the information entered is deleted.
5.4 Operating functions
The operating functions of the transmitter are organized into the following menus:
Display Adjusting the device display: contrast, brightness, switching time for displaying the measured values
Setup Device settings
For descriptions of the individual settings, refer to the chapter on Commissioning, .
Calibration Carrying out the sensor calibration
For descriptions of the calibration functions, refer to the chapter on Calibration, .
Diagnostics Device information, diagnostic logbook, sensor information, simulation
5.5 Hold function
The effect of the Hold function is to "freeze" the current outputs and relay states. It can be
switched on or off manually (menu Setup É Manual hold). Furthermore, the Hold function is
automatically activated during sensor calibration.
The Hold function remains active after discontinuation of the hold condition for an adjustable
Hold-release time. The Hold-release time can be set under Setup É Extended setup É
System É Hold release.
The measured value display is not affected by the Hold function. The Hold symbol is displayed
behind the measured value.

CM14 Commissioning
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6 Commissioning
6.1 Installation check and switching on the device
Make sure that all post-connection checks have been carried out before you commission your
device:
•"Installation check" checklist, (® ä 10).
•"Post-connection check" checklist, (® ä 13).
Once the operating voltage is applied, the green LED lights up and the display indicates that the
device is operational.
When you commission the device for the first time, you program the setup in accordance with
the descriptions provided in these Operating Instructions in the following sections.
When commissioning a device already configured or preset, measuring is immediately started as
per the settings. The values of the channels currently activated appear on the display.
Remove the protective foil from the display as this restricts display legibility otherwise.
6.2 Display settings (Display menu)
Press the 'E' button during operation to call up the main menu. The Display menu appears in
the display. Pressing the 'E' key again opens the menu. Select the "x Back" option at the end of
each menu/submenu to navigate one level higher in the menu structure.
Parameter Configuration options Description
Contrast 1-7
Default: 5
Configures the display contrast.
Brightness 1-7
Default: 5
Configures the display brightness.
Display scrolling 0, 3, 5, 10 sec Switching time between the two measured
values.
0 means no switching.
6.3 Configuration of the device (Setup menu)
Press the 'E' button during operation to call up the main menu. Use the '+'- and '-' buttons to
navigate through the available menus. When the desired menu is displayed, press the 'E' key to
open the menu. Select the "x Back" option at the end of each menu/submenu to navigate one
level higher in the menu structure.
The Setup menu includes the most important settings for the function of the device.
Parameter Configuration options Description
Tag Free text
Max. 16 characters
Enter the device designation (tag).
Current range 4-20 mA
0-20 mA
Configure the measuring range for the current
output.

Commissioning CM14
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Parameter Configuration options Description
Out main 0/4 mA Numerical value 0.000 to 99 999
1.0 pH
Physical value corresponding to the lower range
limit of the analog output.
If the set value is undershot, the current output
goes to the saturation current 0/3.8 mA.
Out main 20 mA Numerical value 0.000 to 99 999
12 pH
Physical value corresponding to the upper
range limit of the analog output.
If the set value is exceeded, the current output
goes to the saturation current 20.5 mA.
Out temp 0/4 mA Numerical value–50 to 250 °C
–5 °C
Temperature corresponding to the measuring
range lower limit of the temperature input.
If the set value is undershot, the current output
goes to the saturation current 0/3.8 mA.
Out temp 20 mA Numerical value–50 to 250 °C
100 °C
Temperature corresponding to the measuring
range upper limit of the temperature input.
If the set value is exceeded, the current output
goes to the saturation current 20.5 mA.
Damping main value 0 to 60 s
0 s
Configure the damping for the 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
chapter, .
Manual hold Off, On Function to hold the current and relay outputs
6.4 Extended configuration (Extended setup menu)
Press the 'E' button during operation to call up the main menu. Press the '+' button during
operation 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. Select the "x Back" option at
the end of each menu/submenu to navigate one level higher in the menu structure.
Parameter Configuration options Description
System General settings
Tag Free text
Max. 16 characters
Enter the device designation (tag).
Temp. Unit °C
°F
Configures the temperature unit.
Hold release 0 to 600 s
0 s
Configuration that specifies how long a device
hold continues once the hold condition no
longer applies.
Alarm delay 0 to 600 s
0 s
Delay time for issuing an alarm. This suppresses
alarm conditions that occur for a period shorter
than the alarm delay time.
Input Settings of the device

CM14 Commissioning
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Parameter Configuration options Description
Operating mode pH (pH sensor)
mV (ORP sensor)
Configures the operating mode.
Unit pH, mV Unit of the physical value.
Format none, one, two Configure the number of decimal places for the
display.
Damping main value 0 to 60 s
0 s
Configure the damping for the low-pass
filtering of the input signals.
Temp. comp. Automatic,
Manual,
Off
Configures the temperature compensation.
T. comp. cal. off, Linear Configure the temperature compensation for
cell constant calibration.
Ref. temp. 25 °C Reference temperature
Process check Check the process settings.
Function On, Off Switch on the process check.
Inactive
time
1 to 240 min
60 min
Duration of the process check.
Band
width
1 to 20 %
1 %
Bandwidth for the process check.
Analog outputs Settings for analog outputs.
Current range 4-20 mA
0-20 mA
Current span for analog output.
Out main 0/4 mA Numerical value 0.000 - 99999
2.0 pH
Physical value corresponding to the lower range
limit of the analog output.
Out main 20 mA Numerical value 0.000 - 99999
12 pH
Physical value corresponding to the upper
range limit of the analog output.
Out temp 0/4 mA Numerical value–50 to 250 °C
–5 °C
Temperature corresponding to the measuring
range lower limit of the temperature input.
Out temp 20 mA Numerical value–50 to 250 °C
100 °C
Temperature corresponding to the measuring
range upper limit of the temperature input.
Damping main value 0 to 60 s
0 s
Configure the damping for the low-pass
filtering of the input signals.
Relay 1/2 Settings for the relay outputs.
Function Off, Min limit, Max limit, In band,
Out band, Error
Configure the function of the relay.
Assignment Main, Temp Assign the relay to the main or temperature
input.
Set point Numerical value
0.0
Cannot be configured for function Error (error
message relay).

Commissioning CM14
20
Parameter Configuration options Description
Set point 2 Numerical value
0.0
Only for function In band or Out band.
Hyst. Numerical value
0.0
Configures the hysteresis. Not for function
Error.
Delay time 0 to 60 s
0 s
Configure the delay until the relay switches.
Not for function Error.
Factory default Reset the device settings to the factory settings.
Please confirm no, yes Confirm reset.
6.4.1 Configuration of the relays
The device has two relays with limit values that are either switched off or can be allocated to
the input signal. The operating mode of the relays as normally open or normally closed is
determined by the wiring of the changeover contact ((® ä 35)). The limit value is entered as
a numerical value including the position of the decimal point. Limit values are always assigned
to a relay. Each relay can be assigned a channel or calculated value. In "Error" mode, the relay
acts as an alarm relay and switches for each error or alarm.
The following settings can be made for each of the two limit values: assignment, limit, hysteresis,
switching behavior, delay and fault mode.
6.5 Device diagnostics (Diagnostics menu)
Press the 'E' button during operation to call up the main menu. Use the '+'- and '-' buttons to
navigate through the available menus. When the desired menu is displayed, press the 'E' key to
open the menu. Select the "x Back" option at the end of each menu/submenu to navigate one
level higher in the menu structure.
Parameter Configuration options Description
Current diag. Read only Display the current diagnostic message
Last diag. Read only Display the last diagnostic message
Diagnost logbook Read only Display the last diagnostic messages
Device info Read only Display device information
Device tag Read only View the device designation
Device name Read only Display the device name
Serial number Read only Displays the serial number of the device
Order ident Read only Displays the order code of the device
FW revision Read only Display the firmware version
ENP version Read only Display the version of the electronic type plate
Module ID Read only Display the module ID