Why Endress+Hauser Controller display is dark?
The display might be dark because there is no supply voltage. In this case, check if the supply voltage is applied. Alternatively, the base module could be defective, requiring replacement.
What to do if Endress+Hauser Liquiline CM444 Controller values appear but display doesn't change or device cannot be operated?
If values appear on the display of your Endress+Hauser Controller, but the display doesn't change or the device cannot be operated, first check the modules and wiring to ensure they are correctly connected. If the wiring is correct, the issue might be an impermissible operating system condition. Try switching the device off and then on again.
Why Endress+Hauser Liquiline CM444 Controller has no current output signal?
If there is no current output signal from your Endress+Hauser Controller, the base module might be defective. Check this by using the integrated current simulation and connecting a mA meter directly to the current output.
What to do if Endress+Hauser Liquiline CM444 current output shows incorrect current value?
If the current output of your Endress+Hauser Controller shows an incorrect value, begin by checking the adjustment using the integrated current simulation and connecting a mA meter directly to the current output. Note that a load that is too large or a shunt/short to ground in the current loop can also cause this issue.
How to troubleshoot implausible measured values on Endress+Hauser Liquiline CM444 Controller?
If you are getting implausible measured values on your Endress+Hauser Controller, the inputs might be defective. You should perform tests and take measures as outlined in 'Process-specific errors' section Measuring input test: ? Connect the Memocheck Sim CYP03D to the input and use it to check the function of the input.
What to do if Endress+Hauser Liquiline CM444 display doesn't change?
If the Endress+Hauser Controller display shows values but doesn't change or cannot be operated, check the module wiring. Also, try switching the device off and on again.
Why is my Endress+Hauser Controller display dark?
If the Endress+Hauser Controller display is dark, check if the supply voltage is applied. If the supply voltage is present, the base module may be defective and require replacement.
General| Device Type | Controller |
|---|---|
| Measured Parameters | pH, ORP, conductivity, oxygen, chlorine, turbidity |
| Outputs | Analog, digital, relay outputs |
| Communication Protocols | PROFIBUS DP, Modbus RS485, Ethernet/IP |
| Display | Graphic LCD with backlight |
| Power Supply | 100-240 V AC or 24 V DC |
| Operating Temperature | -20 to +60 °C |
| Protection Class | IP66 |
| Housing Material | Plastic |
Explains the structure, signal words, and safety colors of signs according to ANSI Z535.6.
Specifies the qualifications and authorization required for personnel performing installation, commissioning, and maintenance.
Details the intended applications and environments for the Liquiline CM44x controller.
Outlines user responsibilities regarding installation instructions and local standards for safe operation.
Specifies the environmental and dimensional requirements for installing the device.
Provides instructions for post mounting the device onto pipes or railings.
Details the components and steps for mounting the device on a railing.
Details the components and steps for mounting the device on a wall.
Provides the physical dimensions of the field housing in millimeters and inches.
Details the components and steps for mounting the device on a post.
Lists checks to perform after the device has been installed to ensure proper operation.
Describes connection requirements for remote operation via HART.
Provides instructions on how to connect the device, including opening the housing.
Explains how to connect sensors using the Memosens protocol.
Explains how to establish remote operation using PROFIBUS DP communication.
Details remote operation setup for Modbus RS485 communication.
Details the power supply connection for the CM442 model.
Details the power supply connection for the CM444 and CM448 models.
Provides guidance on connecting additional I/O modules and relays.
Details the front panel and wiring diagram for current output modules.
Explains bus connections on module 485 and lists front panel LEDs.
Explains how to set the bus address using DIP switches on module 485.
Lists essential checks after electrical connections are made to ensure safety and correct wiring.
Details the setup for remote operation using a HART modem and FieldCare software.
Covers remote operation via Ethernet, Web server, Modbus TCP, and EtherNet/IP.
Lists sensor types compatible with the Memosens protocol and their connection cables.
Details the functionality of the DIO module for digital inputs and outputs.
Shows the front panel and wiring diagrams for relay modules.
Emphasizes the importance of correct connections for maintaining IP protection and safety.
Explains how to connect the device to a computer using the service interface and Fieldcare.
Covers communication via HART, PROFIBUS DP, Modbus RS485, and EtherNet/IP.
Explains how to navigate and operate the device's menu using the local display.
Details how to lock and unlock the device's operating keys with or without a password.
Describes various configuration options like display only and picklists.
Outlines safety checks and voltage verification before switching on the unit.
Guides through making essential basic settings like device tag, date, and time.
Describes the process of switching on the device and initial startup behavior.
Guides through setting the device's operating language and configuring display settings.
Details the display interface, soft keys, and measuring modes available on the device.
Explains how to configure current inputs for limit switches, logbooks, and controller setpoints.
Covers general settings such as device tag, temperature unit, output range, and alarm delay.
Guides on how to load a previously saved setup configuration onto the device.
Details the configuration of current outputs, alarm relays, and optional relays.
Describes the functions that can be output via relays.
Describes how to output diagnostics messages via the relay.
Provides instructions on how to install a firmware update using an SD card.
Explains how to export the device configuration in XML format.
Explains the advantages and procedure for saving the device setup to an SD card.
Provides steps for troubleshooting issues, including using diagnostic messages and error tables.
Guides on identifying and rectifying faults using diagnostic messages.
Explains the calibration procedure for sensors, including factory calibration and user-decided intervals.
Provides guidelines for cleaning the controller housing and digital sensors.
Categorizes and lists various sensors, including glass electrodes, ORP sensors, and pH-ISFET sensors.
Details web server features like remote configuration and logbook export.
Specifies measured variables, measuring ranges, input types, and cable specifications.
Details electrical specifications, span, input current, PFM function, and cable for digital inputs.
Describes output signals for HART, PROFIBUS DP, Modbus RS485, Ethernet, and EtherNet/IP.
Covers span, signal characteristic, internal resistance, and testing voltage for current inputs.
Outlines requirements for non-sparking devices in explosive environments, including gas groups and temperature classes.
Presents a control drawing illustrating the installation and operation in hazardous environments.
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