To Next PageTo Next PageWhy 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 |
