Endress+Hauser Liquiline Control CDC90, Operating Instructions Manual

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Liquiline Control CDC90 Diagnostics and troubleshooting
Hauser 91
11 Diagnostics and troubleshooting
11.1 Overview of diagnostic information
11.1.1 Device-specific, general diagnostic messages
To call up the error list, select:
Path:
Menu / DIAG / Diagnosis list
Item Error message Troubleshooting
1 The time for implementing the
program step has been exceeded.
More information is provided in
additional error messages.
2 Ethercat communication:
3 Ethercat communication: First
network connection was not
opened.
‣
Test the communication connection
between the control unit and the valve
manifold and between the valve manifold
and external digital inputs and outputs.
7 Ethercat communication: SDO write
error in starting procedure.
8 Ethercat communication: SDO
time-out in starting procedure.
9 Communication between control
unit and pilot valve manifold
canceled.
‣
Check connection between the devices.
100 Communication between control
unit and pilot valve manifold
canceled.
‣
Check connection between the devices.
200 Error in external digital input
module
‣
Check communication connection between
pilot valve manifold and DIO module.
200 External DIO module not in
operation. 1. Restart system.
2. Replace module.
3. Check communication connection
between DIO module and valve island.
201 Error in external digital input
module
‣
Check communication connection between
pilot valve manifold and DIO module.
300 Transmitter not communicating. 1. Check communication cable between
transmitter and controller.
2. Check transmitter power supply.
300 Communication between control
unit and transmitter canceled.
‣
Check connection between the devices.
300 Communication between control
unit and transmitter canceled.
‣
Check connection between the devices.
301 Error from digital input and output
module of transmitter. 1. Check if module is correctly connected.
2. Replace module.
302 Air pressure threshold is not
measured. 1. Check if air pipes are sealed.
2. Check pressure supply unit.
304 Uncertain measured value.
Possible reasons:
Sensor fouled
Incorrect application 1. Clean the sensor.
2. Check application.