What Happens If - ABB CL Series Applications Manual

1SVC 440 795 M0100
Messages from the
CL system
Messages from
the CL system on
the LCD display
No display
Continuous display
TEST: AC
TEST: EEPROM
TEST: DISPLAY
TEST: CLOCK
ERROR: I2C
ERROR: EEPROM
ERROR: CLOCK
7

What happens if ...?

You may sometimes find that the logic relay does not do
exactly what you expect. If this happens, read through the
following notes which are intended to help you solve some
of the problems you may encounter.
You can use the power flow display in the logic relay to
check the logic operations in the CL circuit diagram with
reference to the switching states of contacts and relays.
Only qualified persons should test the logic relay voltages
while the device is in operation.
Explanation
Power supply interrupted
LCD is faulty
Self-test aborted
Memory module removed or not inserted
correctly before saving
Memory module is faulty
Logic relay is faulty
The memory for storing the retentive values
or the CL circuit diagram memory is faulty.
Clock error
Remedy
Switch on the power supply
Replace logic relay
Replace logic relay
Insert memory module
Change memory module
Replace logic relay
Replace logic relay
Replace logic relay
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