Possible Situations When Creating Circuit Diagrams - ABB CL Series Applications Manual

What happens if ...?
Messages from
the CL system on
the LCD display
ERROR: LCD
ERROR: ACLOW
Possible situations when
creating circuit diagrams
Possible situations when
creating circuit diagrams
Cannot enter contact or relay in
circuit diagram
Time switch switches at wrong
times
Message when using a memory
module PROG INVALID
Power flow display does not
show changes to the rungs
Relay Q or M does not energize
248
Explanation
LCD is faulty
Incorrect AC voltage
Logic relay is faulty
Explanation
Logic relay is in RUN mode
Time or time switch parameters not
correct
CL memory module without circuit
diagram
Circuit diagram on the memory module
uses contacts/relays that the logic relay
does not recognise
Logic relay is in STOP mode
Association/connection not fulfilled
Relay does not activate coil
Incorrect parameter values/time
• Analog value comparison is incorrect
• Time value of timing relay is incorrect
• Function of timing relay is incorrect
Relay coil has been wired up several
times
1SVC 440 795 M0100
Remedy
Replace logic relay
Test the voltage
Replace logic relay
Remedy
Select STOP mode
Check time and
parameters
Change CL type or
change the circuit
diagram in the
memory module
Select RUN mode
Check and modify
circuit diagram and
parameter sets
Check coil field entries