18
8.1.3 Fault diagnosis
In case of a fault switch the safety relay off and on again!
LED display
Cause of the fault
Troubleshooting
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
•
No voltage supply
•
Overvoltage
•
Connection A1/A3 or A1/A2
reversed
►
Check wiring
►
Check power supply
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
•
Wire break
•
Feedback contacts open
►
Check wiring
►
Switch the safety relay off
and on again
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
•
When voltage is applied:
Feedback contacts open
►
Check output circuit
►
Check feedback contacts
►
Exchange external
contactor
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
•
Wiring fault
•
Short circuit
•
Inputs S34 and S43 “1” when
voltage is applied
►
Check wiring
►
Switch the fail-safe sensor/
switch off and on again
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
•
Short circuit S33/S43
►
Check wiring
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
•
Short circuit S33/S43
►
Check wiring
Summary of Contents for efector 110 G1502S
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