25
UK
8.2.3 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/A2 reversed
►
Check wiring
►
Check power supply
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
• Wire break
• Feedback contacts open
• Time-dependent contacts
►
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
• Short circuit
• Connection A1/A3 or A2/A3
exchanged
►
Check wiring
K1
E1
T1
POWER
K2
E2
Fault
T
Fault
• Short circuit S43/L+ or S44/L-
►
Check wiring
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
• Short-circuit S34/S44 or S33/
S43
►
Check wiring
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
• Short circuit S34/L+
►
Check wiring