IFM Electronic G1502S - 8�5�3 Fault Diagnosis

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8.5.3 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
Fault
• No voltage supply
• Overvoltage
► Check wiring
► Check power supply
K1 E1 T1 POWER
K2 E2
Fault T
Fault
• Short circuit
• Wire break
► Check wiring
K1 E1 T1 POWER
K2 E2
Fault T
Fault
• Short circuit
• Wire break
► Check wiring
K1 E1 T1 POWER
K2 E2
Fault T
Fault
• Short circuit
• Wire break
► Check wiring
K1 E1 T1 POWER
K2 E2
Fault T
Fault
• Feedback contacts open
• Wire break
► Check wiring
K1 E1 T1 POWER
K2 E2
Fault T
Fault
• When voltage is applied:
Feedback contacts open
► Check output circuit
► Check feedback contacts
► Exchange external contactor
K1 E1 T1 POWER
K2 E2
Fault T
Fault
• Wiring fault
• Missing link Y4/Y5
• Short circuit
► Check wiring