IFM Electronic G1502S - 8�1�3 Fault Diagnosis

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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
Fault
• No voltage supply
• Overvoltage
• Connection A1/A3 or A1/A2
reversed
► Check wiring
► Check power supply
K1 E1 T1 POWER
K2 E2
Fault T
Fault
• Wire break
• Feedback contacts open
► Check wiring
► Switch the safety relay off
and on again
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
• 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
Fault
• Short circuit S33/S43 ► Check wiring
K1 E1 T1 POWER
K2 E2
Fault T
Fault
• Short circuit S33/S43 ► Check wiring