39
UK
8.4.3 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
• 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
• Wiring fault
• Missing link Y4/Y5
• Short circuit
• Contacts closed when voltage
is applied
► Check wiring
► Open contacts and RESET
or voltage failure
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
• Connection A2/A3 reversed
► Check wiring
K1
E1
T1
POWER
K2
E2
Fault
T
Fault
• Overvoltage
• Undervoltage
► Check wiring
► Check power supply
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
• Overvoltage
• Undervoltage
► Check wiring
► Check power supply