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6.3 Extension Safety Relay Module
6.3.1 Error check method with LED
6
TROUBLESHOOTING
6.3 Extension Safety Relay Module
6.3.1 Error check method with LED
Table 6.5 shows description, cause investigation, and corrective action of errors
depending on LED display on the module.
: ON, : Flash, : OFF, *: ON or OFF
* 1: The status that start-up processing has been performed to the module
Table 6.5 Error handling of safety part with LED
LED signal
Cause Corrective action
PW ERR. Z K1 K0 X1 X0
Normal (before start-up) -
Normal (started up) -
**
The module power supply is not normally
supplied.
•Check if the power supply is normally
supplied.
•Check between the power supplies for
short.
•In case of input N type, check between
the dual inputs for short.
* * Contact welding of K0 and K1 relays
•Replace the module.
K0 and K1 relays do not turn ON.
*1
Safety system 1 does not turn ON.
*1
Safety system 2 does not turn ON.
*1
Safety system 1 does not turn OFF.
*1
Safety system 2 does not turn OFF.
*1
* *****
•System error occurred.
•The safety power supply is not normally
supplied.
•Check if the power supply is normally
supplied.
•Check between the power supplies for
short.