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6.2 CC-Link Safety Relay Module
6.2.1 Error check method with LED
6
TROUBLESHOOTING
6.2 CC-Link Safety Relay Module
6.2.1 Error check method with LED
Table 6.3 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
POINT
When L ERR. LED turns ON or is flashing, it indicates that an error occurred in the
CC-Link system.
For troubleshooting of the CC-Link system, refer to the following manual.
CC-Link System Compact Type Remote I/O Module User's Manual
Table 6.3 Error handling of safety part with LED
LED signal
Cause Corrective action
PW S PW ERR. Z K1 K0 X1 X0
Normal (before start-up) -
Normal (started up) -
* *****
The safety 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.
***
The module power supply is not
normally supplied.
•Check if the power supply is
normally supplied.
•Check between the power supplies
for short.
* * Contact welding of K0 and K1 relays
•Replace the module.
K0 and K1 relays do not turn ON.
*1
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
OFF.
*1
Safety system 2 does not turn
OFF.
*1
* * *****
•System error occurred.
•No power supply on safety side
•Extension module communication
has not established.
•Extension module is disconnected.
•Check if the power supply is
normally supplied.
•Check between the power supplies
for short.
•Check if the extension module is
normally connected.