When An Error Has Occurred In A Safety Function Module; When The Specific Extension Base Unit Cannot Be Recognized; When The Specific Q Series Extension Base Unit Cannot Be Recognized - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

When an error has occurred in a safety function module

When the READY LED turns off
When the READY LED of the safety function module turns off, check the following.
Check item
Check if the safety function module has been properly mounted.
Check if the system was powered on immediately after power-off.
If the READY LED of the safety function module still does not turn on even after the above actions are taken, the possible
cause is a hardware failure of the module. Please consult your local Mitsubishi representative.

When the specific extension base unit cannot be recognized

For troubleshooting, refer to the following:
 MELSEC iQ-R Module Configuration Manual
When the specific Q series extension base unit cannot be
recognized
For troubleshooting, refer to the following:
 MELSEC iQ-R Module Configuration Manual
APPX
800
Appendix 3 Troubleshooting by Symptom
Action
If not, properly mount the module on the base unit.
Wait for five seconds or longer after power-off and power on the system again.