34 TROUBLESHOOTING BY SYMPTOM
34.3 When an Error Has Occurred in a Redundant Function Module
537
34
34.3 When an Error Has Occurred in a Redundant
Function Module
When the RUN LED turns off
When the RUN LED turns off after the redundant function module is powered on, check the following.
If the RUN LED of the redundant function module still does not turn on even after the above action is taken, the possible
cause is a hardware failure of the module. Please consult your local Mitsubishi representative.
When the ERR LED turns on or flashes
Check the following:
If the ERR LED still turns on or flashes even after the above action is taken, perform a module communication test and check
the module for a hardware failure. ( Page 428 Redundant Function Module Communication Test)
When the L ERR LED turns on
Check the following:
If the L ERR LED still turns on even after the above actions are taken, perform a module communication test and check the
redundant function module and tracking cables for failures. ( Page 428 Redundant Function Module Communication Test)
Check item Action
Check if the redundant function module has been properly mounted. If not, properly mount the module on the base unit.
Check item Action
Check if an error has occurred by performing the module diagnostics. Take actions proposed by the module diagnostics.
Check item Action
Check if the tracking cables used are proper. • Check if the tracking cables satisfy the standards. ( Page 78
Redundant Function Module)
• Check that the length of each tracking cable is within the range of the
specifications. ( Page 78 Redundant Function Module)
• Check if no disconnection is found on each tracking cable.
Check if each tracking cable has been properly connected. Check the connection status of each tracking cable by performing the module
diagnostics. If a tracking cable has not been properly connected, connect it
again.
To Next Page
Loading...
