Mitsubishi Electric FR-A700 Instruction Manual page 735

Troubleshooting
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
FR-A700 EC
E.OP3
Communication option alarm
Stops the inverter output when a communication line error occurs in the communication
option.
Check for a wrong option function setting and operation.
Check that the plug-in option is plugged into the connector securely.
Check for a brake in the communication cable.
Check that the terminating resistor is fitted properly.
Check the option function setting, etc.
Connect the plug-in option securely.
Check the connection of communication cable.
E.1
E.2
E.3
Option alarm
Stops the inverter output if a contact faullt, etc. of the connector between the inverter
and communication option occurs or if a communication option is fitted to the connector
1 or 2.
Appears when the switch for the manufacturer setting of the plug-in option is changed.
Check that the plug-in option is plugged into the connector securely. (1 to 3 indicate the
option connector numbers.)
Check for excess electrical noises around the inverter.
Check that the communication option is not fitted to the connector 1 or 2.
Connect the plug-in option securely.
Take measures against noises if there are devices producing excess electrical noises
around the inverter.
If the problem still persists after taking the above measure, please contact your sales
representative or distributor.
Fit the communication option to the connector 3.
Return the switch for the manufacturer setting of the plug-in option to the initial status.
(Refer to instruction manual of each option.)
E.PE
Parameter storage device alarm (control circuit board)
A fault occurred in parameters stored (E²PROM failure).
Check for too many number of parameter write times.
Please contact your sales representative.
When performing parameter write frequently for communication purposes, set "1" in Pr. 342
to enable RAM write. Note that powering off returns the inverter to the status before RAM
write.
Causes and corrective actions
FR-PU04
Option3 Fault
FR-PU07
Fault 1
FR-PU04
Fault 2
FR-PU07
Fault 3
FR-PU04
Corrupt Memry
FR-PU07
7 - 17