Mitsubishi Electric F700 Instruction Manual page 244

Operation Panel
E.OP1
Indication
Name
Option slot alarm
Stops the inverter output if a functional error (e.g. communication line error of the communication
Description
option or contact fault of the plug-in option other than the communication option) occurs in the plug-
in option fitted to the option slot.
· Check for a wrong option function setting and operation.
· Check that the plug-in option is plugged into the connector securely.
Check point
· Check for a brake in the communication cable.
· Check that the terminating resistor is fitted properly.
· Check that the option card is normal.
· Check the option function setting, etc.
Corrective action
· Connect the plug-in option securely.
Operation Panel
E. 1
Indication
Name
Option alarm
Stops the inverter output if a contact fault or the like of the connector between the inverter and
Description
communication option occurs.
1. Check that the plug-in option is plugged into the connector securely.
Check point
2. Check for excess electrical noises around the inverter.
1. Connect the plug-in option securely.
2. Take measures against noises if there are devices producing excess electrical noises around the inverter.
Corrective action
If the problem still persists after taking the above measure, please contact your sales
representative or distributor.
Operation Panel
E.PE
Indication
Name Parameter storage device alarm (control circuit board)
Description A fault occurred in parameters stored (EEPROM failure)
Check point Check for too many number of parameter write times.
Please contact your sales representative.
Corrective action
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.
Operation Panel
E.PE2
Indication
Name Parameter storage device alarm (main circuit board)
Description
A fault occurred in parameters stored (EEPROM failure)
Check point
——————
Corrective action
Please contact your sales representative.
Operation Panel
E.PUE
Indication
Name
PU disconnected
This function stops the inverter output if communication between the inverter and PU is suspended,
e.g. the operation panel and parameter unit is disconnected, when "2", "3", "16" or "17" was set in
Pr. 75 Reset selection/disconnected PU detection/PU stop selection. This function stops the inverter
Description output when communication errors occurred consecutively for more than permissible number of
retries when a value other than "9999" is set in Pr. 121 Number of PU communication retries during the
RS-485 communication with the PU connector. This function also stops the inverter output if
communication is broken for the period of time set in Pr. 122 PU communication check time interval.
· Check that the FR-DU07 or parameter unit (FR-PU04) is fitted tightly.
Check point
· Check the Pr. 75 setting.
Corrective action Fit the FR-DU07 or parameter unit (FR-PU04) securely.
Operation Panel
E.RET
Indication
Name Retry count excess
If operation cannot be resumed properly within the number of retries set, this function stops the
Description
inverter output.
Check point
Find the cause of alarm occurrence.
Corrective action
Eliminate the cause of the error preceding this error indication.
Causes and corrective actions
FR-PU04 Option slot alarm 1
FR-PU04
Fault 1
FR-PU04 Corrupt Memry
FR-PU04 Fault 14
FR-PU04 PU Leave Out
FR-PU04 Retry No Over
4
237