Mitsubishi Electric FR-F820-04750 Instruction Manual page 745

Protective functions
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
Operation panel
indication
Name
Description
Check point
Corrective action
FR-F800
E.PE
Parameter storage device fault (control circuit board)
The inverter trips if a fault occurs in the parameter stored. (EEPROM failure)
Check for too many numbers of parameter write times.
Please contact your sales representative.
Set "1" in Pr. 342 "Communication EEPROM write selection" (write to RAM) for the operation
which requires frequent parameter writing via communication, etc. Note that writing to RAM
goes back to the initial status at power OFF.
E.PUE
PU disconnection
The inverter trips if communication between the inverter and PU is suspended, e.g. the
operation panel or parameter unit is disconnected, when the disconnected PU
disconnection function is valid in Pr. 75 "Reset selection/disconnected PU detection/PU stop
selection".
The inverter trips if communication errors occurred consecutively for more than permissible
number of retries when Pr. 121 "Number of PU communication retries" ≠ "9999" during the
RS-485 communication.
The inverter trips if communication is broken within the period of time set in Pr. 122 "PU
communication check time interval" during the RS-485 communication via the PU
connector.
Check that the operation panel or the parameter unit is connected properly.
Check the Pr. 75 setting.
Fit the operation panel or the parameter unit securely.
E.RET
Retry count excess
The inverter trips if the operation cannot be resumed properly within the number of retries set in
Pr. 67 "Number of retries at fault occurrence".
Find the cause of the fault occurrence.
Eliminate the cause of the error preceding this error indication.
E.PE2
Parameter storage device fault (main circuit board)
The inverter trips if a fault occurs in the parameter stored. (EEPROM failure)
⎯
Please contact your sales representative.
Causes and corrective actions
FR-LU08 Corrupt Memory
FR-LU08 PU disconnection
FR-LU08 Retry count excess
FR-LU08 PR storage alarm
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