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Mitsubishi Electric FR-F720P-0.75K Instruction Manual Page 135

Fr-f700p series.
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Causes and corrective actions
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
Operation Panel
Indication
Name
Description
Check point
Corrective action
128
E.PE
Parameter storage device fault (control circuit board)
Trips when a fault occurred in the parameter stored. (EEPROM 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.
E.PE2
Parameter storage device fault (main circuit board)
Trips when a fault occurred in the parameter stored. (EEPROM failure)
——————
Please contact your sales representative.
E.PUE
PU disconnection
· 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 protective function is not available in
the initial setting (Pr. 75 = "14").
· This function stops the inverter 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 stops the inverter output if communication is broken for the period of time set in Pr. 122
PU communication check time interval during the RS-485 communication with the PU connector.
· Check that the FR-DU07 or parameter unit (FR-PU04/FR-PU07) is fitted tightly.
· Check the Pr. 75 setting.
Fit the FR-DU07 or parameter unit (FR-PU04/FR-PU07) securely.
E.RET
Retry count excess
If operation cannot be resumed properly within the number of retries set, this function trips the inverter.
This function is available only when Pr. 67 Number of retries at fault occurrence is set. When the initial
value (Pr. 67 = "0") is set, this protective function is not available.
Find the cause of fault occurrence.
Eliminate the cause of the fault preceding this error indication.
E. 5
E. 6
E. 7
E.CPU
CPU fault
Stops the inverter output if the communication fault of the built-in CPU occurs.
Check for devices producing excess electrical noises around the inverter.
· Take measures against noises if there are devices producing excess electrical noises around the
inverter.
· Please contact your sales representative.
FR-PU04
Corrupt Memry
FR-PU07
FR-PU04
Fault 14
FR-PU07
PR storage alarm
FR-PU04
PU Leave Out
FR-PU07
FR-PU04
Retry No Over
FR-PU07
Fault 5
Fault 6
FR-PU04
FR-PU07
Fault 7
CPU Fault

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