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Operation Panel
Indication
Name
Parameter storage device fault (control circuit board)
Description
Stops the converter operation if a fault occurred in the parameter stored. (EEPROM fault)
Checkpoint
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" to Pr. 342 to enable RAM
write. Note that powering OFF returns the converter to the status before RAM write.
Operation Panel
E.PE2
Indication
Name
Parameter storage device fault (main circuit board)
Description
Stops the converter operation if a fault occurred in the parameter stored. (EEPROM fault)
Checkpoint
Corrective action
Please contact your sales representative.
Operation Panel
E.PUE
Indication
Name
PU disconnection
This function stops the converter operation if communication between the converter and PU is suspended,
e.g. the parameter unit is disconnected, when "2", "3", "16" or "17" was set in Pr. 75 Reset selection/
Description
disconnected PU detection/PU stop selection. This protective function is not available in the initial setting (Pr.
75 = "14").
Check that no loose point exists in the installation of FR-DU07-CNV or the parameter unit (FR-PU07).
Checkpoint
Check the Pr. 75 setting.
Corrective action
Install FR-DU07-CNV or the parameter unit (FR-PU07) 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 converter
operation.
Description
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.
Checkpoint
Find the cause of the fault occurrence.
Corrective action
Eliminate the cause of the fault preceding this fault indication.
Operation Panel
Indication
Name
CPU fault
Description
Stops the converter operation if the communication fault of the built-in CPU occurs.
Checkpoint
Check for devices producing excess electrical noises around the converter.
Take measures against noises if there are devices producing excess electrical noises around the
Corrective action
converter.
Please contact your sales representative.
Operation Panel
Indication
Name
Input power supply fault 1
When a fault is detected in the power supply frequency.
When the phase detection cannot be performed for the normal power supply.
When an overvoltage occurs during power failure or at an input phase loss.
Description
When the power supply amplitude changes suddenly.
When any of the above occurs, it is regarded as a power supply fault, and the converter operation and the
inverter output are stopped.
Checkpoint
Check the power source and the wiring.
Corrective action
Perform wiring correctly.
E.PE
E. 6
E. 7
CPU
E.8
Causes and corrective actions
FR-PU07
Corrupt Memry
FR-PU07
PR storage alarm
—————
FR-PU07
PU Leave Out
FR-PU07
Retry No Over
FR-PU07
FR-PU07
Fault 6
Fault 7
CPU fault
Fault 8
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