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131
4
PROTECTIVE FUNCTIONS
Causes and corrective actions
Operation Panel
Indication
E.PE
FR-PU07 Corrupt Memry
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.
Corrective action
Please contact your sales representative.
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
Indication
E.PE2
FR-PU07 PR storage alarm
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
Indication
E.PUE
FR-PU07 PU Leave Out
Name
PU disconnection
Description
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/
disconnected PU detection/PU stop selection. This protective function is not available in the initial setting (Pr.
75 = "14").
Checkpoint
Check that no loose point exists in the installation of FR-DU07-CNV or the parameter unit (FR-PU07).
Check the Pr. 75 setting.
Corrective action
Install FR-DU07-CNV or the parameter unit (FR-PU07) securely.
Operation Panel
Indication
E.RET FR-PU07 Retry No Over
Name
Retry count excess
Description
If operation cannot be resumed properly within the number of retries set, this function stops the converter
operation.
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
E. 6
FR-PU07
Fault 6
E. 7 Fault 7
CPU CPU fault
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.
Corrective action
Take measures against noises if there are devices producing excess electrical noises around the
converter.
Please contact your sales representative.
Operation Panel
Indication
E.8 FR-PU07 Fault 8
Name
Input power supply fault 1
Description
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.
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.
HC2.book 131 ページ ２０１２年１１月１９日 月曜日 午前１０時５２分