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Causes and corrective actions
4.4 Causes and corrective actions
(1) Error message
A message regarding operational troubles is displayed. The converter continues its operation.
Operation Panel
Indication
HOLD
Name
Operation panel lock
Description
Operation lock is set. Operation other than is invalid.
(Refer to page 90)
Checkpoint
—————
Corrective action
Press for 2s to release the lock.
Operation Panel
Indication
Er1
Name
Parameter write error
Description
When you attempted to make parameter setting when Pr. 77 Parameter write selection has been set to
disable parameter write.
When the PU and the converter cannot make normal communication.
When you attempted to set a parameter, of which setting cannot be changed during the converter
operation.
Checkpoint
Check if parameter writing is attempted while Pr. 77 Parameter write selection = "1".
Check for a connection failure between the PU and the converter.
Check that the converter is not operating.
Corrective action
Perform parameter writing by setting Pr. 77 Parameter write selection = "2".
Check the connection of the PU and the converter.
After stopping the operation, make parameter setting.
Operation Panel
Indication
rE1
Name
Parameter read error
Description
When a failure occurs at the operation panel side EEPROM while reading copied parameters.
Checkpoint
—————
Corrective action
Perform parameter copy again. (Refer to page 121)
Failure of the operation panel (FR-DU07-CNV) might be the cause. Please contact your sales
representative.
Operation Panel
Indication
rE2
Name
Parameter write error
Description
When a failure occurs at the operation panel side EEPROM while writing copied parameters.
Checkpoint
Check if FWD or REV LED on the operation panel (FR-DU07-CNV) is lit or flickering.
Corrective action
Failure of the operation panel (FR-DU07-CNV) might be the cause. Please contact your sales representative.
Operation Panel
Indication
rE3
Name
Parameter verification error
Description
When the data in the converter are different from the data in the operation panel.
When a failure occurs at the operation panel side EEPROM during parameter verification.
Checkpoint
Check the parameter setting of the source converter against the setting of the destination converter.
Corrective action
Continue the verification by pressing .
Perform parameter verification again. (Refer to page 122)
Failure of the operation panel (FR-DU07-CNV) might be the cause. Please contact your sales
representative.
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