Causes And Corrective Actions - Mitsubishi Electric FR-HC2-7.5K Instruction Manual

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
Name
Description
Checkpoint
Corrective action
Operation Panel
Indication
Name
Description
Checkpoint
Corrective action
Operation Panel
Indication
Name
Description
Checkpoint
Corrective action
Operation Panel
Indication
Name
Description
Checkpoint
Corrective action
Operation Panel
Indication
Name
Description
Checkpoint
Corrective action
126
HOLD
Operation panel lock
Operation lock is set. Operation other than
(Refer to page 90)
Press for 2s to release the lock.
Er1
Parameter write error
 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.
 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.
 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.
rE1
Parameter read error
When a failure occurs at the operation panel side EEPROM while reading copied parameters.
 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.
rE2
Parameter write error
When a failure occurs at the operation panel side EEPROM while writing copied parameters.
Check if FWD or REV LED on the operation panel (FR-DU07-CNV) is lit or flickering.
Failure of the operation panel (FR-DU07-CNV) might be the cause. Please contact your sales representative.
rE3
Parameter verification error
 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.
Check the parameter setting of the source converter against the setting of the destination converter.
 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.
is invalid.
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