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Causes and corrective actions
5
PROTECTIVE FUNCTIONS
Operation Panel
Indication
Er4
Name
Mode designation error
Description
· Appears if a parameter setting is attempted in the External or NET operation mode with Pr. 77 ≠ "2".
· Appears if a parameter setting is attempted when the command source is not at the operation panel. (FR-
DU07).
Check point
· Check that operation mode is "PU operation mode".
· Check the Pr. 77 setting. (Refer to page 307.)
· Check the Pr. 551 setting.
Corrective action
· After setting the operation mode to the "PU operation mode", make parameter setting. (Refer to page
307.)
· After setting Pr. 77 = "2", make parameter setting.
·Set Pr.551 = "2 (initial value)". (Refer to page 322.)
Operation Panel
Indication
rE1
Name
Parameter read error
Description
An error occurred in the EEPROM on the operation panel side during parameter copy reading.
Check point
--------------
Corrective action
· Make parameter copy again. (Refer to page 397.)
· Check for an operation panel (FR-DU07) failure. Please contact your sales representative.
Operation Panel
Indication
rE2
Name
Parameter write error
Description
· You attempted to perform parameter copy write during operation.
· An error occurred in the EEPROM on the operation panel side during parameter copy writing.
Check point
Is the FWD or REV LED of the operation panel (FR-DU07) lit or flickering?
Corrective action
· After stopping operation, make parameter copy again. (Refer to page 397.)
· Check for an operation panel (FR-DU07) failure. Please contact your sales representative.
Operation Panel
Indication
rE3
Name
Parameter verification error
Description
· Data on the operation panel side and inverter side are different.
· An error occurred in the EEPROM on the operation panel side during parameter verification.
Check point Check for the parameter setting of the source inverter and inverter to be verified.
Corrective action
· Press to continue verification.
Make parameter verification again. (Refer to page 398.)
· Check for an operation panel (FR-DU07) failure. Please contact your sales representative.
Operation Panel
Indication
rE4
Name
Model error
Description
· A different model was used for parameter write and verification during parameter copy.
· When parameter copy write is stopped after parameter copy read is stopped
Check point
· Check that the verified inverter is the same model.
· Check that the power is not turned OFF or an operation panel is not disconnected, etc. during
parameter copy read.
Corrective action
· Use the same model (FR-A700 series) for parameter copy and verification.
· Perform parameter copy read again.
Operation Panel
Indication
Err.
Description
· The RES signal is on
· The PU and inverter cannot make normal communication (contact fault of the connector)
· When the voltage drops in the inverter's input side.
· When the control circuit power (R1/L11, S1/L21) and the main circuit power (R/L1, S/L2, T/L3) are
connected to a separate power, it may appear at turning ON of the main circuit. It is not a fault.
Corrective action
· Turn OFF the RES signal.
· Check the connection of the PU and inverter.
· Check the voltage on the inverter's input side.