Mitsubishi Electric FR-F740 EC Instruction Manual page 574

Causes and corrective actions
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Corrective action
7 - 6
rE3
Parameter verification error
Data on the operation panel side and inverter side are different.
An error occurred in the E²PROM on the operation panel side during parameter
verification.
Check for the parameter setting of the source inverter and inverter to be verified.
Press the SET key to continue verification. Make parameter verification again.
(Refer to section 5.10.2).
Check for an operation panel (FR-DU07) failure.
Please contact your sales representative.
rE4
Model error
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 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.
Use the same model (FR-F700 series) for parameter copy and verification.
Perform parameter copy read again.
Err.
Error
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 are
connected to a separate power, it may appear at turning on of the main circuit. It is not a
fault.
Turn off the RES signal.
Check the connection of the PU and inverter.
Check the voltage on the inverter's input side.
Troubleshooting