570
6. PROTECTIVE FUNCTIONS
6.4 Causes and corrective actions
6.4 Causes and corrective actions
Error message
A message regarding operational troubles is displayed. Output is not shut off.
Abbreviation LOCD
Name Password locked
Description Password function is active. Display and setting of parameters are restricted.
Check point ————
Corrective action Enter the password in Pr.297 Password lock/unlock to unlock the password function before operating. (Refer
to page 172.)
Abbreviation Er1
Name Parameter write error
Description • Parameter setting was attempted while Pr.77 Parameter write selection is set to disable parameter write.
• Overlapping range has been set for the frequency jump.
• Overlapping range has been set for the adjustable 5 points V/F.
• The PU and inverter cannot make normal communication.
Check point • Check the Pr.77 Parameter write selection setting. (Refer to page 168.)
• Check the settings of Pr.31 to Pr.36 (frequency jump). (Refer to page 255.)
• Check the settings of Pr.100 to Pr.109 (adjustable 5 points V/F). (Refer to page 544.)
• Check the connection of PU and the inverter.
Abbreviation Er2
Name Write error during operation
Description Parameter write was attempted while Pr.77 = "0".
Check point • Check that the inverter is stopped.
Corrective action • After stopping the operation, make parameter setting.
• When setting Pr.77 = "2", parameter write is enabled during operation. (Refer to page 168.)
Abbreviation Er3
Name Calibration error
Description Analog input bias and gain calibration values have been set too close.
Check point Check the settings of Pr.902, Pr.903, Pr.904, and Pr.905 (calibration functions). (Refer to page 328.)
Abbreviation Er4
Name Mode designation error
Description • Parameter setting was attempted in the External or NET operation mode while Pr.77 = "1".
• Parameter write was attempted when the command source is not at the operation panel.
Check point • Check that operation mode is PU operation mode.
• Check that the Pr.551 setting is correct.
Corrective action • After setting the operation mode to the "PU operation mode", make parameter setting. (Refer to page 204.)
• When Pr.77 = "2", parameter write is enabled regardless of the operation mode. (Refer to page 168.)
•Set Pr.551 = "2". (Refer to page 214.)
Abbreviation Er8
Name USB memory device operation error
Description • An operation command was given during the USB memory device operation.
• A copy operation (writing) was performed while the PLC function was in the RUN state.
• A copy operation was attempted for a password locked project.
Check point • Check if the USB memory device is operating.
• Check if the PLC function is in the RUN state.
• Check if the project data is locked with a password.
Corrective action • Perform the operation after the USB memory device operation is completed.
• Stop the PLC function. (Refer to page 466 and the PLC function programming manual.)
• Unlock the password of the project data using FR Configurator2. (Refer to the Instruction Manuals of FR
Configurator2 and GX Works2.)
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