Mitsubishi Electric 800 Series Instruction Manual page 571

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