Mitsubishi Electric FR-F800 Series Instruction Manual page 595

6.5
Causes and corrective actions
 Error message
A message regarding operational troubles is displayed. Output is not shut off.
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Operation panel
indication
Name
Description
Check point
Corrective action
594
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
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HOLD
Operation panel lock
Operation lock is set. Operation other than
Press for 2 seconds to release the lock.
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 208.)
Er1
Write disable 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.
• IPM parameter initialization was attempted while Pr.72 PWM frequency selection = "25".
• Check the Pr.77 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.
• Check the Pr.72 setting. A sine wave filter cannot be used under PM motor control.
Er2
Write error during operation
Parameter write was attempted while Pr.77 Parameter write selection = "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 the calibration parameters C3, C4, C6, and C7 (calibration functions). (Refer to
Er4
Mode designation error
• Parameter setting was attempted in the External or NET operation mode while Pr.77 Parameter write selection
= "1".
• Parameter write was attempted when the command source is not at the operation panel (FR-DU08).
• Check that the operation mode is the PU operation mode.
• Check that the Pr.551 PU mode operation command source selection 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
search engine
is invalid. (Refer to
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