Causes And Corrective Actions - Mitsubishi Electric FR-A820-00046 Instruction Manual

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Protective functions
6.5

Causes and corrective actions

6.5.1
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
FR-A800
HOLD
Operation panel lock
Operation lock is set. Operation other than STOP/RESET key is invalid. (Refer to page 5-198.)
Press MODE key for 2 s 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
operating. (Refer to page 5-211.)
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.
IPM parameter initialization was attempted while Pr. 72 = "25".
Check the Pr. 77 "Parameter write selection" setting. (Refer to page 5-203.)
Check the settings of Pr. 31 to Pr. 36 (frequency jump). (Refer to page 5-312.)
Check the settings of Pr. 100 to Pr. 109 (adjustable 5 points V/F). (Refer to page 5-660.)
Check the connection of PU and the inverter.
Check the Pr. 72 "PWM frequency selection" setting. A sine wave filter cannot be used under
PM sensorless vector control.
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 page 5-203.)
Causes and corrective actions
"
to unlock the password function before
6 - 9

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