Mitsubishi Electric FR-A800, Instruction Manual

Page: 897 / 1042

Protective functions Causes and corrective actions
FR-A800 6 - 9
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
HOLD
Name Operation panel lock
Description Operation lock is set. Operation other than STOP/RESET key is invalid. (Refer to page 5-198.)
Check point
⎯
Corrective action Press MODE key for 2 s to release the lock.
Operation panel
indication
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 5-211.)
Operation panel
indication
Er1
Name Parameter write error
Description
앫
Parameter setting was attempted while Pr. 77 "Parameter write selection" is set to disable
parameter write.
앫
Overlapping range has been set for the frequency jump.
앫
Overlapping range has been set for the adjustable 5 points V/F.
앫
The PU and inverter cannot make normal communication.
앫
IPM parameter initialization was attempted while Pr. 72 = "25".
Check point
앫
Check the Pr. 77 "Parameter write selection" setting. (Refer to page 5-203.)
앫
Check the settings of Pr. 31 to Pr. 36 (frequency jump). (Refer to page 5-312.)
앫
Check the settings of Pr. 100 to Pr. 109 (adjustable 5 points V/F). (Refer to page 5-660.)
앫
Check the connection of PU and the inverter.
앫
Check the Pr. 72 "PWM frequency selection" setting. A sine wave filter cannot be used under
PM sensorless vector control.
Operation panel
indication
Er2
Name Write error during operation
Description Parameter write was attempted while Pr. 77 = "0".
Check point
앫
Check that the inverter is stopped.
Corrective action
앫
After stopping the operation, make parameter setting.
앫
When setting Pr. 77 = "2", parameter write is enabled during operation.
(Refer to page 5-203.)