Causes And Corrective Actions - Mitsubishi F700 Series Instruction Manual

Causes and corrective actions

5.3 Causes and corrective actions

(1) Error Message
A message regarding operational troubles is displayed. Output is not shut off.
Operation Panel
Indication
Name
Operation panel lock
Description
Operation lock mode is set. Operation other than
Check point
Corrective action
Press
Operation panel
indication
Name Password locked
Description
Password function is active. Display and setting of parameter is restricted.
Check point
Enter the password in Pr. 297 Password lock/unlock to unlock the password function before operating.
Corrective action
(Refer to page 187).
Operation Panel
Indication
Name
Write disable error
 You attempted to make parameter setting when Pr. 77 Parameter write selection has been set to disable
 Frequency jump setting range overlapped.
Description
 Adjustable 5 points V/F settings overlapped
 PU and inverter cannot make normal communication
 Check the setting of Pr. 77 Parameter write selection (Refer to page 184.)
 Check the settings of Pr. 31 to 36 (frequency jump). (Refer to page 81.)
Check point
 Check the settings of Pr. 100 to Pr. 109 (Adjustable 5 points V/F). (Refer to page 85.)
 Check the connection of PU and inverter.
Operation Panel
Indication
Name
Write error during operation
When parameter write was performed during operation with a value other than "2" (writing is enabled
Description
independently of operating status in any operation mode) is set in Pr. 77 and the STF (STR) is ON.
 Check the Pr. 77 setting. (Refer to page 184.)
Check point
 Check that the inverter is not operating.
 Set "2" in Pr. 77.
Corrective action
 After stopping operation, make parameter setting.
Operation Panel
Indication
Name Calibration error
Description Analog input bias and gain calibration values are too close.
Check point
Check the settings of C3, C4, C6 and C7 (calibration functions). (Refer to page 172.)
Operation Panel
Indication
Name Mode designation error
 You attempted to make parameter setting in the NET operation mode when Pr. 77 is not "2".
 If a parameter write was performed when the command source is not at the operation panel (FR-
Description
 Check that operation mode is "PU operation mode".
 Check the Pr. 77 setting. (Refer to page 184.)
Check point
 Check the Pr. 551 setting.
 After setting the operation mode to the "PU operation mode", make parameter setting. (Refer to page 184.)
 After setting "2" in Pr. 77, make parameter setting.
Corrective action
 Set Pr.551 = "2 (initial setting)". (Refer to page 199.)
330
HOLD
for 2s to release lock.
LOCD
Er1
parameter write.
Er2
Er3
Er4
DU07).
is invalid. (Refer to page 313.)
- ------- ------
--- --- ---- --- -