Causes and corrective actions Troubleshooting
7 - 4
7.2 Causes and corrective actions
Error message
A message regarding operational troubles is displayed. Output is not shutoff.
Operation panel
indication
HOLD
Name Operation panel lock
Description
Operation lock mode is set. Operation other than STOP/RESET is made invalid. (Refer to section
4.3.4.)
Check point —
Corrective action Press the MODE key for 2s to release lock.
Operation panel
indication
LOCd
Name Password locked
Description Password function is active. Display and setting of parameter is restricted.
Check point —
Corrective action
Enter the password in Pr. 297 "Password lock/unlock" to unlock the password function before
operating. (Refer to section 6.17.5.)
Operation panel
indication
Er1
Name Write disable error
Description
1) You attempted to make parameter setting when Pr. 77 Parameter write selection has been set
to disable parameter write.
2) Frequency jump setting range overlapped.
3) The PU and inverter cannot make normal communication.
Check point
1) Check the setting of Pr. 77 "Parameter write selection". (Refer to section 6.17.2.)
2) Check the settings of Pr. 31 to 36 (frequency jump). (Refer to section. 6.4.2.)
3) Check the connection of the PU and inverter.
Operation panel
indication
Er2
Name Write error during operation
Description
When parameter write was performed during operation with a value other than "2" (writing is
enabled independently of operation status in any operation mode) is set in Pr. 77 and the STF
(STR) is on.
Check point
1) Check the Pr. 77 setting. (Refer to section 6.17.2.)
2) Check that the inverter is not operating.
Corrective action
1) Set "2" in Pr. 77.
2) After stopping operation, make parameter setting.
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