Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации

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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 to unlock the password function before operating. (Refer to
section 6.16.5.)
Operation Panel
Indication
Er1
Name Write disable error
Description
You attempted to make parameter setting when Pr. 77 "Parameter write selection" has
been set to disable parameter write.
Frequency jump setting range overlapped.
The PU and inverter cannot make normal communication.
Check point
Check the setting of Pr. 77 "Parameter write selection". (Refer to section 6.16.2.)
Check the settings of Pr. 31 to 36 (frequency jump). (Refer to section. 6.3.2.)
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
Check the Pr. 77 setting. (Refer to section 6.16.2.)
Check that the inverter is not operating.
Corrective action
Set "2" in Pr. 77.
After stopping operation, make parameter setting.