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Causes And Corrective Actions - Mitsubishi Electric FR-E720-0.1K(SC) Instruction Manual

Fr-e700 series.
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Causes and corrective actions

5.3
Causes and corrective actions
(1) Error message
A message regarding operational troubles is displayed. Output is not shutoff.
Operation panel
HOLD
indication
Name
Operation panel lock
Description
Operation lock mode is set. Operation other than
Check point
Corrective action
Press
LOCd
Operation panel
indication
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 page 191).
.....
Specifications differ according to the date assembled. Refer to page 338 to check the SERIAL number.
Operation panel
Er1
indication
Name
Write disable error
You attempted to make parameter setting when Pr. 77 Parameter write selection has been set to disable parameter write.
Description
Frequency jump setting range overlapped.
The PU and inverter cannot make normal communication.
Check the setting of Pr. 77 Parameter write selection. (Refer to page 187).
Check point
Check the settings of Pr. 31 to Pr. 36 (frequency jump). (Refer to page 97)
Check the connection of the PU and inverter.
Operation panel
Er2
indication
Name
Write error during operation
When parameter write was performed during operation with a value other than "2" (writing is enabled independently
Description
of operation status in any operation mode) is set in Pr. 77 and the STF (STR) is ON.
Check the Pr. 77 setting. (Refer to page 187).
Check point
Check that the inverter is not operating.
Set "2" in Pr. 77.
Corrective action
After stopping operation, make parameter setting.
Operation panel
Er3
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 179).
292
for 2s to release lock.
is invalid. (Refer to page 274)
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