Mitsubishi Electric FR-F740 EC Instruction Manual page 573

Troubleshooting
Operation Panel
Indication
Name
Description
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
FR-F700 EC
Er3
Calibration error
Analog input bias and gain calibration values are too close.
Check the settings of C3, C4, C6 and C7 (calibration functions). (Refer to section 6.15.4.)
Er4
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-DU07).
Check that operation mode is "PU operation mode".
Check the Pr. 77 setting. (Refer to section 6.16.2.)
Check the Pr. 551 setting.
After setting the operation mode to the "PU operation mode", make parameter setting.
(Refer to section 6.16.2.)
After setting "2" in Pr. 72, make parameter setting.
Set Pr. 551 = "2" (initial setting). (Refer to section 6.17.3)
rE1
Parameter read error
An error occurred in the E²PROM on the operation panel side during parameter copy
reading.
—
Make parameter copy again. (Refer to section 5.10).
Check for an operation panel (FR-DU07) failure.
Please contact your sales representative.
rE2
Parameter write error
You attempted to perform parameter copy write during operation.
An error occurred in the E²PROM on the operation panel side during parameter copy
writing.
Is the FWD or REV LED of the operation panel (FR-DU07) lit or flickering?
After stopping operation, make parameter copy again. (Refer to section 5.10.)
Check for an operation panel (FR-DU07) failure.
Please contact your sales representative.
Causes and corrective actions
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