Causes And Corrective Actions - Mitsubishi Electric FR-A700 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
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Operation Panel
Indication
Name
Description
Check point
Corrective action
400
HOLD
Operation panel lock
Operation lock mode is set. Operation other than
Press for 2s to release lock.
Er1
Write disable error
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. Adjustable 5 points V/F settings overlapped
4. The PU and inverter cannot make normal communication
1. Check the setting of Pr. 77 Parameter write selection (Refer to page 305.)
2. Check the settings of Pr. 31 to 36 (frequency jump). (Refer to page 158.)
3. Check the settings of Pr. 100 to Pr. 109 (adjustable 5 points V/F). (Refer to page 165.)
4. Check the connection of the PU and inverter.
Er2
Write error during operation
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.
1. Check the Pr. 77 setting. (Refer to page 305.)
2. Check that the inverter is not operating.
1. Set "2" in Pr. 77.
2. After stopping operation, make parameter setting.
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 page 289.)
Er4
Mode designation error
You attempted to make parameter setting in the NET operation mode when Pr. 77 is not "2".
1. Check that operation mode is "PU operation mode".
2. Check the Pr. 77 setting. (Refer to page 305.)
1. After setting the operation mode to the "PU operation mode", make parameter setting. (Refer to page
305.)
2. After setting "2" in Pr. 77, make parameter setting.
is made invalid. (Refer to page 389.)
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