Causes And Corrective Actions - Mitsubishi Electric 800 Series Instruction Manual

2.5

Causes and corrective actions

 Error message
A message regarding operational troubles is displayed. Output is not shut off.
 Operation panel lock
Operation panel
indication
Description
Check point
Corrective action
Reference
 Password locked
Operation panel
indication
Description
Check point
Corrective action
Reference
 Write disable error
Operation panel
indication
Description
Check point
Reference
 Write error during operation
Operation panel
indication
Description
Check point
Corrective action
Reference
 Calibration error
Operation panel
indication
Description
Check point
Reference
 Mode designation error
Operation panel
indication
Description
Check point
Corrective action
Reference
18
2. Protective Functions
2.5 Causes and corrective actions
HOLD
Operation lock is set. Operation other than pressing the STOP/RESET key is disabled.
Press the MODE key for 2 seconds to release the lock.
FR-E800 Instruction Manual (Function)
LOCD
Password function is active. Display and setting of parameters are restricted.
Enter the password in Pr.297 Password lock/unlock to unlock the password function before operating.
FR-E800 Instruction Manual (Function)
Er1
• Parameter setting was attempted while Pr.77 Parameter write selection is set to disable parameter write.
• Overlapping range has been set for the frequency jump.
• The PU and inverter cannot make normal communication.
• Check the Pr.77 setting.
• Check the settings of Pr.31 to Pr.36 (frequency jump).
• Check the connection of PU and the inverter.
FR-E800 Instruction Manual (Function)
Er2
Parameter write was attempted while Pr.77 Parameter write selection = "0".
• Check that the inverter is stopped.
• After stopping the operation, make parameter setting.
• When setting Pr.77 = "2", parameter write is enabled during operation.
FR-E800 Instruction Manual (Function)
Er3
Analog input bias and gain calibration values have been set too close.
Check the settings of the calibration parameters C3, C4, C6, and C7 (calibration functions).
FR-E800 Instruction Manual (Function)
Er4
• Parameter setting was attempted in the External or NET operation mode while Pr.77 Parameter write selection
= "1".
• Parameter write was attempted when the command source is not at the operation panel.
• Check that the operation mode is the PU operation mode.
• Check that the Pr.551 PU mode operation command source selection setting is correct.
• After setting the operation mode to the "PU operation mode", make parameter setting.
• When Pr.77 = "2", parameter write is enabled regardless of the operation mode.
• Set Pr.551 = "4".
FR-E800 Instruction Manual (Function)
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