Causes And Corrective Actions - Mitsubishi Electric FR-F700PJ 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
HOLD
indication
Name
Operation panel lock
Description
Operation lock mode is set. Operation other than
Check point
Corrective action
Press
Operation panel
LOCD
indication
Name Password locked
Description
Password function is active. Display and setting of parameter is restricted.
Check point
Enter the password in Pr. 297 Password lock/unlock to unlock the password function before operating. (Refer to page
Corrective action
198)
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 196)
Check point
 Check the settings of Pr. 31 to Pr. 36 (frequency jump). (Refer to page 102)
 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 196)
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 188)
Operation panel
Er4
indication
Name Mode designation error
 Appears if a parameter setting is attempted in the External or NET operation mode with Pr. 77  "2".
Description
 Appears if a parameter setting is attempted when the command source is not at the operation panel.
 Check that operation mode is PU operation mode.
 Check the Pr. 77 setting. (Refer to page 196)
Check point
 Check if a parameter unit (FR-PU04/FR-PU07) is connected.
 Check the Pr. 551 setting.
 After setting the operation mode to the "PU operation mode", make parameter setting. (Refer to page 200)
 After setting Pr. 77 = "2", make parameter setting.
Corrective action
 Disconnect the parameter unit (FR-PU04/FR-PU07), and set Pr. 551 = "9999 (initial value)."
 Set Pr. 551 = "4". (Refer to page 214)
298
for 2s to release the lock.
is invalid. (Refer to page 280)
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