Mitsubishi Electric 800 Series Instruction Manual page 33

 Option fault
Operation panel
indication
• The inverter output is shut off when a contact failure occurs between the inverter and the plug-in option.
Description
• Appears when the switch for manufacturer setting of the plug-in option is changed.
• Check that the plug-in option is plugged into the connector securely.
Check point
• Check for excessive noise around the inverter.
• Connect the plug-in option securely.
• Take measures against noises if there are devices producing excessive electrical noises around the inverter.
Corrective action
If the problem still persists after taking the above measure, contact your sales representative.
• Set the switch on the plug-in option, which is for manufacturer setting, back to the initial setting.
• FR-E800 Instruction Manual (Function)
Reference
• Instruction Manual of each option
 Inverter output fault
Operation panel
indication
The inverter output is shut off if the inverter detects an output current fault such as an earth (ground) fault that
Description
occurred on the inverter's output side (load side).
Check point Check for an earth (ground) fault in the motor and connection cable.
Corrective action Remedy the earth (ground) fault or other fault.
 Opposite rotation deceleration fault
Operation panel
indication
The speed may not decelerate during low speed operation if the rotation direction of the speed command and
the estimated speed differ when the rotation is changing from forward to reverse or from reverse to forward
Description during torque control under Real sensorless vector control. The inverter output is shut off when overload occurs
due to the un-switched rotation direction. This protective function is not available in the initial status (V/F control).
(This function is only available under Real sensorless vector control.)
• Check that the rotation direction is not switched from forward to reverse rotation (or from reverse to forward)
Check point
during torque control under Real sensorless vector control.
• Prevent the motor from switching the rotation direction from forward to reverse (or from reverse to forward)
Corrective action during torque control under Real sensorless vector control.
• Contact your sales representative.
Reference FR-E800 Instruction Manual (Function)
 Internal circuit fault
Operation panel
indication
Description Appears when the internal circuit is faulty.
Check point ――――
Corrective action Contact your sales representative.
 Others
Indicate the status of the inverter. It is not a fault.
 No fault history
Operation panel
indication
Appears when no fault records are stored. (Appears when the fault history is cleared after the protective function
Description
has been activated.)
E.1
E.10
E.11
Sensorless Sensorless Sensorless
E.13
E.0
FR-LU08 indication Fault 1
FR-LU08 indication Fault 10
FR-LU08 indication Opst rot dtct fault
FR-LU08 indication Intrnl circuit fault
FR-LU08 indication No faults
2.5 Causes and corrective actions
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2. Protective Functions