Mitsubishi Electric 800 Series Instruction Manual page 648

Abbreviation E. 1 to E. 3
Name
Option fault
The inverter trips when a contact fault is found between the inverter and the plug-in option, or when the
Description
communication option is not connected to the connector 1.
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 properly.
Check point
• Check for excessive noise around the inverter.
• Check if the communication option is connected to the connector 2 or 3.
• Connect the plug-in option securely.
• Take measures against noises if there are devices producing excess electrical noises around the inverter.
Corrective action
• Connect the communication option to the connector 1.
• Set the switch on the plug-in option, which is for manufacturer setting, back to the initial setting. (Refer to the
Abbreviation
E.11
Name
Opposite rotation deceleration fault
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 trips 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
• Prevent the motor from switching the rotation direction from forward to reverse (or from reverse to forward)
Corrective action
• Please contact your sales representative.
Others
Indicate the status of the inverter. It is not a fault.
Abbreviation E.0
Name
No fault history
Appears when no fault records are stored. (Appears when the fault history is cleared after the protective
Description
function has been activated.)
Abbreviation RD
Name
Backup in progress
The GOT is used for backing up inverter parameters and the data used in the PLC function of inverter. (Refer
Description
to
Abbreviation WR
Name
Restoration in progress
Description
The backup data stored in the GOT is used to restore the data in the inverter. (Refer to
NOTE
• If protective functions with indication of "Fault" on the operation panel or parameter unit are activated, "ERR" appears in the
fault history of the operation panel or parameter unit.
• If faults other than the above appear, contact your sales representative.
(1 to 3 indicate connector numbers for connection of options.)
If the situation does not improve after taking the above measure, please contact your sales representative.
Instruction Manual of each option.)
Sensorless Sensorless Sensorless
during torque control under Real sensorless vector control.
during torque control under Real sensorless vector control.
page 586.)
Causes and corrective actions
FR-LU08
Fault 1 to Fault 3
FR-PU07
FR-LU08
Fault 11
FR-PU07
FR-LU08 No faults
PROTECTIVE FUNCTIONS
page 586.)
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