Mitsubishi Electric FR-A800 Series Instruction Manual page 800

Operation panel
indication
Name
Description
Check point
Corrective action
 Others
Indicate the status of the inverter. It is not a fault.
Operation panel
indication
Name
Description
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Operation panel
indication
Name
Description
NOTE
• If protective functions with indication of "Fault" on the FR-LU08 or FR-PU07 are activated, "ERR" appears in the fault history
of the FR-LU08 or FR-PU07.
• If faults other than the above appear, contact your sales representative.
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E.11
Sensorless Sensorless Sensorless
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
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)
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)
during torque control under Real sensorless vector control.
• Contact your sales representative.
E.0
No fault history
Appears when no fault records are stored. (Appears when the fault history is cleared after the protective function
has been activated.)
EV
24 V external power supply operation
Blinks when the main circuit power supply is off and the 24 V external power supply is being input.
• Power is supplied from a 24 V external power supply.
• Turning ON the power supply (main circuit) of the inverter clears the indication.
• If the indication is still displayed after turning ON of the power supply (main circuit) of the inverter, the power
supply voltage may be low, or the jumper between terminals P/+ and P1 may be disconnected.
RD
Backup in progress
The GOT is used for backing up inverter parameters and the data used in the PLC function of inverter. (Refer to
page 702.)
WR
Restoration in progress
The backup data stored in the GOT is used to restore the data in the inverter. (Refer to
search engine
FR-LU08 indication Opst rot dtct fault
FR-LU08 indication No faults
FR-LU08 indication —
FR-LU08 indication Rd
FR-LU08 indication WR
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
1
2
3
4
5
6
7
8
9
10
page 702.)
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