Mitsubishi Electric FR-A720-0.4K Instruction Manual page 428

Operation Panel
Indication
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
Description
reverse to forward during torque control under Real sensorless vector control. At this time, the inverter
output is stopped if the rotation direction will not change, causing overload. This fault is not available in
the initial status (V/F control). (It is available only during Real sensorless vector control.)
Check that the rotation direction is not switched from forward to reverse rotation (or from reverse to
Check point
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
Corrective action
forward) during torque control under Real sensorless vector control.
· Please contact your sales representative.
Operation Panel
Indication
Name
Internal circuit fault
Description
Stop the inverter output when an internal circuit fault occurred.
Corrective action
Please contact your sales representative.
CAUTION
• If protective functions of E.ILF, E.PTC, E.PE2, E.EP, E.OD, E.CDO, E.IOH, E.SER, E.AIE, E.USB are activated when using the
FR-PU04, "Fault 14" appears.
Also when the faults history is checked on the FR-PU04, the display is "E.14".
• If faults other than the above appear, contact your sales representative.
E.11
E.13
Causes and corrective actions
FR-PU04
Fault 11
FR-PU07
FR-PU04
Fault 13
FR-PU07
5
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