Mitsubishi Electric FR-A701 Instrucion Manual page 162

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
reverse to forward during torque control under real sensorless vector control. At this time, the inverter
Description
output is stopped if the rotation direction will not change, causing overload.
This protective function does not function in the initial status (V/F control). (It functions 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 error
Description Stop the inverter output when an internal circuit fault occurred.
Corrective action
Please contact your sales representative.
Operation Panel
Indication
Name Converter circuit fault
· When a fault occurs in the peripheral circuit of the regeneration converter CPU
· When a fault occurs in the control power supply circuit.
Description
· When a fault occurs in the inrush current limit circuit.
If any of the above conditions applied, it is judged as converter circuit fault and the inverter output is
stopped.
Check point
Check for devices producing excess electrical noises around the inverter.
· Take measures against noises if there are devices producing excess electrical noises around the
Corrective action
inverter.
· 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 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
E.15
Causes and corrective actions
FR-PU04
Fault 11
FR-PU07
FR-PU04
Fault 13
FR-PU07
FR-PU04
Fault 15
FR-PU07
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