Chapter 7 Troubleshooting
186
6.the motor that is rotating is
started unexpectedly.
7.suddenly increase the load
in the process of acceleration.
8.the type selection of inverter
is small
6.select Speed Tracking
Start or restart after
stopping the motor.
7.cancel the sudden load
8.choose the inverter with
large power level
1.the short-circuit or earthing
of inverter output happens
2.the control mode is vector
and without identification of
parameters
3.the deceleration time is too
short
4.the voltage is low
5.suddenly increase the load
in the process of deceleration.
6.didn't install braking unit
and braking resistor
1.eliminate peripheral
faults
2.perform identification
for the motor parameters
3.increase the deceleration
time
4.set the voltage to the
normal range
5.cancel the sudden load
6.install braking unit and
brake resistor
Constant speed
overcurrent
1.the short-circuit or earthing
of inverter output happens
2.the control mode is vector
and without identification of
parameters
3.the voltage is low
4, whether suddenly increase
the load when running
5.the type selection of inverter
is small
1.eliminate peripheral
faults
2.perform identification
for the motor parameters
3.set the voltage to the
normal range
4.cancel the sudden load
5.choose the inverter with
large power level
1.didn't install braking unit
and braking resistor
2.the input voltage is high
3.there is external force to
drag the motor to run when
accelerating.
4.the acceleration time is too
short
1.install braking unit and
brake resistor
2.set the voltage to the
normal range
3.cancel the external force
or install braking resistor.
4.increase acceleration
time
1.the input voltage is high
2.there is external force to
drag the motor to run when
1.set the voltage to the
normal range
2.cancel the external force
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