Chapter 6 Troubleshooting
121
Ch
ap
ter 6
No. Fault ID
Failure type
Possible causes
Solutions
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
4.set the voltage to the normal
range
5.cancel the sudden load
6.install braking unit and brake
resistor
4
Err.04
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
5
Err.05
Acceleration
overvoltage
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
6
Err.06
Deceleration
overvoltage
1.the input voltage is high
2.there is external force to
drag the motor to run when
decelerating.
3.the deceleration time is too
short
4.didn't install braking unit
and braking resistor
1.set the voltage to the normal
range
2.cancel the external force or
install braking resistor.
3.increase the deceleration time
4.install braking unit and brake
resistor
7
Err.07
Constant
speed
overvoltage
1.there is external force to
drag the motor to run when
running
2.the input voltage is high
1.cancel the external force or
install braking resistor.
2.set the voltage to the normal
range
8
Err.08
Control power
failure
The range of input voltage is
not within the specification
Adjust the voltage to the range of
the requirements of specification
9
Err.09
Under voltage
fault
1.the momentary power cut
2.the inverter's input voltage
is not within the
specification
3.the bus voltage is not
normal
4.the rectifier bridge and
buffer resistance are
abnormal
1.reset fault
2.adjust the voltage to the normal
range
3.seek for technical support