124
第
十
章
Ch
ap
ter 6
Chapter 6 Troubleshooting
6-1.
Fault alarm and countermeasures
ST500 inverter system operation in the process of failure, the inverter will protect the motor
immediately to stop the output, while the inverter fault relay contact action. Inverter panel will display
the fault code, the fault code corresponding to the type of fault and common solutions refer to the
following table. List for reference only, please do not repair, transformation, if you can not get rid of
the trouble, please division or product agents to seek technical support.
No. Fault ID
Failure type
Possible causes
Solutions
1
Err.01
Inverter unit
protection
1.the short circuit of inverter
output happens
2.the wiring for the motor
and the inverter is too long
3.module overheating
4.the internal wiring of
inverter is loose
5.the main control panel is
abnormal
6.the drive panel is abnormal.
7.the inverter module is
abnormal
1.eliminate peripheral faults
2.additionally install the reactor
or the output filter
3.check the air duct is blocked or
not and the fan is working
normally or not, and eliminate
problems
4.correctly plug all cables
5.seek for technical support
2
Err.02
Acceleration
overcurrent
1.the acceleration time is too
short
2.manual torque boost or V/F
curve is not suitable
3.the voltage is low
4.the short-circuit or earthing
of inverter output happens
5.the control mode is vector
and without identification of
parameters
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
1.increase acceleration time
2.adjust manual torque boost or
V/F curve
3.set the voltage to the normal
range
4.eliminate peripheral faults
5.perform identification for the
motor parameters
6.select Speed Tracking Start or
restart after stopping the motor.
7.cancel the sudden load
8.choose the inverter with large
power level
3
Err.03
Deceleration
overcurrent
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
4
Err.04
Constant
speed
1.the short-circuit or earthing
of inverter output happens
1.eliminate peripheral faults
2.perform identification for the
