Goodrive350-19 series VFD for crane
Troubleshooting
-393-
8.6.8 Overcurrent
Motor stalls during
ACC
Whether the ACC
time is too short?
If it is a VFD fault or
interference, contact our
company
Overcurrent
If it is a VFD fault or
interference, contact
our company
Whether parameter
autotuning is
performed?
Modify the torque
boost
Whether the
torque boost
is too high?
过电流
Whether a special
motor is used?
Reduce the inertia of
the load and
increase the capacity
of the VFD
Whether it is V/F
control?
Contact our
company
Whether the load
torque is too large?
Use larger cables, shorten the
wiring distance, adjust the voltage
drop of the output reactor, etc.
Whether the load
or inertia is too
large?
Increase the ACC
time
Check the voltage of the
terminals of the motor with a
multimeter. Whether the voltage
is within the defined range?
Reduce the torque of
the load and
increase the capacity
of the VFD
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No
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No
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No
8.7 Countermeasures on common interference
8.7.1 Interference on meter switches and sensors
Interference phenomenon
Pressure, temperature, displacement, and other signals of a sensor are collected and displayed by a
human-machine interaction device. The values are incorrectly displayed as follows after the VFD is
started:
1. The upper or lower limit is wrongly displayed, for example, 999 or -999.
2. The display of values jumps (usually occurring on pressure transmitters.
3. The display of values is stable, but there is a large deviation, for example, the temperature is
dozens of degrees higher than the common temperature (usually occurring on thermocouples).
4. A signal collected by a sensor is not displayed but functions as a drive system running feedback
signal. For example, the VFD is expected to decelerate when the upper pressure limit of the