LSIS 6731001500, User Manual

Page: 585 / 659

Troubleshooting
572
Type Cause Remedy
not accelerate.
/The
acceleration
time is too long.
The load is too high.
Reduce the load and increase the
acceleration time. Check the
mechanical brake status.
The acceleration time is too long. Change the acceleration time.
The combined values of the motor
properties and the inverter parameter
are incorrect.
Change the motor related
parameters.
The stall prevention level during
acceleration is low.
Change the stall prevention level.
The stall prevention level during
operation is low.
Change the stall prevention level.
Motor speed
varies during
operation.
There is a high variance in load.
Replace the motor and inverter with
models with increased capacity.
The input voltage varies. Reduce input voltage variation.
Motor speed variations occur at a
specific frequency. Adjust the output frequency to avoid
a resonance area.
The motor
rotation is
different from
the setting.
The V/F pattern is set incorrectly.
Set a V/F pattern that is suitable for
the motor specification.
The motor
deceleration
time is too long
even with
Dynamic Braking
(DB) resistor
connected.
The deceleration time is set too long. Change the setting accordingly.
The motor torque is insufficient.
If motor parameters are normal, it is
likely to be a motor capacity fault.
Replace the motor with a model with
increased capacity.
The load is higher than the internal
torque limit determined by the rated
current of the inverter.
Replace the inverter with a model
with increased capacity.
While the
inverter is in
operation, a
control unit
malfunctions or
noise occurs.
Noise occurs due to switching inside the
inverter.
Change the carrier frequency to the
minimum value.
Install a micro surge filter in the
inverter output.