LSIS LSLV-S100 User Manual

Troubleshooting
388
Type
Cause
Remedy
The motor fan has stopped or the fan is
obstructed with debris.
Check the motor fan and remove any
foreign objects.
The motor stops
during
acceleration or
when
connected to
load.
The load is too high.
Reduce the load.
Replace the motor and the inverter
with models with capacity appropriate
for the load.
The motor does
not accelerate.
/The
acceleration
time is too long.
The frequency command value is low.
Set an appropriate value.
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.
Starting torque is insufficient.
Change to vector control operation
mode. If the fault is still not corrected,
replace the inverter with a model with
increased capacity.
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.
Operation is
difficult in
underload
applications.
The carrier frequency is too high.
Reduce the carrier frequency.
Over-excitation has occurred due to an
inaccurate V/F setting at low speed.
Reduce the torque boost value to
avoid over-excitation.

LSIS LSLV-S100 Specifications

General

Brand	LSIS
Model	LSLV-S100
Category	Controller
Language	English