not accelerate.
/The acceleration
time is too long.
The frequency command value is low.
Set an appropriate value.
Reduce the load and increase the
acceleration time. Check the
The acceleration time is too long.
Change the acceleration time.
The combined values of the motor
properties and the inverter parameter are
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
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.
rotation is
different from the
The V/F pattern is set incorrectly.
Set a V/F pattern that is suitable for the
motor specification.
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
Replace the inverter with a model with
increased capacity.
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.
inverter is in
operation, a
control unit
malfunctions or
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.
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