KE300A Inverter Parameter Description
93
P3-09
V/F slip compensation gain
Factory default
0.0%
Setting range
0% ~ 200.0%
It is valid only for V/F control.
Setting this parameter can compensate the slip of motor speed caused by the load increases, and makes
the motor speed stably when the load changes.
V/F slip compensation gain set to 100% means the slip compensation of the motor with rated load is the
motor rated slip, which can be calculated according to motor rated power and motor rated speed
automatically.
Slip gain adjustment can refer to the following principle: When the load is rated load, the motor speed is
basically the same as the target speed. When the values are different, please adjust this gain properly.
P3-10
V/F over-excitation gain
Factory default
64
Setting range
0 ~ 200
During deceleration, over excitation control can suppress bus voltage increase, avoid over voltage fault.
The bigger over excitation gain is, the better suppression result is.
For the application which over voltage fault happens frequently during deceleration, the over excitation
gain needs to be increased. But the current would be increased if the over excitation is too bigger, so you
need to set the suitable over excitation gain.
For the small inertia situation, voltage doesn’t increase during motor deceleration, please set over
excitation gain to 0. For the application with braking resistor, please also set over excitation gain to 0.
P3-11
V/F oscillation suppression
gain
Factory default
Model depend
Setting range
0 ~ 100
Set the gain as small as possible on the premise that there is effective oscillation suppression measure,
which can avoid the affect causing to VF running. Set the gain to 0 when the motor has no oscillation. Only
when the motor has obvious oscillation, this gain can be increased properly. The bigger the gain is, the
better oscillation suppression result will be.
P3-12
V/F oscillation suppression
mode
Factory default
0
Setting range
0 ~ 1
When using this function, please make sure the motor rated current and no-load current parameters are
accurate, otherwise the V/F oscillation suppression result would be not good.
