EM15 User’s Manual
5. Description of Function Codes
97
Diagram 5-32 Setting of multi-point V/F curve
d2-09
V/F slip compensation coefficient
Default
0.0%
Setting Range
0.0%~200.0%
This parameter is valid only for the asynchronous motor.
It can compensate the rotational speed slip of the asynchronous motor when the load of the motor increases,
stabilizing the motor speed in case of load change.
If this parameter is set to 100%, it indicates that the compensation when the motor bears rated load is the rated
motor slip. The rated motor slip is automatically obtained by the frequency inverter through calculation based on
the rated motor frequency and rated motor rotational speed in group d0.
Generally, if the motor rotational speed is different from the target speed, slightly adjust this parameter.
d2-11
V/F oscillation suppression gain
Default
40
Setting Range
0~100
The setting method for this parameter is to set as small as possible on the premise of effective oscillation
suppression, to avoid the badly effect for V/F running. When there is no oscillation of the motor, please set the
gain to 0. Only when there is obvious oscillation of the motor, you can increase the gain properly. The larger the
gain is, more obviously the effect of oscillation suppression is.
When the oscillation suppression function is used, the parameters of motor rated current and no-load current must
be set correctly, or the effect of oscillation suppression is poor.
d2-13
The voltage source of V/F separation
Default
0
Setting
Range
0
Digital setting (d2-14)
1
AI1
2
AI2
3
AI3
4
Pulse setting (HDI)
5
Multi-function
