C3 Motor Slip Compensation - YASKAWA VS-616G5 Series Programming Manual

Section C: Tuning Parameters

C3 Motor Slip Compensation

C3 Motor Slip Compensation
As the load becomes larger, the motor speed is reduced and motor slip increases. The slip compensa-
tion function keeps the motor speed constant even under varying load conditions.
C3-01 Slip Compensation Gain
Setting Range:
Factory Default:
This function controls the output frequency in response to the load's torque demand. Increase the set
value in one tenth (0.1) increments when operating at low speeds; decrease the set value as the motor
speed increases.
During flux vector control, this gain compensates for motor slip causes by changes in temperature.
Normally, this setting does not have to be modified.
Note: Default factory setting will be 0.0 when parameter A1-02=0 [V/F mode]. When parameter A1-
02=2 [Open Loop Vector] or 3 [Flux Vector] the default factory setting will be 1.0.
C3-02 Slip Compensation Primary Delay Time
Setting Range:
Factory Default:
Adjust the slip compensation delay time when motor speed is unstable or speed response is slow.
Increase the set value in 10ms increments when operating at low speeds; decrease the set value as the
motor speed increases.
C3-03 Slip Compensation Limit
Sets the slip compensation limit as a percentage of motor rated slip (E2-02).
34
0.0 to 2.50
1.0
0 to 10000ms
200ms
E1-04
× C3-03
E1-06
C3-03
E1-06
Base
Frequency
Figure 17 Slip Compensation Limit Adjustment
Slip Comp Gain
Slip Comp Time
Slip Comp Limit
Output Frequency
E1-04
Maximum
Frequency
VS-616G5 Programming Manual
Open Loop Flux
V/f V/f w/PG
Vector Vector
B - B B
A - A -
A - A -