C3: Slip Compensation - YASKAWA HV600 Manual

2.4 C: Tuning
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C3: Slip Compensation

The Slip Compensation function improves the speed accuracy of an induction motor. As loads on induction motors
increase, motor slip increases and motor speed decreases. By adjusting the output frequency in accordance with the
motor load, it compensates the slip and makes the motor speed equal to the frequency reference.
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C3-01: Slip Compensation Gain
No.
Name
(Hex.)
C3-01 Slip Compensation Gain
(020F)
RUN
Note:
Correctly set these parameters before you change the slip compensation gain:
• E2-01 [Motor Rated Current (FLA)]
• E2-02 [Motor Rated Slip]
• E2-03 [Motor No-Load Current]
Use these settings to adjust this parameter as necessary:
• If the motor speed is slower than the frequency reference, increase the setting of this parameter in 0.1-unit
increments.
• If the motor speed is higher than the frequency reference, decrease the setting of this parameter in 0.1-unit
increments.
■
C3-02: Slip Compensation Delay Time
No.
Name
(Hex.)
C3-02 Slip Compensation Delay
Time
(0210)
RUN
Use these settings to adjust this parameter as necessary:
• When the speed is not stable, increase the setting.
• When the slip compensation response is too slow, decrease the setting.
■
C3-21: Motor 2 Slip Compensation Gain
No.
Name
(Hex.)
C3-21 Motor 2 Slip Compensation
Gain
(033E)
RUN
Note:
Correctly set these parameters before you change the slip compensation gain:
• E4-01 [Motor 2 Rated Current]
• E4-02 [Motor 2 Rated Slip]
• E4-03 [Motor 2 Rated No-Load Current]
Use these settings to adjust this parameter as necessary:
• If the motor speed is slower than the frequency reference, increase the setting of this parameter in 0.1-unit
increments.
• If the motor speed is higher than the frequency reference, decrease the setting of this parameter in 0.1-unit
increments.
226
V/f OLV/PM EZOLV OLV/PM
Sets the gain for the slip compensation function. Usually it is not necessary to change this setting.
V/f OLV/PM EZOLV OLV/PM
Sets the slip compensation delay time when speed is unstable or when the slip compensation
response is too slow. Usually it is not necessary to change this setting.
V/f OLV/PM EZOLV OLV/PM
Sets the gain for the motor 2 slip compensation function. Usually it is not necessary to change this
setting.
Description
Description
Description
YASKAWA TOEPYAIHV6002A HV600 Drive Programming
Default
(Range)
0.0
(0.0 - 2.5)
Default
(Range)
Determined by A1-02
(0 - 10000 ms)
Default
(Range)
0.0
(0.0 - 2.5)