Decreasing Motor Speed Fluctuation; Slip Compensation - YASKAWA VS-606V7 Series Instruction Manual

Decreasing Motor Speed Fluctuation

Slip compensation ( When n002 is set to 0 )
As the load becomes larger, motor speed is reduced and motor slip value is
increased. The slip compensating function controls the motor speed at a
constant value even if the load varies.
When inverter output current is equal to the motor rated current (n036), the
compensation frequency is added to the output frequency.
Compensation frequency = Motor rated slip (n106)
Related constants
Constants
Name
No.
n036
Motor rated current

Slip compensation

n111
gain
Motor no-load
n110
current
Slip compensation
n112
time constant
n106
Motor rated slip
* Differs depending on inverter capacity.
Notes : 1. Slip compensation is not performed in the following condition:
Output frequency < minimum output frequency (n016)
2. Slip compensation is not performed during regeneration.
3. Slip compensation is not performed when motor rated current (n036) is set to 0.0A.
86
Output current – Motor no-load current (n110)
Motor rated current
(n036)
Slip compensation gain (n111)
Unit
0.1A 0 to 150% of inverter rated current
0.0 to 2.5
0.1
0 to 99% (100%=Motor rated current
1%
n036)
0.0 to 25.5s
0.1s
When 0.0s is set, delay time becomes 2.0s
0.1Hz 0.0 to 20Hz
–
Motor no-load current (n110)
Setting range
Initial
Setting
*
0.0
*
2.0s
*