Adjustment Example - YASKAWA SGD7S series Product Manual

3.4.2

Adjustment Example

Pn193 Adjustment Example
The effects of Pn193 (Less-Deviation Control 1 Feedforward Filter Time Constant) are shown
below.
If vibration or noise occurs during operation, increase the setting of Pn193 to reduce vibration
and noise. However, overshooting may increase when you do so.
Before Adjustment ： Pn193 = 30 (0.3 ms)
Position
reference
speed
Torque reference
Position
deviation
/COIN
Pn191 Adjustment Example
The effects of Pn191 (Less-Deviation Control 1 Feedforward Gain) are shown below.
If the setting of Pn191 is decreased, overshooting decreases.
Before Adjustment ： Pn191 = 1000 (100%)
Position
reference
speed
Torque
reference
Position
deviation
/COIN
Vibration or
noise during
operation
100 200 300 400 500
Time (ms)
100 200 300 400 500
Time (ms)
3.4 Adjusting Less-Deviation Control 1
3.4.2 Adjustment Example
After Adjustment ： Pn193 = 80 (0.8 ms)
Overshooting
increases.
Position
reference
speed
Torque
reference
Position
deviation
/COIN
100 200 300
Time (ms)
After Adjustment ： Pn191 = 900 (90%)
Position
reference
speed
Torque
reference
Position
deviation
/COIN
100 200 300
Time (ms)
Vibration or noise
during operation
decreases.
400 500
Overshooting
decreases.
400 500
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