9.13.6 Current Gain Level Setting
You can set the current gain level to reduce noise by adjusting the parameter for current
control inside the SERVOPACK according to the speed loop gain (Pn100). The noise
level can be reduced by decreasing the current gain level (Pn13D) from its default setting
of 2,000% (disabled). However, if the setting is decreased, the level of noise will be low-
ered, but the response characteristic of the SERVOPACK will also be reduced. Adjust the
current gain level within the range that maintains the SERVOPACK response character-
istic.
Current Gain Level
Setting
Range
Setting Unit Default Set-
ting
When Ena-
bled
Classifica-
tion
Pn13D 100 to 2,000 1% 2,000 Immediately Tuning
(applies to Speed Control and Position Control)
If the current gain level is changed, the response characteristic of the
speed loop will also change. Servo tuning must therefore be performed
again.
9.13.7 Speed Detection Method Selection
You can use the speed detection method selection to ensure smooth Servomotor speed
changes during operation. To ensure smooth motor speed changes during operation, set
Pn009 to n.1 (Use speed detection 2).
With a Linear Servomotor, you can reduce the noise level of the running motor when the
linear encoder scale pitch is large.
Parameter Function When Enabled Classification
Pn009
n. 0
(default
setting)
Use speed detection 1.
After restart Tuning
n. 1
Use speed detection 2.
If the speed detection method is changed, the response characteristic of
the speed loop will also change. Servo tuning must therefore be per-
formed again.
9.13.8 Speed Feedback Filter
You can set a first order lag filter for the speed feedback in the speed loop. This ensures
smooth changes in the feedback speed to reduce vibration. If a large value is set, it will
increase the delay and make response slower.
Sigma-7 Series SERVOPACKs
Tuning
Additional Adjustment Functions > Speed Feedback Filter
| | PROFINET Communications - SIEP YEUOC7P 02A Revision 0 | en | 399
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