YASKAWA SGMAH, User Manual

Page: 242 / 488

Sigma II User’s Manual Chapter 6: Servo Adjustment
6 - 14
6.2.4 Setting Speed Bias
The settling time for positioning can be reduced by assigning bias to the speed
reference block in the servo amplifier. To assign bias, use the following constants.
Set the parameters to shorten the time required for positioning according to the
application.
The bias increment width (Pn108) is expressed as an error pulse width that
determines the time in which bias input (Pn107) takes effect. The bias input is ON if
the error pulse width exceeds the value set in Pn108.
Parameter Signal
Setting
(rpm)
Application
Pn107 Bias
Setting Range: 0 to 450
Default Setting: 0
Position Control
Pn108 Bias Addition Width
Setting Range: 0 to 250
Default Setting: 7
Position Control
Error pulse
Internal speed reference
Pn107
Bias increment width
Pn108