Using Proportional Control - YASKAWA SGMAH User Manual

Sigma II User's Manual
6.2.3

Using Proportional Control

If parameter Pn000.1 is set to 0 or 1 as shown below, input signal /P-CON serves as
a PI/P control changeover switch.
• PI control: Proportional/integral control.
• P control: Proportional control.
Parameter
Pn000.1 Control Method Selection
Pn000.1
Setting
Speed
0
Control
Position
1
Control
Methods for Using Proportional Control
Proportional control can be used in the following two ways.
• When operation is performed by sending speed references from the host control-
ler to the servo amplifier, the host controller can selectively use P control mode
for particular conditions only. This method can suppress overshooting and
shorten setting time. Refer to 6.2.5 Using Mode Switch for particular conditions.
• If PI control mode is used when the speed reference has a reference offset, the
motor may rotate at a very slow speed and fail to stop even if 0 is specified as a
speed reference. In this case, use P control mode to stop the motor.
Signal
Default Setting: 0
Usual speed control or position
control is selected.
Input signal /P-CON (CN1-41) is used
to select PI control or P control.
CN1-41
PI control
is open.
CN1-41
P control
is 0V
Setting
(%)
Control Mode
P or PI
control
selection
6 - 13
Chapter 6: Servo Adjustment
Application
Speed Control,
Position Control
Servo amplifier
/P-CON
CN1-41