YASKAWA SGM series User Manual page 25

4) Servopack for speed/torque control can also provide torque control as shown below.
• Using Servopack for Speed/Torque Control (Torque Control)
Position
information
Speed
reference
(Analog
voltage)
Set the user constants for Servopack to switch between the following torque control
modes:
(1) Controlling servomotor torque by torque reference
(2) Operating servomotor by switching between torque reference and speed refer-
ence
The host controller outputs a torque reference or speed reference to control the Servo-
pack.
It also receives a pulse train (position information) from the Servopack and uses it to mon-
itor the position.
Host controller
Position
monitoring
Servopack for
Torque
speed/torque
reference
control
(Analog voltage)
Torque
(current)
Position
Speed
feedback
Convert
Pulse train
Position feedback
1.1 Basic Understanding of AC Servos
Power
amplifier
Servomotor
Encoder
(Torque control I)
(Torque control II)
1
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