Speed Control; Zero-Clamp Speed Control - YASKAWA SGM series User Manual

Cn-01
Setting
Bit B Bit A

Speed Control

This is normal speed control.
D Speed reference is input from V-REF
(1CN-3).
D P-CON (1CN-15) signal is used to switch
between P control and PI control.
0 0 0 0
1CN-15 is
open
1CN-15 is
at 0 V
D Torque reference input T-REF (1CN-1)
cannot be used.

Zero-clamp Speed Control

This speed control allows the zero-clamp
function to be set when the motor stops.
D Speed reference is input from V-REF
(1CN-3).
D P-CON (1CN-15) signal is used to turn the
zero-clamp function ON or OFF.
0 0 1 1
1CN-15 is
open
1CN-15 is
at 0 V
D Torque reference input T-REF (1CN-1)
cannot be used.
1 0 Torque control I
1 1 Torque control II
For torque control, refer to 3.2.7 Using Torque Control.
3.2 Setting User Constants According to Host Controller
Control Mode Control Mode
PI control
P control
Turns zero-clamp
function OFF
Turns zero-clamp
function ON
SGDA Servopack
Speed
reference
P/PI
changeover
SGDA Servopack
Speed
reference
Zero-clamp
Zero-clamp is performed when
the following two conditions
are met:
Condition 1: P-CON is turned
ON.
Condition 2: Motor speed
drops below the preset value.
Preset value: Cn-0F (ZCLVL)
67
3