YASKAWA SGD7S-R70A20A023F40B, Product Manual

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3.4 Changing from Torque Control to Pressure Feedback Control
3.4.1 Mode 2 Operation
3-6
3.4 Changing from Torque Control to Pressure Feedback Control
You can select from two modes to change from torque control to pressure feedback control:
mode 1 and mode 2. The mode is set in Pn458 = n.

X (Pressure Feedback Control Mode
Selection Switch).
However, if the pressure feedback type is set to pressure feedback control 2 (Pn458 =
n.

1

), the setting in Pn458 = n.

X is ignored and mode 2 operation is used.
3.4.1 Mode 2 Operation
In mode 2, changing from torque control to pressure feedback control is performed according
to Pn44C (Pressure Feedback Enable Level) and Pn45A (Pressure Feedback Disable Level).
Note: 1. The area shaded in gray in the above diagram is the area in which pressure feedback control is enabled.
2. If chattering occurs in the pressure, mode 2 can be selected for pressure feedback control to enable stably
changing to pressure feedback control.
3.4.2 Mode 1 Operation
In mode 1, changing from torque control to pressure feedback control is performed according
to Pn44C (Pressure Feedback Enable Level).
Note: The area shaded in gray in the above diagram is the area in which pressure feedback control is enabled.
Parameter Meaning When Enabled Classification
Pn458
n.

0 Set mode 1.
After restart Setup
n.

1
(default setting)
Set mode 2.
Pressure Feedback Enable Level
Pn44C Setting Range Setting Unit Default Setting When Enabled Classification
0 to 10,000 0.01% 1000 Immediately Setup
Pressure Feedback Disable Level
Pn45A Setting Range Setting Unit Default Setting When Enabled Classification
0 to 10,000 0.01% 1000 Immediately Setup
Torque
Torque
Time
Pre ss ure
Pre ss ure feedback control s tarting pre ss ure
(Pre ss ure Feedback Enable Level (Pn44C))
Pre ss ure Feedback Di s able Level (Pn45A)
Pre ss ing pre ss ure
0
Torque control Pre ss ure feedback control Po s ition control
Control mode
Pn44C
Pressure Feedback Enable Level
Setting Range Setting Unit Default Setting When Enabled Classification
0 to 10,000 0.01% 1000 Immediately Setup
Torque
Time
Pre ss ure
Pre ss ure feedback control
s tarting pre ss ure
(Pre ss ure Feedback Enable Level)
Pre ss ing pre ss ure
0
Torque control Pre ss ure feedback control Po s ition control
Control mode