Yaskawa MP940 - Manual (Page 414)

Motion Control
11.2.3 Torque Control Mode
11-12
11.2.3 Torque Control Mode
„ Overview
This mode is used to generate a constant torque, regardless of the speed.
Select this mode to keep the metal mold of a plastic molding machine, such as an injection
molding machine, at a constant pressure.
When the Torque Control Mode is selected, the specified torque reference and speed limit
reference are output by the servodrive.
„ Details
Use the following procedure to perform operations in the Torque Control Mode.
1. Set the motion parameters to be used in the Torque Control Mode.
Table 11.2 Examples of Setting Parameters
2. Select the Torque Control Mode (TCON) (bit 1 of OWC000).
3. Set the Servo ON (RUN) to ON (bit 0 of OWC001).
The torque reference and the speed limit reference will be output for the axis according
to the specified motion parameters.
Even while the Torque Control Mode is being selected, the motion parameter settings
can be changed.
4. To stop operation, set the RUN command (RUN) and the Torque Control Mode (TCON)
to OFF.
Name Register No. Meaning
Setting
Example
Torque Reference
Setting (TREF) OWC01B Sets the torque reference
value at 0.01%. 50.00
(50.00%)
Speed Limit Setting
(NLIM) OWC01C Sets the speed limit value at
0.01%. 50.00
(50%)
0
RUN
TCON 1 Set the motion setting parameters.
2 Set the Torque Control Mode (TCON).
Output the torque reference and speed limit
reference.
4 Set the Torque Control Mode to OFF.
: System execution
: User settings
Torque
speed (%)
Torque reference
Time
(t)
3 Start the Torque Control Mode operation.