Chapter 6 Control Modes of Operation
6.5.2 Speed / Torque Control Mode Selection
S-T Mode:
The speed command can be the external analog voltage or internal parameters (P1-09 to
P1-11) and SPD0~1 is used to select speed command. The same as speed command, the
torque command can be the external analog voltage or internal parameters (P1-12 to P1-
14) and TCM0~1 is used to select torque command. The speed and torque mode
switching is controlled by the S-T signal.
The timing chart of speed / torque control mode selection is shown as the figure below:
S-T
NOT CARE
NOT CARE
SPD0-1 VALID
TCM0-1 VALID
NOT CARE
TCM0-1 VALID
Torque control mode
Speed control mode
Torque control mode
Fi
ure 2. : Speed / Torque Control Mode Selection
In torque mode (when S-T is ON), torque command is selected by TCM0~1. When
switching to the speed mode (when S-T is OFF), the speed command is selected by
SPD0~1, and then the motor will immediately rotate following the command. After S-T is
ON again, it will immediately return to torque mode.
Revision January 2011 6-51
Call 1(800)985-6929 for Sales
Call 1(800)985-6929 for Sales
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