Others; Speed Limit; Torque Limit; Command Source Selection Of Speed Limit - Delta Electronics AC Servo Drive ASDA-AB User Manual

6.6

Others

6.6.1 Speed Limit

The max. servo motor speed can be limited by using parameter P1-55 no matter in position, speed or
torque control mode.
The command source of speed limit command is the same as speed command. It can be the external
analog voltage but also can be internal parameters (P1-09 to P1-11). For more information of speed
command source, please refer to chapter 6.3.1.
The speed limit only can be used in torque mode (T mode) to limit the servo motor speed. When the
torque command is the external analog voltage, there should be surplus DI signal that can be treated as
SPD0~1 and be used to select speed limit command (internal parameter). If there is not enough DI
signal, the external voltage input can be used as speed limit command. When the Disable / Enable
Speed Limit Function Settings in parameter P1-02 is set to 1, the speed limit function is activated.
The timing chart of speed limit is shown as the figure below:
Disable / Enable Speed Limit Function
Settings in parameter P1-02 is set to 0

6.6.2 Torque Limit

The command source of torque limit command is the same as torque command. It can be the external
analog voltage but also can be internal parameters (P1-12 to P1-14). For more information of torque
command source, please refer to chapter 6.4.1.
The torque limit only can be used in position mode (Pt and Pr mode) and speed mode (S mode) to limit
the output torque of servo motor. When the position command is the external pulse and speed
command is the external analog voltage, there should be surplus DI signal that can be treated as
TCM0~1 used to select torque limit command (internal parameter). If there is not enough DI signal, the
external voltage input can be used as torque limit command. When the Disable / Enable Torque Limit
Function Settings in parameter P1-02 is set to 1, the torque limit function is activated.
The timing chart of torque limit is shown as the figure below:
Disable / Enable Torque Limit Function
Settings in parameter P1-02 is set to 0
Revision January 2009
Chapter 6 Control Modes of Operation|ASDA-AB Series
SPD0~1 INVALID

Command Source Selection of Speed Limit

TCM0~1 INVALID
Command Source Selection of Torque Limit
Disable / Enable Speed Limit Function
Settings in parameter P1-02 is set to 1
SPD0~1 VALID
Disable / Enable Torque Limit Function
Settings in parameter P1-02 is set to 1
TCM0~1 VALID
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