Chapter 6 Control Mode of Operation ASDA-A2
6-52 Revision February, 2017
6.6 Others
6.6.1 The Use of Speed Limit
The maximum speed in each mode is limited by internal parameters (P1-55), not matter it is in
position, speed or torque mode.
The issuing method of speed limit command and speed command is the same. The command
source could be external analog voltage or internal parameter (P1-09 ~ P1-11). Please refer to
Section 6.3.1 for descriptions.
Speed limit can be used in torque mode (T) only. It is used for limiting the motor speed. When the
command in torque mode is issued by external analog voltage, DI signal is enough and can be
regarded as SPD0~SPD1 which is used to determine the speed limit command (internal
parameters). If the DI signal is not enough, speed limit command can be issued by analog voltage.
When the function of disable/enable limit function in P1-02 is set to 1, the speed limit function is
enabled. See the timing diagram as below.
6.6.2 The Use of Torque Limit
The issuing method of torque limit command and torque command is the same. The command
source could be external analog voltage or internal parameter (P1-12 ~ P1-14). Please refer to
Chapter 6.4.1 for descriptions.
Torque limit can be used in position mode (PT, PR) or speed mode (S). It is used for limiting the
motor torque output. When the command in position mode is issued by external analog voltage, DI
signal is enough and can be regarded as TCM0~TCM1, which is used to determine torque limit
command (internal parameters). If the DI signal is not enough, torque limit command can be issued
by analog voltage. When the function of disable/enable torque limit function in P1-02 is set to 1, the
torque limit function is enabled. See the timing diagram as below.
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