ASDA-B2 Chapter 6 Control Modes of Operation
Revision May, 2018 6-43
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.
Disable / Enable Speed Limit Function
Settings in parameter P1-02 is set to 1
SPD0~1 INVALID
SPD0~1 VALID
Disable / Enable Speed Limit Function
Settings in parameter P1-02 is set to 0
Command Source Selection of Speed Limit
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) 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.
TCM0~1 INVALID
TCM0~1 VALID
Disable / Enable Torque Limit Function
Settings in parameter P1-02 is set to 1
Disable / Enable Torque Limit Function
Settings in parameter P1-02 is set to 0
Command Source Selection of Torque Limit
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