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Drive set-up procedure
14.3.8
Torque Control and Fixed Stop Function
14
-74
• MD32610 VELO_FFW_WEIGHT (For each axis)
Meaning: Speed feedforward weight
Setting value: [0.01]
Standard setting value: 1.0
14.3.8 Torque Control and Fixed Stop Function
Limiting with drive parameters
You can set the following parameters to control the torque for each axis continuously.
Servo drive
• MD3352 (Pn402) FORWARD_TORQUE_LIMIT (For each servo axis)
Meaning: Forward torque limitingl value
Setting value: [%] (percentage for rated torque)
• MD3353 (Pn403) REVERSE_TORQUE_LIMIT (For each servo axis)
Meaning: Reverse torque limiting value
Setting value: [%] (percentage for rated torque)
Spindle drive
• MD6421 (Cn421) TORQUE_LIMIT (For each servo axis)
Meaning: Torque limiting level on motor side
Setting value: [%]
• MD6422 (Cn422) REGENERATION_TORQUE_LIMIT (For each servo axis)
Meaning: Torque limiting level on regenerator side
Setting value: [%]
Control by CNC (Fixed Stop function)
On YS 840DI system, Fixed Stop function allows you to perform easy, continuous torque
control with torque limiting for the servo axes or spindles via CNC program.
For example, to activate Fixed Stop function for X axis, input the following programming
command.
FXS [X1] =1 G90G00X100. :
Positioning, after torque limiting is enabled for X1 axis
FXS
X1
=0 X0. : Torque limit is released for X1 axis
Set the following machine data for Fixed Stop function.
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