Teknik ClearPath - PWM Duty Cycle vs. Motor Torque

C LEAR P ATH U SER M ANUAL R EV . 1.97 60
ionship of PWM duty cycle to motor torque Relat
• Shaft torque increases in the CW direction as PWM duty cycle
decreases from 50% to 0%.
• Shaft torque increases in the CCW direction as PWM duty cycle
increases from 50% to 100%.
• As PWM duty cycle approaches 50% from either direction, motor
torque approaches 0.
• O% and 100% duty cycle (static low and static high conditions) are not
valid PWM states. ClearPath interprets these values as zero-torque
commands.
• PWM minimum on time and minimum off time = 300nS.
Max. Torque
(CCW Rotation)
Torque = 0
Zero
Torque
10 20 30 40 50 60 70 80 90 1000
Max. Torque
(CW Rotation)
Duty Cycle
PWM duty cycle vs. motor torque
T
EKNIC , I NC . F AX (585)784-7460 V OICE (585)784-7454