R42 User Manual
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3.2 Power supply input
The driver's working power is DC power, and the input voltage range is between 24V ~ 48V.
Input power polarity should not be reversed!!!
The driver’s work mode is constant current control. The driver output the voltage to motor
by changing the input power into PWM chopping wave when it is working. In this case, the
input power will affect the performance of driver.
Power selection reference:
Voltage:
Stepper motor has the characteristics of torque decrease with the increase of motor speed,
and the input voltage will affect the amplitude of high-speed torque reduction. Properly
increasing the voltage of the input power supply can increase the output torque of the motor
at high speed.
Therefore, if you want to get better high-speed performance, pls increase the power supply
voltage of the driver; and for low-speed applications, choosing a slightly smaller voltage can
appropriately reduce the heat of the motor.
Current:
The working process of the driver is to convert the input high-voltage and low-current power
supply into the low-voltage and high-current at both ends of the motor winding. In actual
use, the appropriate power supply should be selected according to the motor model, load
torque and other factors.
The effects of regeneration voltage:
When the stepper motor is working, it also retains the characteristics of the generator.
When decelerating, the kinetic energy accumulated by the load will be converted into
electrical energy and superimposed on the driver circuit and input power supply.
Pay attention to the setting of acceleration and deceleration time to protect the driver or
power supply.
When the driver is powered off, you will see the driver's LED indicator on when the load is
pulled to make the motor move, which is also affected by this.
