C41 - PWM Variable Speed Control Board

On request


C41 - PWM Variable Speed Control Board


This card lets you control your spindle with PWM and direction signals, as if it was an axis motor. It converts the step signal into and an analog (0-10VDC). This card also has two relays that can be used to control the direction (CW/CCW) and enable the drive (On/Off).

A Variable Frequency Drive or Inverter works by modifying the frequency for AC motors. Most of these devices can be controlled with an external analog signal (0-10VDC). That is, if there is 5VDC coming into through the control signal, the motor will run at 50% of full speed, if there was 10VDC, the motor will run at 100% of full speed. If there is no signal coming out, then the motor will stop.

This unit can also be used on many DC motor controllers by replacing the potentiometer that controls the speed.


Inputs a PWM and outputs an analog 0-10VDC.

Has two relays that can be used to control the direction and enable and disable the drive.

Uses only two pins, one for PWM and one for direction. It is the presence of absence of the valid PWM signal what would start/stop the spindle. 

Jumper to select mode of operation, US or International mode. On US mode, one relay would be used to start CW and the second one to start CCW. On International mode Relay 1 will start/stop, and Relay 2 will determine the direction of rotation. 

Optoisolated output signals. The analog and CW/CWW signals are optically isolated, so this board can be used with drives that make grounds common with the mains that drive the VFD or motor.

Comes with an RJ45 Connector fast installation. With this connector you just have to plug in an standard RJ45 cable and will not require further wiring. 




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File TypeDocument Name
Product ManualC41-R3_USER_MANUAL
Wiring SampleC10R10_AND_C41
Wiring SampleWiring a Huanyang
Wiring SampleWiring a KB120
Wiring SampleC41_and_FC250J
InstructionsInstructions on setting up Mach3 with a C10+C41+BK120
InstructionsInstructions on setting up Mach3 with a C10+C41+HuangYang
Wiring SampleWiring a Minarik MM
Product ManualC41-R2_2_USER_MANUAL_V2
InstructionsHAL modifications for spindle speed control using PWM
XML FileExample XML file C11G, C11GS, C41 and C69
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