I have a Seig FC350BJ/110V spindle drive on a X2 Harbor Freight mill. I am interested in buying the C6 board to allow Mach3 control of the spindle. Do you have wiring diagrams and Mach 3 configuration notes on how I can use the board? Thanks

1087 views  May 13, 2019

It is ideal to use a breakout board that has the spindle control circuit built-in and that uses a Safety Charge Pump.  This will greatly simplify your wiring and using a Safety Charge Pump when wiring your system delegate starting your spindle to the CNC, you need to make sure you have a watchdog that ensures the spindle start commands it sees are valid.

The C11G would be a good option:


If you are sure about what you are doing and have the appropriate safety incorporated into your system, then the C41S would do the job: https://www.cnc4pc.com/c41s-pwm-variable-speed-control-board.html

The C41 is a better option than the C6, as it has a build in DC-DC converter that generates the required voltage to power the board, making it unnecessary to add an external power supply

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