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  • Quick Start
    • Installation Dimensions
    • Language Switch
    • Power Connection and Startup
  • Wiring and Setup
    • Extra Digital Control Output
    • Machine Coordinates Save/Restore
    • CAM Post-processor
    • Output port controls relay
    • Limit switches / Homing
    • Settings Backup and Restore
    • 3D Tool Path Simulation
    • Spindle Control
    • Change boot splash screen
    • Connect Stepper/Servo Motor
    • source code
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    • Update System Program
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RP2350 GRBLHAL Control Board

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Spindle Control

The controller supports 0~10V analog voltage signal output for controlling the VFD (Variable Frequency Drive) spindle speed,

 

as well as M3 and M4 signals for controlling the VFD spindle rotation direction,

 

If you have a standard spindle (controlled only through a power switch), please refer to Output Port Relay Control and use the M3 spindle switch port for control

 

If using a laser,

 

or a switch spindle with speed adjustment through a MOS transistor, connect the PWM signal and share GND with the controller,

 

Related terminal positions are shown below:

 

 

 

Note: The 0-10V analog voltage is converted from a 0-5V PWM signal through an operational amplifier,

 

Wiring Example #

 

 

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Updated on 2025年11月29日
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