All CNC machines are using a control signal to manage the spindle rotation speed. Hence, PLH3D-6W Series laser heads can be controlled by any CNC controller. This feature makes our laser heads universal. 


A CNC controller outputs a signal in the form of an Analog, PWM or TTL signal. This signal is used for modulation of the spindle speed. The same CNC output signal which is used for spindle speed modulation can be connected to appropriate input of the laser head. Further, modulation of the laser head power can be controlled in the same way as spindle speed is, i.e. changing spindle speed in G-code “S0-S255”.


Note: It is important to ensure that the spindle signal is switched off (no voltage output) while the CNC machine is in idle.


Connections for Common CNC Machines


CNC Name

Connection

Type of control

PLH3D-6W Input

STEPCRAFT CNC

DB15 connector PIN 7

PWM 

Pin #2 

DB15 connector PIN 2

GND

Pin #3  

X – CARVE

“Spindle (PWM)”

PWM 

Pin #2 

 “GND”

GND

Pin #3  

CNC xPRO V3 Controller

~D11 Variable Spindle PWM

PWM 

Pin #2 

“GND”

GND

Pin #3  

CNC Shark

“Spindle Terminal”

PWM

Pin #2 

“GND”

GND

Pin #3  

Legacy Maverick CNC

PIN 17

PWM

Pin #2 

GND

GND

Pin #3  

CNC USB Controller Mk3/4

Mk3 OUTPUT Connector, Pin 1,2 or 6

PWM

Pin #2 

Mk3 OUTPUT Connector, Pin GND

GND

Pin #3