Mount E-Stop
Setup Power chassis
Mount Chassis
Mount Aux Panel
Mount Power supply
Power Supply no Chassis
Power Supply with Chassis
Power Supply with Chassis & Aux
Mount AC Relay
Mount DC Converter
Mount E-Stop
Mount Limit Switchs
Mount Stepper Motors
Mount Cooling Fan
Wire DC Converter to Power Supply
Wire JK02 to DC Conv
Wire DIV268N to Steppers
Wire JK02 to DIV268N
Wire DIV268N to Power
Wire Steppers
Wire E-Stop to JK02-M
Wire Limit Switches
Wire Limit Switches to JK02-M
Wire Converter/Fan
Mach3 EStop/Limits for JK02
Mach3 Pins/Ports JK02-M5



Hi, if you find these instructions helped with your CNC project, please consider
making a donation to help keep this site going and growing.
To make a contribution click anywhere here


Mounting the Emergency Stop Button

These instructions are for mounting the E-Stop Button in your enclosure

The function of an Emergency stop button is to bring all of your CNC components to a complete stop. It is not wired directly to any components other than the TB6560 Driver board (however, the e-stop button supplied has a separate second additional circuit that can be wired to other components). The driver TB6560 Driver board sends a signal back to the software and your software will stop all devices; Stepper motors, Router, Vacuum, fluid pumps, etc.. The main advantage to using an E-Stop button is that it is not a "hard off" like flicking a power switch, once you have cleared the issue you can resume activity where the machine was stopped. It can be mounted anywhere in your enclosure but should be positioned so it services both the TB6560 Driver board (and AC Relay if you intend to use it as a direct off for attached devices).



AC Mains Power can kill or seriously injure

DO NOT plug in your equipment while you are working on it

Do not drop



Parts Required


Supplied Parts

1 x E-Stop Button


Parts to be sourced




Recommended tools

Electric drill

22mm hole saw or some other tool capable of cutting out 22mm circle appropriate for the material your enclosure is made of



Parts Overview

Emergency Stop Button

  1. Terminal 1 (Normally Closed circuit in)
  2. Terminal 2 (Normally Closed circuit out)
  3. Terminal 3 (Normally Open circuit in)
  4. Terminal 4 (Normally Open circuit out)
  5. Normally Closed Circuit
  6. Normally Open Circuit
  7. Switch Assembly
  8. Inner retaining nut
  9. Rubber seal
  10. Outer retaining nut
  11. Mushroom button


Mounting template (Not to scale)


Manufactures diagram

Hobby CNC's diagram

Switches are fairly consistent, 22mm circular cutout has approx 0.25mm leeway.

Download as .DXF


Mounting Process

When choosing your mounting point positions please consider the following:

  1. The E-stop button will need to be positioned where it is easy to get to and should be visible.
  2. The NO side of the E-Stop switch will need to be connected to the TB6560 Driver board's Limit
  3. The NC side of the E-Stop switch will need to intersect with the AC Relays DC+ input wire if being
    used as a hard off for the relay.
  4. E-Stop is push to activate and requires enough room for the downward movement of the mushroom
  5. Do not run wires directly over or on the E-Stop button.


Once you have selected the desired position to mount the E-Stop button please cut a 22mm (approx)
opening as per the mounting template. Switch orientation is at your discretion.


Remove the E-Stop switches red Mushroom Button by twisting it anti-clockwise until it becomes loose.


Remove the E-Stop switches chrome Outer Retaining nut by twisting it anti-clockwise until it becomes


Insert the Switch Assembly from the inside of the enclosure through the 22mm opening. The Internal Retaining
nut and Rubber seal should but up against the inside surface of the enclosure.


Replace the chrome Outer Retaining nut and turn it clockwise until it is tight. If there is not enough thread protruding
you may have to wind the Internal Retaining nut back to allow more thread through.


Now replace the red Mushroom Button and turn it clockwise until you feel the release spring offer resistance. Do not
force or over tighten as you may damage the release spring.


The E-Stop button is now mounted. To test it's mechanical operation, first pushdown on the top of the Mushroom
Button and it should drop 5-6mm and lock into position. In this position, the NO circuit is closed and a signal will
be sent to the TB6560 Driver board (when connected). The NC circuit is now broken and power will be cut to the
AC Relay (when connected)


To release, rotate the Mushroom Button in the direction of the arrows, you should feel some resistance from the
release spring and the button should pop up into it's original position. In this position, the NO circuit is open and
no signal will be sent to the TB6560 Driver board (when connected). The NC circuit is now closed and power will
be sent to the AC Relay (when connected).


Supplementary Images

No additional images



Next Step

You are now ready to move onto the next step:









This site was last updated 02/08/14