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It's pretty much like a kill-switch on a guitar, it shuts off everything automatically. Say you were headed for a tree or a big rock or off a cliff or someting like that, the emergancy stop button will totally turn off the vehicle. There will of course still be momentum. As Isaac newton said "Objects in motion stay in motion unless disturbed by force." The "force" is ther emergancy stop button

Sorry that was so long of an explanation!

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Q: When is an emergency stop button needed on a machine?
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What does an emergency stop button do?

Stop the machine.


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If it pertains to electrical controls on a machine then the safety device is called an emergency stop button.


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A red coloured stop button can be used to either stop the machine normally, or to do an emergency stop in a hurry. It is larger and prominent to make it quicker and easier to smack the button with an open hand. The smaller green coloured start button is either level or recessed, meaning a finger has to be used to start the machine.The emergency stop button will twist when pushed and stay down, breaking the circuit. It has to be turned to release the button back for normal use and to use the start button again.


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The emergency stop buttons (safety buttons) on a CNC guillotine will stop all the actions of the machine immediately when pushed. Of all the things that could be done to stop the machine, pushing the safety button is the fastest way of all to stop it when something goes wrong.


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