Mendelmax Emergency Stop Button Bracket
by Stu_Dkn, published
Anyway I bought an emergency stop button from china (ebay) and this is the resulting bracket.
There are two versions one that fits around the corner bracket and another without the cut out.
It's just a shame I had run out of black ABS.
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I did your search and foundÂ the following here. Without anywhere else to share I thought readers of your Thing would be a good audience. Explains why a normal button wont do.
What is the difference between a push button
switch for an emergency stop and a general-purpose push button switch?
ï»¿A general-purpose push button switch is used for controls, e.g., to start
machine operation or to switch modes. An emergency stop push button switch
is used as a safety measure to stop hazardous parts (loads).
An Emergency Stop Switch must be highly visible in color and shape, and
must be easy to operate in emergency situations. The following
requirements are specified in the European Standard EN 418 (International
1. A direct opening mechanism must be installed on the NC contact.
2. There must be a self-holding function.
3. The button must be a "mushroom" head design or something equally easy
4. The button must be red and the background must be yellow.
In addition to the 4 points mentioned above, the emergency stop control
circuit must have countermeasures for each category.
There is no difference between a general-purpose push button switch and an
emergency push button switch regarding the function of the NO contact.
A general-purpose push button switch doesn't have a direct opening
mechanism on the NC contact. If the contact welds, conduction will be
maintained and the device cannot be stopped in a hazardous situation
(load). If this occurs, the device may keep operating in the hazardous
state. Therefore, use the NC contact of an emergency stop push button
switch for safety applications.
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Bolt the cut out switch to it and then bolt it to the printer. The switch is rated 600v @ 10A and is a double pole so when I connect it I will take the mains Live and neutral from the IEC Mains socket through the cut out switch before it goes to the solid state relay and the power supplys.
To find one just search ebay for "Emergency Stop Push Button"
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