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Old February 27th, 2018, 12:00 PM   #1
milmat1
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Safety Switch Nomenclature

Folks,
On a machine, I have some safety bumper switches placed so an operator can bump them with his arm and it forces an ESTOP condition.
I need to label these safety switches (on the machine), but not sure what to call them. I can't call them an ESTOP.
How about some ideas here....
Safety Stop..
Shut Down Switch..
SAFE STOP
...Etc
What are the limitations as for what they are labeled.. If any ??
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Old February 27th, 2018, 03:02 PM   #2
jimtech67
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" forces an ESTOP condition"
Bump E-stop??
Call them what they are so there is no confusion.
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Old February 27th, 2018, 10:03 PM   #3
jraef
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The semi-official industry term for them is a "Safety Edge" device, so I have used signs that say "Safety Edge - Emergency Stop"
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Old February 27th, 2018, 10:22 PM   #4
cleeton
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Not sure you can use a safety edge as an “E-stop”. Most of the ones I’ve seen are self resetting when pressure is removed and most standards require manual release of an E-stop. I believe safety edges are intended for guarding hazards (pinch points) similar to a light curtain or area scanner.
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Old March 5th, 2018, 07:47 AM   #5
milmat1
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Quote:
Originally Posted by jraef View Post
The semi-official industry term for them is a "Safety Edge" device, so I have used signs that say "Safety Edge - Emergency Stop"
This is about what I had decided to do, Thanks...
Quote:
Originally Posted by cleeton View Post
Not sure you can use a safety edge as an “E-stop”. Most of the ones I’ve seen are self resetting when pressure is removed and most standards require manual release of an E-stop. I believe safety edges are intended for guarding hazards (pinch points) similar to a light curtain or area scanner.
That is what they are doing. guarding an area where the operator is very close to a hazard. However if tripped they will kill my main safety relay, requiring a push button manual reset of the machine..
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Old March 5th, 2018, 09:31 PM   #6
lpc921
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I wouldn't call it an E-stop. Some standards require E-stop to be "mechanically lathing" [ISO 13850 4.4.3], or self-latching [NFPA 79 10.7.2.2]. Can you use a pull wire E-Stop instead?
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