Hi,

My company builds machinery where we use mushroom head E-Stop pushbuttons. Where these are located, operators at times lean on them accidentally, stopping the machine unintentionally.

I am looking for some sort of protective collar that would help prevent accidentally pushing my E-Stop mushrooms while not preventing access when/if someone really wants to press an E-Stop.

If anyone can tell me where I can get something like this, I'd really appreciate it.

Thanks in advance,
Paul

 

It would seem to defeat the purpose of having the estop PB in the first place if you made them harder to use. Maybe relocating them or retraining the operators is a better option.

--
Bob

 

Check this site

http://www.datacover.com

 

GE, Square D, Telemecanique all make protective collars ("shrouds", "guards", etc.) for their mushroom-head emergency stop push-buttons (in various colors, too!).

Any supplier/supply house should be able to look in their catalogs and find a suitable "shroud".

An Internet search found this result:

http://www.alliedelec.com/images/products/datasheets/bm/TELEMECANIQUE/70007314.pdf (remove any spaces inserted by the control.com software)

On Page 331, you will find some 40mm 'guards/locks', part numbers beginning with ZB2BZ.

The document in the reference above seems to be quite old, but is indicative of the kind of information available from any manufacturer.

Based on the questions you have asked in this forum, I would suggest that you obtain as many catalogs from different suppliers as possible. Even catalogs from McMaster-Carr or Grainger will have the kinds of devices you have asked about. If you work with a particular electrical supplier or warehouse, they typically have sales representatives who can answer these kinds of questions very quickly, or at least have access to the catalogs and product data sheets for the manufacturers they represent. These are excellent questions for suppliers--they want to sell you as much equipment as they can.

Though lately I've seen a trend starting where people are buying this kind of equipment from eBay and other similar on-line sellers/sites. In that case, you can still use the on-line catalogs of most of the major manufacturers or suppliers to find different devices and part numbers. Not all parts can usually be found on some of these sellers/sites, though.

 

Yes, I've seen these used a lot. Of course you need to check local regulations to know exactly what is allowed in your country / state.

A quick search on the internet turned up -> http://www.lovegreen.com/shop/Scripts/prodView.asp?idproduct=383 The LRM141-EG has a guard.
and -> http://www.idec.com/language/english_j/EStop/EP1125_EMOSwitchGuard/EP1125-0_SEMIguard_060612.pdf

and this -> http://machinerysafety101.com/2010/09/03/guarding-emergency-stop-devices/#axzz1rfhhwREE discusses what is and isn't allowed.

(remove any spaces in the links)

Rob
www[.]lymac.co.nz