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BDThompson
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Engineering Fields - Control Engineering - Newby Member Long Time User Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jun 2006
Posts: 224
Good Answers: 9

Safety Relay Schematic

10/14/2010 3:32 PM

I'm looking for a published explanation of a Safety Relay Schematic.

I've found many examples of how to use the relays, but no explanations of what the various connections (S33, S34, S10, S11, S31, S32, as a short list of many connections) do.

I'd rather not have to reverse engineer the functionality and miss something. Does anyone have a link to a good resource on explanation of Safety Relay Schematic?

Thanks for the help.
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timelord
Commentator

Join Date: Oct 2010
Location: Quantum Dimension
Posts: 85
Good Answers: 1
#1

Re: Safety Relay Schematic

10/14/2010 3:58 PM

Yo, take a look here

http://www.schmersal.net/cat?lang=en&produkt=yyw733331kfv3pci8h5694603z9rnm

There is all you need

TTYL ,ciao T L ;)

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BDThompson
Power-User
Engineering Fields - Control Engineering - Newby Member Long Time User Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jun 2006
Posts: 224
Good Answers: 9
#2

Re: Safety Relay Schematic

10/14/2010 4:22 PM

This is a good start. It's beginning to fill in the holes.

Thanks.
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gmeeuwsen
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Join Date: Jun 2012
Posts: 1
#3
In reply to #2

Re: Safety Relay Schematic

06/21/2012 4:04 PM

Hello,

I teach wind turbine electrical concepts at a community college. In the wind industry, we use safety relays extensively in fail-safe, emergency stop systems.

I'm not sure if you're still looking for info on safety relays, but I recommend going on line and searching for Allen Bradley's safety relay pdf (catalog # 700-Z). The first seven pages of it explain the concept of safety relays better than any other source I've seen.

If you email me at gsmeeuwsen@gmail.com, I will be glad to send the pdf to you too.

Good luck.

-Greg M.
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