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Old May 27th, 2014, 07:35 AM   #1
Tim Ganz
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Safety Relay and Contactor Abbreviations

I have some safty control relays like this http://literature.rockwellautomation...g001_-en-p.pdf

and some safety contactors like this http://literature.rockwellautomation...p004_-en-p.pdf

We use Abbreviations on our prints like CR=Control Relay and AH=Alarm Horn,etc.

What should I use some safety relays and safety contactors when both are in the same panel?

SR=Safety Relay and SC=Safety Contactor?

Other Ideas?
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Old May 27th, 2014, 09:21 AM   #2
Jeev
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Traditionally I think it's K and U, Z or A. I use SC and SU (Safety Unit). It doesn't really adhere to any standard though.
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