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Automation & Control
ABB Introduces New Breed of Safety PLCs
11/6/2013

Unlike some safety PLCs on the market, ABB's AC500-S Safety PLC has a separate safety processor.
The Safety CPU can be configured to work even if the non-safety processor is in STOP or maintenance mode, or during an online change.(Source: ABB)
Unlike some safety PLCs on the market, ABB's AC500-S Safety PLC has a separate safety processor.
The Safety CPU can be configured to work even if the non-safety processor is in STOP
or maintenance mode, or during an online change.
(Source: ABB)

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Rob Spiegel
User Rank
Blogger
Re: Safety has completely changed
Rob Spiegel   11/8/2013 10:42:03 AM
NO RATINGS
That's a good question Evanskollmorgen, especially since it's logical that customers will default to their PLC provider. Then it becomes a matter of trusting your PLC provider. But what are the alternatives?

evanskollmorgen
User Rank
Iron
Re: Safety has completely changed
evanskollmorgen   11/8/2013 10:27:05 AM
NO RATINGS
It has changed. One wonders how far this will fragment before someone (IEC?) steps in and creates standards in terms of data and protocol?

As a customer, do I really want to worry about what is the best choice for me? PROFIsafe? CIP Safety? openSAFETY? FSoE?

...Or am I going to just default to whosever PLC is already designed in? Meaning, if I have a Logix PLC/PAC, do I just default to CIP Safety and hope ROK has my back?

If a customer will tend to default to his incumbent PLC provider, how would an ABB or Phoenix or Pilz or "other" Safety PLC play?

 

Rob Spiegel
User Rank
Blogger
Safety has completely changed
Rob Spiegel   11/6/2013 9:34:28 AM
NO RATINGS
Nice article, Al. Boy, it's surprising how much safety has changed in recent years. It wasn't very long ago that the idea of running safety and control on the same cable was considered a crackpot idea. Now you'd have to be a crackpot not to do it.

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