Control signals

welsh · Dec 3, 2003

can you help me here!? Does anybody know the best industrial control signal to operare at? iv been told 0-20mA 20-40, 40-60 but know one has given me a clean cut answer!
regards!

hesham · Dec 3, 2003

welsh
The standaed signal for control in current format is either 4-20mA or 0-20ma but the first one is widely used there are also volt signals such as 0-10V ,1-5 volt .
For Me i have never seen 20-40 mAor 40-60mA is it realy exist so.

i don't think so

Vetteboy · Dec 3, 2003

You should post a poll, I vote for 4-20ma

Preeya · Dec 3, 2003

I also feel 4-20mA is good. You might not want to use 0mA as the lower limit as it would become hard for you to detect a signal from a cut wire. It might also trigger false alarms.

PhilipW · Dec 3, 2003

4-20ma is virtually standard EVERYWHERE.

I would be interested to know of any reason for or application of any different standard.

Control signals

welsh

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hesham

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Vetteboy

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Preeya

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PhilipW

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