PLC AC Voltage Detector
PLC AC Voltage Detector
(OP)
Using an analogue input card with a plc, i want to know if you can sense the polarity of the AC mains? With a 240V phase to neutral voltage connected through a 15KOhm resitor, the current is limited to 16mA.Can the PLC then use this to determine when the Voltage value is in the positive/negative half cycle?





RE: PLC AC Voltage Detector
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: PLC AC Voltage Detector
TTFN

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RE: PLC AC Voltage Detector
I do not know of any COTS PLL modules that can be installed in a PLC rack. Are there any?
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: PLC AC Voltage Detector
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