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Old December 6th, 2002, 03:48 PM   #2
awalinski
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Canada

awalinski is offline
 
Join Date: Sep 2002
Posts: 38
In our application few weeks ago, none of the 120 VAC relays or valves were working, even though they were energized by the program and we were passing power to PLC output terminals.
Everything went fine when we grounded the neutral at the transformer.
Obviously there wasn't a required potential difference before grounding.
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Alex
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