KESV
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- Aug 26, 2015
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in your logic table , what does "SWx> SWy" indicates?
The reasoning for this is the fact I should be able to use any combination of the three heaters on the two 220V/16A power supplies I have available. K2 and K3 receive each 220V and both are able to feed Heater 2 with power. In order to avoid short circuit between the two 220V I put in two contactors. If it could be done any easier it would be nice.Is there any specific reason why you chose to control heater 2 by two contactors and heater 1 and 3 by only one contactor?
Each contactor have an auxillary NO and NCA practical question is about contactors, how many auxilary contacts have they available?
A Logo 230RC isn't more expensive and doesn't need more space than several auxilary contactors and one or more time relays.
Of course well possible with Logo or any other compact PLC.
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