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???
12/11/04 03:01
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#82926 - 440v ac routing problem
Responding to: ???'s previous message
Dear Kuldeep:

After read, all comments I will suggest you some to do.

It's not still very clear for me, what's your hard, but in industrial application with contactors, I many times did the following, with best results.

1- Any CPU board fully isolated from the rest of circuit, to avoid EMI and ground loops.

2- In the case that fails continue, I use a solid state, 3 phase contactor made with MOC3042 optocouplers and driving triacs.
I was driving until 20Hp trifasic motors and a lot of solenoids with zero noise in CPU's environment.

3- Obviously I used a different power supply for CPU and externals sensors.

Good Luck.


List of 23 messages in thread
TopicAuthorDate
440v ac routing problem            01/01/70 00:00      
   OK            01/01/70 00:00      
      Every thing already done...            01/01/70 00:00      
         language, guessing            01/01/70 00:00      
            language, guessing            01/01/70 00:00      
               Trapped ?            01/01/70 00:00      
               first project            01/01/70 00:00      
   debounce or noise            01/01/70 00:00      
      contactor wiring            01/01/70 00:00      
         guesses            01/01/70 00:00      
      debounce or noise            01/01/70 00:00      
         Does it mean?            01/01/70 00:00      
         all done            01/01/70 00:00      
   all done?            01/01/70 00:00      
   440v ac routing problem            01/01/70 00:00      
      Snubbers?            01/01/70 00:00      
   hi all i find the cause of problem            01/01/70 00:00      
      enclosure ?            01/01/70 00:00      
         enclosure ?            01/01/70 00:00      
            Search, Search Search more and more.....            01/01/70 00:00      
            box            01/01/70 00:00      
               hiding info            01/01/70 00:00      
                  hiding info            01/01/70 00:00      

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