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#1
03/25/2007, 07:03 AM
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any Ya' Old Salts still here?
Is there a way that I can have my battery back up air pumps come on ONLY if there is a power outage? Some sort of solenoid switch? wired to the switches on the battery pumps? and when the power comes back on, the pumps shut off. Any thoughts? TinMan
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#2
03/26/2007, 01:58 AM
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Use a NC relay (normally closed). When the power is off, the relay will allow power to go thru it. Use a relay that can handle both AC (for the coil) and DC for the control.
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Gresham _______________________________ Feeding your reef...one polyp at a time |
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#4
03/30/2007, 05:32 PM
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Alright Mr. G, I want pics and progress on the original thread.
 I've just installed a system with 2-226's and 10 RTD modules all daisy chained... to bad its not on a NaClH2O$sump.  Just red-neckin, shoot a post. Tinman - GH is right on, AC on the coil and DC on the contacts.
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"Technology is dominated by two types of people: those who understand what they do not manage, and those who manage what they do not understand." |
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