I failed to mention the control relays come on from a Digital Out on my RTU, this being said I need to locally make each location skip a command on cycle thus the need for a alternating relay. In essence each location has a wireless controller that all receive the command on. The issue is how...
I have 3 locations that have a relay controlling a pump, each site is several miles from each other and when my SCADA system calls for RUN all three relays energize at the same time. What I need is a local control that allows only 2 pumps to run at the same time but they need to alternate...
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