Building a small control system for two pumps. The pumps need to start at 7pm and stop at 7am. During this time, the pumps should turn on for 30 minutes, then rest for 30 minutes. Would Schneider/Zelio smart relay do this?
Hello John1
I may suggest looking into a Repeat Cycle Twin Timer. These have two time delay relays in one package that each on-off times can be setup independently and will cycle. Having one cycle the 12 hrs on 12 hrs off to trigger the cycle of the 30min on 30 min off.
Thanks Troy!!
PLC’s such as the one you mentioned Schneider Electric - Zelio Logic. https://www.digikey.com/en/products/filter/controllers/programmable-plc-pac/814?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAG4B2aWehA9lANrgAMcYcCAuoQA4AuUIIAXyFA
These can be programmed with multiple time delays and to function as you required. Zelio Logic smart relays are programmed using ladder logic.
I did look at these but seems a bit overkill. I have nice THC15 24hr timer with display and want to use this to trigger my interval timer. Did find GR8-S1 timer- once S goes high, does continuous interval timing also carries 16A.
John
There’s plenty of ways to tackle such problems, but one may want to take note of the arduino opta PLCs.
Though relatively new and perhaps unproven to some ways of thinking, they offer a lot of capability for the price and leverage a very popular ecosystem. If (for example) a person wanted to add sensors for fault detection and communications for alarms, it’d be a relatively low-cost/low effort avenue for such things.
Also, do consult the fine print when considering relay ratings. It’s not uncommon to see the number vary by a factor of ~3 depending on application considerations.
Thanks Rick. I already use Click Plus PLCs for my projects (small number I/Os, mostly valves and pumps etc).
Not real comfortable with using Arduino for my customers.
JNS