Best return pump program strategy

[LucyMollyMaryJane]

Hello,
Looking for opinions on the best control strategy for return pumps from the sump to the DT. If the sump has two return pumps (1+1, lead/lag) with one pump able to handle full return flow back to the DT; what is the best programming strategy to utilize both pumps in the event the lead pump fails?

Controlling with ApexPro.

Suggested codes with narrative are overly appreciated!

 

[CreatiVe2]

I have the Neptune cor 20 pumps in my return, so this might not apply to your situation, but I figured i could give some insight from a different perspective.

I made a profile setting for "Pump_PwrOut" that has a set speed, and my return pumps power on a UPS.

I use this line in my Pump outlet

If Power EB832_TOP Off 000 Then CORM_PWROUT

and this as the profile

this would only work if your pumps are able to have speed controls.
you could use a line of code to detect if your main pump output is "0"

If Output Pump Percent < 1 Then PumpProfile

then trigger a higher or lower speed setting depending on a failure vs a power outage

 

[LucyMollyMaryJane]

Thank you for your reply.
My pumps are constant speed, not VFDs. I plan to upgrade sometime soon though. Once I do, this will come in handy.
Thanks!