Current Sensing Relay for SWG

[kroe]

There are lots of scattered experiences throughout this forum regarding current sensing relays to trigger the SWG's power source based on current flow to the pump. There is not a clear solution though - "buy this, hook it up like that".

This thread is an attempt to get a direct answer to the question: "I have a variable speed pump and want my SWG to turn on when my pump does."

(mixed motives here... I need a current sensing relay and want an answer for my setup, but also see a gap in information that this forum could benefit from so trying to make this more generic than my personal question).

Example Setup (shouldn't matter much):

• Pentair 011018
• Circupool SJ-55
• 240v feed from basement sub-panel to junction box at pool pad

Questions

• What current sensing relay would work well? Where can it be bought?
• Where to mount the current sensing relay? In my case it needs to go either in my existing junction box (if small) or in a peripheral box. Some have sub-panels at the pad, and normally you don't mount things or splice in a panel. What's the right way to do this? Pictures?

Simpler is better, smaller is better. Don't want alternate sources of power, additional relays, etc.

I will buy what this thread converges on and report results with photos.

Thanks!

 

[Jimrahbe]

K,

Try this link..... Help wiring relay for SWG control

My plan was to make a sticky for this but I have just been too lazy...

You need to read through the whole thing to eliminate the errors originally made.

Thanks,

Jim R.

 

[n240sxguy]

I didn't read the link, but did they use a current transducer and a regular ice cube relay? That's how I would do it.

 

[yangcha1]

I didn't read the link, but did they use a current transducer and a regular ice cube relay? That's how I would do it.

Another way is to use a digital timer like this to control the SWG. The used one is about $10.
https://www.amazon.com/dp/B0039Q7K1E
The timer is battery backuped, so it should be synced with the pump's clock even there is a short time power outage.

 

[n240sxguy]

That's a good price, but I would want something more fool proof. I have my swg tied in with my pump timer, so I don't have any problem there. I do need to find an off delay relay to use for my booster pump though. I tried using two 90 minute off delayed relays last year and it didn't control like I thought it would.

 

[n240sxguy]

This would work. It has a relay output vs a normal 4-20ma output. You'd have to use another relay to switch the swg on unless they make one that has a higher voltage range. This one is only rated for 36vac/dc. https://blackhawksupply.com/products/amscs?gclid=COz2tY2swdQCFQOtaQodYhYPrg

 

[kroe]

Hoping to find a "single box" solution that doesn't require an external relay.

 

[Jimrahbe]

Hoping to find a "single box" solution that doesn't require an external relay.

Well, you know what they say about hope... It is not much of a strategy...

I'm pretty sure that if there were a single box solution if would be widely used.

Thanks,

Jim R.

 

[yangcha1]

Hoping to find a "single box" solution that doesn't require an external relay.

My solution yesterday is pretty much a single box solution and pretty reliable.

 

[kroe]

Hoping to find a "single box" solution that doesn't require an external relay.

 

[davidc18]

Hoping to find a "single box" solution that doesn't require an external relay.

any updates? I am looking to install a Hayward AquaRite with a currently installed Hayward SP2602VSP. The VSP is running 24/7 on its lowest speed without any external timer box. Information on successfully the AquaRite with a VSP is very thin and non specific. Any help is appreciated.

thanks,
Dave

South Florida

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