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Old 10-10-2012, 02:03 PM   #1
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Default Need help with a simple wiring diagram please

I'm building a simple HERMS system and could use some help on wiring up my PID/SSR/element.

The plan is to pump the wort from my cooler/MT through what was previously an immersion chiller that will be placed in my HLT that has a 2000w heating element (I don't have a 240v power source so 120v/20A is what I'm going with).

I am not planning to use any switches or control the pump through this diagram unless someone makes the case for doing so. So the pump will be plugged in and powered separately and will run continously throughout the mash.

I have:
2000w heating element
Auber SYL-2352 PID
40A/250V SSR-40 DA with heat sink
K-type thermocouple (I know I can use an RTD but I already had the k-type and thought I'd try to make it work)

Since I'm using a 120v power source I was going to plug the system into a surge protector and just use the switch on that to turn the power on/off at the beginning/end of the mash.

Can someone help me out here?

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Old 10-10-2012, 11:49 PM   #2
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This is my first stab at a diagram (based on a P-J diagram that I crudely modified). Any reason this wouldn't work?



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Old 10-11-2012, 12:16 AM   #3
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Diagram looks OK if you really wanna keep it that simple. I would suggest a switch to control a contactor after the SSR. I suggest that for 2 reasons.

1 safety of having a contactor that fails in the off position. Your current setup the only way to turn the element off is to unplug the whole control box.

2. Its nice to be able to have your pid on without having power to the element. Its just a convenience thing but its much easier to avoid dry firing your element this way.

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Old 11-10-2012, 02:11 PM   #4
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So I'm looking to implement that switch you were talking about. The switch goes between the SSR and the heating element on that diagram? Not between the power source and the SSR?

Looking to just use a simple light switch. Is that all I need?

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Old 11-10-2012, 09:28 PM   #5
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The switch goes to a contractor that is between the SSR and element. There are switches rated at 30A but a contractor keeps all the high amperage stuff further from your hands.

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Old 11-12-2012, 12:40 AM   #6
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So is this what I need?

http://www.amazon.com/gp/product/B00...pf_rd_i=507846

Also, been trying to read up this weekend on how to wire these. I only have basic knowledge about this stuff. Is the wiring diagram below ok?


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Old 11-12-2012, 02:20 AM   #7
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Wow.!

I need to quit.

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Old 11-12-2012, 12:13 PM   #8
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I'm going to go out on a hunch and say that my diagram is wildly innaccurate lol

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Old 11-12-2012, 04:44 PM   #9
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It appears from your drawing that you're going to supply the PID with power from another source. Why? It draws very little amperage and complicates your design.

Regarding the pump, is it a March or Chugger (magnetically connected impeller) do you at least have a ball valve on there to control flow? Otherwise the propensity to have stuck mashes goes up considerably.

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Old 11-12-2012, 08:43 PM   #10
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Yeah I'll end up not powering the PID seperately.

Do you have enough knowledge about circuitry to comment on my wiring diagram above? PJ seemed to indicate it's a mess and judging by what I've read on here he seems to be the resident expert.

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