Just another control panel

[augiedoggy]

I have a question about the mech relays. If the SSR's control the mech relays, and the SSR's fail hot, then won't they just energize the mech relays when they fail?

the mechanical relays are turned on and off manually by a switch in most cases..(I use a three way switch to prevent accidenatlly turning both elements on at once) . They are more a fail safe and also kill power to both hot legs of power to the element vs an ssr which only kills one half of the actual power going to the element. but because the srr kills one leg the circuit is not complete and the element turns off in normal use with the ssr.

 

[watermelon83]

augie, thx for the reply. I kinda get that, I was reffering to this particular use

https://www.homebrewtalk.com/f170/just-another-control-panel-488304/#post6343511

 

[Bluesfastduce]

The SSR dose not control the relay. Its just there the completely brake the circuit out to the element. Its on when the controller is on and off when the controller is off. Also I have a light that is on when the SSR is on if it fails on I will see the light stay on.

 

[watermelon83]

I see, thank you sir!

 

[mikescooling]

I put in an extra contactor that is controlled by the emergency button, so if anything in the panel starts to burn it kills power to everything inside. So I'm using 3 contactors. They are all controlled by low voltage.

 

[augiedoggy]

The SSR dose not control the relay. Its just there the completely brake the circuit out to the element. Its on when the controller is on and off when the controller is off. Also I have a light that is on when the SSR is on if it fails on I will see the light stay on.

Edit nevermind I misread.
mine is wired similarly except I have it so the controller stays on so I can monitor temps.
I also used relays that are controlled by low voltage 24 volts DC in my case

 

[Bluesfastduce]

Edit nevermind I misread.
mine is wired similarly except I have it so the controller stays on so I can monitor temps.
I also used relays that are controlled by low voltage 24 volts DC in my case

I was thinking of changing mine to that also. my contractors have a 120v coil.

 

[Decoy]

I had a eureka moment (kinda) the other day when I f'ing around with soldering those tiny pins onto wires for the external probe connectors. I'm really annoyed I didn't think of it sooner - use RJ-45s. As an IT guy, I have all the crimps, terminators, sockets, everything Cat5. If I could undrill those holes ...

 

[LandoLincoln]

I had a eureka moment (kinda) the other day when I f'ing around with soldering those tiny pins onto wires for the external probe connectors. I'm really annoyed I didn't think of it sooner - use RJ-45s. As an IT guy, I have all the crimps, terminators, sockets, everything Cat5. If I could undrill those holes ...

True dat. Or even RJ-11. Those audio connectors are a real pain.

 

[Bluesfastduce]

I had a eureka moment (kinda) the other day when I f'ing around with soldering those tiny pins onto wires for the external probe connectors. I'm really annoyed I didn't think of it sooner - use RJ-45s. As an IT guy, I have all the crimps, terminators, sockets, everything Cat5. If I could undrill those holes ...

I think this would work well for a rtd probe but don't know how well it would work for other types of temp probes.

 

[Decoy]

I think this would work well for a rtd probe but don't know how well it would work for other types of temp probes.

Bomb-digitty! Got to measure and look for some of those, they look just about the right size though.

Thanks. That's what's great about these forums - great contributions, great ideas, and take it to the next level.

 

[Bluesfastduce]

The test run went well. I did two back to back 10 gallon batches and only had one problem, I had a temp probe mis-read, but after it was fixed no more problems. The box and heat sinks did not get too hot, I did not test the temperature but they did not get any hotter then I could touch. So, if I add a fan it will be this summer, but I must say that after a long day of brewing with an electric set up I will never go back to gas. It's nice to be able to walk away for a few minutes and not have to watch it like a hawk and it's so much quieter.

 

[augiedoggy]

Just a heads up...I see you are using the ta4 mypins ... if you want the ability to manually control the boil rate on your boil kettle you can swap that one out with the mypin TD4 like this one which works the same as yours only with manual mode as well... they are under $20 shipped..

http://www.ebay.com/itm/231206228037?_trksid=p2059210.m2749.l2649&ssPageName=STRK:MEBIDX:IT

 

[Bluesfastduce]

Just a heads up...I see you are using the ta4 mypins ... if you want the ability to manually control the boil rate on your boil kettle you can swap that one out with the mypin TD4 like this one which works the same as yours only with manual mode as well... they are under $20 shipped..

http://www.ebay.com/itm/231206228037?_trksid=p2059210.m2749.l2649&ssPageName=STRK:MEBIDX:IT

haha I was just looking for something like this.