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PID Temperature controller SNR v SSR

 
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Firebrewmedic43



Joined: 23 Dec 2014
Posts: 101
Location: Tennessee

Drinking: barrel-aged Foreign Export Stout

Working on: Helles


PostLink    Posted: Thu Jan 15, 2015 11:00 pm    Post subject: PID Temperature controller SNR v SSR Reply with quote


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I've read the difference between RNR, SNR and SSR, not sure I understand fully the real application of the differences. So my question is, Can I use a SNR instead of an SSR PID controller
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foomench



Joined: 21 Feb 2012
Posts: 710
Location: Longmont, CO

Drinking: Pinot barrel aged quad

Working on: Flanders oude bruin in barrel, Flanders red fermenting to refill the barrel


PostLink    Posted: Fri Jan 16, 2015 1:37 am    Post subject: Reply with quote

Do you have an SNR that can handle 240V at 30A? The Auber PID is designed to trigger an SSR, and the SSRs used in the Electric Brewery are rated to handle the power required. I can't say I'm that familiar at all with SNRs and RNRs. Do they use physical coils and contacts to work? If so, they are not ideal for the quick switching of the PID, and would probably use more power for switching.
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Yo_Pauly



Joined: 30 Nov 2014
Posts: 40
Location: New Richmond, WI


PostLink    Posted: Fri Jan 16, 2015 3:32 am    Post subject: Reply with quote

The RNR, SNR and SSR designations describe the controller's available methods of output control. This is true of Mypin controllers (others may be different?) The first letter describes output 1, the second describes output 2/alarm 2, and the third describes alarm 1, and the letters "R," "N," and "S" stand for "Relay" (as in "coil,") "None," or "Solid State Relay -- SSR,) respectively. We need to control just one solid state relay (and one alarm output if you wish to activate the buzzer/alarm when the temp goes beyond set point) so either the SNR or SSR could be used but avoid the RNR.
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foomench



Joined: 21 Feb 2012
Posts: 710
Location: Longmont, CO

Drinking: Pinot barrel aged quad

Working on: Flanders oude bruin in barrel, Flanders red fermenting to refill the barrel


PostLink    Posted: Fri Jan 16, 2015 9:46 pm    Post subject: Reply with quote

I found the above text as well, but there is also an SNR type of relay, independent of the PID controller. You can find Schrack SNR relays at DigiKey.
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Kevin59



Joined: 03 Aug 2012
Posts: 1049
Location: Fort Collins, CO

Drinking: Imperial Brown Ale

Working on: Oatmeal Stout, IPA


PostLink    Posted: Fri Jan 16, 2015 10:05 pm    Post subject: Reply with quote

My unsolicited 2 cents... Go with the Auber SYL-2352 PID with SSR control for your build. You could save some money with a MYPin or other PID, but the Auber is well known here and seems to be very reliable.
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Yo_Pauly



Joined: 30 Nov 2014
Posts: 40
Location: New Richmond, WI


PostLink    Posted: Fri Jan 16, 2015 11:32 pm    Post subject: Reply with quote

I see that Schrack/TE Connectivity offers a SNR Slimline family of products, but they are merely relays and not controllers. I agree their use of the SNR acronym is confusing since their datasheets neglect to mention any further detail about it, but IMHO it simply is coincidental.
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jprince



Joined: 27 Aug 2014
Posts: 15



PostLink    Posted: Sat Jan 17, 2015 12:46 am    Post subject: Reply with quote

+1 for the Auber SYL-2352 PID.
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Firebrewmedic43



Joined: 23 Dec 2014
Posts: 101
Location: Tennessee

Drinking: barrel-aged Foreign Export Stout

Working on: Helles


PostLink    Posted: Sun Jan 18, 2015 7:55 am    Post subject: Reply with quote

Thanks for the input
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