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Firebrewmedic43
Joined: 23 Dec 2014 Posts: 104 Location: Tennessee
Drinking: barrel-aged Foreign Export Stout
Working on: Helles
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Link Posted: Thu Jan 15, 2015 11:00 pm Post subject: PID Temperature controller SNR v SSR |
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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: 704 Location: Longmont, CO
Drinking: Pinot barrel aged quad
Working on: Flanders oude bruin in barrel, Flanders red fermenting to refill the barrel
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Link Posted: Fri Jan 16, 2015 1:37 am Post subject: |
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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.
_________________ Brewery equipment photos (et al) here: https://picasaweb.google.com/114861423235799103704
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Yo_Pauly
Joined: 30 Nov 2014 Posts: 42 Location: New Richmond, WI
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Link Posted: Fri Jan 16, 2015 3:32 am Post subject: |
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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: 704 Location: Longmont, CO
Drinking: Pinot barrel aged quad
Working on: Flanders oude bruin in barrel, Flanders red fermenting to refill the barrel
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Link Posted: Fri Jan 16, 2015 9:46 pm Post subject: |
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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.
_________________ Brewery equipment photos (et al) here: https://picasaweb.google.com/114861423235799103704
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Kevin59
Joined: 03 Aug 2012 Posts: 1047 Location: Fort Collins, CO
Drinking: Imperial Brown Ale
Working on: Oatmeal Stout, IPA
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Link Posted: Fri Jan 16, 2015 10:05 pm Post subject: |
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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: 42 Location: New Richmond, WI
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Link Posted: Fri Jan 16, 2015 11:32 pm Post subject: |
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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
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Link Posted: Sat Jan 17, 2015 12:46 am Post subject: |
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+1 for the Auber SYL-2352 PID.
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Firebrewmedic43
Joined: 23 Dec 2014 Posts: 104 Location: Tennessee
Drinking: barrel-aged Foreign Export Stout
Working on: Helles
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Link Posted: Sun Jan 18, 2015 7:55 am Post subject: |
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Thanks for the input
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