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Old 04-17-2012, 08:07 PM   #1
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Default BCS 460 is the bane of my existence

Okay, Here is the project:
BCS 460
24VAC Honeywell Gas valves w/intermittent spark igniters
SSR 4 relay 5V module

Note: this system was working and the same wiring has worked for other brew stands we have built (BrewSteel.com)
All grounds are tied together
24VAC Transformer runs power to panel mounted switch
From switch power goes to N.O. relay contact
Common relay contact connected to gas valve ignition module

Using Output 0 (tried 0 - 3) manually
- Nothing attached to the BCS - BCS stays connected Output 0 remains on
- BCS attached to relay - BCS stays connected Output 0 remains on
- BCS attached to relay, Gas Valve igniter NOT grounded - igniter fires, BCS stays connected Output 0 remains on
- Direct jumper between relay contacts, igniter grounded - igniter fires
- BCS attached to relay, Gas Valve igniter grounded - igniter fires for a split second, BCS disconnects

I have tried 3 different relay modules

I am am stumped. Please help if you can.

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Old 04-17-2012, 08:47 PM   #2
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Hoppy,
Email me some pics and the wiring diagram and I'll take a stab.

Also, what model valve?

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Old 04-17-2012, 09:47 PM   #3
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Just looked it up. You need to keep everything on the 5v side of the house isolated from the igniter/24v side.

Think of the BCS grounds as -5v commons instead of actual grounds.

We're talking 250ma and 5v Max.

Any more than that on the BCS -5v and you could let the magic smoke out of the box...

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Old 04-17-2012, 10:00 PM   #4
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@#$%!!! SSR relay module... pretty sure there's voltage feeding back through the contacts...

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Old 04-17-2012, 10:42 PM   #5
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Quote:
Originally Posted by OneHoppyGuy View Post
@#$%!!! SSR relay module... pretty sure there's voltage feeding back through the contacts...
SSR <> contacts

Are you sure it's an SSR relay or is it a contact relay? If it's a standard contact relay, then you're getting voltage spikes back through the coil.
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Old 04-17-2012, 10:47 PM   #6
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4 SSR Relay Module/board
only thing left in the equation

and you pretty sure their SSR relays... I have many years experience in controls systems automation dating back to the mid '70s

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Old 04-18-2012, 03:23 AM   #7
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hey JonW... look familiar?

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Old 04-20-2012, 11:53 PM   #8
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TGIF!!
Fixed!! Replaced the relay module with puck style SSRs and we have contact!!

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Old 04-21-2012, 12:54 AM   #9
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Can you show the two different relays that you used?

I used a small DC-DC SSR IC for my igniters. It was a pretty simple setup as they are the BBQ style ones powered by a 1.5V battery.

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Old 04-21-2012, 01:24 AM   #10
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Gas Valve

Ignition Module


Igniter/Pilot assembly

SSR Relay module (Left) Puck Style SSR (Right)

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