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Old 11-20-2012, 01:26 PM   #1
jCOSbrew
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Default EBCIII inspired eBIAB build

Competed my eBIAB control panel inspired by several of the threads on the forum. Wanted manual and PID control like the EBCIII as well as some additional features like the e-stop, alarm, and auto mode for the pump. A phase angle ssr allows manual control with the potentiometer and the pid uses relay output and simple on/off control of the 220v contractor. Test run went well and this should save some time on brew day. With recirculation I hit the process temp within 1 deg f.

For those who eBIAB, do you use the element and recirculate during the mash or just insulate the kettle? My AL kettle will lose a couple degrees every 15 minutes.









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Old 11-21-2012, 03:09 AM   #2
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Quote:
Originally Posted by jCOSbrew
Competed my eBIAB control panel inspired by several of the threads on the forum. Wanted manual and PID control like the EBCIII as well as some additional features like the e-stop, alarm, and auto mode for the pump. A phase angle ssr allows manual control with the potentiometer and the pid uses relay output and simple on/off control of the 220v contractor. Test run went well and this should save some time on brew day. With recirculation I hit the process temp within 1 deg f.

For those who eBIAB, do you use the element and recirculate during the mash or just insulate the kettle? My AL kettle will lose a couple degrees every 15 minutes.
If you can recirculate you should have no problems using the element to maintain mash temps. I'd love to build a 3v setup like kals, but been researching this and I'll probably end up with a eBIAB setup just like this. Just wanted to say great work, and be sure to post pics of the whole setup!


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Old 11-21-2012, 03:27 AM   #3
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Do you have the schematics for the wiring? I'm starting something very similar and would love to see what your versions looks like.

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Old 11-21-2012, 03:40 PM   #4
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See schematic below. Note that my design makes the following assumptions:

1. Use of PID in ON/OFF mode (or long duty cycle), PID does not pulse width modulate the SSR.
This setup allows me to use the voltage resistance SSR (phase angle control) to adjust the power/intensity in manual or auto mode and use the PID relay output to enable/disable the AC contactor and heating element based on temperature. In my test run I ran the recirculation and hit the strike temp within 1 deg F. Form what I understande, the EBCIII PID is configured the same way. During the mash I will also be able to use the minimum power setting (about 2000Watts) to prevent scorching of the grains.

2. Use of a low power 15W pump, <1amp at 120V AC.
This allows me to use the wiring scheme shown below which includes the PIDs internal relay (3A max) for the pump "Auto" feature, the pump is on when the element is on. External relays and different wiring are required for a higher power, higher current pump like the March or Chugger pump.

Also note that the PID wiring is for the MyPin TA4, the popular Auberins PIDs have a different pin out.



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Old 11-21-2012, 08:02 PM   #5
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Is the box plastic - where'd you get it and roughly what did it cost? (I LIKE it!)

How are you getting rid of the heat generated by the SSR?

I really like it. Cutting square holes in metal is really something I'd like to avoid so I've been looking for a nice plastic option like this. (I also know its way safer to have a separate control box than make a combined spa breaker panel box + control box.)


Adam

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Old 11-21-2012, 08:36 PM   #6
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Ssr heat is TBD. Will add a fan or external heat sink if necessary.

Enclosure is a Bud Nema 4x about 11x8x6. It was $41 shipped on amazon and has provisions for a back panel or internal din rail mounting and came with external mounting hw. Round and square holes are much easier with PVC.

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Old 11-23-2012, 08:15 PM   #7
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Did a 5 gal batch and ssr temp was 60C/200F max so should be fine. Larger batches or higher power element may require active cooling.

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Old 11-23-2012, 08:31 PM   #8
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Old 11-23-2012, 11:13 PM   #9
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Quote:
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Any pics of the system in action?
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Old 11-24-2012, 09:43 PM   #10
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Added labels to panel and "wireless" timer.
First eBIAB batch beat my target SG.







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