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Old 03-21-2013, 04:22 PM   #1
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Default SWA-2451 PID w/Timer

Greetings, everyone and thanks in advance for the help.

I brewed my first batch of beer last weekend on my recently completed eHERMS system.

I had issues with the PID that controls the HLT.

It is an Auber SWA 2451 w/ timer.

I thought I had it programmed to AT and had the temp set to 154....

it went up through that while brewing, I was able to catch it before it got to high, but now need to figure out what needs to be done to correct the issue. If anyone has experience on this controller please let me know. I want to brew again, but would like to resolve this issue first.

I am sure that it it is something simple that I either did or failed to do. Thanks for the help, all the best.

RLTW.



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Old 03-21-2013, 05:51 PM   #2
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I have two of the SWA-2451 PIDs and I don't recall auto tuning being an issue. The manual does state that if your system is slow to respond it will take the process longer to complete. I'd suggest you run a full volume water test. Auto tuning will exceed your SV as the process has to learn how quickly your system losses heat as well as how quickly it is added.

The diagram in the manual paragraph 4.2.3 indicated the SV will be exceeded at least twice and the text mentions it could occur as many as 3 times while AT is running



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Old 03-21-2013, 07:20 PM   #3
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Quote:
Originally Posted by stlbeer View Post
I have two of the SWA-2451 PIDs and I don't recall auto tuning being an issue. The manual does state that if your system is slow to respond it will take the process longer to complete. I'd suggest you run a full volume water test. Auto tuning will exceed your SV as the process has to learn how quickly your system losses heat as well as how quickly it is added.

The diagram in the manual paragraph 4.2.3 indicated the SV will be exceeded at least twice and the text mentions it could occur as many as 3 times while AT is running
Thanks stlbeer, I will fill it up and run a few cycles through to see what happens.
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Old 03-23-2013, 01:55 AM   #4
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Still having issues any one have any thoughts?

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Old 03-23-2013, 03:46 PM   #5
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I'll post my PID settings when I get a chance.

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Old 03-23-2013, 07:39 PM   #6
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Quote:
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I'll post my PID settings when I get a chance.
Thanks
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Old 03-23-2013, 10:06 PM   #7
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Ok, here are the ones that mean anything. I hope they work for you. These are from my RIMS PID. I have a 2000W 240v element in it running at 240v.

SC 2.0
P 7.9
I 89
D 6
t 2
HY 1.0
HY1 1.0
HY2 1.0
dP 1
COOL OFF
Sn PT
CF F

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Old 03-23-2013, 10:30 PM   #8
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Quote:
Originally Posted by stlbeer View Post
Ok, here are the ones that mean anything. I hope they work for you. These are from my RIMS PID. I have a 2000W 240v element in it running at 240v.

SC 2.0
P 7.9
I 89
D 6
t 2
HY 1.0
HY1 1.0
HY2 1.0
dP 1
COOL OFF
Sn PT
CF F
Thanks stlbeer !!! I will check this against what I have set and got from there.
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Old 04-16-2013, 06:12 PM   #9
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Still having issues with my PID over shooting the set temps...any ideas, thoughts comments? need to brew another batch but would like to get these issues solved! Anyone else have and are using this PID? Thanks in advance.

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Old 04-17-2013, 07:04 AM   #10
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what is your overshoot, a degree or two or ten?



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