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Old 03-29-2009, 06:37 PM   #41
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[QUOTE=Boerderij_Kabouter;1005683]This is a great thread! Here is the diagram for a dual stage LOVE TSS2-2100


What does r0, c1, and c2 stand for?



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Old 03-29-2009, 09:15 PM   #42
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Quote:
Originally Posted by dunleav1 View Post
What does r0, c1, and c2 stand for?
They are program codes within the controller. When you start up the controller, you press and hold the set button to access the controllers programing. Pressing "set" again cycles through the various settings and parameters that one can use to customize the operation of the controller.

r0, c1, and c2 are three that set the operating mode. The manual that comes with the controller explains each parameter and what it does.


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Old 03-31-2009, 01:37 AM   #43
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I don't have the paperwork that came with LOVE TSS2-2100.
I have it setup but don't know how to set the differential or
what the c1 and c2 operating modes are.
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Old 03-31-2009, 12:39 PM   #44
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Here is the service manual:

http://www.dwyer-inst.com/PDF_files/TSS2_iom.pdf

Post #34 of this thread lays out in detail how to program the controller.

Prosit!
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Old 04-01-2009, 02:23 AM   #45
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Default Tss2

Thanks for the manual.

I have the controller setup and wired into my freezer, but I haven't wired in the heating element yet. So I haven't had to change from the default setting for SP2 yet - because I haven't tested it.

I have P5 set - for one probe.
I set SP1 and SP2.

(ie) for a fermentation temp of 50.
I set SP1=50 and SP2=48.

c1=dir (default)
c2=inv (non default)

So - I need to change c2 to be inv so the c2 goes hot when the probe reads 48 or below?

Thanks,
JD
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Old 04-01-2009, 05:24 AM   #46
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Quote:
So - I need to change c2 to be inv so the c2 goes hot when the probe reads 48 or below?
Correct

For your setup to work set r0 = dep
You can set SP2 = 0 and r2= 2 without worrying about SP2 and have the same result.

If you need to coast toward the set point like I require SP2 can be less than 0.


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ClaudiusB
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Old 04-01-2009, 11:11 PM   #47
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What do you mean by:
"If you need to coast toward the set point like I require SP2 can be less than 0." ?

You can set SP2 = 0 and r2= 2 without worrying about SP2 and have the same result.

I guess I still don't understand what the r2 setting does.

I'm testing my setup now and it looks like my secondary controller is always on.

I set SP1 to 65 and I set SP2 to 40. When the temp hits 65 - SP1 output becomes hot, but it seems SP2 output is always hot.

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Old 04-06-2009, 04:45 AM   #48
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Here are your answers.

Cheers,
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Old 04-06-2009, 12:57 PM   #49
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Bravo! Thanks a ton ClaudiusB, that is a way better way to run things. I will be using SP2 = -1.5 as well. Great work!
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Old 04-06-2009, 03:31 PM   #50
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Boerderij_Kabouter tanks.

Quote:
I will be using SP2 = -1.5 as well.
My parameters are set according to my heater performance, overshoot.
The heater only heats until the liquid temp rises by 0.1F, not until it reaches SP1.

Here is an example how my setup works.
SP1 set to 68F, r2 set to 0.1, SP2 set to -1.4F

Heater relay #2 turns on when probe temp is below SP1+SP2-r2
or 66.5F and off SP1+SP2 or 66.6F.
Now the heater's mass and insulation losses slowly raise the temp to the target temp of SP1 or 68F without over shoot.

Cheers,
ClaudiusB


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