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Old 01-07-2009, 10:41 PM   #1
The Pol
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Default PID Cycle time help...

So, I am playing with my PID... on my newly updated rig. It is from Auber, the one that many other ppl are buying here.

I am happy with the performance, but I have a question about cycle times when in manual mode. It sayes that "t" is the cycle time, adjustable between .5 - 125 seconds. When "t" = 0 the cycle time is .5 seconds it sayes. So, I try 3, 4, 5... and guess what, the cycle time is ALWAYS 5 seconds. Not bad, I can still boil at 65% pretty nicely, but what gives?

I would love to cut the cycle time in half, but no matter what I set it to, it is 5 seconds or more. When I set "t"=10... it is 10 seconds... but once I get under "t"=5, it is always 5 seconds. UNLESS I set it to 0,1 or 2... THEN the cycle is 60 seconds. Why?

Here is the manual... am I missing something?
http://auberins.com/images/Manual/Ma...sion%203.4.pdf

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Last edited by The Pol; 01-07-2009 at 10:48 PM.
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Old 01-07-2009, 10:57 PM   #2
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What model number is yours?? I assume that since your controlling a SSR that you have logic output control.

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Old 01-07-2009, 10:59 PM   #3
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SYL-2352

It is nice, but I cannot for the life of me figure out how to get less than a 5 second cycle time.

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Old 01-07-2009, 11:11 PM   #4
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Hum....

As the manual reads, other then 0, each number would represent its value in seconds. IE. 3 = 3 seconds. Now unless there is a set delay value, then i'm just as stumped as you are

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Old 01-07-2009, 11:13 PM   #5
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Yeah... I read it several times... makes no sense to me. Like I said, I can boil well at 65% with no real pulsing, but it would be cool to get a 3 second cycle time. Maybe I can email Auber.

EDIT: I just emailed Auber, I will post what they say when they respond. The manual acutally sayes that if you are using an SSR, to set the cycle time to 2 seconds or less for better control. Well, I wish I could!!

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Old 01-07-2009, 11:20 PM   #6
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You are trying to set the output cycle time per the manual, thought it was the calculation time delay but checked manual and found my guess was wrong. What is the OP-A value set to? is it set to 0.

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Old 01-07-2009, 11:25 PM   #7
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FIXED it... I just decided to change the Proportional Constant from the defualt of 500 to 0.... bang... I can set any cycle time I want now! It is werkin fine. Now my output cycle is set at 1 second and there is NO pulsing!

BTW I ran the boiler for an hour at 65% and the heat sink barely got warm to the touch!

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Old 01-07-2009, 11:27 PM   #8
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AHHHH CRAP!! you beat me to it... was going to say to set P = 1

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Old 01-07-2009, 11:36 PM   #9
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Ahhh, I can boil nicely at 60% power with the 5500W RIPP and still maintain 209F in the kettle.

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Old 01-07-2009, 11:48 PM   #10
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Now doesn't the PID in auto mode allow for ramp back after set points are met?

If nothing else, setup a small buzzer to alarm when say.... 210 degrees is met.

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