Got a Programable PID for the HT Oven

Joined
Feb 17, 2007
Messages
3,375
Decided to get a PID I could program ramps and soaks with

Got the AUBER SYL 2352

Made a new control box and wired and mounted everything up including new Thermo couple.
After reading the instructions and trying to understand them I started messing around with it. Finally got it thru my head :roll: that the time of a cycle is the time the controller will try to get your oven to the next steps temp by moving the SV up at a rate that takes the step time and that unless you program two steps with the same temp it will never stop at any temp. Your measured temp will lag a bit behind the SV unless ramp is very slow.

Set it up to go to and hold 1750f and and worked my way up to see if .999 silver in a Stainless steel cup would melt at its reading of 1763f. Really close.

Anyway I set up a couple programs and ran some D2 blades that came out at 66 after a dry ice bath and pre temper and 61 tempered. I only have a small Ames tester, but, it comes real close on the test block.

Here are my programs My oven is 22" deep and 5"x5" with 4400 watts so it can heat quickly. Faster than any of the times in programs. My oven is also well insulated with soft brick then a layer of Koawool between bricks and outside walls. Welded wall seams and gasket on to cover with tight door help keep decarb down on carbon steels. I use foil on stainless. I could keep a Argon purge on it with the Carbon as I have a stainless tube plumbed to the interior and a flow meter and bottles for my Tig Rig and wire feeds.

D2 Program

Step---------Start Temp-------Time to next Step--------- Explanation

C1-----------------28-----------------15 min----------------- ramp to 1500

C2-----------------1500--------------25 min--------------- --hold at 1500 for 25 min

C3-----------------1500------------- 10 min-----------------ramp to 1800

C4----------------- 1800--------------6 min ----------------- slow ramp to 1850 (helps prevent overshoot)

C5----------------- 1850--------------300 min -----------------soak at 1850 with spare time

C6 ------------------1850 ------------5 min---------------------Shut off

C7----------------- 0


1095- W2 ETC Program

Step ---------Start Temp---------Time to next Step--------Explanation

C8-------------20 -----------------15 min ---------------- -----Ramp to 1450

C9-------------1450-----------------20 min -----------------Hold at 1450 to stabilize oven

C10------------1450---------------- 6 min--------------------Slow ramp to 1500

C11------------1500-----------------60 min-------------------Soak at 1500 with spare time

C12------------1500---------------- 5 min---------------------Shut off

C13------------0


D2 Anneal

Step---------Start Temp---------Time to next Step-------Explanation

C15------------0--------------------25 min----------------- Ramp to 1650

C16-----------1650----------------120 min-----------------Soak at 1650

C17-----------1650-----------------360 min----------------slow cool to 1425(approx 33f per 1/2hr)

C18-----------1425-----------------240 min-----------------soak at 1425

C19-----------1425-----------------5 min---------------------shut down to cool in oven

C20-----------0

PS. the temp for the first step in a program isn't that important as long is it is somewhere near ambient. It gets cold around here LOL

Comments and or recommendations Welcome

Here is a list of helpful hints and stuff I wrote out to help me keep it figured out
Instruction Hints

1 remember the time after a step is time to next temp

2 to soak you must have 2 steps at same temp as desired soak temp

3 the set temp will keep moving at the rate of time allowed by your time to next temp and the oven temp will try to keep up, but lag behind depending on how fast the ramp is.

4 Use auto tune for a critical set point temp and it will adjust its operation to hit that temp. I used 1763. Will it hold more than 1 auto tune Program????

5 if you are programing while oven is running and are moving through the steps it will stop at the step currently running and you need to hit the AM button to move past

SET STEPS Press A/M key move thru steps with SET key Press and hold A/M and press V key to back up

START press down button for 2 seconds (A/M lights up)

STOP press up button for 2 seconds (A/M light goes off)

HOLD down button 2 seconds while running a step (A/M light flashes)

RESTART at STEP 1 press up for 2 seconds to STOP then down for 2 seconds

RESTART CURRENT STEP hold down button and press up button

JUMP to a STEP { Press SET Key Briefly to display current step Press up or down key to move
START at A STEP {to desired STEP

CHECK CURRENT STEP Press Set briefly

CHECK CURRENT STEP TIME Press Set Twice

AUTO TUNE Press SET 2 second while in Manual mode (A/M lite off) and then down to At hit set and the V to 1 or 2

EXIT PROGRAMING Press SET and A/M Keys at same time of just watt 10 seconds and it will exit automatically


My old PID, SSR and thermocouple are now set up in a box with a 110v outlet to run a reworked toaster oven for tempering or I could plug my forge into it if I install the solenoid valve I have. Used Stacy's idea for a portable multi use setup
 
Back
Top