Author Topic: ControLeo2 and T962A  (Read 2332 times)

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Offline microcircuitTopic starter

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ControLeo2 and T962A
« on: November 22, 2016, 03:15:14 am »
Hi, can anyone provide any technical advice please.
I already own a T962A oven which has an inaccurate temp/timing controller. I am therefore looking at fitting an accurate controller so that it is a useful SMD oven. Has anyone any information if the ControLeo2 would be suitable for the T962A. A company called ESTechnical were providing a suitable controller however they are unable to supply the controllers since they had a fire at their premises.
Phil.
 

Offline Gary.M

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Re: ControLeo2 and T962A
« Reply #1 on: November 22, 2016, 03:32:12 am »
I've built an oven with the ControlLeo2. I can vouch for its capability, and the results obtained. Essentially you need to adequately insulate the oven (ceramic fibre blanket works well) and have enough element power to do the job. I assume this has that. You have independent control for 2 sets of elements (say upper and lower) and another control for a booster element or a convection fan.

 
 
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Offline adecker

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Re: ControLeo2 and T962A
« Reply #2 on: November 23, 2016, 05:12:35 pm »
In theory this would work; however, would probably be more simple to just get the 20 dollar toaster oven and modify it.
 

Offline ovirt

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Re: ControLeo2 and T962A
« Reply #3 on: November 23, 2016, 05:36:10 pm »
I'm not familiar with the T962A or its controller so I am commenting largely in ignorance. However note that the ControLeo2 uses an open-loop temperature control technique and only has 1 adjustable setting for reflow (without hacking the source code) - the target peak reflow temperature (unless I've missed recent updates to the code). It may be perfectly adequate for your needs, or you may find it lacking if the T962A's stock controller offers any kind of sophistication.

ControLeo2 will run on an Arduino and it's easy enough to get one running to give it a trial - my DIY oven currently runs it on an Arduino clone, with a DFRobot style LCD/keypad for display and control, a Maxim SPI thermocouple adapter and a triac + opto-driver for the heater element control. Of course it's easy enough to use OTS Solid-State Relays with logic-level inputs for the element(s) control. To get that running just required adapting the code to the keyswitch input and the thermocouple adapter (from memory).

What is it about the existing controller that leads you to call it inaccurate? I know I'm not overly happy with the current behaviour of my setup. I use a separate thermocouple-based temperature meter to compare with the ControLeo2 temperature, and the two are rarely in agreement. In particular with a reflow peak termperature setting of 212C the meter gets to a peak of 225C, while the ControLeo2 peaks at about 215C.
 


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