Monday, February 25, 2013

Programming the Auber PID

The Auber PID's user interface is not very intuitive.  It has 3 different settings menus and instead of having buttons to access them, you enter in a numerical code for each.

Code 0001 takes you to most-basic settings, namely setting your desired temperature and alarm temperatures.

Code 0036 takes you to performance settings and the parameter values the controller uses for its math.

Code 0089 takes you to system setup settings, such as mode of operation and type of thermal probe connected.

Auber states in their manual, "For safety reasons, the controller parameters are divided into three groups
with different pass codes. You should only give the code to those who have
the responsibility and knowledge of how to properly change it."  And then they go ahead and plaster the codes all over the Internet.  I'm not sure if that makes the setting any "safer", or just "more annoying".

Since you can use this controller in any generic system, there's a nice auto-tune feature that calculates all the function parameters for your given system.  I'm assuming I would have very different parameters for my crock pot than if I hooked this up to a blower on a charcoal smoker.

You can also use this controller in non-PID mode just like a traditional thermostat, which would completely defeat the purpose of having the device to begin with.

I did do the auto-tune, which on my aging crock pot took over an hour and I had to set the temperature probe to the 3-wire RTD setting.  A two-wire thermistor is the default.

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