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A comment on Making a heat treatment oven. Parent comment

Re:Making a heat treatment oven by dkdk8283 on Saturday October 17, 2020 @03:53PM (#24812689)
I used an off the shelf controller for my pump. About $100 for a 3A VFD not including transducer
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Re:Making a heat treatment oven by vvanders on Saturday October 17, 2020 @05:47PM (#24813666)
Yeah, most pumps are AC and this was DC so I didn't have a off the shelf solution.

With a PLC, analog input for the pressure sensor and SSR to drive the PWM it was fairly straightforward to put together. Hardest part was getting the PID tuning right but even that only took a bit of time.

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Re:Making a heat treatment oven by dkdk8283 on Sunday October 18, 2020 @07:54PM (#24822115)
What PLC did you use? I’m looking to build a load shed controller for another project. I’ve been looking for something simple.
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