Timeline for How to PID control a heater with SSR, Raspberry Pi and python
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Apr 18, 2022 at 9:27 | comment | added | Seamus | @MarcoBobinger: I think you're correct. But for a heating application, I don't know why an SCR wouldn't work. But whatever you use, use it carefully - 230VAC is lethal! | |
| Apr 18, 2022 at 8:58 | comment | added | Marco Bobinger | To my knowledge the SSR that I'm using, the SSR-40DA, is based on a Triac. | |
| Apr 18, 2022 at 8:28 | comment | added | Seamus | Yeah - changing the controller would allow use of a PID solution. I don't know your application (other than a water heater), but that sounds like a lot of current to be switching which brings another set of issues. Have you considered Triacs or SCRs? | |
| Apr 18, 2022 at 8:18 | comment | added | Marco Bobinger | Thank you at @Seamus I'll go for a bang-bang controller with the current setup. I could also use a DC-DC regulator for 230V-24V and then use PWM modulation on MOSFETS that are fine with a voltage range of 4-32V. Anyways, the bang-bang will do the job for my application I think. | |
| Apr 18, 2022 at 8:16 | vote | accept | Marco Bobinger | ||
| Apr 16, 2022 at 22:46 | history | answered | Seamus | CC BY-SA 4.0 |