looking into building a PWM controller to compare it to my pid box. Ideally an analog output from the plc could control the PWM but that is another story.
My question is for SSRs what is the frequency range that they should be ran at? Most of their data sheets do not give max switching speed or control frequency max(at least on the ssr that i have looked up thus far). If the ssr has built in zero crossing, would that limit the frequency.
I understand that i am just heating water and it probably doesn't matter that much but am curious on what frequency you guys are building your PWM boards.

My question is for SSRs what is the frequency range that they should be ran at? Most of their data sheets do not give max switching speed or control frequency max(at least on the ssr that i have looked up thus far). If the ssr has built in zero crossing, would that limit the frequency.
I understand that i am just heating water and it probably doesn't matter that much but am curious on what frequency you guys are building your PWM boards.
