SSR with analog input

[darkstarone]

Can the duet toggle an SSR such as this https://www.mouser.com/ProductDetail/Crydom/MCPC4850D?qs=%2Fha2pyFadug3rif9%252BRZld2Q4qtEC9h3DIP4ENu%252BkFGk%3D

Which expects an analog control voltage signal?

I'm trying to look for a proportional control SSR to control a heater inside of the chamber of a large machine which is causing some light flickering when in PID mode. I'm thinking this is better suited to the heating element load and may help. My understanding is that an SSR with built in snubber will not help with a resistive load.

Thanks

[dc42]

What is is that is flickering?

[darkstarone]

All of the lights in our shop and other lights on other circuits. Does not occur whatsoever in bang-bang mode. It seems to pulsate in tandem with the frequency when we change it, it visible to the eye.

[dc42]

I've looked at the data sheet. Does your system include a DueX5 or DueX2 or external stepper driver breakout board? If so then I think that SSR will work using Option A wiring and a simple RC filter between one of the servo outputs and the SSR input.

[darkstarone]

No it does not, but we can order one if that is a valid option, thanks for checking the datasheet.

[dc42]

If you don't have a DueX then you could use a 74HCT02 gate to level shift the signal to 5V. Or you could use this PWM to voltage converter https://www.ebay.co.uk/itm/PWM-Voltage-Converter-Module-for-Digital-to-Analog-Signal-0-100-to-0-10V/401532069726?hash=item5d7d2d275e:g:kLgAAOSw~bhb8ET4:rk:6:pf:0 (note this one says it works with a 3.3V input signal).

[darkstarone]

@dc42 Thanks for that detailed information here as well as the other thread, this is why I buy duet boards and will continue to do so for all of my machines in the future. For now, we are going to try just leaving the blower fan on at a really low subtle speed and see if that's enough to get away with using bang bang on the heating element and not cause the thermal expansion or banding in the prints. If not then we'll explore this route.