2 ms·
Does the optional dimming of the boiler make a difference in your design? Mine just fully turns on and off all the time, and I reckon dimming would probably be
by jmiserez 9y ago
Does the optional dimming of the boiler make a difference in your design? Mine just fully turns on and off all the time, and I reckon dimming would probably be easier on the power grid. 2000W on/off vs ~80W average (I measured) is quite the difference.
- the-dude 9y agoYour measurement seems to match up. It makes a difference in the fact the meCoffee PID can adjust its P response 100 times a second, it can react much faster. Dimming such heavy loads is not within spec in all jurisdictions though. It also includes normal interval behaviour.
- lmilcin 9y agoI am using SSR with zero crossing and it makes much difference. First, I am dithering the boiler power (the power is applied to the boiler on only some AC cycles), I am basically deciding per cycle whether I want my boiler turned on for the next 1/100th or 1/120th of the second. I am already running my model about 50 times per second (not using PID) so that's ok. Being able to apply fractional power to the boiler means it is quiet and much less scale deposits. Also due to the zero-crossing control I have much less electrical noise. Turning the boiler fully-on blindly causes electrical noise which is not nice for other devices (my Baratza Sette grinder turns on spontaneusly when this happens).
- deleted 9y ago[deleted]