2014年11月24日 · Generally a heating element uses burst firing of a SSR, i.e. ON-OFF for several cycle periods, heating elements do not respond in a fast manner to phase angle control or PWM. Also there is the possibility of electrical interference with rapid switching.

2013年7月30日 · Ein SSR mit Triacausgang schaltet sich erst bei Nulldurchgang des Stromes ab. Wenn Du nur ein 490Hz PWM Signal auf das SSR gibst schaltet das unabhängig von der PWM Verhältnis zwischen sofort und 20% der Periode der Wechselspannung zufällig ein weil die beiden Frequenzen nicht synchon laufen.

2011年7月18日 · Also most SSR cannot be used in PWM mode as they turn on and off only at AC zero crossings. As GM said most temperature controls using SSRs just turn the heat on and off at a very slow rate, think 1 second on, 10 seconds off kind of speed, and use the temperature sensor feedback to determine the on/off time ratio need to stay at setpoint ...

2015年10月30日 · Hi everyone. I am using an Arduino to control a PWM signal which is fed into a DC speed controller. It is then output in the same PWM wave form to the high current leads to control a high horsepower DC motor in whatever direction I choose depending on how I hook up the leads. Reverse direction and/or dynamic braking would be a nice feature to have for the application I intend to run this motor ...

2013年9月12日 · The reason in more detail (as I see it). The PWM on arduino runs at about 500 cycles per second. The AC line runs at 50 or 60 cycles per second. The SSR for AC loads, switches at 50 cycles per second, while your PWM is assuming the load switching 500 cps. The burst fire method that jackrae describes will be much better, and predictable.

2014年10月5日 · Hi, Thank you in advance for your help. I am new to Arduino world so please forgive my ignorance. I have a 5500W heater that sits on a 240VAC line with 30A breaker I control manually using Fotek SSR-40VA with potentiometer. I would like to automate this process and control the output of this SSR amperage using PWM. So in a nutshell I want to convert the variable dc control output from Arduino ...

2013年1月19日 · You can get SSR that accept a 0 to 10V signal and do all the phase stuff for you. You get that by putting the PWM output to a transistor connected to 10 or 12 V and then smoothing the resultant signal before feeding it into the phase controlled SSR. Do not play about with doing it yourself in the controller.

2012年11月12日 · Arduino PWM is too rapid around 500hz or 1khz, both unsuitable for interfacing with a standard SSR. You would need a SSR that has random turn on and zero crossing turn off ( like a G3MB-202PL, note the L) and then you would need a AC zero crossing timing reference input pulse for the arduino to read so you could calculate where in the AC cycle ...

2012年1月22日 · Hello. I have a project, where I need to use solid state relays(SSR) as light dimmer. I have 8 SSRs of them and I need to drive them with PWM signal. Mains voltage 230V, 50Hz. I know that I need to know zero crossing and sync my PWM output with it. I already have schematic for ZC detection and tomorrow I am going to buy parts I need. Arduino is ...

2011年11月28日 · In my case it's a 120v shaded-pole motor. At first I tried to get it working with a SSR salvaged from a copier--on the copier the SSR normally controls the fuser lamp. But unfortuantely, I had problems similar to what you describe. At first I tried just using PWM and the SSR but the result was terrible--much like you describe.