triac phase control - Page 3 - Electronic Circuits Projects Diagrams Free

ronald_jansen · 24th October 2009, 12:12 PM

No, I am affraid that he is longer here.

I myself am working in the range 200-900Watts. This works quite well with a toroid transformer and phase cutting.

nemo50 · 24th October 2009, 11:32 PM

Thank you all for your ideas. I'll use 12mm alu plate plus reinforcement because of the all pressure from vacuum. So there will be some mass to heat for sure. The slower control loop i will try for sure. For the first test I make a smaller model with 1/10 of the power/mass and test the stability first. This is a 3 phase system, So each phase is about 5.3kw only. The SSR crydom says switching at zero crossing in the datasheet. So basicly I have K type thermocouple (thinking about 2-4! to average the reading in alpha PLC software/hardware and make it somewhat bulet proof, sensors will be burried in the platen not too close to the incoloy elements,and from various sources i will add a second overheat protective system. In case of the SSR manfunction they stay conducting i was told. So I guess it is really a must to add some kind of temperature limit switch in case something fails. Will keep you informed but this is a projet for more than 1 or 2 months so don't expect many posts any time soon, I'm also a happy father now.

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24th October 2009, 12:12 PM	#31
ronald_jansen	No, I am affraid that he is longer here. I myself am working in the range 200-900Watts. This works quite well with a toroid transformer and phase cutting.

24th October 2009, 11:32 PM	#32
nemo50	16kw heated platen, pid regulation Thank you all for your ideas. I'll use 12mm alu plate plus reinforcement because of the all pressure from vacuum. So there will be some mass to heat for sure. The slower control loop i will try for sure. For the first test I make a smaller model with 1/10 of the power/mass and test the stability first. This is a 3 phase system, So each phase is about 5.3kw only. The SSR crydom says switching at zero crossing in the datasheet. So basicly I have K type thermocouple (thinking about 2-4! to average the reading in alpha PLC software/hardware and make it somewhat bulet proof, sensors will be burried in the platen not too close to the incoloy elements,and from various sources i will add a second overheat protective system. In case of the SSR manfunction they stay conducting i was told. So I guess it is really a must to add some kind of temperature limit switch in case something fails. Will keep you informed but this is a projet for more than 1 or 2 months so don't expect many posts any time soon, I'm also a happy father now.