annealer wiring diagram?

[David Trent]

new here.

hoping to get some guidance on the basic components of the wiring of an annealer.

like, I know there are elements on one end, and 220V on the other, and computer controller somewhere in the middle, but what are all the relays and ohter parts, where do they go...how does it all fit together?

is there a drawing or diagram out there that shows this?

thank you.

[Pete VanderLaan]

Pg 242 of the 4th edition of Glassnotes shows an interesting drawing of a simple wiring diamgram Fritz did about forty years ago, but it's not very good.

Think of it like this:
Power comes in in two hot legs that go into a switching mechanism called a relay. You put the two hot leads on one side of the relay and then the outbound power on the other side which gets hooked to both ends of your 240V element. The relay is controlled by a solenoid if it's mechanical. Mercury relays last longer than mechanicals but are getting harder to legally use. When power is applied to the solenoid on the relay, the circuit closes and power flows to the element you have. When power is withdrawn, the circuit opens and power to the element shuts off. The controller has a thermocouple input on it which measures milliamps from the thermocouple. Your controller has adjustable settings on it which when the milliamps are matched with the thermocouple, power goes from the controller to the solenoid on the relay. When the controller to the gets turned on, or off,that in turn powers or shuts off the element.

It's just a big assed light switch with some bells and whistles. That's actually true of a moly furnace as well. It just has a rectifier in line which breaks the sine wave up into manageable bite size chunks.

If you can, just go and look in someone's control panel and follow the wires. It's not hard if you are remotely mechanically inclined.

[David Trent]

Thank you for the detailed response Mr. VanderLaan. I do not have a copy of that book at the moment, but I just ordered it online. you mention that the diagram is not very good, im hoping somebody here has a simple one or could draw one that is usable and post it. thanks again.

[Pete VanderLaan]

You are way too polite to survive in cyberspace David. I don't have the patience to draw stuff and then make prints of it in computerland. I am sure some deft soul will jump in here. Any simple electricity made easy book would show a diamgram of the principals I'm talking about. Follow the written word.

[Dennis Hetland]

This link will tell you way more about control circuits than you ever wanted to know. http://www.thelearningpit.comhttp://www.thelearningpit.com

[Ben Solwitz]

Check out the Digitry GB1 manual, it has a bunch of diagrams, starting around page 33:
http://www.digitry.com/pdfs/gb1aman.pdf
The Watlow 982 manual has more technical diagrams, if that's what you're looking for:
http://www.watlow.com/literature/pro...2001-12-07.pdf

[Rick Sherbert]

Originally Posted by David Trent

Mr. VanderLaan..

.........

[David Trent]

what are "SSR"s and "SCR"s, and where do they fit into the equation?

[Ben Solwitz]

Solid State Relays are electronic switches, like a mercury relay, but all electronic. Silicon Controlled Rectifiers are solid state devices for controlling current, they limit the power going to resistive heating elements like those used in moly or kanthal a1 furnaces or annealers. Most people don't use them for a1 elements but you can get better element life because you can run the elements continuously at 50% or 60% or whatever instead of switching them between 0% and 100%.

[Lawrence Duckworth]

Originally Posted by David Trent

new here.

hoping to get some guidance on the basic components of the wiring of an annealer.

like, I know there are elements on one end, and 220V on the other, and computer controller somewhere in the middle, but what are all the relays and ohter parts, where do they go...how does it all fit together?

is there a drawing or diagram out there that shows this?

thank you.

I’m new too, is there any chance you might post photos of the build?

[Dennis Hetland]

Thanks Jordan.


That's some nice looking equipment Lawrence.