Temp Controller TCG 6131P wiring diagram Updated!

[robinhood]

Earlier I have posted a wiring diagram for the TCG 6131P had a few problems, since than I got some help from the room, therefor this should be the correct wiring..

[Tech_Marco]

What is the power rating of your heater? Remember, the internal relay can handle up to 3A and you sure don't want to drive to that limit at all. If you want to drive a higher power heater, you need to install either an external relay or a SSR, driving by the internal relay. The input of a SSR usually range from DC 3V to 36V. A regular relay could be AC or DC 12V/24V, or AC 110V or 220V.

[robinhood]

I am using a 1"x50" long silicone rubber heater 5watt per. square inch, it appears I am well under the Max. for the controller.

[Tech_Marco]

That is OK. As long as the power rating is 100Watt or below, it should be fine

[mac]

Looks better, but 1" x 50" x 5 watts/inch = 250 watts (not 50 watts). I still think it makes sense to use an external relay to control power to the heater. Why risk burning up the PID for want of a $5 relay from RadioShack.

[robinhood]

I was told by one of the lightobject rep as long as I stay under 360watt within 20watt or so I should be ok....right now I am at 250...

[Tech_Marco]

360W is peak and you really don't want to go that far. The main issue is the 'contact', or the melting point of the relay. 250Watt = 2A current, could casuse tremedous temperature when it's strike. If it's for normal use (non frequent usage) it shoud be fine for 250W.

Remember, the 250W you got is an average rating. But the first momemnt it conduct current, the glitch could be 2~3 times high. It's a "glitch" and you should taking that into account. For the temperature control that could trigger tenth times per minute, for safety issue I suggest you to go for an external relay like a 15A or a SSR (without physical contact). The relay could be either a DC or AC type, it all depends how you drive it by the internal relay. Just my thought.

[robinhood]

Thanks for your input! I will consider it very seriously, this should be a good time to do it before I put it to actual use..

Thanks,

[Tech_Marco]

I like your diagram. It help other folks to understand how to hook things up, especially the relay conneciton. If you need help for adding an external relay or SSR, let me know and I can do a draw for you. But it's better you send your drawing to me and let me modify it. I'm just too lazy to redraw the whole thing. (caught a minor cold now)

[robinhood]

I understand! and would you recommend a relay from your company, I am not sure but I think I saw one there which would work for under $15.00 if so would you let me know? Huge thanks for your info...

[Tech_Marco]

This 25A will work for you. It need DC 3V~32V to drive it. You can just add a ac adapter to provide DC voltage and route the positive to one side of the controller relay (N.O.) and having the other side connect to the Positive leg of the SSR. Then connect the Negative let of the SSR to the Negative pole of the DC adapter.

http://www.lightobject.com/25A-Solid-St ... t-P61.aspx

[mac]

This 25A will work for you. It need DC 3V~32V to drive it. You can just add a ac adapter to provide DC voltage and route the positive to one side of the controller relay (N.O.) and having the other side connect to the Positive leg of the SSR. Then connect the Negative let of the SSR to the Negative pole of the DC adapter.

http://www.lightobject.com/25A-Solid-St ... t-P61.aspx

If he bought a $5 110 volt relay from Radio Shack, he wouldn't need a DC power supply.

[robinhood]

Thanks a bunch guys... will start with the radio shack relay and see what happens.
Your both very helpful !