pid controller /ssr wiring help

D

Dakota 11

Joined
Apr 14, 2006
Messages
252
hello,

So i have made a heat treat oven and my pid controller and 40a ssr came today. Know i read the directions but im still little fuzzy on the wiring part, since i got shocked really bad when i was a kid i want to double check. so looks like diagram reads like this. power comes into the ssr and gets screwed down, 2 wires come out the other side of ssr and hook into pid controller at 7 and 8 position.does that sound right? also diagram shows 110 vac to ssr ,going to 7/8 and then another 110 vac going to 9/10. thats were im conused at , also im hooking to dryer power supply all items are listed at being able to handle that amount of power and more dryer is 30 amp brker at the box. thanks for any advice, also wont hold any1 accountable if i shock myself lol.
 
First, without knowing which particular controller and seeing the hook up diagram, it would be impossible to say which terminals to hook to on the controller.

Solid state relays: two terminals for the trigger or turn on voltage. Usually has a label between them saying 3-30 VDC or something similar. One terminal marked positive or + and the other marked negative, - or com. You need to hook a DC voltage across these terminals to turn on the SS relay. Usually the lower the better as long as you stay in the recommended range. The other two terminals usually have a label between them reading "AC" The part number on the relay usually tells you the voltage and current rating i.e. 240D30 would be a 240 Volt ac max, if you look up the specifications it probably says 90VAC minimum, and 30 amps max. The two ac terminals are connected in series with what ever you are using for a load. In this case the heating coil in your kiln/oven. SS relays are also available with AC trigger voltages, check your specifications.



Some controllers supply a DC voltage (or an AC) output which can be connected directly to the trigger terminals (mind polarity! on DC) some controllers supply you with a relay contact output, which you will have to supply the proper DC or AC voltage from some other power source.

Hope this helps!

Jim Arbuckle
 
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