120v heating blanket wiring
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120v heating blanket wiring
I am dieing here. I have a 120v heating blanket from MEI, a SSR, PID, fuses and a switch but I can't seem to get it wired properly to work. Can anyone out there draw up a wiring diagram for running a heating blanket off 120v?
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doughboyshredder
- Posts: 1354
- Joined: Mon Sep 17, 2007 7:37 pm
That schematic is a bit confusing. The ssr is not labeled correctly (in should be coil + and -, out should be labeled no and c) and a contactor is completely beyond unnecessary as the ssr is already rated for high enough voltage and amperage .
Also, you need to verify that your pid is set up for drive voltage and not relay output. I use relay output and a transformer, but I am weird and like to be able to control different things.
basically you wire 115v through a switch. Both legs power your pid. One leg goes to your blanket. One leg goes to your ssr. The output of the ssr goes to the other side of your blanket. Your drive voltage or relay output goes to the coil on the ssr. The thermocouple connects to the back of your pid.
Also, you need to verify that your pid is set up for drive voltage and not relay output. I use relay output and a transformer, but I am weird and like to be able to control different things.
basically you wire 115v through a switch. Both legs power your pid. One leg goes to your blanket. One leg goes to your ssr. The output of the ssr goes to the other side of your blanket. Your drive voltage or relay output goes to the coil on the ssr. The thermocouple connects to the back of your pid.
Thanks for the explanation. The DP contactor had me confused as to whether it was necessary. Turns out I had the set up wired correctly. It was the PID that was bad. The company I ordered it from sent me the wrong model. I figured out a work-around until they replace the PID by closing the DC circut on the SSR using a 9 volt battery. It works, I just have to manually connect and disconnect the circut based to maintain the temperature. It just means I have to stand there and watch it but at least it's working. Thanks for your replies.
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doughboyshredder
- Posts: 1354
- Joined: Mon Sep 17, 2007 7:37 pm
no need to replace your pid. Just get a cheap plug in cell phone transformer. Wire the lead with no line to the negative on your ssr. Run the other wire through the common and no on your pid to the positive on your ssr.
I prefer it this way because drive voltage off the pid is only 3 volts. Having it as a relay you can also drive led's or any other stuff.
I prefer it this way because drive voltage off the pid is only 3 volts. Having it as a relay you can also drive led's or any other stuff.