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Old 02-20-2010, 10:18 PM   #1
TBLbrewer
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Can someone who understands PID's and electricty look at this and tell me if I need and SSR with it, and explain the wiring diagram. I plan to use it with at 110 volt element and use a thermocouple.

http://webbuilder2.asiannet.com/ftp/1752/UM90901B.pdf

 
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Old 02-21-2010, 12:34 AM   #2
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The relay on the PID is only rated 3A so you will need an SSR or contactor to switch the load.

You would connect your power wiring for your element through a SSR or contactor and use terminals 8 and 9 to trigger/switch the SSR or contactor.

I use a contactor with a 120v coil. I have not used SSR's and am not certain on their switching requirements.

 
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Old 02-21-2010, 01:50 AM   #3
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If the fifth digit in the model number is a 2 than you can only use a ssr

the ssr will connect to pin 8 and pin 9 the thermocouple will connect to pin 4 and 5
supply power is pin 6 and 7.

 
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Old 02-21-2010, 11:26 AM   #4
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This helps a lot. As to the model number, there isn't one. There is a label on it that has ssr drive checked. So do I hook up a fused hot to 8, and neutral to 9?

 
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Old 02-21-2010, 03:03 PM   #5
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A 5A fast blow fuse will go in the supplyline to pin 6 and neutral to pin 7.
a fuse is not needed between the pid and ssr.

 
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Old 02-21-2010, 03:10 PM   #6
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Quote:
Originally Posted by TBLbrewer View Post
This helps a lot. As to the model number, there isn't one. There is a label on it that has ssr drive checked. So do I hook up a fused hot to 8, and neutral to 9?
No. That's a good way to kill your PID. SSRs use low voltage DC on the control side. If your PID has a SSR driver, pin 8 and 9 are low voltage OUTPUTS. An SSR driver is not a relay. You will see on your SSR that one side will say 240V AC and the other side will say something like 3VDC-34VDC. You need to connect those low voltage terminals to pin 8 and 9.

MrH


 
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Old 02-21-2010, 03:57 PM   #7
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This may help I labeled the terminals to make things a little easier to understand

 
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Old 02-21-2010, 04:01 PM   #8
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Ok it all makes since now except the ssr drive not being a relay. I just ordered an ssr for this, was I wrong?

 
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Old 02-21-2010, 04:05 PM   #9
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Quote:
Originally Posted by kmack747 View Post
This may help I labeled the terminals to make things a little easier to understand
The picture removes any doubt about where the wires go. Thank you!

 
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Old 02-21-2010, 04:06 PM   #10
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You need the SSR . Glad we could enlighten you.

 
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