DIY PID Controller - Page 2

Dr_KY · 04-05-2012, 12:14 PM

What is a SSR?

Lightning · 04-05-2012, 12:20 PM

Quote:

Originally Posted by Dr_KY

What is a SSR?

Solid State Relay

WvSmoke · 04-05-2012, 04:42 PM

^^^What Lightning said^^^. An SSR is a Solid State Relay. The difference between an SSR and standard relay is the way the contact closure is made. In a standard relay, and electrical current is passed through a magnetic coil, which then retracts a solenoid, which closes a set of mechanical contacts; much like flipping a light switch, but electrically. A solid state relay uses transistors (way over-simplified, but suitable for explanation) which activate to allow current to flow when triggered. The advantages of the SSR over a standard relay are the response time and lack of moving parts.

ChrisH · 04-05-2012, 09:58 PM

Quote:

Originally Posted by WvSmoke

If the PID has a built in SSR, you will have to run the 12vdc fan power through the SSR output relay contacts. If, however, your PID has SSR control you will have to use a separate SSR. The controller I built has SSR control, so I had to use an external SSR. My build thread is here. I have a diagram in pdf format somewhere. I'll try to find it after work.

I believe the PID does have the SSR built in with a 12VDC output, I cannot find any info on the max load it can carry. The fan will draw an amp or less.

jw177 · 04-07-2012, 07:14 AM

Wow, looks really simple to put together. A parts list would be great since you have already done the hard part

fudgeorama · 04-07-2012, 08:17 AM

I was looking at this very controller, but it displays temperature in Celcius.

04-05-2012, 12:14 PM	#16
Dr_KY Quintessential Chatty Farker Join Date: 12-15-07 Location: England	What is a SSR? __________________ www.drsweetsmoke.com Slappin that bass like some delerious funky preist!!! UDS, Half Pint (Mini UDS), Weber, ProQ 20, Kegrilla 250 gallon cooker- 'The Meat Beast!!' British BBQ Championships Grand Champion 2008 ~~~~ British BBQ Society - Southern Championship Grand Champions 2009

04-05-2012, 04:42 PM	#18
WvSmoke Full Fledged Farker Join Date: 09-25-11 Location: Follansbee, Wv	^^^What Lightning said^^^. An SSR is a Solid State Relay. The difference between an SSR and standard relay is the way the contact closure is made. In a standard relay, and electrical current is passed through a magnetic coil, which then retracts a solenoid, which closes a set of mechanical contacts; much like flipping a light switch, but electrically. A solid state relay uses transistors (way over-simplified, but suitable for explanation) which activate to allow current to flow when triggered. The advantages of the SSR over a standard relay are the response time and lack of moving parts. __________________ El Cheapo Royal Oak charcoal grill (heavily modified and repaired), Chargriller Pro, Webber 22.5" Silver, Webber Smokey Joe, Hibachi, UDS, ECB Square My name is Monty, dad, or grandpa...depending on who you are.

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04-07-2012, 07:14 AM	#20
jw177 Got Wood. Join Date: 04-01-12 Location: Jacksonville Florida	Wow, looks really simple to put together. A parts list would be great since you have already done the hard part

04-07-2012, 08:17 AM	#21
fudgeorama Found some matches. Join Date: 02-19-09 Location: Tallahassee, FL	I was looking at this very controller, but it displays temperature in Celcius.