<![CDATA[SoliForum - 3D Printing Community — Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/topic/4909/extrusion-machine-temperature-control-question/ Thu, 06 Mar 2014 10:01:16 +0000 PunBB <![CDATA[Re: Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/51524/#p51524 Why don't you try some Vrp power line conditioner which is quite efficient and works when power is continuous.

]]> Thu, 06 Mar 2014 10:01:16 +0000 https://www.soliforum.com/post/51524/#p51524 <![CDATA[Re: Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/44801/#p44801 Thanks for the advice guys!

I ordered a SSR to be on the safe side. I may try out the normal relay in the meantime though.

]]> Thu, 19 Dec 2013 23:52:44 +0000 https://www.soliforum.com/post/44801/#p44801 <![CDATA[Re: Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/44788/#p44788 Hazer wrote:

They burn out closed only when over-loaded, not due to over-cycling. I have never seen one in 15 years that died closed because they exceeded expected life cycles.

The main reason is that every time it closes during normal operation, it sparks (regardless of current). They slowly build up carbonization. The contacts get so dirty, they finally no longer conduct.


I can agree with Hazer
happens to the relays in my cnc lathe when they go out

]]> Thu, 19 Dec 2013 23:02:53 +0000 https://www.soliforum.com/post/44788/#p44788 <![CDATA[Re: Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/44777/#p44777 They burn out closed only when over-loaded, not due to over-cycling. I have never seen one in 15 years that died closed because they exceeded expected life cycles.

The main reason is that every time it closes during normal operation, it sparks (regardless of current). They slowly build up carbonization. The contacts get so dirty, they finally no longer conduct.

]]> Thu, 19 Dec 2013 19:48:57 +0000 https://www.soliforum.com/post/44777/#p44777 <![CDATA[Re: Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/44764/#p44764 Hazer wrote:

Simple answer: Use it, and when it burns out, replace it with an SSR for longer life span.


Not quite so simple. When it "burns out" it can burn out CLOSED (power on). So your answer is only suitable if your extrusion system (like the filastruder) is designed so that a failed 100% power would not lead to catastrophic heat rise.

]]> Thu, 19 Dec 2013 16:55:59 +0000 https://www.soliforum.com/post/44764/#p44764 <![CDATA[Re: Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/44736/#p44736 Simple answer: Use it, and when it burns out, replace it with an SSR for longer life span.

]]> Thu, 19 Dec 2013 12:07:11 +0000 https://www.soliforum.com/post/44736/#p44736 <![CDATA[Re: Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/44716/#p44716 Yup, simple calculation based on rated electrical cycles under load and control loop period.

]]> Thu, 19 Dec 2013 04:56:04 +0000 https://www.soliforum.com/post/44716/#p44716 <![CDATA[Re: Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/44695/#p44695 it will work but depending on the duty cycle of the heating elements and the mtbf rating on the relay it will have a finite lifespan, Elmoret(Tim) discussed the pros and cons of this in his filastruder thread... I think.

]]> Thu, 19 Dec 2013 03:01:22 +0000 https://www.soliforum.com/post/44695/#p44695 <![CDATA[Extrusion Machine - Temperature Control Question]]> https://www.soliforum.com/post/44639/#p44639 Hi guys,

I'm building an extrusion machine and have a question about temperature control. Will a normal electro-magnetic relay work with a PID temperature controller? Most of the designs I've seen use a solid state relay, but I accidentally ordered a regular relay.

Thanks,

]]> Wed, 18 Dec 2013 18:03:27 +0000 https://www.soliforum.com/post/44639/#p44639