control wiring diagram anyone?

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Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=131144
Printed Date: May 08, 2025 at 7:11 PM

Topic: control wiring diagram anyone?

Posted By: jj1960
Subject: control wiring diagram anyone?
Date Posted: April 08, 2012 at 5:44 AM

can anyone sort this out for me . i cannot get my head around it

i need a wring diagram to do the following

i have a fan controller that operates a fan when it reaches a certain temperature ,instead of the fan i want it to operate an 12 volt 2 wire actuator

when the desired temperature is reached the power comes on and the actuator will open , when the temperature drops the power to the actuator will be cut .and i need the actuator to then close by having the polarity reversed and getting the power to do this from somewhere . is this possible

i hope you can understand what i am asking and give me a solution

thanks

Replies:

Posted By: hotwaterwizard
Date Posted: April 08, 2012 at 7:53 PM

There is a way to do it but you need th be able to stop the action when the actuator reaches it's full extension and retraction. Micro switches are commonly used for this.

posted_image

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: jj1960
Date Posted: April 09, 2012 at 2:05 AM

i couldn't see the wood for the trees

must have had brain freeze or something

thankyou very much

Posted By: hotwaterwizard
Date Posted: April 16, 2012 at 7:38 PM

Please Let me know if the diagram works.

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: jj1960
Date Posted: February 04, 2013 at 10:26 AM

sorry for taking so long to get back to you but thought i would let you know that it works lovely