Controlling an actuator with a contact closure
Description:
If you have a home theater or home automation system that can do contact closure you can use it to control a linear actuator.
STEP1
- Wire the relay up as shown in the diagram.
Basically what you're doing is wiring the motor wires to the Common pins of the relay, and then the power goes to the Normally Closed pins with jumpers to the Normally Open pins to swap polarity.
What this does is when the relay is triggered the motor gets reversed voltage and move in the opposite direction. The internal limit switches stop the actuator when it reaches full extension or full retraction.
STEP2
- For the contact closure connection, you need to take the power source that triggers the relay (you can use the same 12VDC power source that the actuator uses) and put the contact closure connections inline (wired in serial) with the relay coil.
When your contact closure system is triggered the power will be connected through to the DPDT relay and the voltage to the actuator will be reversed and the actuator will move.
When the contact closure is released the power to the relay will be disc
Images
Controlling an actuator with a contact closure
Project By: Troy
signature: Automate!
Cost: $20
Time: 1 hours
Skill level: very easy
Category: Actuator controls
Tags: home automation;home theater;contact closure;DPDT
Viewed: 1419 times
Website: http://www.FirgelliAuto.com/
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