What is a linear actuator limit switch kit?
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Actuonix Limit Switch Kit |
Some larger actuators have adjustable end limit switches. With Actuonix devices, the tiny size of the actuator makes this impossible. This is where an external limit switch kit comes in.
A limit switch kit is a set of two simple switches that when wired into your actuator's control circuit, replace the function of the internal switches. This kit is mounted externally and requires that the moving part of your mechanism actually makes contact with the switch on the retraction and/or extension strokes.
It can be the rod or block of the actuator itself, or any moving part of your mechanism that contacts the switch, your choice.
Pretty simple right?
Using one of these kits, you can customize the stroke of your actuator to whatever you want below the maximum, factory stroke of your device.
How do limit switches work?
There are many different types of limit switches out there in a variety of sizes to accommodate everything from micro linear actuators to heavy duty linear actuators.
Pros and cons of installing an external limit switch kit
Pros:
- Makes it simple to customize your actuator's stroke below the factory setting
- Much cheaper than ordering a custom linear actuator (which must be done at higher quantities)
- Simple to wire up and effective
Cons:
- It increases the complexity of your project and may make your wiring a little more messyTakes a little more time to set up than just plugging your actuator in
- Makes your design slightly more complex
Which actuators are compatible with a limit switch kit?
If you're planning on using a -P actuator without an LAC, it's a good idea to use a limit switch kit as well to avoid damaging the actuator.
How To Install A Linear Actuator Limit Switch Kit
Parts:
Actuonix -S series or -P series micro linear actuatorExternal limit switch kit
Control switch of your choice
Power source
Heat shrink tubing (if you're soldering the connections)
Tools:
Wire stripperSoldering iron or connectors with crimping tool
All you need to do is simply wire the limit switches into your control circuit following the wiring diagram below.
Summary
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