We encounter a limit switch every day in our lives. Can you guess how? As children, we’ve often peered through the refrigerator door to watch the light go out as we closed it. But have you ever wondered what caused it to be this way? Enter the Limit Switch.
To understand what it is, think of a limit switch as the electrical equivalent of a toilet float. As the water in the tank fills, the float rises, and at a certain point, it is high enough to stop the flow of water.
Do not worry if it has not made sense to you yet. In this article, we will discuss Telemacanique limit switches at length and in-depth.
Let’s begin already.
What is a Telemecanique limit switch?
They are industrial electromechanical devices that are used to detect or sense the absence or presence, speed, travel limit, positioning, or the endpoint of an object in industrial applications.
What is the working principle of a limit switch?
It is equipped with a lever, knob, and plunger to make the detection. As soon as an object comes in contact with the limit switch, the sensor mechanically dislocates the actuator and makes or breaks an electrical connection.
In what ways are Telemecanique limit switches beneficial?
Several advantages are inherent to them. Among them are:
- Lower power consumption
- Optimal repeatability and high accuracy
- Robust and long-lasting
- Installing is straightforward and hassle-free
- Suitable for switching loads with high inductance
- Applicable to virtually any industry
- Multi-load control system
What are the most common applications for Telemecanique limit switches?
Usually, they are utilized to control machinery functions or for emergency purposes such as initiating, stopping, slowing, or accelerating operations.
Dump trucks use limit switches with button actuators to detect when a pallet is fully down. The switch closes when the button is pressed, notifying the driver (via a light or alarm) that it is safe to drive.
Assembly lines also employ them. Telemecanique limit switches can detect when a predetermined number of components has been added to a product and triggers the actuator to move the equipment away, which in turn shifts the product to the next station.
Interestingly, even automatic garage doors have limit switches.
Deactivating the engine prevents it from crashing into the lifting mechanism when a motor lifts the door or slamming into the bottom rail.
The other typical applications of a Telemecanique limit switch include:
- Stopping a length of rod at the appropriate cutting point
- Stopping a washing machine when its load is out of balance
- Construction machinery and equipment such as lift trucks, conveyor belts, cranes, hoists, to detect misalignment
- Metal fabrication equipment, presses, transfer lines, etc
- Control the lighting in control panels
Thanks to this comprehensive overview, you should have a better understanding of Telemecanique Limit Switches.
Feel free to share the wisdom with anyone who might benefit from this blog.