D4SL-N4PFA-D

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Part Status:	Active

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Limit switches are key components for modern industrial automation applications and the D4SL-N4PFA-D is one of the most widely used of its component varieties. Its’ wide use is due primarily to its ability to detect the position of moving machines and activate switches, allowing for more complex and automated processes.The D4SL-N4PFA-D uses a snap action contact to achieve its function, as it is usually placed on the machines which need to be monitored. When the target object begins moving, the snap action contact inside the limit switch is activated, sending a signal to the activation device which in turn triggers the corresponding process, such as the stop, start, or turn-off commands. The activation of the snap action contact is considered the primary mode of operation of the device and can be used for a variety of different functions depending on the particular application.The D4SL-N4PFA-D also incorporates what is known as a "limit" function. This limits how far the target object can move before the limit switch is activated, as well as how long the machine can remain in motion before the limit switch is triggered. By utilizing its limit function, the D4SL-N4PFA-D is able to act as a safety device and protect the moving machinery from any potential damage that may occur. It can also be used to protect personnel operating the machine, as well as other personnel in the vicinity, by “limiting” the operational range of the machine.In addition, the D4SL-N4PFA-D utilizes a microswitch to sense the position of the target machine, allowing it to detect when the machine is moving beyond the set limits. This helps the device to more accurately determine when the process needs to be stopped or started. The microswitch is placed in contact with the limit switch itself and is designed to activate the device with minimal movement of the object which it is detecting.Lastly, the D4SL-N4PFA-D is also capable of providing protection from over-currents, short circuits, and over-temperature. This is done through its integrated sensing circuit which will instantly shut off the power supply to the device should any of these issues occur.Overall, the D4SL-N4PFA-D is a versatile and essential component for industrial automation applications. Its ability to sense changes in position, provide safety measures, and protect from a variety of potential hazards, makes it an invaluable component for numerous automated processes.

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