D4N-2B87 Application Field and Working Principle

D4N-2B87 snap action limit switches are widely used in industrial automation systems. They are designed for small and medium-sized machines, cabinet facilities as well as for flush mounting and HVAC applications. The snap action limit switch consists of a metal casing, actuator and terminals. The snap action element inside the metal casing provides a switch operation force and reactive force. D4N-2B87 snap action limit switches have a wide range of applications where the exact sensing or actuating point needs to be determined.

Applications

The D4N-2B87 snap action limit switch provides reliable and accurate switching action even in demanding industrial environments. It can be used in various applications, such as:

• Positioning and positioning control of machines and machine tools
• Opening and sealing machines
• Staging systems
• 3D printing
• Material handling systems
• Processing equipment

Working Principle

The D4N-2B87 snap action limit switch is designed to provide reliable and accurate switching action. The switch works when an external force is applied to the actuator. The force is then transmitted to a spring loaded, metallic snap action element, which converts the force into a switch actuation. The amount of force required for actuation is determined by a pre-set adjustment screw located on the outside of the switch.

When the pre-set force is below the actuation point, the switch remains open for the entire cycle. However, when the pre-set force is above the actuation point, the contacts snap open and close accordingly. This provides a quick and reliable switching action, even in harsh industrial environments.

The D4N-2B87 snap action limit switch can be configured to engage in a normally closed or normally open state, depending on the application. In addition, the switch can be adjusted to actuate at any point within its range of operation.