Limit switch Metal casing - IP66 Adjustable roller lever limited switch Schneider XCKN21 45P20C

Limit switch Metal casing - IP66 Adjustable roller lever limited switch Schneider XCKN21 45P20C

Travel switch, also known as limit switch, is a commonly used small current control device. By utilizing the collision of moving parts in production machinery to activate their contacts, the control circuit can be connected or disconnected to achieve certain control objectives. Usually, these types of switches are used to limit the position or stroke of mechanical movement, causing the moving machinery to automatically stop, move in reverse, change speed, or move back and forth according to a certain position or stroke.

In electrical control systems, the function of position switches is to achieve sequential control, positioning control, and detection of position status. Used to control the stroke and limit protection of mechanical equipment. Construction: Composed of an operating head, contact system, and housing.

In actual production, the travel switch is installed in a pre arranged position. When the module installed on the moving parts of the production machinery collides with the travel switch, the contact of the travel switch acts to achieve circuit switching. Therefore, a travel switch is an electrical device that switches circuits based on the travel position of moving parts, and its working principle is similar to a button.

Travel switches are widely used in various machine tools and lifting machinery to control their travel and provide terminal limit protection. In the control circuit of the elevator, a travel switch is also used to control the speed of opening and closing the car door, the limit of automatic door opening and closing, and the upper and lower limit protection of the car.

Travel switches can be installed on relatively stationary objects (such as fixed frames, door frames, etc., referred to as stationary objects) or moving objects (such as cranes, doors, etc., referred to as animals). When an animal approaches a stationary object, the connecting rod of the switch drives the contact of the switch to cause the closed contact to open or the open contact to close. Control the operation of circuits and mechanisms by changing the opening and closing status of switch contacts.

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