In engineering applications, there are many devices used as circuit on-off control, such as buttons, relays, sensors, etc., and the travel switch is one of them.
The working principle of the travel switch is similar to that of the button, the difference is that the button is on and off by pressing, while the on and off of the travel switch is by “bump”. It also has a pair of normally open and normally closed contacts, and has a variety of actuators, such as Zhejiang Shuyi Electric’s z-series travel switch actuators, which are suitable for AC 10A, rated working voltage AC250V, sturdy zinc casting Housings are used in many fields of industrial control.
When the travel switch is in use, it can be installed on a relatively stationary object (such as a fixed frame, door frame, etc.) or a moving object (such as a vehicle, a door, etc.). When the animal approaches the still life, the connecting rod of the switch drives the contacts of the switch to cause the closed contacts to open or the open contacts to close.
For example, connect its normally closed circuit in the motor circuit to start the motor, such as controlling the advancement of the conveyor belt. When it reaches the designated position and encounters the travel switch, the normally closed circuit of the travel switch is disconnected and the motor stops running.
In addition, pay attention to the following points when using the travel switch:
1. The detected object should not touch the proximity switch to avoid damage to the proximity switch due to friction and collision;
2. During installation, the lead wire should be fixed firmly with a wire clip at a distance of 10 cm from the switch, so as not to damage the travel switch due to pulling the lead wire;
3. A protective cover should be provided for the travel switch during installation;
4. The use distance of the switch should be set within 2/3 of the rated distance, so as to avoid the influence of temperature and voltage, which will cause the travel switch to fail.
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