Foot switch belongs to a type of switch, mainly through the foot to operate the circuit switch, can also control the size of the current, most of us have not touched the foot switch. Because the foot switch is mainly drunk in medical instruments, stamping equipment.
The principle of the foot switch
Foot switch is a kind of switch that controls the circuit on or off by stepping on or stepping on the foot. It is used in the control circuit that cannot be touched by the hands in place of the hands to achieve the purpose of operation. The simple foot switch is actually a built-in travel switch, when the foot gives a signal, the switch is executed. But in the welding field foot switch function also plays the role of controlling the output current.
This type of foot switch can also be divided into two categories: one, mechanical foot switch; Two, induction foot switch. Mechanical foot switch is the traditional pinion drive, induction is through electromagnetic induction and other principles. Hrf-m pedal switch series, HRF-H series from the structure and function to distinguish H type (15A/250V opening and closing capacity) and M type (10A/250V opening and closing capacity), from the material to distinguish fire-retardant engineering plastic, steel plate, aluminum alloy.
There is a micro-switch inside the foot switch, which has two groups of normally open and normally closed contacts. When the foot pedal presses the micro-switch, the normally open contact is closed and the normally closed contact is disconnected. The general application is to connect the normally open contact, and the foot switch is used.
Note on foot switch
1. According to the nature of the load and the different current value, please pay attention to the rated load of the product.
2. Please pay attention to the occurrence of short circuit and broken circuit of internal wiring when handling and moving.
3, use in a large amount of water, oil, dust and other places, please pay attention to the protection level of the product.
4. Heavy weight and impact are the direct causes of product damage. Please be careful when using.
