What is the connection of the foot switch?
The inside of the foot switch is composed of three wires, one is normally open, one is normally closed, and the other is a public wire. When connecting, just connect the normally open line and the common line, one is connected with the neutral line of the power supply, and one is connected with the live line of the power supply. However, if the rated current of the appliance is too large, AC contactors must be used.
What to pay attention to when using the foot switch:
1, first of all, when using the foot switch, according to the current value of the electrical appliances to choose, although there are many kinds of foot switches on the market, but different places, the use of foot switches is not the same as. For example, in medical devices, USB foot switches are usually selected; However, if it is used in industry, then the requirements are higher, and it may be necessary to choose a foot switch that is explosion-proof and waterproof.
2、 secondly, when handling or moving the foot switch, it can not be affected or heavy, otherwise it will destroy the internal wire, resulting in a break or short circuit. And if it is used in a humid, oily or dusty environment, pay attention to the protection of the switch, otherwise it will also affect its use.
3、 finally, there are many types and models of foot switches, and the price of work is also a big difference, such as the price of home use may range from dozens of yuan, and the price of commercial use is higher, up to hundreds of thousands of yuan. When choosing, choose according to your actual use. And when operating, it is necessary to operate according to the instructions, know its precautions, and avoid damaging the foot switch due to improper use, causing unnecessary losses.