1. What is the difference between safety limit switch and ordinary limit switch?
Limit switches are electrical switches that limit the movement limit position of mechanical equipment. They can generally be divided into two types: safety limit switches and ordinary limit switches. Ordinary limit switches are universal limit switches. Compared with safety limit switches , the main differences are:
1. The safety limit switch has a direct open circuit action device (forcibly disconnecting the contact), which means that even if the contact adhesion occurs, because the switch structure can forcibly disconnect the adhering section, the dangerous section (load) can always be stopped, and the device will be in a safe position. end operation.
2. Ordinary limit switches do not have this structure, so if contact adhesion occurs, power will continue to be supplied, and the dangerous section (load) will naturally not be stopped, and the device will continue to operate in the dangerous section.
For places with relatively high safety requirements, safety limit switches should be used first.
2. What are the advantages of safety limit switches?
Safety limit switch is mainly composed of switching components, switch operating parts and transmission parts. It is mostly used in large-scale industrial production and some daily appliances. It has the following advantages:
1. No matter what kind of material it is, as long as the operating force of the contact reaches a certain value, the switch can be triggered and the power supply can be connected.
2. Using contact output mode, the output can be different according to the external voltage, and no leakage will occur.
3. It will not be affected by adjacent sensors and the output is stable.
4. The housing and driving mechanism of the safety limit switch are made of solid materials and can withstand large loads and impacts.