The characteristics of the emergency stop switch
1, for example, in some of the machines installed on the emergency stop switch, then when the machine malfunction or there is a danger, we can through the installation of the emergency stop switch to cut off the power supply, stop the equipment to achieve the protection of personal and equipment safety. Emergency stop switches are usually manually controlled push switches, series access to the control circuit of the equipment, used in emergencies, directly disconnect the control circuit power supply, so as to quickly stop the equipment to avoid abnormal operation. Good sealing performance can be used in gas, coal dust, smoke, water and other harsh environments, both ends are equipped with plastic-coated pull rope. After the sensor action, the locking release lever pops up and is reset manually. The switch has 4 outlet nozzles, two of which are the introduction and exit of the main cable, and the other two are connected to the sensor or signaler respectively.
2, IP65 is with the level of protection, in thunderstorms we can not worry about it being wet by the rain, generally more suitable for outdoor or indoor, then the modular structure design, a variety of functional modules can be flexibly combined, easy to use. Contact modules can be stacked, single layer can be loaded with 3 contact modules, double layer can be loaded with 6 contact modules, the contacts are made of silver cadmium oxide (AgCdO15) material, strong connecting and breaking capacity, long life. The indicator light of the button with light adopts LED light with high brightness, long life and low power consumption, and the wiring screw has a spring ring for reliable connection to prevent loosening. The knob switch and the key knob switch have the function of preventing the following rotation, which can avoid the phenomenon of the body following the handle to rotate together in the process of using.
Emergency stop switch use attention and classification
1, the use of attention
In the use of emergency stop switch before, we need to do for some matters related to understanding, so that in the use of the time will be more familiar. In the industrial safety where some transmission parts, will be directly or indirectly in the event of anomalies, the human body to produce harm to the machine must be protected measures, emergency stop button is one of them. Therefore, in the design of some of the transmission parts of the machine must be added to the function of the emergency stop button, and to be set in the personnel can be easily pressed on the surface of the machine, there can not be any obstruction. Emergency stop button switch, just directly to the downward pressure, you can quickly make the whole equipment immediately stop or release some transmission parts. To start the machine again you must release this button, that is, just turn it clockwise about 45° and release it, the pressed part will pop up.
2, classification
Emergency stop switch in the use of the classification of two kinds, one is manual, a manual, first of all, the emergency stop switch will be connected to the circuit, the bottom part of the two contacts correspond to the control circuit. Then 380V connection is the power supply A phase connected to the emergency stop any contact → emergency stop another point connected to a point of the control circuit → control circuit another point connected to the power supply B phase. If it does not work, do not move the lead of the emergency stop switch, swap the two points of the control circuit, some contactors have direction difference. And 220V connection is the firewire to emergency stop any point → emergency stop another point to the control circuit point → control circuit another point to the zero line.