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A push button is a control switch that uses a certain part of the human body (usually a finger or palm) to apply force and has a spring stored energy to reset. It is one of the most commonly used master electrical appliances. The allowable current through the contact of the button is small, generally not more than 5A. Therefore, under normal circumstances, it does not directly control the on and off of the main circuit (large current circuit), but sends command signals in the control circuit (small current circuit) to control electrical appliances such as contactors and relays, and then they control the main circuit. On-off, function conversion or electrical interlocking.

The push button switch is an electrical appliance that is used to switch on and off small current circuits that is pressed to act, and released to reset. It is generally used in control circuits with AC and DC voltages below 440V and currents less than 5A. Generally, the main circuit is not directly manipulated, and it can also be used in interconnecting circuits. The push button must have a metal protective retaining ring, and the retaining ring should be higher than the button cap to prevent accidental activation of the button and cause malfunction. The material of the button board and push button box where the button is installed must be metal and connected to the main ground bus of the machine.

Boutique recommendation | STOP! Do you really understand the emergency stop button?

The emergency stop button can also be called the "emergency stop button", as the name implies: when an emergency occurs, people can quickly press this button to achieve protective measures.

The current machinery and equipment does not intelligently detect the surrounding environment and its own operating status at any time. It is still necessary for on-site operators to photograph the emergency stop button in an emergency to avoid major personal and property damage, but the emergency stop button is in use. There will be the following misunderstandings:

01 Wrong use of the normally open point of the emergency stop button:

Part of the site will use the normally open point of the emergency stop button and then use the PLC or relay to achieve the purpose of emergency stop. This wiring method cannot immediately cut off the fault when the emergency stop button contact is damaged or the control circuit is disconnected.

The correct approach is to connect the normally closed point of the emergency stop button to the control circuit or the main circuit, and immediately stop the output from the actuator at the moment the emergency stop button is photographed.

02Wrong use occasion:

The emergency stop button is only used when there is an accident in operation, and some maintenance personnel perform maintenance work after pressing the emergency stop button. In this case, once the emergency stop button is damaged or other personnel will turn the emergency stop button without knowing it Reset, it may cause heavy losses to people and property.

The correct approach should be to power off and list out and perform maintenance work after detecting the lack of power.

03 Wrong usage habits:

Some sites, especially those with low frequency of use of emergency stop buttons, may neglect the regular inspection of the emergency stop button. Once the emergency stop button is blocked by dust or malfunctions and is not found in time, it may not be able to cut off the danger in time when the fault occurs. Cause heavy losses.

The correct approach should be to check the emergency stop button regularly to avoid accidents.

Relevant regulations that the building should be equipped with fire elevator are introduced.The

Design points of the fire elevator are briefly described.The key points of maintenance work for fire elevators are proposed.The precautions for the management of the use unit and the use of fire elevators are clarified.Reference is provided for fire elevator sales personnels.designers,maintenance personnels,management personnels,users.

Keywords：fire elevator；design；configuration； maintenance；use

XINDALI participated in the team building activity organized by the Sulu Industrial Zone on the eve of Labor Day on May 1st.

Very good results were achieved in the first round of the competition. The team members come from various departments of our company, including sales personnel, production personnel, quality inspection personnel, warehouse management and personnel management personnel.

We can look forward to the next continue to participate in such activities.

Push switches are an essential component of electronic equipment, providing a simple and reliable way to turn devices on and off. In light of their importance, industry experts have recently announced the top push switch manufacturers for electronic equipment. According to the experts, the top push switch manufacturers include APEM, C&K, E-Switch, and NKK Switches.

Signal indicator manufacturer, SignalPro, has recently announced the release of their newest product - a 12V indicator light specifically designed for use as a signal indicator in a wide range of applications. The 12V indicator light is highly visible and can be easily integrated into various equipment and machinery to indicate the status of various functions, such as power on/off, fault detection, and other important operational details. It is also highly durable and can withstand harsh enviro

Signal equipment manufacturer, SignalTech, has announced the launch of their latest product - a 24V LED indicator light designed for emergency signal applications. The product is now available at a factory price, making it an affordable option for customers in need of reliable and high-quality signal equipment.