LED Indicator Pilot Signal Light Lamp- China Manufacturers Suppliers Factory

The appliances we use every day at home or in our business establishments consist of several essential components. These components are also made up of smaller devices and parts that are carefully assembled to allow our appliances’ smooth and accurate operation.

One of the smaller devices that make up the components of the machines we use is the LED pilot light. It is one of the most reliable indications of whether a certain device operates well. Let’s define these lights, applications, benefits, specifications, etc.

A push button is a manually controlled master electrical appliance. It is mainly used to issue operation commands, turn on or off the control circuit, and control the operation of mechanical and electrical equipment. The working principle of the button is very simple. For the normally open contact, the circuit is disconnected before the button is pressed. After the button is pressed, the normally open contact is connected and the circuit is also connected; for the normally closed contact, Before the button is pressed, the contacts are closed, and when the button is pressed, the contacts are opened and the circuit is broken. Due to the needs of the work of the control circuit, a button can also have multiple pairs of contacts that act simultaneously.

Buttons have a wide range of uses, such as starting and stopping of lathes, forward rotation and reverse rotation, etc.; start, stop, rise, fall, forward, backward, left, right, slow or fast operation of tower cranes, etc., all need buttons control.

The push button switch refers to a switch that uses a button to push the transmission mechanism to make the moving contact and the static contact press on or off and realize the circuit switching. The push button switch is a kind of master electrical appliance with simple structure and wide application. In electrical automatic control circuits, it is used to manually send control signals to control contactors, relays, electromagnetic starters, etc.

Classified according to the purpose and structure of the contact 

(1) Normally open button 

(2) Normally closed button 

(3) Compound button classified according to operation mode and protection mode Buttons can be classified according to operation mode and protection mode, common button categories and characteristics: 

(1) Open type: suitable for embedded and fixed on the panel of switch board, control cabinet or console. 

(2) Protective type: with a protective shell, which can prevent the internal button parts from being mechanically damaged or people touching the live parts. 

(3) Waterproof type: with a sealed shell, which can prevent rainwater from intruding. 

(4) Anti-corrosion type: it can prevent the intrusion of chemical corrosive gases. 

(5) Explosion-proof type: It can be used in places containing explosive gas and dust without causing explosion transmission, such as coal mines and other places. 

(6) Illuminated button: There is a signal light inside the button, which is not only used to issue operation commands, but also serves as a signal indicator, and is mostly used on the panels of control cabinets and consoles. 

(7) Key type: Insert and rotate with a key to operate, which can prevent  be operated by a special person. 

(8) Emergency type: There is a big red mushroom button protruding outside, which is used to cut off the power supply in case of emergency.

(9) Self-holding button: The button is equipped with a self-holding electromagnetic mechanism, which is mainly used in power plants, substations or test equipment. Operators communicate with each other and issue instructions, etc., and are generally panel-operated. 

(10) Knob type: The contact is operated by rotating the handle, with two positions of on-off, generally panel-mounted.

(11) Combined type: combination of multiple buttons. (12) Interlocking type: Multiple contacts interlock with each other. Code-named off, on.

The main technical parameters

Switch rating: ac-15 36v/10a 110v/10a 220v/5a 380v/2.7a 660v/1.8a dc-13 24v/4a 48v/4a 110v/2a 220v/1a 440v/0.6a 

Conventional thermal current: 1th 10a 

Electric shock Resistance: ≤50mΩ 

Insulation resistance: ≥10mΩ 

Mechanical life: general button n≥100×10 times; knob ≥30×10 times. 

Key button n≥5×10 times; emergency stop button ≥5×10 times

Wiring problem with button switch

1. How to wire the button switch with light. There are five terminals on the button. Now I can only measure how to connect the power line, but I don’t know how to connect the light.

Answer: This situation is relatively simple. This kind of switch should have two terminals connected to the light, and the other three terminals are for switches. Find out the terminal connected to the light and the terminal of the switch, and then distinguish which two terminals you want to use to connect Switch, directly connect the light and the switch terminal to be connected in series, so that when the switch is turned on, the light will be on.

What is an emergency stop push button switch?

Emergency stop switch, also known as emergency stop switch, emergency switch, kill switch or emergency button, emergency stop button switch, is a fail-safe control switch that provides safety protection for machinery and equipment. People who use machines.

specify the following requirements: Emergency stop switches must be highly visible in colour, labeling and shape for easy operation in emergency situations. So the button has to be a red mushroom head with an arrow, emergency or stop symbol.

Common sizes for mushroom heads are 29mm, 30mm, 40mm or 60mm. The direct operating mechanism must be set on a normally closed contact and have a self-holding function. It requires a twist, pull or key to release the electrical contacts to allow the machine to restart.

Emergency Stop Button (E-stop for short) is an emergency stop device, usually used in mechanical and automation systems to prevent accidental injury or equipment damage. The following are the main functions and features of the emergency stop button in production:

effect:

Emergency stop: When a dangerous or unexpected event occurs, press the emergency stop button to stop the machine or equipment immediately to prevent further injury or equipment damage.

Convenient operation: The emergency stop button is usually located in an easily accessible position of the machine or equipment, and is generally easy to identify and operate.

System safety: By using the emergency stop button, it can reduce the negligence and error of the system operator and help ensure the safety of the system.

Protection equipment: the emergency stop button can automatically cut off the power supply in case of equipment overload, overheating, overvoltage, etc., so as to protect the equipment from damage.

characteristic:

Independent control: The emergency stop button is usually not related to the control of other equipment, and has an independent circuit to ensure that the machine or equipment can be stopped immediately under any circumstances.

Easy reset: Once the emergency stop button is pressed, it must be reset manually to restart the machine or equipment. This can prevent the machine or equipment from restarting in an unsafe state.

Reliability: The emergency stop button must be reliable, operable, and highly reliable and durable to ensure that it can work normally when needed.

Standardization: The color and shape of emergency stop button are generally standardized to facilitate identification and operation, and comply with relevant safety standards and regulations.