Guide: The intermediate relay is a relay. The principle is similar to that of the relay. In the industrial control circuit and the current household appliance control circuit, the functions of the intermediate relay are different for different control lines, so what are the functions of the intermediate relay ? What?
1. The role of the intermediate relay - Introduction
Intermediate relays are used in relay protection and automatic control systems to increase the number and capacity of contacts and are also used to pass intermediate signals in the control circuit. There are two main delay modes of the intermediate relay, namely the power-on delay and the power-off delay. The installation methods are mainly divided into fixed type, protruding type, embedded type and rail type. It generally has no main contacts because the overload capability is relatively small. So it uses all the auxiliary contacts, the number is more.
2. The role of the intermediate relay - structure
The intermediate relay is a relay consisting of a fixed iron core, a moving iron core, a spring, a moving contact, a static contact, a coil, a terminal block and a casing. When the coil is energized, the moving iron core moves under the action of electromagnetic force, and the moving contact is actuated to make the normally closed contact separate, and the normally open contact is closed; when the coil is powered off, the moving iron core drives the moving contact under the action of the spring. Reset.
In the industrial control circuit and the current home appliance control circuit, there are often intermediate relays. The functions of the intermediate relays are different for different control circuits, and the following functions are common in the circuit.
3. One of the functions of the intermediate relay - instead of a small contactor
The contacts of the intermediate relay have a certain load capacity. When the load capacity is small, it can be used to replace the use of small contactors, such as electric shutters and some small appliances. This not only can be used for control purposes, but also saves space and makes the control part of the appliance more delicate.
4. The role of the intermediate relay - increase the number of contacts
In the circuit control system, an intermediate relay is added to the line, which not only does not change the control form, increases the number of contacts, but also facilitates maintenance.
5. The role of the intermediate relay - increase the contact capacity
Although the contact capacity of the intermediate relay is not very large, it also has a certain load capacity, and the current required for its driving is small, so the intermediate relay can be used to expand the contact capacity. In the control circuit, the intermediate relay is used, and the intermediate relay is used to control other loads to achieve the purpose of expanding the control capacity.
6. The role of the intermediate relay - the type of conversion joint
In the industrial control circuit, an intermediate relay can be connected in parallel with the original contactor coil, and the normally closed contact of the intermediate relay can be used to control the corresponding components, and the type of the contact can be switched, so that the normally closed contact of the contactor can be used to achieve the control. purpose.
7. The role of the intermediate relay - used as a switch
In some control circuits, the switching of some electrical components often uses an intermediate relay, which is controlled by the opening and closing of its contacts. For example, in the color TV or the automatic degaussing circuit commonly used in the display, the triode controls the on and off of the intermediate relay, thereby achieving the function of controlling the on/off of the degaussing coil.
8. The role of the intermediate relay - conversion voltage
In the industrial control line control line, the voltage is DC24V, and the coil voltage of the solenoid valve is AC220V. An intermediate relay is installed to separate DC from AC, high voltage and low voltage for future maintenance and safe use.
9. The role of the intermediate relay - eliminate interference in the circuit
In industrial control or computer control lines, although there are various interference suppression measures, the interference phenomenon is more or less present, and an intermediate relay is added internally to achieve the purpose of eliminating interference.
Expand reading:
1. The working principle of the relay
2. Research on the scale of China's intermediate relay market in 2012
3. The role of the relay
cell phone battery
ZGAR PCC KIT
ZGAR electronic cigarette uses high-tech R&D, food grade disposable pod device and high-quality raw material. All package designs are Original IP. Our designer team is from Hong Kong. We have very high requirements for product quality, flavors taste and packaging design. The E-liquid is imported, materials are food grade, and assembly plant is medical-grade dust-free workshops.
From production to packaging, the whole system of tracking, efficient and orderly process, achieving daily efficient output. We pay attention to the details of each process control. The first class dust-free production workshop has passed the GMP food and drug production standard certification, ensuring quality and safety. We choose the products with a traceability system, which can not only effectively track and trace all kinds of data, but also ensure good product quality.
We offer best price, high quality Vape Device, E-Cigarette Vape Pen, Disposable Device Vape,Vape Pen Atomizer, Electronic cigarette to all over the world.
Much Better Vaping Experience!
E-Cigarette Vape Pen,Disposable Device Vape,PCC SET, Vape Pen Atomizer,Latest Disposable E-Cigarette OEM vape pen,OEM electronic cigarette
ZGAR INTERNATIONAL TRADING CO., LTD. , https://www.zgarvapepen.com