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Industrial grade PoE switches are based on existing industrial Ethernet switches. By embedding the PoE power supply chip and the PoE network management function, power and data transmission are provided for the terminal network device through the network cable, and the PoE power supply scheduling of the terminal device can be realized through remote management. Provide faster and safer transmission applications for industrial network applications. Therefore, when network equipment is deployed in industrial sites, the stability of ordinary commercial switches will be greatly challenged in the face of harsh working conditions and severe electromagnetic interference. . In this regard, industrial PoE switches with high reliability, stability and security have emerged as the times to become a transmission tool that can adapt to complex industrial environments and facilitate industrial automation network deployment.
Industrial PoE switches are designed to withstand the rigors of the work environment, with a wide product line and flexible port configurations to meet the needs of a wide range of industrial control applications. With the rapid development of power, metallurgy, petrochemical, environmental protection, transportation, construction and other industries, the demand for industrial PoE switches in various industries has become more and more demanding. So, what are the advantages of industrial-grade PoE switches compared to ordinary commercial switches? The following is a detailed introduction.
Second, the main advantages of industrial PoE switch products
1, using industrial PoE-class components
Industrial PoE switches have high requirements for component selection and can withstand harsh environments, so they can be well adapted to industrial environments and support industrial applications in harsh environments.
2, fast ring network, fast redundancy
Industrial PoE switches generally have fast ring network and fast redundancy, and the system redundancy time can be less than 50ms. Although commercial products can also form redundant networks, the self-healing time is 10 to 30 s or longer, which cannot meet the needs of industrial environments. For example, the optical PoE switch developed by Optical Network Technology supports the ERPS Industrial Fast Ring Network (G.8032) protocol with a self-healing time of at least 30ms.
3, super anti-interference performance
Industrial PoE switches have strong anti-interference performance, can work in harsh electromagnetic environment, and have high protection level in lightning protection, waterproof, anti-corrosion, anti-shock, anti-static, etc., while commercial-grade switches are Do not have these characteristics. For example, Optical Network's 8-port PoE full-Gigabit industrial-grade PoE switches feature 6KV lightning protection, industrial 4-level protection and anti-jamming capabilities.
4, adapt to a wide temperature environment
Industrial PoE switches generally use a pleated metal casing for better heat dissipation and greater protection. They can work normally in the temperature range of -40 ° C to 80 ° C, and can be well adapted to complex temperatures and humidity. Commercial switch products can only work in the range of -20 ° C ~ 50 ° C, can not meet the working requirements in harsh climates.
5, redundant power supply design
Power supply is a very important part of industrial PoE switches. Power failures generally account for more than 35% of equipment failure rates. To avoid the trouble of power failure, industrial PoE switches use dual power supply redundancy to ensure stable and reliable operation. Commercial products generally use AC single-supply power supply, which is not suitable for industrial environments.
6, long service life
Industrial PoE switches use industrial-grade solutions from the outer casing materials to the companion components, so the reliability of the products is higher and the service life is longer. The service life is generally >10 years, while the service life of ordinary commercial switches is 3 years.
Third, the main measurement factor for selecting industrial PoE switches
1, reliability
Reliability is critical in an industrial field environment. The factors related to product reliability are: equipment hardware tolerance to the working environment: such as operating temperature range, EMC electromagnetic compatibility, lightning protection level, installation and power supply mode, fanless design, redundancy, fault diagnosis and Recovery ability, etc. In the parameter description of the product, there should be a detailed description of the operating temperature range, electromagnetic protection, and lightning protection level.
2, real-time
Network data transmission will have a certain delay. Therefore, the first consideration for selecting an industrial Ethernet switch is the port delay of the switch during data frame forwarding. In a standard factory automation control system, the system can tolerate a response time of no more than 10 milliseconds. Therefore, when selecting a switch, you should be aware that the switch port delay should not exceed 10 microseconds.
3, compatibility
Industrial PoE switches and other Industrial Ethernet components should be able to communicate using the standard TCP/IP protocol. Under no circumstances should there be any incompatibility between Industrial Ethernet devices and commercial Ethernet devices. For different industrial fieldbus solutions, Industrial Ethernet devices should have the corresponding capabilities and compatibility.
In addition, in the process of selecting an industrial PoE switch, the user should also select an appropriate twisted pair or fiber interface according to some basic requirements such as transmission distance and transmission bandwidth. When connecting some devices such as video terminals and wireless base stations, PoE Ethernet power supply switches can be selected for wiring convenience. Optical Network View Industrial PoE switches have a very rich product line, from 1-24 ports, from network port to optical port, even opto-electric hybrid, with management and non-management models, to meet the needs of all industrial applications.