The poe system includes a complete poe system including power supply equipment (PSE, Power Sourcing Equipment) and power receiving equipment. The PSE device is a device that supplies power to the Ethernet client device, and is also the manager of the entire poe Ethernet power supply process. So which cores of the poe industrial Ethernet switch provide power supply, and what is the power supply line sequence of the poe industrial Ethernet switch?
Which cores of poe industrial Ethernet switch supply power
There are four pairs of twisted-pair cables in the standard five-category network cable, but only two of them are used in 10MBASE-T and 100M BASE-T.
In the case of the IEEE80 2.3af standard, 100M is allowed to use two connection methods: use idle pins for power supply, 4, 5 connection +, 7, 8 connection -, if it is to use idle lines (4, 5, 7, 8) to transmit 48v power supply.
The main point of applying DC power to the transmission transformer when the data pin is used for power supply. In this way, the pair 1, 2 and the pair 3, 6 can be any terminal. The core wire used for data transmission can transmit direct current at the same time, and its transmission uses a different frequency from the Ethernet data signal, so it does not affect the data transmission.
The PD device is the client device of the poe system. The two establish a connection with information about the PD connection, device type, and power consumption level of the power receiving device based on the IEEE 802.3af standard, and use this as a basis for PSE to pass through the Ethernet Power the PD.
What is the power supply line sequence of the poe industrial Ethernet switch
Poe power supply industrial Ethernet switch mainly includes two functions of network industrial Ethernet switch and poe power supply. It is mainly an industrial Ethernet switch that provides network power supply for remote power receiving terminals through a network cable.
The poe industrial Ethernet switch has two processes of power supply and power reception. If the front end is a standard poe, the end should also be a standard poe, so that the poe industrial Ethernet switch works normally. If the industrial Ethernet switch and the terminal do not support the poe function, then the industrial Ethernet switch should be connected to the poe power supply, and then connected to the end of the splitter to transmit to the terminal.
The industrial Ethernet switch does not support and the terminal supports it. The same is that the industrial Ethernet switch connects to the poe power supply and then receives the electrical equipment. The poe power supply adds the power to the network line and transmits it to the terminal. The good thing is that both the industrial Ethernet switch and the terminal can support Poe power supply, so that the Poe industrial Ethernet switch can be directly connected to the Poe-powered wireless AP and network camera through the network cable.
Poe power supply needs to work through a network cable. The quality of the network cable is relatively high. When choosing a network cable, it is recommended to choose a network cable made of oxygen-free copper, because the resistance of oxygen-free copper is small, the transmission effect is stable and the distance is relatively long, you can choose the national standard five. Class 6 network cables and national standard six network cables are used as transmission media.
The main points of this article introduce which cores of the poe industrial Ethernet switch provide power, and what is the power supply line sequence of the poe industrial Ethernet switch. In short, a poe industrial Ethernet switch is a kind of power supply device, and the power supply device is the manager of the entire poe Ethernet power supply process, and the powered device is a client that accepts the power supply of the poe industrial Ethernet switch.
