HANSUN Hansun POE Switch working process:
Detection: At the beginning, the poe switch outputs a very small voltage at the port until it detects that the connection of the cable terminal is a power-receiving device that supports the IEEE802.3af standard.
PD device classification: After detecting the PD of the power receiving device, the poe switch may classify the PD device and evaluate the power loss required by the PD device.
Start of power supply: In a configurable time (generally less than 15μs) during the startup period, the poe switch starts to supply power to the PD device from a low voltage until it provides a 48V DC power supply.
Power supply: Provides stable and reliable 48V DC power for PD equipment to meet the power consumption of PD equipment that does not exceed 15.4W.
Power failure: If the PD device is disconnected from the network, the poe switch will quickly (usually within 300-400ms) stop powering the PD device, and repeat the detection process to detect whether the terminal of the cable is connected to the PD device.
A complete POE system includes two parts: Power Sourcing Equipment (PSE) and Power Device (PD). Poe switches are a type of PSE equipment. PSE equipment is a device that supplies power to Ethernet client devices, and it is also the manager of the entire POE Ethernet power supply process. The PD device is a PSE load that receives power, that is, the client of the POE system.
