Submitted by: Sam Smith

As the new building projects advance in their technology, more and more institutions around the world are looking to implement IP, network based systems the most advanced devices in building integration today. When engineers and contractors create these buildings with this technology, systems like IP clocks, time attendance machines, computers, printers, and many other systems can work together and communicate over the network. However, as these professionals integrate this technology into the building project, one addition to their network infrastructure that should not go overlooked is PoE infrastructure. PoE stands for Power over Ethernet, a simple technology that allows the user to have an IP based product that receives both the power necessary to operate and the data necessary to perform the device s specific task through one Ethernet connection. And one of the most popular and easily implemented PoE devices for facilities all over the world is the PoE clock. This article will explain the requirements these engineers and contractors must implement into the building in order to make a PoE clock system possible.

To have PoE capability, one of the main components necessary is the device that combines the power and data onto one cable. Engineers and contractors installing these PoE clock systems have the choice of either using a PoE switch or PoE injector. The switch, similar to the server or router placed in the control room, is comprised of multiple Ethernet inputs and outputs. The input is the connection coming from the router, providing an IP address and a connection to the facility s network. The output is the PoE connection of power and data on the same cable, going all the way to a jack or gang box in the wall. Each output will be dedicated to one PoE clock. The PoE injector performs the same task, but is generally not located in the control and is capable of providing PoE capability to only one clock. This means that for every PoE clock in the building, there will be a PoE injector. The injector will connect to a power supply and an Ethernet jack in the wall. The output of the injector will be one Ethernet cord that will connect to the PoE clock, providing data and power in the same line.

A building with just an internet connection or network, while it will allow the use of IP devices, will not be adequate to utilize PoE technology. In order for a facility to have devices like the PoE clock receive data and power through the same Ethernet cord, limiting wiring usage and costs, the building will require the extra implementation of PoE infrastructure. Whether it s the use of a PoE switch or individual PoE injectors, engineers and contractors will want to install one of these technologies during the creation of the building making final implementation of the PoE clocks easier. When IP clocks transformed into PoE clocks with this capability, the end user will ultimately have a clock system that is more efficient and less cumbersome.

About the Author: Sam Smith is a Marketing Coordinator at Sapling Inc.

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