Dycon Power Solutions has issued guidance to specifiers and installers of security systems on the pitfalls and benefits of using Power-over-Ethernet to drive security devices. PoE delivers the ability to provide a certain amount of power to drive local peripherals over existing network cabling, removing the need to provide separate power supply units adjacent to those devices.
Dycon stresses how much easier and cheaper installations could be if the need to fit 230vAC spur points all around a site to power the PSUs that are required for edge peripherals was eliminated. Where a network cable is run to a device there is no need for any other power.
The company goes on to state that if there is a need to move a device due to building alterations or because the risk has changed, with PoE all that is required is to relocate the network cable, with no need to search for a suitable location to pick up 230vAC.
The guidance points out that standard PoE delivers only 15W per channel. Higher-powered mid-span PoE units that conform to IEEE802.3af and IEEE802.3at PoE PLUS deliver 35W per channel, more than adequate for most security applications.
Dycon’s D1800 PoE range uses switched-mode technology which is the greenest solution available offering over 85-90 per cent efficiency as opposed to less than 30 per cent with most traditional linear power supply units.