First industrial Power-over-Ethernet switch

August 2005 Operator Interfaces, Switches & Relays

GarrettCom is now offering the flexibility and cost-savings benefits of Power-over-Ethernet (PoE) to industrial applications with the introduction of its 4-port Magnum PS14P PoE Power Source Convenient Switch. The hardened PS14P switch is said to be the first industrial-spec switch to offer an IEEE 802.3af standards-compliant way to power and connect small devices such as IP phones, surveillance cameras, wireless access points and industrial sensors at the remote edges of an industrial network. The PS14P switch is premium-rated for temperature-uncontrolled environments with a temperature rating of -40 to 75°C, and resists dirt, moisture, and other threats from hostile industrial environments.

Originally developed to provide an inexpensive power source for VoIP phones being deployed in enterprises, PoE (IEEE 802.3af), enables power sourcing equipment (PSE) to provide power over standard twisted-pair Ethernet cabling to a compliant powered device (PD). PDs use PoE standard protocols to - and utilise - power transmitted over the data link. In effect, PoE provides a standards-based way to provide power to a wide variety of PDs in areas where it is physically or financially prohibitive to offer normal power.

The switch has four PoE-enabled RJ-45 ports that can drive 802.3af-compliant PDs as well as deliver 10/100 Mb data transmission over the same twisted-pair cable. The PS14P switches have an auto-sensing algorithm that cuts off power when 802.3af-compliant devices are not attached. Proprietary PoE and non-PoE equipment are not recognised, which protects them from possible damage. The PS14P switch supports the Power-over-Ethernet PSE standard for over-current protection, under-current detection, and fault protection.

The switch is about the size of a deck of playing cards, 89 x 76 x 25 mm, and weighs 150 g. Its four PoE RJ-45 ports can be supplemented by connecting the switch to a Magnum CS14P Converter Switch device or a Magnum ES42P Edge Switch to obtain fibre connectivity or additional non-PoE hardened Ethernet ports.

For more information contact Blaize Magee, WoodBeam, 011 606 2777, [email protected]

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