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Contemporary Controls GmbH

EIPE series

Article: 00093974

Power over Ethernet (PoE) module

Each mid-span model has two RJ-45 connectors. The upper connector attaches to the upstream device. The lower one attaches to the end device. Transmit and receive signals pass between the two connectors as if the mid-span device were not present.

Both mid-span models support the 802.3af protocol. Each has a rugged metal enclosure and metal DIN-rail clip for control panel mounting.

The EIPE-1 Injector is powered from a 24 VAC/VDC source ? eliminating the need and expense of the 48 VDC power supply typically associated with PoE equipment. In many industrial control systems 24 VDC is readily available in the control panel, just like 24 VAC is available in a BAS system. Using its received power, the EIPE-1 internally generates the 48 VDC PoE power for the Powered Device (PD) ? eliminating grounded primary power concerns.

With the EIPE-1 powered up, an Ethernet cable is attached to the PD. No power is delivered to the PD until a valid 25 k? resistance, called the signature, is sensed by the EIPE-1. Once this value is sensed, the EIPE-1 applies power to the unused pairs and thereby powers the PD. Even if the total cable length is 100 m, the PD receives a minimum of 12.95 watts at its power pins. The EIPE-2 Splitter is powered by 48 VDC which it uses to internally generate the 24 VDC power for the non-PoE device and eliminate any concerns about grounded primary power. The maximum output power is 10 watts.

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