Enterasys Networks Enterasys Platinum Distributed Forwarding Engine 7G4285-49 - Manual (Page 44)

Connecting 48 Vdc Power for PoE Operation
3-12 Installation
Connecting 48 Vdc Power for PoE Operation
The Matrix N7 (7C105‐P) chassis provides 48 Vdc to connected PDs (powered devices) by
way of its backplane connection to a PoE‐compliant DFE module
such as the 7G4285‐49 or
7G4205‐72.
For a Matrix E7, (6C107), Matrix N3 (7C103) and Matrix N7 (7C107) chassis, an optional
external Enterasys Matrix N‐POE Power System is required to support PD connections to
the 7G4285‐49. The power from the Matrix N‐POE Power System is supplied through a
DC power cable connection to the front‐panel 48 Vdc Optional Power connector on the
7G4285‐49.
Refer to the Matrix N‐Series N‐POE Power System Installation Guide to install and connect a
Matrix N‐POE Power System to the 7G4285‐49.
Connecting to the Network
This section provides the procedures for connecting unshielded twisted pair (UTP)
segments from the network or other devices to the 7G4285‐49 and 7G4205‐72
(“
Connecting UTP Cables to DFE Modules ” on page 3‐13).
Warning: The 48 V wire harness contains two fuses, F11 and F29. If a fuse needs to be
replaced, it must be done by service personnel only. The fuse must be replaced with the
same Type and Rated fuse 20 A, 400 VDC.
Advertencia: E arnes del cable de 48V contiene dos fusibles, F11 y F29. Si un fusible
requiere ser reemplazado, debe ser hecho por personal de servicio unicamente. El fusible
debe ser reemplazado por uno del mismo tipo y clasificado como fusible de 20 A,
400 VDC.
Warnhinweis: Im Kabelbaum der 48V Zuleitung befinden sich 2 Sicherungen, F11 und
F29. Die Sicherung darf nur duch Fachpersonal getauscht werden und darf auch nur
durch den gleichen Typ ersetzt werden ( 20A / 400VDC ).
Note: If you are planning to install a PoE-compliant DFE module such as the 7G4285-49
in a Matrix N3 (7C103) or Matrix N7 (7C107) chassis, install and connect the Matrix
N-POE Power System before connecting to PDs.
Note: If the module is being installed in a network using Link Aggregation, there are rules
concerning the network cable and port configurations that must be followed for Link
Aggregation to operate properly. Before connecting the cables, refer to the Enterasys
Matrix DFE-Platinum Series Configuration Guide for the configuration information. For
details on how to obtain manuals, refer to the “
Related Documents ” in About This Guide .