inS_CnGE28FX4TX_rEv–
08/31/12 PAGE 90
INSTALLATION AND OPERATION MANUAL
CNGE28FX4TX
Tech SupporT: 1.888.678.9427
PoE Configuration - Primary/backup Power Supply
PoE can have two power supplies. One is used as primary power source, and one as backup
power source. In case that the primary power source fails the backup power source will
take over. For being able to determine the amount of power the PD may use, it must be
defined what amount of power the primary and backup power sources can deliver. For the
CNGE28FX4TX, a built-in 1000W power supply can guarantee the power for each port.