Smart Buildings
Product Overview
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IS/S 8.1.1, ISP/S 8.1.1 | 9AKK107992A0761 EN Rev. B 27
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3.5.5
Ethernet PoE Ports
8 x 10/100-Mbit/s twisted pair port
according to the IEEE 802.3 10BASE-T/100BASE-TX standard
Port RJ45 socket
Port supports:
•
Autonegotiation
•
Autopolarity
•
Autocrossing
•
100 Mbit/s half-duplex mode, 100 Mbit/s full duplex mode
•
10 Mbit/s half-duplex mode, 10 Mbit/s full duplex mode
•
Power over Ethernet (PoE) 55W
Table 10: Ethernet PoE Ports
3.5.6
Derating
Note the derating values for PoE device variants. The derating values depend on the ambient air
temperature of the power supply unit combined with the PoE load and the input voltage.
Ambient air temperature
Permitted PoE load
up to 45 °C (113 ° F)
55 W
45 °C ... 50 °C (113 °F … 122 °F)
45 W
50 °C ... 55 °C (122 °F … 131 °F)
37 W
55 °C ... 60 °C (131 °F … 140 °F)
29 W
Tab. 11: Permitted PoE load in relation to ambient air temperature
Input voltage
Derating of PoE load
from 100 V AC
0 W
100 V AC ... 90 V AC
5 W
90 V AC ... 85 V AC
8 W
Tab. 12: Additional derating of PoE load in relation to input voltage
