MEN NL31, Руководство пользователя

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Functional Description
20NL31-00 E1

2019-02-13 Page 29
3.3 Ethernet
The NL31 supports:

Two uplink ports:
- ETH1 and ETH2 or
- ETH25 and ETH26 (fiber ports, optional)

Mechanical connection of Ethernet ports ETH1 to ETH12: push-pull variant (Harting
concept)
3.3.1 PoE+ Power Supply
To increase the available PoE power, you can connect an external PoE+ power supply,
e.g., MEN’s device PU28.
The NL31 supports:

Input voltage: +52 V DC

Input current: 18 A max.
MEN’s PU28 delivers 500 W PoE power. This increases the total available PoE power to
590 W (load sharing with internal PoE power supply).
Note: Define the total available PoE power in the switch firmware.
Table 6. Connector types – 5-pin, M12, L-coded
Table 7. Pin assignment - power supply (5-pin M12 L-coded)
Table 8. Signal mnemonics – power supply
See the switch firmware user manual:
www.men.de/products/nl31/#doc
Connector Type
On NL31 5-pin plug
e.g., Phoenix Contact SACC-CI-M12MSL-4FE-L180 THR GR
Mating 5-pin receptacle
1 PWR_IN
2 PWR_GND
3 PWR_GND
4 PWR_IN
FE -
Signal Direction Function
PWR_GND In GND
PWR_IN In Power in
2
4 1
3