Functional Description
Page 28
3
Functional Description
3.1
Power Supply
The NL34 is supplied via a power inlet connector at the front panel.
Table 1.
Connector types – power supply (4-pin M12 A-coded)
Table 2.
Pin assignment - power supply (4-pin M12 A-coded)
Table 3.
Signal mnemonics – power supply
3.1.1
PoE+ Power Supply
To increase the available PoE power, you can connect an external PoE+ power supply,
e.g., MEN’s device PU28.
The NL34 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.
Connector
Type
On NL34
4-pin plug
e.g., CONEC SAL-12-ISW4/A6090
Mating
4-pin receptacle
1
PWR_IN
2
PWR_GND
3
PWR_GND
4
PWR_IN
Signal
Direction
Function
PWR_GND
In
GND
PWR_IN
In
Power in
Chapter 2.3.4 Connecting the Power Supply on page 21
for further information
about power supply connection.
See the switch firmware user manual:
www.men.de/products/nl34/#doc
2
4
1
3
