Functional Description
20NL31-00 E1
2019-02-13
Page 28
3
Functional Description
3.1
Power Supply
The NL31 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
3.2
Isolation Voltages
The isolation groups are defined as follows:
1 = Power in, GND
2 = Logic GND / Shield, SERVICE
3 = ETH1 to ETH12, PoE power in
-
ETH3 to ETH12 are connected to power supply PoE in and are therefore not
isolated from each other.
Table 4.
Isolation voltages (with A- or/and D-coded connectors)
Table 5.
Isolation voltages (with X-coded connectors)
Connector
Type
On NL31
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
See
Chapter 2.3.4 Connecting the Power Supply on page 21
for further information
about power supply connection.
Group
Number
1
2
2
1500 V AC
3
1500 V AC
1500 V AC
Group
Number
1
2
2
1500 V AC
3
1500 V AC
500 V AC
2
4
1
3
