Poe Power Supply Of The Pe408Poe - Siemens SIMATIC NET SCALANCE XM-400 Operating Instructions Manual

6.3

PoE power supply of the PE408PoE

Notes on the PoE power supply
Incorrect power supply
The power of all connected power supply units must total the equivalent of a power source with
limited power (LPS limited power source).
If the device is connected to a redundant power supply (two separate power supplies), both
must meet these requirements.
Never operate the device with AC voltage or DC voltage higher than 60 V DC.
Information on the PoE power supply
• You can connect a different PoE power supply to each of the two connectors, see e.g. section
"Accessories (Page 24)".
• Devices capable of PoE can be supplied with power via the ports, see section "Power over
Ethernet (PoE) (Page 28)".
• For the PE408PoE to be able to supply a powered device, the connected PoE power supply
must provide an output voltage of 54 V.
• The power supply is connected using two 2-pin plug-in terminal blocks (spring-loaded
terminal). The terminal blocks ship with the device.
• The terminal block L1+/M1 provides the PoE power supply of ports P1 to P4. The terminal
block L2+/M2 provides the PoE power supply of ports P5 to P8.
• To wire up the power connector, use a copper cable of category 18-12 AWG or cable with a
cross-section of 0.75 to 2.5 mm².
• The cable for connecting the power source to the connectors L1+/M1 or L2+/M2 can be a
maximum of 3 m long.
Position and assignment
Figure 6-1
Extender for SCALANCE XM-400
Operating Instructions, 03/2021, C79000-G8976-C332-10
WARNING
Position of the PoE power supply on the PE408PoE and the assignment of the terminal blocks
6.3 PoE power supply of the PE408PoE
Connecting up
45