Power Supply; Connecting Devices With 24 Vdc Power Supply; Connecting The External 24 Vdc Power Supply - Siemens SCALANCE XR-300M Operating Instructions Manual

RJ-11 plug
Pin
1
2
3
4
5
6
5.6

Power supply

5.6.1

Connecting devices with 24 VDC power supply

5.6.1.1

Connecting the external 24 VDC power supply

24 V safety extra-low voltage (SELV)
• The IE Switch X-300 is designed for operation with safety extra-low voltage (SELV).
• The power supply unit for the IE Switch X-300 power supply must meet NEC Class 2, as
• The power of all connected power supply units must total the equivalent of a power
• If the device is connected to a redundant power supply (two separate power supplies),
• The signaling contact can be subjected to a maximum load of
• Never operate the device with AC voltage or DC voltage higher than 32 VDC.
SCALANCE XR-300M
Compact Operating Instructions, 05/2016, A5E02661171-11
Assignment
n. c.
n. c.
TD (Transmit Data)
SG (Signal Ground)
RD (Receive Data)
n. c.
WARNING
This means that only SELV complying with IEC 60950-1 / EN60950-1 / VDE0805 can be
connected to the power supply terminals.
described by the National Electrical Code(r) (ANSI/NFPA 70).
source with limited power (LPS limited power source).
both power supplies must meet these requirements.
100 mA (safety extra-low voltage (SELV), 24 VDC).
D-sub 9-pin, female
Pin Assignment
1 n. c.
2 RD (Receive Data)
3 TD (Transmit Data)
4 n. c.
5 SG (Signal Ground)
6 n. c.
7 n. c.
8 n. c.
9 n. c.
Connecting
5.6 Power supply
45