Connecting Up; Safety When Connecting Up - Siemens SIMATIC NET SCALANCE XCM-300 Product Manual

Connecting up

6.1

Safety when connecting up

Safety notices for operation with a power supply according to NEC Class 2
Operate the device with a power supply according to NEC Class 2. When connecting up the
device, keep to the safety notices listed below.
Power supply
The device is designed for operation with a directly connectable safety extra low voltage (SELV)
from a limited power source (LPS).
The power supply therefore needs to meet at least one of the following conditions:
• Only safety extra low voltage (SELV) with limited power source (LPS) complying with IEC
• The power supply unit for the device must meet NEC Class 2 according to the National
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
Safety extra low voltage
The device is designed for operation with a directly connectable safety extra-low voltage (SELV)
according to UL/IEC 61010-1 and UL/IEC 61010-2-201 whose output power corresponds to
"Limited Energy" according to UL/IEC 61010-1.
SCALANCE XCM-300
Product Manual, 04/2022, C79000-G8976-C585-01
WARNING
60950‑1 / EN 60950‑1 / VDE 0805‑1 or IEC 62368-1 / EN 62368-1 / VDE 62368-1 may be
connected to the power supply terminals.
Electrical Code (r) (ANSI / NFPA 70).
WARNING
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