Connecting Up; Safety When Connecting Up - Siemens SCALANCE XRH-300 Product Manual

Connecting up

6.1

Safety when connecting up

Safety notices
When connecting up the device, keep to the safety notices listed below.
If using power sources according to NEC Class 2 or PS2/LPS complying with UL 62368-1, please
note the following information.
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 must meet the requirements for ES1/SELV
and PS2/LPS complying with IEC/UL 62368-1.
The power supply also needs to meet at least one of the following conditions:
• Only safety extra low voltage (SELV) with limited power source (Limited Power Source, LPS /
• 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.
Do not remove or replace while circuit is live when a flammable or combustible atmosphere is
present.
Note
No light power measurement (PROFINET diagnostics)
The devices do not support diagnostics with light power measurement.
SCALANCE XRH-300/XRM-300
Equipment Manual, 10/2022, C79000-G8976-C546-01
WARNING
Power Source Class 2, PS2) complying with 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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