SCALANCE SC-600
Operating Instructions, 10/2021, C79000-G8976-C453-04
51
Connecting
6.1 Safety when connecting up
Safety notices
When connecting up the device, keep to the safety notices listed below.
WARNING
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 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.
• The power supply unit for the device must meet NEC Class 2 according to the
National Electrical Code (r) (ANSI / NFPA 70).
If the equipment is connected to a redundant power supply (two separate power
supplies), both must meet these requirements.
NOTICE
Failure of the data traffic due to contamination of optical plug-in connections
Optical sockets and plugs are sensitive to contamination of the end face.
Contamination can lead to the failure of the optical transmission network. Take the
following precautions to avoid functional impairments:
• Clean the end face of field-assembled connectors carefully before connecting. No
residues of processing may remain on the connector.
• Only remove the dust caps of optical transceivers and pre-configured cables shortly
before connecting the cables.
• Close unused optical sockets and plugs as well as pluggable transceivers and slots
with the supplied protective caps.
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