Connecting up
5
5.1 Safety when connecting up
Safety notices
When connecting up the device, keep to the safety notices listed below.
WARNING
The equipment is designed for operation with Safety Extra-Low Voltage (SELV) by a Limited
Power Source (LPS).
This means that only SELV / LPS complying with IEC 60950-1 / EN 60950-1 / VDE 0805-1
must be connected to the power supply terminals, or the power supply unit for the equipment
power supply must comply with NEC Class 2, as described by 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.
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
WARNING
EXPLOSION HAZARD
Do not connect or disconnect cables to or from the device when a flammable or combustible
atmosphere is present.
Safety notices when using the device according to Hazardous Locations (HazLoc)
If you use the device under HazLoc conditions you must also keep to the following safety
notices in addition to the general safety notices for protection against explosion:
WARNING
EXPLOSION HAZARD
You may only connect or disconnect cables carrying electricity when the power supply is
switched off or when the device is in an area without inflammable gas concentrations.
SCALANCE XB-100
Operating Instructions, 02/2019, C79000-G8976-C473-03 23
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