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Connecting up

5.1

Safety notices

When connecting up the device, keep to the safety notices listed below.

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. 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

EXPLOSION HAZARD

DO NOT CONNECT OR DISCONNECT EQUIPMENT 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:

EXPLOSION HAZARD

DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE

NON-HAZARDOUS.

Extender for SCALANCE XM-400

Operating Instructions, 05/2014, C79000-G8976-C332-03

WARNING