Connecting Up; Safety When Connecting Up - Siemens SCALANCE M874-2 Operating Instructions Manual

Industrial remote communication remote networks

Hide thumbs Also See for SCALANCE M874-2:

Table of Contents

Connecting up

3.1

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

SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION

2 OR ZONE 2.

EXPLOSION HAZARD

DO NOT OPEN WHEN ENERGIZED.

SCALANCE M874, M876

Operating Instructions, 07/2014, C79000-G89760-C331-03

WARNING

Table of Contents

Show Quick Links

Table of Contents

Scalance m874 Scalance m874-3 Scalance m876 Scalance m876-3