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Installation, Connecting Up, Commissioning, Operation; Important Notes On Using The Device; Notices On Use In Hazardous Areas - Siemens CM 1542-1 Operating Instructions Manual

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Installation, connecting up, commissioning, operation

3.1

Important notes on using the device

Safety notices on the use of the device
Note the following safety notices when setting up and operating the device and during all
associated work such as installation, connecting up or replacing the device.
LAN attachment
A LAN or LAN segment with the attachments belonging to it should be within a single low-
voltage supply system and within a single building. Make sure that the LAN is in an of type
A environment according to IEEE 802.3 or in a type 0 environment according to IEC TR
62101.
Never establish a direct electrical connection to TNV networks (telephone network) or
WANs (Wide Area Network).
3.1.1

Notices on use in hazardous areas

EXPLOSION HAZARD
DO NOT OPEN WHEN ENERGIZED.
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.
CM 1542-1
Operating Instructions, 07/2019, C79000-G8976-C355-04
WARNING
WARNING
WARNING
3
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