Connecting Up; Safety When Connecting Up - Siemens SIMATIC NET SCALANCE M826 Operating Instructions Manual

Connecting up

EXPLOSION HAZARD
Replacing components may impair suitability for Class 1, Division 2 or Zone 2.
EXPLOSION HAZARD
Do not open the device when the supply voltage is turned on.
4.1

Safety when connecting up

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, 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.
SCALANCE M826
Operating Instructions, 08/2018, C79000-G8976-C362-05
WARNING
WARNING
WARNING
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