Installation and connecting up
3.1 Important notes on using the device
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
30 Operating Instructions, 01/2017, C79000-G8976-C426-03
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.
Do not connect or disconnect cables to or from the device when a flammable or
combustible atmosphere is present.
Replacing components may impair suitability for Class 1, Division 2 or Zone 2.
When used in hazardous environments corresponding to Class I, Division 2 or Class I,
Zone 2, the device must be installed in a cabinet or a suitable enclosure.
In the ATEX and IECEx area of application only the Siemens DIN rail 6ES5 710-8MA11
may be used to mount the modules.