Siemens S7-1200 User Manual

Installation, connecting up, commissioning
3.1 Important notes on using the device
CP 1243-7 LTE
34 Operating Instructions, 01/2015, C79000-G8976-C381-01
3.1.1
Notices on use in hazardous areas
WARNING
EXPLOSION HAZARD
DO NOT OPEN WHEN ENERGIZED.
WARNING
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.
WARNING
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.
WARNING
EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION
2 OR ZONE 2.
WARNING
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.

Siemens S7-1200 Specifications

General

Digital Inputs	Integrated in CPU or via signal modules (SM)
Digital Outputs	Integrated in CPU or via signal modules (SM)
Analog Inputs	Integrated in CPU or via signal modules (SM)
Analog Outputs	Integrated in CPU or via signal modules (SM)
Communication	PROFINET
Communication Ports	1 x PROFINET
I/O Modules	Signal Modules (SM)
Programming	STEP 7
Power Supply	24V DC
Operating Temperature	0°C to 55°C
Expansion Modules	Communication Modules (CM), Battery Modules (BM)