Siemens SIMATIC S7-300 Module data User Manual

Priniples of analog value processing
4.2 Wiring transducers to analog inputs
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
4-5
4.2.2 Wiring electrically non-isolated transducers
Non-isolated transducer
Non-isolated sensors are connected to local ground potential (local ground.) Always connect
M
ANA
to local ground when using non-isolated transducers.
Local conditions or disturbance may cause potential differences CMV (static or dynamic)
between locally distributed measuring points. If the permissible CMV values is exceeded,
interconnect the measuring points by means of equipotential conductors.
Wiring non-isolated transducer to electrically isolated AI
When wiring non-isolated transducers to electrically isolated modules, the CPU / IM 153 can
be operated in grounded mode or ungrounded mode.
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Figure 4-3 Wiring non-isolated transducer to electrically isolated AI

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)