Siemens Simatic S7 Series System Manual

Technical specifications
A.5 Thermocouple and RTD expansion modules (EMs)
S7-200 SMART
634 System Manual, 09/2015, A5E03822230-AC
Temperature coef-
ficient
RTD type
Under range
minimum
1
Nominal
range low limit
Nominal
range high
limit
Over range
maximum
2
Normal
range accu-
racy
@ 25°C
Normal
range accu-
racy -20°C
to 60°C
Pt 100
Pt 500
Ni 0.006720
Ni 0.006180
Ni 100
-105.0°C -60.0°C 250.0°C 295.0°C ±0.5°C ±1.0°C
Ni 120
Ni 200
Ni 500
Ni 1000
LG-Ni 0.005000
LG-Ni 1000
-105.0°C
-60.0°C
250.0°C
295.0°C
±0.5°C
±1.0°C
Ni 0.006170
Ni 100
-105.0°C
-60.0°C
180.0°C
212.4°C
±0.5°C
±1.0°C
Cu 0.004270
Cu 10
-240.0°C
-200.0°C
260.0°C
312.0°C
±1.0°C
±2.0°C
Cu 0.004260
Cu 10
-60.0°C
-50.0°C
200.0°C
240.0°C
±1.0°C
±2.0°C
Cu 50
-60.0°C -50.0°C 200.0°C 240.0°C ±0.6°C ±1.2°C
Cu 100
Cu 0.004280
Cu 10
-240.0°C
-200.0°C
200.0°C
240.0°C
±1.0°C
±2.0°C
Cu 50
-240.0°C -200.0°C 200.0°C 240.0°C ±0.7°C ±1.4°C
Cu 100
1
RTD values below the under-range minimum value report -32768.
2
RTD values above the over-range maximum value report +32767.
Table A- 120 Resistance
Range
Under range
minimum
Nominal range
low limit
Nominal range
high limit
Over range
maximum
1
Normal range
accuracy
@ 25°C
Normal range
accuracy
-20°C to 60°C
150 Ω
n/a
0 (0 Ω)
27648 (150 Ω)
176.383 Ω
±0.05%
±0.1%
300 Ω
n/a
0 (0 Ω)
27648 (300 Ω)
352.767 Ω
±0.05%
±0.1%
600 Ω
n/a
0 (0 Ω)
27648 (600 Ω)
705.534 Ω
±0.05%
±0.1%
1
Resistance values above the over-range minimum value are reported as +32767.
Note
The module reports 32767 on any activated channel with no sensor connected. If open wire
detection is also
enabled, the module flashes the appropriate red LEDs.
When 500 Ω and 1000 Ω RTD ranges are used with other lower value resistors, the error
may increase to two times the specified error.
Best accuracy will be achieved for the 10 Ω RTD ranges if 4 wire conn
ections are used.
The resistance of the connection wires in 2 wire mode will cause an error in the sensor
reading and therefore accuracy is not guaranteed.

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.