Siemens S7-1200 - Selection Tables for the SM 1231 RTD

Technical specifications
A.9 Thermocouple and RTD signal modules (SMs)
S7-1200 Programmable controller
928 System Manual, 03/2014, A5E02486680-AG
Pin
X10 (gold)
X11 (gold)
X12 (gold)
X13 (gold)
7
AI 0 I- /RTD
AI 2 I- /RTD
AI 4 I- /RTD
AI 6 I- /RTD
8
AI 1 M+ /RTD
AI 3 M+ /RTD
AI 5 M+ /RTD
A7 M+ /RTD
9
AI 1 M- /RTD
AI 3 M- /RTD
AI 5 M- /RTD
AI 7 M- /RTD
10
AI 1 I+ /RTD
AI 3 I+ /RTD
AI 5 I+ /RTD
AI 7 I+ /RTD
11
AI 1 I- /RTD
AI 3 I- /RTD
AI 5 I- /RTD
AI 7 I- /RTD
Note
The RTD unused channels can be deactivated. No erro
r will occur if an unused channel is
deactivated.
The RTD module needs to have the current loop continuous to eliminate extra stabilization
time which is automatically added to an unused channel that is not deactivated. For
consistency the RTD module shoul
d have a resistor connected (like the 2-wire RTD
connection).
A.9.2.1
Selection tables for the SM 1231 RTD
Table A- 178 Ranges and accuracy for the different sensors supported by the RTD modules
Temperature
coefficient
RTD type
Under range
minimum
1
Nominal
range low limit
Nominal
range high
limit
Over
range
maximum
2
Normal
range
accuracy
@ 25 °C
Normal range
accuracy
-20 °C to
60 °C
Pt 0.003850
ITS90
DIN EN 60751
Pt 100
climatic
-145.00 °C -120.00 °C 145.00 °C 155.00 °
C
±0.20 °C ±0.40 °C
Pt 10 -243.0 °C -200.0 °C 850.0 °C 1000.0 °
C
±1.0 °C ±2.0 °C
Pt 50
-243.0 °C -200.0 °C 850.0 °C 1000.0 °
C
±0.5 °C ±1.0 °C
Pt 100
Pt 200
Pt 500
Pt 1000
Pt 0.003902
Pt 0.003916
Pt 0.003920
Pt 100 -243.0 °C -200.0 °C 850.0 °C 1000.0 °
C
± 0.5 °C ±1.0 °C
Pt 200
-243.0 °C -200.0 °C 850.0 °C 1000.0 °
C
± 0.5 °C ±1.0 °C
Pt 500
Pt 1000
Pt 0.003910
Pt 10
-273.2 °C
-240.0 °C
1100.0 °C
1295 °C
±1.0 °C
±2.0 °C
Pt 50
-273.2 °C -240.0 °C 1100.0 °C 1295 °C ±0.8 °C ±1.6 °C
Pt 100
Pt 500