Siemens S7-1200 - Page 929

Technical specifications
A.9 Thermocouple and RTD signal modules (SMs)
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
929
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
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- 179 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 connections are used.
The resistance of the connection wires in 2 w
ire mode will cause an error in the sensor
reading and therefore accuracy is not guaranteed.