Siemens SIMATIC S7 System Manual page 756

Technical specifications
A.5 Thermocouple and RTD expansion modules (EMs)
The ranges and accuracy for the different thermocouple types supported by the EM AT04
Thermocouple expansion module are shown in the table below.
Table A- 121 EM AT04 Thermocouple selection table
Type Under-range
minimum
J -210.0 °C
K -270.0 °C
T -270.0 °C
E -270.0 °C
R & S -50.0 °C
B 0.0 °C
--
N -270.0 °C
C 0.0 °C
TXK/XK(L) -200.0 °C
Voltage -32512
Thermocouple values below the under-range minimum value are reported as -32768.
1
Thermocouple values above the over-range maximum value are reported as 32767.
2
Internal cold junction error is ±1.5 °C for all ranges. This adds to the error in this table. The module requires at least 30
3
minutes of warm-up time to meet this specification.
In the presence of radiated radio frequency of 970 MHz to 990 MHz, the accuracy of the EM AT04 AI 4 x 16 bit TC may
4
be degraded.
Note
Thermocouple channel
Each channel on the Thermocouple expansion module can be configured with a different
thermocouple type (selectable in the software during configuration of the module).
Table A- 122 Noise reduction and update times for the EM AT04 Thermocouple
Rejection frequency selection
400 Hz (2.5 ms)
60 Hz (16.6 ms)
50 Hz (20 ms)
10 Hz (100 ms)
To maintain module resolution and accuracy when 400 Hz rejection is selected, the integration time is 10 ms. This
1
selection also rejects 100 Hz and 200 Hz noise.
756
Nominal range
low limit
1
-150.0 °C
-200.0 °C
-200.0 °C
-200.0 °C
100.0 °C
200.0 °C
800.0 °C
-200.0 °C
100.0 °C
-150.0 °C
-27648
-80mV
Integration time
16.67 ms
Nominal range Over-range
high limit maximum
1200.0 °C 1450.0 °C
1372.0 °C 1622.0 °C
400.0 °C 540.0 °C
1000.0 °C 1200.0 °C
1768.0 °C 2019.0 °C
800.0 °C --
1820.0 °C 1820 °C
1300.0 °C 1550.0 °C
2315.0 °C 2500.0 °C
800.0 °C 1050 °C
27648 32511
80mV
10 ms
1
20 ms
100 ms
Normal range
3, 4
accuracy @ 25 °C
2
±0.3 °C
±0.4 °C
±0.5 °C
±0.3 °C
±1.0 °C
±2.0 °C
±1.0 °C
±1.0 °C
±0.7 °C
±0.6 °C
±0.05%
4 Channel module update time (seconds)
0.143
0.223
0.263
1.225
System Manual, V2.3, 07/2017, A5E03822230-AF
Normal range
1, 2
accuracy -20 °C
to 55 °C
±0.6 °C
±1.0 °C
±1.0 °C
±0.6 °C
±2.5 °C
±2.5 °C
±2.3 °C
±1.6 °C
±2.7 °C
±1.2 °C
±0.1%
S7-200 SMART