Thermocouple And Rtd Signal Modules (Sms); Sm 1231 Thermocouple - Siemens S7-1200 System Manual

A.9

Thermocouple and RTD signal modules (SMs)

A.9.1

SM 1231 Thermocouple

Table A- 163 General specifications
Model
Order number
Dimensions W x H x D (mm)
Weight
Power dissipation
Current consumption (SM Bus)
Current consumption (24 VDC)
20.4 to 28.8 VDC (Class 2, Limited Power, or sensor power from PLC)
1
Table A- 164 Analog inputs
Model
Number of inputs
Range
Nominal range (data word)
Overrange/underrange (data word)
Overflow/underflow (data word)
Resolution Temperature
Voltage
Maximum withstand voltage
Noise rejection
Common mode rejection
Impedance
Isolation Field to logic
Field to 24 VDC
24 VDC to logic
Channel to channel
Accuracy
Repeatability
Measuring principle
Module update time
Cold junction error
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
SM 1231 AI 4 x 16 bit TC
6ES7 231-5QD32-0XB0
45 x 100 x 75
180 grams
1.5 W
80 mA
40 mA
1
SM 1231 AI 4 x 16 bit TC
4
See Thermocouple selection table
(Page 923).
0.1 °C/0.1 °F
15 bits plus sign
± 35 V
85 dB for selected filter setting
(10 Hz, 50 Hz, 60 Hz or 400 Hz)
> 120 dB at 120 VAC
≥ 10 MΩ
500 VAC
500 VAC
500 VAC
120 VAC
See Thermocouple selection table
(Page 923).
±0.05% FS
Integrating
See Noise reduction selection table
(Page 923).
±1.5 °C
A.9 Thermocouple and RTD signal modules (SMs)
SM 1231 AI 8 x 16 bit TC
6ES7 231-5QF32-0XB0
45 x 100 x 75
190 grams
1.5 W
80 mA
40 mA
SM 1231 AI 8 x 16 bit TC
8
See Thermocouple selection table
(Page 923).
0.1 °C/0.1 °F
15 bits plus sign
± 35 V
85 dB for selected filter setting
(10 Hz, 50 Hz, 60 Hz or 400 Hz)
> 120 dB at 120 VAC
≥ 10 MΩ
500 VAC
500 VAC
500 VAC
120 VAC
See Thermocouple selection table
(Page 923).
±0.05% FS
Integrating
See Noise reduction selection table
(Page 923).
±1.5 °C
Technical specifications
919