Analog Signal Modules (Sms); Sm 1231 Analog Input Module Specifications - Siemens S7-1200 System Manual

A.8

Analog signal modules (SMs)

A.8.1

SM 1231 analog input module specifications

Table A- 137 General specifications
Model
Order number
Dimensions W x H x D (mm)
Weight
Power dissipation
Current consumption (SM Bus)
Current consumption (24 VDC)
Table A- 138 Analog inputs
Model
Number of inputs
Type
Range
Full scale range (data word)
Overshoot/undershoot range
(data word)
Refer to the section on analog input
ranges for voltage and current
(Page 916).
Overflow/underflow (data word)
Refer to the section on input
ranges for voltage and current
(Page 916).
Resolution1
Maximum withstand voltage/current ±35 V / ±40 mA
Smoothing
Noise rejection
Input impedance
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
SM 1231 AI 4 x 13 bit
6ES7 231-4HD32-0XB0
45 x 100 x 75
180 grams
2.2 W
80 mA
45 mA
SM 1231 AI 4 x 13 bit
4
Voltage or current (differential): Selectable in groups of
2
±10 V, ±5 V, ±2.5 V, 0 to 20 mA, or 4 mA to 20 mA
-27648 to 27648 voltage / 0 to 27648 current
Voltage: 32511 to 27649 / -27649 to -32,512
Current: 32511 to 27649 / 0 to -4864
Voltage: 32767 to 32512 / -32513 to -32768
Current 0 to 20 mA: 32767 to 32512 / -4865 to -32768
Current 4 to 20 mA: 32767 to 32512 (values below -4864 indicate open wire)
12 bits + sign bit
None, weak, medium, or strong
Refer to the section on step response times (Page 916).
400, 60, 50, or 10 Hz
Refer to the section on sample rates (Page 916).
≥ 9 MΩ (voltage) / 280 Ω (current)
A.8 Analog signal modules (SMs)
SM 1231 AI 8 x 13 bit
6ES7 231-4HF32-0XB0
45 x 100 x 75
180 grams
2.3 W
90 mA
45 mA
SM 1231 AI 8 x 13 bit
8
Technical specifications
SM 1231 AI 4 x 16 bit
6ES7 231-5ND30-0XB0
45 x 100 x 75
180 grams
2.0 W
80 mA
65 mA
SM 1231 AI 4 x 16 bit
4
Voltage or current
(differential)
±10 V, ±5 V, ±2.5 V, ±1.25
V, 0 to 20 mA or 4 mA to
20 mA
15 bits + sign bit
≥ 1 MΩ (voltage) /
<315 Ω, >280 Ω (current)
907