SIMATIC S7-1200 – SM 1231 Analog Input Signal Modules – Siemens Modules

$ 267.74 – $ 501.60

SKU: N/A

The SM 1231 analog input signal modules convert analog signals from the process into digital signals for internal processing by the SIMATIC S7-1200 controller.

Siemens Modules S7-1200 Product Specifications:

Article number 6ES7231-4HD32-0XB0 6ES7231-4HF32-0XB0 6ES7231-5ND32-0XB0
Analog Input SM 1231, 4AI Analog Input SM 1231, 8AI Analog Input SM 1231, 4AI 16bit
General information
Product type designation SM 1231, AI 4×13 bit SM 1231, AI 8×13 bit SM 1231, AI 4×16 bit
Supply voltage
Rated value (DC) 24 V 24 V 24 V
Input current
Current consumption, typ. 45 mA 45 mA 65 mA
from backplane bus 5 V DC, typ. 80 mA 90 mA 80 mA
Power loss
Power loss, typ. 1.5 W 1.5 W 1.8 W
Analog inputs
Number of analog inputs 4; Current or voltage differential inputs 8; Current or voltage differential inputs 4; Current or voltage differential inputs
permissible input voltage for voltage input (destruction limit), max. 35 V 35 V ±35 V
permissible input current for current input (destruction limit), max. 40 mA 40 mA 40 mA
Cycle time (all channels) max. 625 µs 625 µs 100 µs
Input ranges
● Voltage Yes; ±10V, ±5V, ±2.5V Yes; ±10V, ±5V, ±2.5V Yes; ±10V, ±5V, ±2.5V or ±1.25V
● Current Yes; 4 to 20 mA, 0 to 20 mA Yes; 4 to 20 mA, 0 to 20 mA Yes; 4 to 20 mA, 0 to 20 mA
● Thermocouple No No No
● Resistance thermometer No No No
● Resistance No Yes No
Input ranges (rated values), voltages
● -1.25 V to +1.25 V Yes
● -10 V to +10 V Yes Yes Yes
— Input resistance (-10 V to +10 V) ≥9 MOhm ≥9 MOhm ≥1 MOhm
● -2.5 V to +2.5 V Yes Yes Yes
— Input resistance (-2.5 V to +2.5 V) ≥9 MOhm ≥9 MOhm ≥1 MOhm
● -5 V to +5 V Yes Yes Yes
— Input resistance (-5 V to +5 V) ≥9 MOhm ≥9 MOhm ≥1 MOhm
Input ranges (rated values), currents
● 0 to 20 mA Yes Yes Yes
— Input resistance (0 to 20 mA) 280 Ω 280 Ω
● 4 mA to 20 mA Yes Yes Yes
— Input resistance (4 mA to 20 mA) 280 Ω 280 Ω
Thermocouple (TC)
Temperature compensation
— parameterizable No
Analog value generation for the inputs
Integration and conversion time/resolution per channel
● Resolution with overrange (bit including sign), max. 12 bit; + sign 12 bit; + sign 15 bit; + sign
● Integration time, parameterizable Yes Yes Yes
● Interference voltage suppression for interference frequency f1 in Hz 40 dB, DC to 60 V for interference frequency 50 / 60 Hz 40 dB, DC to 60 V for interference frequency 50 / 60 Hz 40 dB, DC to 60 V for interference frequency 50 / 60 Hz
Smoothing of measured values
● parameterizable Yes Yes Yes
● Step: None Yes Yes Yes
● Step: low Yes Yes Yes
● Step: Medium Yes Yes Yes
● Step: High Yes Yes Yes
Errors/accuracies
Temperature error (relative to input range), (+/-) 25 °C ±0.1%, to 55 °C ±0.2% total measurement range 25 °C ±0.1%, to 55 °C ±0.2% total measurement range 25 °C ±0.1% / ±0.3% total measurement range
Basic error limit (operational limit at 25 °C)
● Voltage, relative to input range, (+/-) 0.1 % 0.1 % 0.1 %
● Current, relative to input range, (+/-) 0.1 % 0.1 % 0.1 %
Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency
● Common mode voltage, max. 12 V 12 V 12 V
Interrupts/diagnostics/status information
Alarms Yes Yes Yes
Diagnostics function Yes Yes Yes
Alarms
● Diagnostic alarm Yes Yes Yes
Diagnoses
● Monitoring the supply voltage Yes Yes Yes
● Wire-break Yes Yes Yes
Diagnostics indication LED
● for status of the inputs Yes Yes Yes
● for maintenance Yes Yes Yes
Degree and class of protection
IP degree of protection IP20 IP20 IP20
Standards, approvals, certificates
CE mark Yes Yes Yes
CSA approval Yes Yes Yes
UL approval Yes Yes Yes
cULus Yes Yes Yes
FM approval Yes Yes Yes
RCM (formerly C-TICK) Yes Yes Yes
KC approval Yes Yes Yes
Marine approval Yes Yes Yes
Ambient conditions
Free fall
● Fall height, max. 0.3 m; five times, in product package 0.3 m; five times, in product package 0.3 m; five times, in product package
Ambient temperature during operation
● min. -20 °C -20 °C -20 °C
● max. 60 °C 60 °C 60 °C
● horizontal installation, min. -20 °C -20 °C -20 °C
● horizontal installation, max. 60 °C 60 °C 60 °C
● vertical installation, min. -20 °C -20 °C -20 °C
● vertical installation, max. 50 °C 50 °C 50 °C
Ambient temperature during storage/transportation
● min. -40 °C -40 °C -40 °C
● max. 70 °C 70 °C 70 °C
Air pressure acc. to IEC 60068-2-13
● Operation, min. 795 hPa 795 hPa 795 hPa
● Operation, max. 1 080 hPa 1 080 hPa 1 080 hPa
● Storage/transport, min. 660 hPa 660 hPa 660 hPa
● Storage/transport, max. 1 080 hPa 1 080 hPa 1 080 hPa
Relative humidity
● Operation at 25 ℃ without condensation, max. 95 % 95 % 95 %
Pollutant concentrations
● SO2 at RH < 60% without condensation S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free
connection method / header
required front connector Yes Yes Yes
Mechanics/material
Enclosure material (front)
● Plastic Yes Yes Yes
Dimensions
Width 45 mm 45 mm 45 mm
Height 100 mm 100 mm 100 mm
Depth 75 mm 75 mm 75 mm
Weights
Weight, approx. 180 g 180 g 180 g
Weight N/A
Dimensions N/A

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