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Siemens 6ES7231-4HF50-0XB0 SIMATIC S7-1200 SM 1231 8AI 14-Bit Analog Input Module

% $-495.77
Siemens 6ES7231-4HF50-0XB0 SM 1231 SIMATIC S7-1200 analog input module - 8AI 14-bit
Siemens 6ES7231-4HF50-0XB0 SM 1231 SIMATIC S7-1200 analog input module - 8AI 14-bit

Siemens 6ES7231-4HF50-0XB0 SIMATIC S7-1200 SM 1231 8AI 14-Bit Analog Input Module

Brand: Siemens
Reference No: 6ES7231-4HF50-0XB0
Catalog No: 6ES7231-4HF50-0XB0
Series: SIMATIC S7-1200
Tariff Code (HS): 85389091
Rated Voltage: 24 V
Stock: 99
Delivery time: 1-2 business day(s)
Shipping Origin: Türkiye EXW
$495.77

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  • Description

The Siemens 6ES7231-4HF50-0XB0 is a SIMATIC S7-1200 SM 1231 analog input module with 8 channels of 14-bit differential voltage or current inputs (plus/minus 10 V, 5 V, 2.5 V, or 0/4-20 mA). It plugs onto the S7-1200 backplane bus and converts all 8 channels in a maximum cycle time of 1.25 ms. Input resistance is at least 1 MOhm on the voltage ranges.

Technical Specifications

SKU 6ES7231-4HF50-0XB0
Brand Siemens
Series SIMATIC S7-1200
Product type designation SM 1231, AI 8x 14 bit
Supply voltage, rated (DC) 24 V
Analog inputs 8, current or voltage differential inputs
Cycle time (all channels), max. 1.25 ms at 400 Hz rejection
Input ranges, voltage +/-10 V, +/-5 V, +/-2.5 V
Input ranges, current 4 to 20 mA, 0 to 20 mA
Resolution with overrange, max. 13 bit + sign
Basic error limit, voltage (+/-) 0.1 %
Basic error limit, current (+/-) 0.1 %
IP degree of protection IP20
Dimensions (W x H x D) 30 x 125 x 100 mm
Weight, approx. 175 g

Certifications & Standards

  • CE
  • UL
  • cULus
  • RCM
  • KC

Selection Notes

This SM 1231 variant offers 8 configurable channels, useful when a single module needs to cover mixed voltage and current transducers on one backplane slot. Each channel independently selects between +/-10 V, +/-5 V, +/-2.5 V, or 4-20 mA/0-20 mA, so sensor types can be mixed without adding a second module. The 1.25 ms full-scan cycle time across all 8 channels, with 400 Hz noise rejection, keeps this module fast enough for process loops that poll analog values every control cycle.

Applications

Typical uses include reading 4-20 mA process transmitters for pressure, level, and flow, plus/minus 10 V analog sensors, and mixed sensor types on machine and process skids controlled by an S7-1200 CPU.

Technical Details

Short Description
SIMATIC S7-1200 SM 1231 analog input module: 8 AI, 14-bit, +/-10V or 4-20mA, IP20.
Rated Voltage (VAC)
24 V
Mounting Type
Plug-in
Protection Type
IP20
Catalog No
6ES7231-4HF50-0XB0
Standards
CE mark, UL approval, cULus, RCM (formerly C-TICK), KC approval
Delivery Date (Days)
1-2 days
Model Number
6ES7231-4HF50-0XB0
Tariff Code
85389091

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