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Siemens 6ES7231-4HF32-0XB0 SIMATIC S7-1200 Analog Input SM 1231
The Siemens 6ES7231-4HF32-0XB0 is a SIMATIC S7-1200 SM 1231 analog input module with 8 differential analog input channels for voltage and current measurement. It supports ±10 V, ±5 V, ±2.5 V, 0–20 mA, and 4–20 mA signals with 12-bit resolution plus sign bit, making it suitable for industrial instrumentation, process monitoring, and machine automation. The module also provides parameterizable integration time, measured-value smoothing, and diagnostic functions for dependable analog signal acquisition.
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Categories: PLC I/O Modules
Description
The Siemens SIMATIC S7-1200 SM 1231 AI 8×13 bit provides 8 differential analog inputs for standard voltage and current signals. Voltage inputs support ±10 V, ±5 V, and ±2.5 V, while current inputs support 0–20 mA and 4–20 mA. Siemens specifies 12-bit resolution plus sign, corresponding to a 13-bit ADC, with input resistance of ≥9 MΩ for voltage signals and 280 Ω for current signals. The module has a maximum cycle time of 625 µs for all channels, allowing responsive analog signal monitoring in S7-1200 control systems.
The module uses an integrating measurement principle and supports selectable signal ranges, configurable measurement parameters, and diagnostic monitoring. It is designed for use with the SIMATIC S7-1200 system and includes a required front connector for field wiring. Its compact design makes it suitable for expanding analog input capacity where multiple voltage and current signals need to be monitored from one module.
QTech Safety is a leading supplier of Siemens 6ES7231-4HF32-0XB0 SIMATIC S7-1200 Analog Input SM 1231 in Ireland, offering competitive prices and fast worldwide shipping across United Kingdom (UK), Germany, France, Italy, Spain, United States USA, Canada, Mexico, and Western Australia (Perth). Buy Siemens PLC I/O Modules from one of Ireland’s most trusted industrial safety equipment suppliers.
Features of Siemens 6ES7231-4HF32-0XB0 SIMATIC S7-1200 Analog Input SM 1231
- SIMATIC S7-1200 SM 1231 analog input module for industrial automation.
- Provides 8 differential analog input channels.
- Supports both voltage and current measurement.
- Supports ±10 V, ±5 V, and ±2.5 V voltage ranges.
- Supports 0–20 mA and 4–20 mA current ranges.
- Provides 12-bit resolution plus sign bit.
- Uses an integrating measurement principle.
- Supports configurable integration time and measured-value smoothing.
- Provides a maximum cycle time of 625 µs for all channels.
- Includes diagnostic functions for reliable analog signal monitoring.
- Supports shielded cables up to 100 m.
- Designed for compact S7-1200 control and monitoring applications.
Technical Specifications of Siemens 6ES7231-4HF32-0XB0
- Product type: SM 1231, AI 8×13 bit
- Product family: SM 1231 analog input modules
- Number of analog inputs: 8
- Input type: Differential voltage or current
- Voltage ranges: ±10 V, ±5 V, ±2.5 V
- Current ranges: 0–20 mA, 4–20 mA
- Resolution: 12 bit + sign
- ADC resolution: 13 bit
- Measurement principle: Integrating
- Voltage input impedance: ≥9 MΩ
- Current input impedance: 280 Ω
- Maximum input voltage: 35 V
- Maximum input current: 40 mA
- Maximum cycle time: 625 µs, all channels
- Rated supply voltage: 24 V DC
- Typical current consumption: 60 mA
- Typical current from 5 V backplane bus: 90 mA
- Typical power loss: 1.5 W
- Input cable length: Up to 100 m
- Temperature range, horizontal installation: −20°C to 60°C
- Temperature range, vertical installation: −20°C to 50°C
- Storage/transport temperature: −40°C to 70°C
- Relative humidity: Up to 95% at 25°C, without condensation
- Interference suppression: 50/60 Hz
- Measured-value smoothing: Parameterizable
- Thermocouple measurement: No
- RTD measurement: No
- Resistance measurement: No
- Diagnostics: Yes
- Diagnostic alarm: Yes
- Signal indication: LED status indication
- Front connector: Required
- Degree of protection: IP20
- Dimensions (W × H × D): 45 × 100 × 75 mm
- Weight: Approx. 180 g
Applications
The Siemens 6ES7231-4HF32-0XB0 SIMATIC S7-1200 Analog Input SM 1231 is commonly used in:
- Monitoring 0–20 mA and 4–20 mA industrial transmitters
- Measuring standard ±10 V process and machine signals
- Process instrumentation and analog signal monitoring
- Machine automation and control panels
- General-purpose analog data acquisition
- Expanding analog input capacity in S7-1200 systems
Why Choose QTech Safety?
At QTech Safety, we’re more than just a safety supplier we’re your trusted partner in workplace protection and compliance.
Here’s why companies across UK and Ireland (EU) choose us for safety products and training:
- Comprehensive Range of Safety Equipment:
From gas detection and PPE to industrial safety tools, we offer one of the widest selections of trusted brands all at competitive Irish market prices. - Test & Measurement Instruments You Can Trust:
We supply a wide range of test and measurement instruments from the most leading and trusted brands, including industrial sensors, multimeters, oscilloscopes, accelerometers, proximity sensors, and other advanced measurement tools to support accurate diagnostics, condition monitoring, calibration, and maintenance applications. - Expert Health & Safety Training:
We provide professional health and safety training programmes designed to help your workforce stay compliant and confident on the job. - Fast, Reliable Delivery Worldwide:
Whether you’re in Texas United States or Perth Western Australia, our fast delivery service ensures you get your safety equipment quickly and efficiently. - Trusted by European Businesses:
We’re proud to support industries across Europe (UK) with certified safety solutions, expert advice, and responsive customer service.
We Ship Worldwide
At QTech Safety, we supply industrial sensors and instrumentation across Ireland, offering fast and reliable worldwide delivery. Through strong global logistics partnerships, we ensure efficient shipping and professional support for customers in Europe, North America, and Australia.
🡆 Europe (United Kingdom, Ireland, Germany, France, Italy, Spain, and the rest of European Union)
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