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Siemens 6ES7231-4HD32-0XB0 SIMATIC S7-1200 Analog Input SM 1231
The Siemens 6ES7231-4HD32-0XB0 is a SIMATIC S7-1200 SM 1231 analog input module with 4 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, 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 reliable analog signal acquisition in S7-1200 control systems.
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Categories: PLC I/O Modules
Description
The Siemens SIMATIC S7-1200 SM 1231 AI 4×13 bit provides four differential analog input channels 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. The module provides a maximum resolution of 12 bits plus sign, with voltage input impedance of at least 9 MΩ and current input impedance of 280 Ω. Siemens specifies a maximum cycle time of 625 µs for all channels.
The module uses an integrating measurement principle and supports parameterizable integration time, four levels of measured-value smoothing, and interference suppression of 40 dB for 50/60 Hz interference. It also includes supply-voltage monitoring, wire-break detection, diagnostic alarms, and input-status and maintenance LEDs, making it suitable for reliable analog signal acquisition in industrial automation systems.
QTech Safety is a leading supplier of Siemens 6ES7231-4HD32-0XB0 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 6ES7231-4HD32-0XB0 SIMATIC S7-1200 Analog Input SM 1231
- SIMATIC S7-1200 SM 1231 analog input module.
- Provides 4 differential analog input channels.
- Supports standard voltage and current signals.
- 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 parameterizable integration time.
- Provides four selectable measured-value smoothing levels.
- Offers 40 dB interference suppression for 50/60 Hz interference.
- Provides supply-voltage monitoring and wire-break diagnostics.
- Supports diagnostic alarms.
- Provides input-status and maintenance indication LEDs.
- Supports shielded cable lengths up to 100 m.
- Designed for IP20 industrial installations.
Technical Specifications of Siemens 6ES7231-4HD32-0XB0
- Product Type: SM 1231, AI 4×13 bit
- Number of Analog Inputs: 4
- 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
- Measurement Principle: Integrating
- Integration Time: Parameterizable
- Interference Suppression: 40 dB at 50/60 Hz
- Measured-Value Smoothing: None / low / medium / high
- 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
- Temperature Error: ±0.1% at 25°C; ±0.2% over specified temperature range
- Basic Error Limit, Voltage: ±0.1%
- Basic Error Limit, Current: ±0.1%
- Maximum Common-Mode Voltage: 12 V
- Diagnostic Functions: Yes
- Diagnostic Alarm: Yes
- Supply-Voltage Monitoring: Yes
- Wire-Break Detection: Yes
- Input-Status LED: Yes
- Maintenance LED: Yes
- Rated Supply Voltage: 24 V DC
- Typical Current Consumption: 45 mA
- Typical Backplane-Bus Current: 80 mA at 5 V DC
- Typical Power Loss: 1.5 W
- Cable Length: 100 m
- Degree of Protection: IP20
- Operating Temperature: −20°C to 60°C
- Vertical Installation Temperature: −20°C to 50°C
- Storage/Transport Temperature: −40°C to 70°C
- Relative Humidity: Up to 95% at 25°C without condensation
- Front Connector: Required
- Dimensions (W × H × D): 45 × 100 × 75 mm
- Weight: Approx. 180 g
- Product Family: SM 1231 analog input modules
Applications
The Siemens 6ES7231-4HD32-0XB0 SIMATIC S7-1200 Analog Input SM 1231 is commonly used in:
- Analog sensor monitoring in S7-1200 systems
- 0–20 mA and 4–20 mA transmitter measurement
- ±10 V industrial signal acquisition
- Process instrumentation and monitoring
- Machine automation and control panels
- General-purpose voltage and current measurement
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)
🡆 Australia (Western Australia WA, Queensland QLD, and New South Wales NSW)
🡆 North America (United States, Canada, Mexico)
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