Detailed Description:
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Specialized Temperature Measurement: Designed specifically for temperature sensors, the module provides 4 analog input channels, each configurable independently for connecting Thermocouples (Types J， K， T， E， N， R， S， B， C) or 2/3/4-wire RTDs (Pt100， Pt200， Pt500， Pt1000， Ni100， etc.).
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Ultra-High Accuracy & Resolution: It offers high resolution of 16 bits (including sign) and is optimized and calibrated for temperature measurement, delivering outstanding measurement accuracy and repeatability, especially suitable for precision temperature control applications.
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Integrated Sensor Supply & Diagnostics: The module provides a constant current source for each RTD measurement and Cold Junction Compensation (CJC) for thermocouples. Integrated diagnostics such as wire break detection and limit alarm enhance system reliability and maintainability.
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Flexible Configuration & Ease of Use: Module configuration and channel parameterization (including sensor type, measuring range, filter time, etc.) can be easily completed using Siemens TIA Portal engineering software, greatly simplifying the commissioning process.
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Robust Industrial Design: Featuring the compact S7-1200 module design with high levels of electromagnetic compatibility (EMC) and electrical isolation, ensuring stable operation in harsh industrial environments.
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Integrated into Automation System: As an expansion module for the S7-1200 PLC, it can be seamlessly integrated into the automation system for centralized acquisition, processing, and control of temperature.
Key Specifications:
| Parameter | Details |
|---|---|
| Model | 6ES7 231-5QA30-0XB0 |
| Series | SIMATIC S7-1200 / SM 1231 AI |
| Module Type | Thermocouple/RTD Analog Input Module |
| Number of Input Channels | 4 channels (individually configurable) |
| Supported Sensors | Thermocouples: Types J, K, T, E, N, R, S, B, C; RTDs: 2/3/4-wire, Pt100, Pt200, Pt500, Pt1000, Ni100, LG-Ni1000, etc. |
| Measuring Principle | Selectable per channel: TC or RTD |
| Resolution | 16 bits (including sign) |
| Basic Accuracy (Full Scale) | Typical ±0.1% (RTD), ±0.3°C (TC, depending on type) |
| Measurement Cycle Time | All channels: 160 ms (configurable filtering) |
| Electrical Isolation | Isolated between channels and backplane bus |
| Sensor Supply (RTD) | Constant Current Source (Typ. 0.9 mA) |
| Cold Junction Compensation (TC) | Integrated internally |
| Maximum Wiring Length | 100 m (shielded twisted pair, compensation cable required for TC) |
| Power Consumption (Backplane Bus) | Typical 1.5 W |
| Dimensions (W x H x D) | 35 mm x 100 mm x 75 mm |
| Required Configuration Software | TIA Portal (STEP 7 Basic/Professional) |
