{"product_id":"6es7431-7kf10-0ab0-siemens-rtd-temperature-input-module","title":"6ES7431-7KF10-0AB0 Siemens RTD Temperature Input Module","description":"\u003ch2\u003eSpecialized Temperature \u0026amp; Resistance Input Module with Diagnostics\u003c\/h2\u003e\n\u003cp\u003eDirectly connect temperature sensors to your S7-400 PLC with this \u003cstrong\u003ehigh-precision 8-channel analog input module\u003c\/strong\u003e. The Siemens 6ES7431-7KF10-0AB0 is engineered for \u003cstrong\u003eRTDs (like PT100) and resistance measurement\u003c\/strong\u003e. It features \u003cstrong\u003e16-bit resolution\u003c\/strong\u003e, built-in linearization, and advanced diagnostic alarms for reliable process monitoring.\u003c\/p\u003e\n\u003ch3\u003eCore Advantages for Your Application\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong style=\"color: #16a085;\"\u003eDirect Sensor Connection:\u003c\/strong\u003e Plug in PT100, PT1000, NI100, NI1000 sensors directly—no external transmitter needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong style=\"color: #16a085;\"\u003eHigh Accuracy:\u003c\/strong\u003e Achieves ±0.2°C precision at room temperature for superior temperature control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong style=\"color: #16a085;\"\u003eSmart Diagnostics:\u003c\/strong\u003e Detects wire breaks, sensor faults, and limit breaches, sending immediate alarms to the PLC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong style=\"color: #16a085;\"\u003eBuilt-in Linearization:\u003c\/strong\u003e Automatically converts sensor resistance to accurate temperature readings using standard curves.\u003c\/p\u003e\n\u003ch3\u003eComplete Technical Data\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Siemens\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSystem:\u003c\/strong\u003e SIMATIC S7-400\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModule Designation:\u003c\/strong\u003e Analog Input SM 431\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFull Model Number:\u003c\/strong\u003e 6ES7431-7KF10-0AB0\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Channels:\u003c\/strong\u003e 8, electrically isolated from the PLC bus.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSignal Specialization:\u003c\/strong\u003e Resistance Thermometers (RTDs) and Resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupported Sensor Types:\u003c\/strong\u003e Pt100, Pt200, Pt500, Pt1000, Ni100, Ni1000.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurement Resolution:\u003c\/strong\u003e 16 bits (high-detail measurement).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Conversion Time:\u003c\/strong\u003e 20 ms per module (with 50 Hz suppression).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature Accuracy:\u003c\/strong\u003e Basic: ±0.2°C. Operational: ±1.0°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWiring Options:\u003c\/strong\u003e 3-wire or 4-wire connection for best accuracy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNoise Suppression:\u003c\/strong\u003e Selectable 50 Hz, 60 Hz, or off.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostic Functions:\u003c\/strong\u003e Wire break, short circuit, limit value alarm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMax Cable Length:\u003c\/strong\u003e 200 meters (shielded).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePLC Bus Power:\u003c\/strong\u003e 5V DC, max. 650 mA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModule Dimensions:\u003c\/strong\u003e 25 mm x 290 mm x 210 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e Approximately 650 grams.\u003c\/p\u003e\n\u003ch3\u003eInstallation \u0026amp; Configuration Guide\u003c\/h3\u003e\n\u003cp\u003eMount the module in your S7-400 rack. For optimal accuracy with RTDs, always use \u003cstrong\u003e3-wire or 4-wire connection\u003c\/strong\u003e to eliminate lead resistance errors. Use shielded cables and ground the shield at the module. In the PLC configuration software (like STEP 7), you must select the correct sensor type (e.g., PT100 standard) and enable desired diagnostics (like wire break monitoring) for each channel.\u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Shipping Details\u003c\/h3\u003e\n\u003cp\u003eYour purchase is protected by a comprehensive \u003cstrong style=\"color: #27ae60;\"\u003e12-month warranty\u003c\/strong\u003e. We ship globally using reliable carriers: \u003cstrong\u003eFedEx, UPS, and DHL\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eExpert FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this module measure voltage or current signals like 4-20mA?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, this is a specialized module. It only measures resistance and resistance-based temperature sensors (RTDs). For 4-20mA, you need a standard analog input module.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of a 4-wire over a 3-wire connection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: A 4-wire connection provides the highest accuracy because it completely compensates for the resistance of the leads connecting the sensor. Use it for critical measurements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the wire break diagnostics work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The module sends a small constant current through the sensor. If the circuit is open (wire break), the measured resistance becomes infinitely high, triggering a configurable diagnostic alarm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does \"linearization\" mean in this context?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: RTD resistance changes with temperature in a non-linear way. The module's firmware contains mathematical curves that automatically convert the measured resistance into an accurate, linear temperature value for your PLC program.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is external power required for the sensors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. The module itself provides the precise constant current source needed to excite the RTD sensors. No external power supply is required for the measurement circuit.\u003c\/p\u003e\n\u003cp\u003e© 2026 Ubest Automation Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.ubestplc.com\/\"\u003ehttps:\/\/www.ubestplc.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@ubestplc.com\"\u003esales@ubestplc.com\u003c\/a\u003e | Phone: \u003ca href=\"https:\/\/wa.me\/8618030005825\"\u003e+86 180 3000 5825\u003c\/a\u003e\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":51494356025626,"sku":"6ES7431-7KF10-0AB0","price":169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/6240\/4634\/files\/6ES7431-7KF10-0AB0.jpg?v=1789876239","url":"https:\/\/www.ubestplc.com\/products\/6es7431-7kf10-0ab0-siemens-rtd-temperature-input-module","provider":"Ubest Automation Limited","version":"1.0","type":"link"}