{"product_id":"siemens-6es7331-1kf02-0ab0-analog-input-module","title":"Siemens 6ES7331-1KF02-0AB0 Analog Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-741 citation-end-741\"\u003eThe Siemens 6ES7331-1KF02-0AB0 is a versatile 8-channel Analog Input Module designed for the SIMATIC S7-300 PLC series.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eThis Signal Module (SM 331) facilitates the high-precision conversion of analog signals from the field into digital values for the controller.\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-740 citation-end-740\"\u003eEngineered to handle a variety of signal types including voltage and current, it provides a 13-bit resolution, ensuring granular data acquisition for process variables such as pressure, level, and flow.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"citation-739 citation-end-739\"\u003eDesigned for electromagnetic compatibility and industrial resilience, this module features a compact 40mm width that optimizes rail space.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eIt is a staple in automated water treatment, chemical processing, and HVAC control systems where multiple sensor inputs must be processed with high accuracy and galvanic isolation to protect the central processing unit.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Characteristics\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-738\"\u003e\u003c\/span\u003e\u003cstrong\u003eInput Channels:\u003c\/strong\u003e\u003cspan class=\"citation-738 citation-end-738\"\u003e\u003cspan\u003e \u003c\/span\u003e8 Analog Inputs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResolution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e13 Bits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Ranges:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e±10 V, 1 to 5 V, 0 to 10 V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-737\"\u003e\u003c\/span\u003e\u003cstrong\u003eCurrent Ranges:\u003c\/strong\u003e\u003cspan class=\"citation-737 citation-end-737\"\u003e\u003cspan\u003e \u003c\/span\u003e±20 mA, 0 to 20 mA, 4 to 20 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAccuracy:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eVoltage ±0.1%, Current ±0.2%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-736\"\u003e\u003c\/span\u003e\u003cstrong\u003eIsolation:\u003c\/strong\u003e\u003cspan class=\"citation-736 citation-end-736\"\u003e\u003cspan\u003e \u003c\/span\u003eGalvanic isolation between channels and backplane bus (Triple Isolation)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurement Principle:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrating conversion for superior noise suppression\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-20°C to +60°C operational\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConfigurable group fault indicators and status monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCalibration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated auto-calibration for long-term signal stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-735\"\u003e\u003c\/span\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan class=\"citation-735 citation-end-735\"\u003e\u003cspan\u003e \u003c\/span\u003e40mm (W) x 125mm (H) x 117mm (D)\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering and Safety Performance\u003c\/h3\u003e\n\u003cp\u003eThe 6ES7331-1KF02-0AB0 SM 331 utilizes a \"Triple Isolation\" architecture. By electronically separating the field inputs, internal logic, and the backplane communication bus, the module effectively eliminates ground loops and prevents high-voltage transients from damaging the PLC rack. This is particularly critical in large-scale plants with diverse grounding potentials.\u003c\/p\u003e\n\u003cp\u003eConfiguration is handled seamlessly within the STEP 7 or TIA Portal engineering environments, where users can define per-channel input delays and smoothing filters. The module’s high immunity to interference is bolstered by shielded terminal connections, making it the preferred choice for environments with heavy motor traffic or frequency converters. Its active product status ensures long-term availability and compatibility with the extensive S7-300 hardware ecosystem.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":45519032844461,"sku":"6ES7331-1KF02-0AB0","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/siemens-6es7331-1kf02-0ab0-analog-input-module-qgcoqvnjkvn.jpg?v=1766985326","url":"https:\/\/www.maxwellplc.com\/products\/siemens-6es7331-1kf02-0ab0-analog-input-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}