{"id":5644,"date":"2026-03-26T15:28:03","date_gmt":"2026-03-26T07:28:03","guid":{"rendered":"https:\/\/atfits.com\/?post_type=product&p=5644"},"modified":"2026-03-26T15:28:03","modified_gmt":"2026-03-26T07:28:03","slug":"siemens-6es7-331-1kf02-0ab0-analog-input-sm-331-6es73311kf020ab0","status":"publish","type":"product","link":"https:\/\/atfits.com\/es\/producto\/siemens-6es7-331-1kf02-0ab0-analog-input-sm-331-6es73311kf020ab0\/","title":{"rendered":"Siemens 6ES7 331-1KF02-0AB0 Analog input SM 331 6ES73311KF020AB0"},"content":{"rendered":"

Siemens 6ES7 331-1KF02-0AB0 | SIMATIC S7-300 SM 331 Analog Input Module<\/h1>\n
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Product Overview<\/h2>\n
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The 6ES7 331-1KF02-0AB0<\/strong> (also known as 6ES73311KF020AB0<\/strong>) is a high-performance analog input module from the SIMATIC S7-300<\/strong> family, designed for reliable signal acquisition in industrial automation and process control systems. It features 8 isolated analog input channels<\/strong> with broad signal compatibility, supporting voltage, current, resistance, and resistance thermometer (RTD) measurements. With 13-bit resolution and galvanic isolation between channels and the backplane bus, it ensures high immunity to electromagnetic interference (EMI) and stable operation in harsh industrial environments. As a modular expansion component, it seamlessly integrates into S7-300 controllers via the backplane bus, enabling flexible system scaling for applications like manufacturing, energy management, and environmental monitoring.<\/div>\n
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Key Functions<\/h2>\n
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  • Multi-Signal Acquisition<\/strong>: Supports voltage (0\u201310 V, \u00b110 V, \u00b11 V, etc.), current (0\u201320 mA, 4\u201320 mA, etc.), resistance, and RTD signals (Pt100, Ni100, Ni1000, etc.), eliminating the need for separate modules for different signal types.<\/li>\n
  • High Accuracy & Resolution<\/strong>: Delivers 13-bit resolution (including sign) for precise measurements, with typical accuracy of \u00b10.1%\u2013\u00b10.2% for voltage\/current signals, ensuring reliable data for critical control tasks.<\/li>\n
  • Galvanic Isolation<\/strong>: Provides 500 V DC isolation between each input channel and the backplane bus, protecting the CPU and other modules from ground potential differences and noise in long-distance wiring.<\/li>\n
  • Configurable Parameters<\/strong>: Allows channel-specific setup of signal ranges, integration times (50\/60 ms), and measurement modes via STEP 7 software, with no hardware jumpers required for flexibility.<\/li>\n
  • Diagnostic Capabilities<\/strong>: Features built-in self-diagnostics to detect sensor breaks, range configuration errors, and overloads, with status indicators for quick troubleshooting.<\/li>\n
  • Efficient Data Conversion<\/strong>: Performs analog-to-digital conversion in approximately 66 ms per channel, balancing speed and noise immunity for industrial applications.<\/li>\n<\/ul>\n
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    Technical Features<\/h2>\n
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    Core Specifications<\/h3>\n
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    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Category<\/th>\nParameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
    Product Identity<\/strong><\/td>\nModule Type<\/td>\nSM 331 Analog Input<\/td>\n<\/tr>\n
    <\/td>\nSeries<\/td>\nSIMATIC S7-300<\/td>\n<\/tr>\n
    <\/td>\nPart Number<\/td>\n6ES7 331-1KF02-0AB0 \/ 6ES73311KF020AB0<\/td>\n<\/tr>\n
    Input Configuration<\/strong><\/td>\nNumber of Channels<\/td>\n8 (isolated)<\/td>\n<\/tr>\n
    <\/td>\nSupported Signals<\/td>\nVoltage, Current, Resistance, RTD (Pt100, Ni100, Ni1000, LG-Ni1000, PTC, KTY)<\/td>\n<\/tr>\n
    <\/td>\nInput Resistance (Voltage)<\/td>\n100 k\u03a9 (for 0\u201310 V, 1\u20135 V ranges)<\/td>\n<\/tr>\n
    <\/td>\nMax Permissible Input Voltage<\/td>\n30 V (destruction limit; 12 V continuous, 30 V for \u22641 s)<\/td>\n<\/tr>\n
    <\/td>\nMax Permissible Input Current<\/td>\n40 mA (destruction limit)<\/td>\n<\/tr>\n
    Performance<\/strong><\/td>\nResolution<\/td>\n13 bits (including sign)<\/td>\n<\/tr>\n
    <\/td>\nConversion Time<\/td>\n~66 ms<\/td>\n<\/tr>\n
    <\/td>\nIntegration Time<\/td>\nConfigurable (50 ms \/ 60 ms)<\/td>\n<\/tr>\n
    Power & Bus<\/strong><\/td>\nBackplane Bus Current<\/td>\n5 V DC, max 90 mA<\/td>\n<\/tr>\n
    <\/td>\nTypical Power Loss<\/td>\n0.4 W<\/td>\n<\/tr>\n
    <\/td>\nIsolation<\/td>\n500 V DC (channel to backplane bus)<\/td>\n<\/tr>\n
    Connection<\/strong><\/td>\nFront Connector<\/td>\n40-pole<\/td>\n<\/tr>\n
    Software<\/strong><\/td>\nProgramming<\/td>\nSTEP 7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    Environmental Specifications<\/h3>\n
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    Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
    Operating Temperature<\/strong><\/td>\n0 \u00b0C to +60 \u00b0C<\/td>\n<\/tr>\n
    Storage Temperature<\/strong><\/td>\n-40 \u00b0C to +85 \u00b0C<\/td>\n<\/tr>\n
    Relative Humidity<\/strong><\/td>\n5% to 95% (non-condensing)<\/td>\n<\/tr>\n
    Protection Rating<\/strong><\/td>\nIP20<\/td>\n<\/tr>\n
    Shock\/Vibration<\/strong><\/td>\nComplies with IEC 60068-2-6\/2-27<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    Physical Dimensions & Weight<\/h2>\n
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    Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
    Dimensions (W \u00d7 H \u00d7 D)<\/strong><\/td>\n40 mm \u00d7 125 mm \u00d7 117 mm (compact, space-saving for S7-300 racks)<\/td>\n<\/tr>\n
    Net Weight<\/strong><\/td>\nApprox. 250 g (lightweight for easy installation\/handling)<\/td>\n<\/tr>\n
    Mounting<\/strong><\/td>\nStandard 35 mm DIN rail (EN 60715 TS35), compatible with S7-300 central processing units (CPUs) and other modules<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Siemens 6ES7 331-1KF02-0AB0 | SIMATIC S7-300 SM 331 Analog Input Module Product Overview The 6ES7 331-1KF02-0AB0 (also known as 6ES73311KF020AB0)<\/p>","protected":false},"featured_media":5645,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[111],"product_tag":[],"class_list":{"0":"post-5644","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-siemens","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"\nSiemens 6ES7 331-1KF02-0AB0 Analog input SM 331 6ES73311KF020AB0 - Autofits<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atfits.com\/es\/producto\/siemens-6es7-331-1kf02-0ab0-analog-input-sm-331-6es73311kf020ab0\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Siemens 6ES7 331-1KF02-0AB0 Analog input SM 331 6ES73311KF020AB0 - 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