{"product_id":"sai143-s03-k4a00-yokogawa-analog-input-module-prosafe-rs-sis","title":"SAI143-S03\/K4A00 Yokogawa Analog Input Module | ProSafe-RS SIS","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa SAI143-S03\/K4A00\u003c\/strong\u003e is a specialized high-precision Analog Input Module engineered for integration into the \u003cstrong\u003eProSafe-RS\u003c\/strong\u003e safety instrumented system (SIS). It is designed to reliably acquire and digitize analog signals from field transmitters, ensuring the strict data integrity required for safety-critical process control.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSAI143-S03\/K4A00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e16 Isolated Input Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e4–20 mA (Permissible: 0–25 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Accuracy\u003c\/td\u003e\n\u003ctd\u003e±16 μA (for 1–23 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Frequency\u003c\/td\u003e\n\u003ctd\u003e40 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstand Voltage\u003c\/td\u003e\n\u003ctd\u003e1.5 kV AC (Input to System)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003e±16 μA \/ 10°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSafety-Critical Architecture and Signal Isolation\u003c\/h3\u003e\n\u003cp\u003eThe SAI143-S03\/K4A00 module provides galvanic isolation of 1.5 kV AC between field-side inputs and the internal system bus. This isolation is vital in SIS environments to prevent common-mode noise and protect against transient voltage surges that could otherwise jeopardize logic integrity. The module also features a robust transmitter power supply, capable of delivering between 16.15 V (at 20 mA) and 26.4 V (at 0 mA), ensuring that field instruments remain operational even under load.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the significance of the K4A00 suffix code?\u003c\/p\u003e\n\u003cp\u003eA: The K4A00 suffix typically denotes a specific configuration of terminal interface compatibility and\/or environmental coating options optimized for integration with Yokogawa's standardized wiring accessories in ProSafe-RS cabinets.\u003c\/p\u003e\n\u003cp\u003eQ: How should I handle the input impedance change during power-off?\u003c\/p\u003e\n\u003cp\u003eA: The high input impedance ($\\ge 500 \\text{ k}\\Omega$) when powered off is a safety design feature. It prevents the module from drawing current from field loops during maintenance. Ensure that diagnostic systems do not flag this impedance change as an open-circuit fault if you are performing hot-swap maintenance.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Interface:\u003c\/strong\u003e The module supports flexible connection methods, including pressure clamp terminals, MIL cables, or dedicated signal cables. Ensure the chosen method matches the system design documentation to avoid connectivity issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Seating:\u003c\/strong\u003e Given the 0.3 kg weight and safety-critical nature, ensure the module is fully seated on the backplane. Use the locking tabs to prevent mechanical vibration from causing intermittent signal loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Management:\u003c\/strong\u003e While the module is robust, the temperature drift of $\\pm 16 \\text{ }\\mu\\text{A}\/10^\\circ\\text{C}$ means that maintaining stable ambient cabinet temperatures is essential for high-precision safety logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Protection:\u003c\/strong\u003e Use shielded twisted-pair cabling and ground the shields at the cabinet entry to minimize the influence of electromagnetic interference on the sensitive 4–20 mA loops.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49203575816444,"sku":"SAI143-S03\/K4A00","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/SAI143-H03.jpg?v=1772783917","url":"https:\/\/www.electronicplc.com\/ar\/products\/sai143-s03-k4a00-yokogawa-analog-input-module-prosafe-rs-sis","provider":"Electronic PLC","version":"1.0","type":"link"}