{"product_id":"yokogawa-sai143-s53-a4s00-analog-input-module","title":"YOKOGAWA SAI143-S53\/A4S00 Analog Input Module","description":"\u003cp\u003eConfigured for high-density signal acquisition in SIS platforms, the \u003cstrong\u003eYOKOGAWA SAI143-S53\/A4S00\u003c\/strong\u003e (\u003cstrong\u003eSAI143-S53\/A4S00\u003c\/strong\u003e Analog Input Module) provides direct electrical current measurement and transmitter power distribution for industrial safety loops.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAI143-S53\u003c\/strong\u003e: Base model for 16-channel analog input with standard I\/O processing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\/A4S00\u003c\/strong\u003e: Specifies the specific terminal interface and electrical protection configuration for safety-rated applications.\u003c\/li\u003e\n\u003c\/ul\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-S53\/A4S00\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.39kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e4-20 mA (0-25 mA permissible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 16 uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Period\u003c\/td\u003e\n\u003ctd\u003e40 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSafety Instrumented System Signal Integrity\u003c\/h3\u003e\n\u003cp\u003eThe SAI143-S53\/A4S00 utilizes module-level galvanic isolation to ensure that signal faults in one loop do not propagate to the remaining channels, a critical requirement for high-availability SIS architectures. The input circuitry is designed to manage 4-20 mA HART loop protocol signals, providing the necessary DC bias to power two-wire transmitters while maintaining a 250 Ohm input impedance during active operation. This design facilitates precise measurement of process variables while ensuring robust electrical protection against transients common in large-scale industrial instrumentation networks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does this module support redundant SIS configurations?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the 16-channel architecture allows for integration into redundant SIS setups; however, external configuration and voting logic must be handled by the safety processor to ensure the required fail-safe state execution.\u003c\/p\u003e\n\u003cp\u003eQ: Why does the input impedance change from 250 Ohm to 500 kOhm when power is removed?\u003c\/p\u003e\n\u003cp\u003eA: The high impedance in the power-off state prevents the module from loading the signal loop when the internal electronics are inactive, preventing potential signal degradation in multi-dropped instrumentation circuits.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that the loop power supply voltage (16.15 V to 26.4 V) is correctly calibrated to the specific transmitter load to ensure the loop remains within the operational 4-20 mA range.\u003c\/li\u003e\n\u003cli\u003eUse shielded, twisted-pair cables for all field inputs; ensure shields are grounded at the junction box or cabinet entry point to minimize electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eEnsure that the total current draw does not exceed the capacity of the transmitter power supply, particularly when all 16 channels are active and powering transmitters simultaneously.\u003c\/li\u003e\n\u003cli\u003ePeriodically check for signal drift, particularly if the cabinet environment temperature fluctuates, noting that the drift coefficient is +\/- 16 uA per 10 deg C.\u003c\/li\u003e\n\u003cli\u003eSecure the terminal blocks firmly to the module header to ensure the integrity of the 16-channel signal path under vibration.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49262366884092,"sku":"SAI143-S53\/A4S00","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/SAI143-S53_S3.jpg?v=1783562205","url":"https:\/\/www.electronicplc.com\/ar\/products\/yokogawa-sai143-s53-a4s00-analog-input-module","provider":"Electronic PLC","version":"1.0","type":"link"}