{"product_id":"yokogawa-alu4-d-analog-input-module","title":"Yokogawa ALU4*D Analog Input Module","description":"\u003cp\u003eConfigured for high-speed signal conditioning and analog data collection in distributed control systems (DCS), the \u003cstrong\u003eYokogawa ALU4*D\u003c\/strong\u003e (\u003cstrong\u003eALU4*D\u003c\/strong\u003e Analog Input Module) provides direct physical\/electrical execution.\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\u003eALU4*D\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\u003e0.2 kg (0.44 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Yokogawa CENTUM CS 3000 \/ VP I\/O slot size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial cabinet environmental parameters apply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e310 mA at 5 V DC \/ 450 mA at 24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003eMulti-channel modular analog input configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003ePlus\/minus 16 uA, plus\/minus 4 mV, plus\/minus 20 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Update Period\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Response Time\u003c\/td\u003e\n\u003ctd\u003e100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Power Supply\u003c\/td\u003e\n\u003ctd\u003e14.8 VDC or higher (at 20 mA), 26.4 VDC or less (at 0 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003ePlus\/minus 16 uA\/10 deg C, plus\/minus 4 mV\/10 deg C, plus\/minus 20 mV\/10 deg C, plus\/minus 0.1 percent\/10 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control System Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART Loop Protocol Network Arbitration\u003c\/strong\u003e The analog circuitry interfaces with external field transmitters to process incoming process variables like temperature, pressure, and flow. The module handles signal conditioning by filtering and amplifying raw electrical signals before converting them into synchronized digital values for communication bus transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-to-Channel Isolation Performance\u003c\/strong\u003e Ground loops and common-mode noise are suppressed via built-in physical isolation barriers. This design prevents field-side electrical anomalies or localized wire shorts from migrating to adjacent measurement paths or disrupting internal analog-to-digital converter sub-components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module react if the transmitter power supply voltage drops below the 14.8 VDC threshold at 20 mA?\u003c\/p\u003e\n\u003cp\u003eA: A voltage drop below operational thresholds prevents proper loop excitation for 2-wire transmitters. The module detects the resulting loop current collapse, tags the associated register data as invalid inside the database, and flags an I\/O channel error on the system diagnostics.\u003c\/p\u003e\n\u003cp\u003eQ: Is the ALU4*D module hot-swappable while the DCS I\/O node carrier is fully energized?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The hardware includes staged backplane connection pins that manage transient inrush currents. The electronic unit can be removed or inserted under power without interrupting communication on adjacent I\/O cards or tripping active process control loops.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":47621296455870,"sku":"ALU4*D","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-06-11_15-14-49_7710a457-d89f-463b-bc1c-4a4e72474347.png?v=1781164540","url":"https:\/\/www.autooiltech.com\/products\/yokogawa-alu4-d-analog-input-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}