{"product_id":"alu4-d-yokogawa-modular-analog-input-i-o-system","title":"ALU4-D Yokogawa Modular Analog Input I\/O System","description":"\u003ch2\u003eYokogawa ALU4-D Modular I\/O System\u003c\/h2\u003e\n\u003cp\u003eConfigured for high-speed signal processing in CENTUM VP platforms, the \u003cstrong\u003eYokogawa ALU4-D\u003c\/strong\u003e (\u003cstrong\u003eALU4-D\u003c\/strong\u003e Modular Analog Input System) provides direct electrical execution of process variable acquisition and analog signal conditioning.\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e80 x 50 x 25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eIndustrial Standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e310 mA (5 VDC), 450 mA (24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem\u003c\/td\u003e\n\u003ctd\u003eCENTUM VP \/ CS 3000\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\u003c\/td\u003e\n\u003ctd\u003e100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eALU4-D\u003c\/strong\u003e operates as a central interface for field sensors, where it conditions signals from pressure, flow, and temperature transmitters. Yokogawa engineers integrate channel-to-channel isolation within the module architecture to suppress electromagnetic interference. This physical separation prevents common-mode voltage from corrupting analog measurements across the I\/O bus. Furthermore, the system employs advanced filtering to maintain measurement stability against ambient temperature fluctuations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the system handle transmitter power requirements?\u003c\/p\u003e\n\u003cp\u003eA: The module supplies 14.8 V to 26.4 V to 2-wire transmitters. You must configure the pin settings for either 2-wire or 4-wire loop topologies on a per-channel basis to ensure proper excitation.\u003c\/p\u003e\n\u003cp\u003eQ: Can operators perform module maintenance without system shutdown?\u003c\/p\u003e\n\u003cp\u003eA: The modular architecture permits the replacement of individual units. However, you must verify that the cabinet power remains stable during the extraction process to avoid communication resets on the backplane bus.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Secure the module onto the dedicated I\/O base unit. Ensure the pressure clamp terminals engage firmly to maintain contact integrity in high-vibration zones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Use shielded twisted-pair cabling for all analog inputs. Route these cables away from high-voltage AC feeders to minimize induced noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Connect the cable shields to the cabinet ground bus at a single point. This technique prevents ground loops, which introduce errors into 4-20 mA readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValidation:\u003c\/strong\u003e Check the loop current with a calibrated multimeter before connecting the field signals to the module terminals. Confirm that the input voltage falls within the defined operational range to prevent signal clipping.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43627163844698,"sku":"ALU4*D","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/431._f4a72721-5a80-4180-92fc-35e6322580ae.jpg?v=1783662521","url":"https:\/\/www.spareoil.com\/es\/products\/alu4-d-yokogawa-modular-analog-input-i-o-system","provider":"SpareOil Automation","version":"1.0","type":"link"}