{"product_id":"yokogawa-aai143-s50-k4s00-analog-input-module","title":"Yokogawa AAI143-S50\/K4S00 Analog Input Module","description":"\u003cp\u003eThe Yokogawa AAI143-S50\/K4S00 is a 16-channel isolated analog input module designed to receive 4-20 mA signals from field transmitters. It supports channel-level selection of 2-wire or 4-wire transmitter configurations, with built-in transmitter power supply and HART communication capability. Its 10 ms data update period supports regular acquisition of process signals for control system monitoring.\u003c\/p\u003e\n\u003ch3\u003eInput Channels and Signal Processing\u003c\/h3\u003e\n\u003cp\u003eThe module provides 16 electrically isolated input channels, each accepting a 4-20 mA current signal. The allowable input current is 24 mA, while the input accuracy is specified as +\/-16 uA.\u003c\/p\u003e\n\u003cp\u003eThe 10 ms data update period defines the interval for refreshing acquired input data. This parameter is relevant when assessing the module's signal acquisition characteristics within a control system.\u003c\/p\u003e\n\u003ch3\u003eTransmitter Connection and Power Supply\u003c\/h3\u003e\n\u003cp\u003eEach channel can be configured for a 2-wire or 4-wire transmitter using a setting pin. This allows the input configuration to be selected according to the connected field instrument's wiring arrangement.\u003c\/p\u003e\n\u003cp\u003eFor 2-wire transmitter applications, the module provides a transmitter power supply with an output current limit of 25 mA. The specified voltage is at least 19.0 V at 20 mA and no more than 25.5 V at 0 mA. These conditions should be considered when checking transmitter voltage requirements and loop loading.\u003c\/p\u003e\n\u003ch3\u003eElectrical Isolation and Input Resistance\u003c\/h3\u003e\n\u003cp\u003eThe module withstands 1500 V AC for 1 minute between the input circuit and the system. This isolation specification defines the tested withstand condition between these circuit sections.\u003c\/p\u003e\n\u003cp\u003eInput resistance depends on the module's power state and input current. With power ON, it ranges from 270 ohms at 20 mA to 350 ohms at 4 mA. With power OFF, the input resistance is 500 kohms or greater.\u003c\/p\u003e\n\u003ch3\u003eHART Communication and External Connections\u003c\/h3\u003e\n\u003cp\u003eHART communication is supported, allowing compatible field devices to exchange digital communication over the analog current loop. The module's 4-20 mA input function remains the basis for process signal acquisition.\u003c\/p\u003e\n\u003cp\u003eExternal connections are available through pressure clamp terminals, MIL connector cables, or the dedicated KS1 cable. The selected connection arrangement should match the installed terminal and cabling configuration.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eAAI143-S50\/K4S00\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Input Channels\u003c\/td\u003e\n\u003ctd\u003e16, isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Current\u003c\/td\u003e\n\u003ctd\u003e24 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-16 uA\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\u003eInput Resistance (Power ON)\u003c\/td\u003e\n\u003ctd\u003e270 ohms at 20 mA; 350 ohms at 4 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance (Power OFF)\u003c\/td\u003e\n\u003ctd\u003e500 kohms or greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 V AC, 1 minute, input-to-system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Power Supply\u003c\/td\u003e\n\u003ctd\u003eAt least 19.0 V at 20 mA; maximum 25.5 V at 0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Supply Current Limit\u003c\/td\u003e\n\u003ctd\u003e25 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Configuration\u003c\/td\u003e\n\u003ctd\u003e2-wire or 4-wire, selectable per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHART Communication\u003c\/td\u003e\n\u003ctd\u003eAvailable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Temperature Drift\u003c\/td\u003e\n\u003ctd\u003e+\/-16 uA\/10 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current Consumption (5 V DC)\u003c\/td\u003e\n\u003ctd\u003e230 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current Consumption (24 V DC)\u003c\/td\u003e\n\u003ctd\u003e540 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Communication Connection\u003c\/td\u003e\n\u003ctd\u003ePressure clamp terminal, MIL connector cable, dedicated KS1 cable\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\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the AAI143-S50\/K4S00 connect to both 2-wire and 4-wire transmitters?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module supports both transmitter arrangements, with the configuration selected independently for each channel using a setting pin. The wiring and power supply arrangement must correspond to the connected transmitter.\u003c\/p\u003e\n\u003cp\u003eQ: Does this module support HART communication?\u003c\/p\u003e\n\u003cp\u003eA: Yes. HART communication is specified as available. The connected field device and loop configuration must also support HART communication.\u003c\/p\u003e\n\u003cp\u003eQ: What should be checked when replacing an existing AAI143 module?\u003c\/p\u003e\n\u003cp\u003eA: Verify the complete model designation, channel configuration, transmitter wiring, external connector type, and HART requirements. The specified 1500 V AC isolation withstand condition and transmitter supply limits should also be checked against the existing installation.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":69254185255154,"sku":"AAI143-S50\/K4S00","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/5589\/5794\/files\/AAI143-S50_K4S00.jpg?v=1794194841","url":"https:\/\/www.petrospare.com\/products\/yokogawa-aai143-s50-k4s00-analog-input-module","provider":"Petro Spare Industrial Limited","version":"1.0","type":"link"}