{"product_id":"analog-i-o-module-aab841-yokogawa","title":"Analog I\/O Module | AAB841 | Yokogawa","description":"\u003ch2\u003eYokogawa AAB841 Analog I\/O Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for signal conversion and loop execution in Yokogawa CENTUM series distributed control systems, the \u003cstrong\u003eYokogawa AAB841-S50\u003c\/strong\u003e (base model \u003cstrong\u003eAAB841\u003c\/strong\u003e Analog I\/O Module) provides direct electrical interfacing between field instrumentation and controller backplanes. It processes 1-5 V DC differential inputs and drives 4-20 mA outputs within a single slot footprint.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003eDefinition\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAAB841\u003c\/td\u003e\n\u003ctd\u003eBase Model: 8-channel input \/ 8-channel output, Non-isolated Differential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-S\u003c\/td\u003e\n\u003ctd\u003eStandard Type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eWithout explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003ctd\u003eBasic type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\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\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\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eSingle Slot Width (Standard DCS Rack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 55 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e310 mA @ 5 VDC, 250 mA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e1 to 5 V DC (Non-Isolated Differential)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance\u003c\/td\u003e\n\u003ctd\u003ePower ON: \u0026gt;= 1 MΩ\u003cbr\u003ePower OFF: \u0026gt;= 340 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Voltage\u003c\/td\u003e\n\u003ctd\u003e+\/- 7.5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Common Mode Voltage\u003c\/td\u003e\n\u003ctd\u003e+\/- 1 V DC or less\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003eInput: +\/- 4 mV\u003cbr\u003eOutput: +\/- 48 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\u003eStep Response Time\u003c\/td\u003e\n\u003ctd\u003eInput: 100 ms\u003cbr\u003eOutput: 40 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003e+\/- 0.1 % \/ 10 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Connection\u003c\/td\u003e\n\u003ctd\u003eDedicated KS Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHART Communication\u003c\/td\u003e\n\u003ctd\u003eAvailable on Current Input\/Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol Integration\u003c\/h3\u003e\n\u003cp\u003eThe module supports HART protocol communication superimposed on the 4-20 mA current loop. This allows simultaneous transmission of analog process variables and digital device status data over a single pair of wires. The module does not supply transmitter power; external loop power sourcing is mandatory. HART signal integrity requires a minimum loop impedance of 250 ohms for proper modulation detection by the host system.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can this module be hot-swapped while the rack is powered?\u003c\/p\u003e\n\u003cp\u003eA: No. Due to the non-isolated nature of the input channels and the requirement to prevent transient backplane surges, power must be removed from the node before insertion or removal.\u003c\/p\u003e\n\u003cp\u003eQ: What is the impact of common mode voltage exceeding +\/- 1 V DC?\u003c\/p\u003e\n\u003cp\u003eA: Exceeding the allowable common mode voltage range will result in input signal clamping and potential damage to the internal A\/D conversion circuitry. Ensure field wiring reference grounds are within specified limits.\u003c\/p\u003e\n\u003cp\u003eQ: Is galvanic isolation provided between channels?\u003c\/p\u003e\n\u003cp\u003eA: No. The AAB841 is a non-isolated module. Channel-to-channel isolation is not present; all inputs share a common reference plane.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the module into the designated DCS I\/O slot ensuring the ejector levers fully seat the connector pins. Use only the specified KS cable for field termination. For HART-enabled loops, ensure shield drain wires are terminated at a single point to the cabinet ground bus to prevent ground loops. Verify that the external 24 VDC power supply for the current loops is stable and free of ripple before energizing the module. Do not exceed the maximum backplane current draw of 310 mA at 5 VDC.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44203030970456,"sku":"AAB841-S50","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/AAB841-S50-3.jpg?v=1780888522","url":"https:\/\/www.industriaxplc.com\/id\/products\/analog-i-o-module-aab841-yokogawa","provider":"IndustriaX Limited","version":"1.0","type":"link"}