{"product_id":"allen-bradley-1771-ofe2-plc-5-analog-output-module","title":"Allen-Bradley 1771-OFE2 PLC-5 Analog Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-OFE2\u003c\/strong\u003e (Series A and B) is an intelligent, single-slot analog output module designed for the PLC-5 \/ 1771 I\/O chassis system. It features four (4) individually isolated differential current channels delivering a factory-set 4 to 20 mA output signal. The module converts digital data—supplied via binary, 2's complement binary, or 4-digit binary coded decimal (BCD)—into proportional analog output signals. It can automatically convert raw process values into standard engineering units such as degrees Celsius, degrees Fahrenheit, gallons per minute, or pounds per square inch.\u003c\/p\u003e\n\u003cp\u003eThe 1771-OFE2 is widely used to control Final Control Elements (FCE) like Variable Frequency Drives (VFDs), dampers, louvers, and control valves. It is also ideal for executing PID controller outputs in closed loops or retransmitting process variables to signal isolators, panel meters, chart recorders, and data loggers. Powered directly from the I\/O backplane, it requires no external power supply and supports block transfer programming (BTW\/BTR) for configuration and diagnostic reporting.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 Isolated Channels:\u003c\/strong\u003e Features 4 individually isolated differential current outputs (1000V DC \/ 1500V optoelectronic isolation).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Output Range:\u003c\/strong\u003e Factory-set 4 to 20 mA DC range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Data Formats:\u003c\/strong\u003e Supports 12-bit natural binary, BCD, or 2's complement binary, with scaling up to ±9999.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn-Board Engineering Units:\u003c\/strong\u003e Converts raw data directly into units like °C, °F, GPM, or PSI.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Powered:\u003c\/strong\u003e Operates solely on 1.5A @ 5V DC chassis backplane power; no external supply needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response:\u003c\/strong\u003e DAC settling time is a maximum of 0.8 ms, with fast channel scan update times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFail-Safe Modes:\u003c\/strong\u003e Configurable Last State output mode (MAX, MIN, MID, or HOLD LAST STATE) on communication failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic LEDs:\u003c\/strong\u003e Front-panel green RUN and red FAULT LEDs with built-in startup self-diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDriving variable frequency motor speed controllers (VFDs)\u003c\/li\u003e\n\u003cli\u003ePosition control for valves, dampers, and louvers\u003c\/li\u003e\n\u003cli\u003eAutomated PID control loop output execution\u003c\/li\u003e\n\u003cli\u003eSignal retransmission to panel meters, chart recorders, and data loggers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable style=\"width: 99.9009%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 35.118%;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 64.5582%;\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eCatalog \/ Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e1771-OFE2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003ePLC-5 \/ 1771 Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e612598003075\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eIndividually Isolated Analog Current Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eModule Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eSingle slot (Rack Mountable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eNumber of Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e4 isolated differential channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eOutput Current Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e4 to 20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eDigital Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e12-bit binary (1 part in 4095)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eMax Loop Load Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eUp to 1200 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eDAC Settling Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eMaximum 0.8 ms (resistive load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eInternal Scan Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e\n\u003cp\u003e8.0 ms (4 channels BCD with scaling)\u003c\/p\u003e\n\u003cp\u003e1.6 ms (4 channels Natural Binary, no scaling)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e±0.1% Full Scale at 25°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eIsolation Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e\n\u003cp\u003e1000V RMS \/ 850V DC (1s) channel-to-channel\u003c\/p\u003e\n\u003cp\u003e1500V optoelectronic isolation logic-to-output\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eBackplane Current Load\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e1.50 A @ 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eExternal Power Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eNone (Backplane powered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e7.9 W max (Adjacent slot max dissipation: 10 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e26.9 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e1.25 lbs (0.57 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e0°C to +60°C (32°F to 140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eKeying Position\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eBetween pins 10 and 12; Between pins 26 and 28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eField Wiring Arm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eCat. No. 1771-WC (or 1771-WH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eWiring Arm Screw Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e7 to 9 inch-pounds (0.6 to 1.1 Nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eRecommended Wire \/ Cable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e12 AWG stranded or solid wire; Belden 8761 shielded cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eStatus Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003e2 LEDs (Green RUN, Red FAULT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35.118%;\"\u003e\u003cstrong\u003eKnown Revisions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5582%;\"\u003eSeries A (1771-OFE2\/A), Series B (1771-OFE2\/B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eField Wiring Arm Connections (1771-WC)\u003c\/h3\u003e\n\u003cp\u003eThe 1771-WC wiring arm allows the module to be swapped without disconnecting the field wiring.\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eTerminal Screw\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSignal Function\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 1 Output (+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 1 Output (-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 2 Output (+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 4\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 2 Output (-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 5\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFunctional Ground \/ Shield\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 6\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 3 Output (+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 7\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 3 Output (-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 8\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 4 Output (+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew 9\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 4 Output (-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrews 10 – 12\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Used\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Precaution:\u003c\/strong\u003e Always disconnect and lock out backplane and field wiring power before inserting, removing, or wiring the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Keying:\u003c\/strong\u003e Install backplane keying bands between pins 10 and 12, and between pins 26 and 28 on the upper connector to ensure correct module orientation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Location:\u003c\/strong\u003e The module can be installed in any single slot of a 1771 I\/O chassis. Avoid placing it in the same module group as discrete high-density modules or directly adjacent to AC or high-voltage DC modules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring and Shielding:\u003c\/strong\u003e Use Belden 8761 shielded single-pair cable for signal lines. Extend the foil shield and drain wire to the chassis end only and connect to a single-point ground bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Wiring Arm:\u003c\/strong\u003e Attach the \u003ca href=\"https:\/\/www.plcprotech.com\/products\/allen-bradley-1771-wc-1771-i-o-field-wiring-arm\"\u003e\u003cstrong\u003e1771-WC\u003c\/strong\u003e \u003c\/a\u003ewiring arm to the chassis horizontal bar. Tighten terminal screws to a torque of 7-9 lb-in (0.6-1.1 Nm).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCSA certified (Class I, Division 2, Groups A, B, C, D hazardous or non-hazardous locations)\u003c\/li\u003e\n\u003cli\u003eUL listed (Class I, Division 2, Groups A, B, C, D hazardous or non-hazardous locations)\u003c\/li\u003e\n\u003cli\u003eCE marked (EMC Directive 89\/336\/EEC per EN 50081-2 \u0026amp; EN 50082-2; Low Voltage Directive 73\/23\/EEC per EN 61131-2)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53685721497963,"sku":"1771-OFE2","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1771-ofe2_002_1200x1200_4762b4a7-fb06-4af2-ba5b-70194a7e6b34.jpg?v=1786191514","url":"https:\/\/www.plcprotech.com\/it\/products\/allen-bradley-1771-ofe2-plc-5-analog-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}