{"product_id":"allen-bradley-1746-nio4i-slc-500-combination-analog-i-o-module","title":"Allen-Bradley 1746-NIO4I SLC 500 Combination Analog I\/O Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1746-NIO4I\u003c\/strong\u003e is a 4-channel combination analog input and output module designed for use with SLC 500 programmable logic controllers. The module integrates two differential analog input channels and two analog current output channels into a single-slot architecture to lower system cost and reduce chassis size. Each input channel can be individually configured for voltage (-10 to +10V dc) or current (-20 to +20 mA) signal operation via circuit board DIP switches. Inputs feature 16-bit resolution with low-pass digital filtering (10 Hz at 3 dB) for electrical noise immunity. Outputs provide 14-bit converter resolution across a 0 to 21 mA range. Backplane isolation protects control electronics from field-side electrical interference.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Combination Architecture:\u003c\/strong\u003e Integrates 2 analog inputs and 2 analog current outputs within a single-slot 1746 chassis layout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Signal Resolution:\u003c\/strong\u003e Features 16-bit input A\/D conversion and 14-bit output D\/A conversion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigurable Input Signals:\u003c\/strong\u003e DIP switches on the circuit board permit channel-by-channel selection between voltage (-10 to +10V dc) and current (-20 to +20 mA) inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Immunity:\u003c\/strong\u003e Low-pass filtering (10 Hz at 3 dB) delivers 105 dB common-mode rejection at 60 Hz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemovable Terminal Block:\u003c\/strong\u003e Includes a 1746-RT28 terminal block to allow module replacement without disconnecting field wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Data Updates:\u003c\/strong\u003e Executes end-of-scan I\/O updates automatically without requiring specialized ladder program commands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Isolation:\u003c\/strong\u003e Features backplane-to-field isolation rated for 500V dc continuous.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProcess variable monitoring and loop control (e.g., flow, pressure, temperature transmitters).\u003c\/li\u003e\n\u003cli\u003eActuator and control valve positioning using 0 to 20 mA or 4 to 20 mA current loops.\u003c\/li\u003e\n\u003cli\u003eDistributed industrial automation within SLC 500 PLC chassis installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical 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\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCatalog Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1746-NIO4I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProgrammable Logic Controller I\/O Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingapore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current (5V dc)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current (24V dc)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e145 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 differential channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 analog current channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Signal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10 to +10V dc -1 LSB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Signal Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 to +20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500K ohms (to ANL COM) \/ 250 ohms (current mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput A\/D Converter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Resolution (Current)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.22070 uA\/LSB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Resolution (Voltage)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e305.176 uV\/LSB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Filter Bandwidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Hz at 3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommon Mode Rejection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e105 dB at 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Signal Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 21 mA -1 LSB (normal 0-20 mA \/ 4-20 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput D\/A Converter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.56348 uA\/LSB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Load Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 500 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStep Response (Input)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStep Response (Output)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 ms (5 to 95%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16-bit two's complement binary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500V dc continuous (field wiring to backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Wire Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e#14 AWG maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal Block Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRemovable (1746-RT28)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 degC to +60 degC (+32 degF to +140 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 degC to +85 degC (-40 degF to +185 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 to 95% (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eTerminal Pin\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInput Channel 0 Positive (IN 0+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInput Channel 0 Negative (IN 0-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Common (ANL COM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e4\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInput Channel 1 Positive (IN 1+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInput Channel 1 Negative (IN 1-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e6\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Common (ANL COM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e7\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOutput Channel 0 (OUT 0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e8\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Common (ANL COM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e9\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Used\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e10\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOutput Channel 1 (OUT 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e11\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Common (ANL COM)\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 Safety:\u003c\/strong\u003e Disconnect backplane power to the SLC 500 chassis and field devices before installing or wiring the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Placement:\u003c\/strong\u003e Insert the module into any available I\/O slot in a 1746 chassis, except slot 0 (reserved for the CPU).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput DIP Switch Setup:\u003c\/strong\u003e Set internal DIP switches S1 and S2 to CLOSED for current inputs or OPEN for voltage inputs prior to installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Selection \u0026amp; Shielding:\u003c\/strong\u003e Use Belden 8761 shielded twisted-pair cable. Connect the cable shield drain wire to earth ground at one end only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Routing:\u003c\/strong\u003e Keep analog signal wiring isolated from high-voltage power cables and inductive loads to mitigate noise interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Screw Torque:\u003c\/strong\u003e Fasten terminal screws to a torque rating between 0.7 and 0.9 Nm (6 to 8 in-lbs) to avoid stripping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnused Channels:\u003c\/strong\u003e Jumper unused input channels to ANL COM to prevent signal floating. Do not jumper unused current output terminals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUL 508 Listed\u003c\/li\u003e\n\u003cli\u003eCSA 22.2 No. 142 Approved (Class I Division 2 Hazardous Location)\u003c\/li\u003e\n\u003cli\u003eCE Compliant (for applicable directives)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695180509547,"sku":"1746-NIO4I","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1746-nio4i-high-resolution-analog-input-output-module-h22nsuewo1c_fd92a1d1-2fc8-4758-a6a2-3bb41ae801b3.jpg?v=1766114268","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1746-nio4i-slc-500-combination-analog-i-o-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}