{"product_id":"1746-no4i-allen-bradley-slc-500-analog-current-output-module","title":"1746-NO4I | Allen-Bradley SLC 500 Analog Current Output Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1746-NO4I\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides high-precision analog control for SLC 500 programmable controller systems. This module features four (4) high-resolution current output channels designed to drive proportional valves, motor speed controllers, and other actuators requiring a 0 to 20 mA signal. By converting digital processor data into stable analog currents, it enables the SLC 500 to manage complex PID loops and modulating processes. We supply this unit in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econdition, ensuring factory-calibrated accuracy for your mission-critical automation loops.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel \/ Part Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1746-NO4I\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAnalog Current Output\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 Channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Current Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to +20 mA (Full scale: 21 mA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e14 bits\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eUpdate Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e512 microseconds\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eStep Response\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.5 milliseconds\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e55 mA @ 5V DC \/ 195 mA @ 24V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Output Coding\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to +32764\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 60°C (32 to 140°F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOverrange Capability\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5% (up to 21 mA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe 1746-NO4I optimizes process control performance through several advanced technical features:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Signal Processing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA 512-microsecond update time paired with a 2.5-millisecond step response ensures the module reacts almost instantaneously to processor commands. This speed proves essential for high-frequency pressure or flow control applications where lag causes system instability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e14-Bit Precision Control:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe high-resolution 14-bit converter divides the output range into 32,764 discrete steps. This granularity allows for ultra-fine adjustments to valve positions or drive speeds, significantly improving final product consistency in chemical and food processing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Signal Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEach channel features electrical isolation to prevent ground loop interference. This architecture protects the SLC 500 backplane from field transients and noise, ensuring that electrical interference at the actuator does not corrupt the controller's logic or damage internal circuitry.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExtended Overrange Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module provides a 5% overrange capability, reaching up to 21 mA. This extra headroom ensures the controller can drive field devices to their absolute mechanical limits, compensating for slight resistive losses in long cable runs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLow Thermal Footprint:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDespite managing four analog loops, the module draws minimal backplane current. Efficient power management keeps heat dissipation low within the chassis, allowing for dense module packing without exceeding cabinet temperature ratings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1746-NO4I output a 4-20 mA signal?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes. While the hardware range is 0-20 mA, you define the 4-20 mA range through your PLC ladder logic scaling. By mapping your 4 mA setpoint to the corresponding digital value (approximately 6553), you achieve standard industrial 4-20 mA control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I verify the \"Brand New\" status of this module?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWe guarantee every 1746-NO4I arrives in its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoriginal Allen-Bradley factory box with intact security seals\u003c\/strong\u003e. Every unit carries a unique GTIN (10662073735912) and serial number for full manufacturer traceability, confirming the hardware has zero field runtime.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require an external power supply for the current loops?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1746-NO4I draws its loop power directly from the SLC 500 backplane (195 mA @ 24V DC). You must ensure your chassis power supply (e.g., 1746-P1, P2, or P4) has sufficient 24V capacity to support all analog modules in the rack.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the recommended maintenance for analog accuracy?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBecause we provide these units as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBrand New Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estock, they carry the factory calibration. To maintain this accuracy, ensure your field wiring utilizes shielded twisted-pair cables and keep the ambient operating temperature between 0 and 60°C to prevent thermal drift.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53201010098360,"sku":"1746-NO4I","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1746-NO4I.jpg?v=1774948983","url":"https:\/\/www.globalpetroparts.com\/products\/1746-no4i-allen-bradley-slc-500-analog-current-output-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}