{"product_id":"allen-bradley-1746-iv16-slc-500-discrete-input-module","title":"Allen-Bradley 1746-IV16 SLC 500 Discrete Input Module","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1746-IV16 is a robust SLC 500 discrete input module engineered for industrial control systems. With its 16 sourcing input channels, this module interfaces seamlessly with switches, auxiliary contacts, sensors, and other binary signaling devices. The 1746-IV16 accepts a nominal input voltage of 24VDC and operates across a wide 10-30VDC range, ensuring flexibility in diverse plant environments.\u003c\/p\u003e\u003cp\u003eAs a single-slot module, the 1746-IV16 installs directly into any 1746 chassis, serving as either a local or remote I\/O module. It features 16 LED status indicators for quick diagnostics and a removable terminal block that simplifies wiring and replacement. This module is a dependable choice for general-purpose DC input applications within SLC 500 systems.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe table below outlines the key electrical and performance parameters of the Allen-Bradley 1746-IV16, sourced directly from the manufacturer's data.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDiscrete input module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number \/ Catalog No.\u003c\/td\u003e\n\u003ctd\u003e1746-IV16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e24VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10-30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Configuration\u003c\/td\u003e\n\u003ctd\u003eSource wiring configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Consumption\u003c\/td\u003e\n\u003ctd\u003e0.085 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay, Max. Resistive Load\u003c\/td\u003e\n\u003ctd\u003eOn = 0.3 ms; Off = 0.5 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-state Voltage, Max\u003c\/td\u003e\n\u003ctd\u003e5VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-state Current, Max\u003c\/td\u003e\n\u003ctd\u003e1.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Current\u003c\/td\u003e\n\u003ctd\u003e8 mA at 24VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e10 to 30 Volts DC Source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5 Volts DC)\u003c\/td\u003e\n\u003ctd\u003e85 milliamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay\u003c\/td\u003e\n\u003ctd\u003e8 milliseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff State Current\u003c\/td\u003e\n\u003ctd\u003e1 milliamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eCombination 120 Volts AC I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e10662468092750\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1746-IV16 excels in applications requiring reliable monitoring of discrete signals. In manufacturing, it interfaces with proximity sensors and limit switches to track machine positions and part presence. In material handling systems, the module reads signals from photo-eyes and conveyors, enabling precise sorting and routing. The 1746-IV16 also suits building automation for monitoring door contacts and alarm circuits.\u003c\/p\u003e\u003cp\u003eIts source wiring configuration proves advantageous when input devices do not supply their own voltage, as the module provides the signal voltage to the loop. This feature simplifies wiring and reduces external power requirements, making the 1746-IV16 a practical choice for retrofits and new installations alike.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eInstalling the Allen-Bradley 1746-IV16 is straightforward. First, ensure the SLC 500 chassis is powered down. Slide the module into any available slot until it seats firmly, then tighten the retaining screws. Connect field wiring to the removable terminal block, observing the source wiring configuration. Each input channel accepts 10-30VDC signals; verify polarity and voltage levels before energizing.\u003c\/p\u003e\u003cp\u003eAfter wiring, power up the system and monitor the LED indicators. Each LED corresponds to an input channel, illuminating when the channel is active. Use the module's input status in your ladder logic program to verify correct operation. The removable terminal block allows pre-wiring, reducing downtime during module swaps.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eRoutine maintenance for the 1746-IV16 is minimal. Periodically inspect the terminal block connections for tightness and signs of corrosion. Keep the module free from dust and debris to ensure proper airflow and heat dissipation. The operating environment should remain within 0 to 60°C (32 to 140°F) and 5 to 95% noncondensing relative humidity.\u003c\/p\u003e\u003cp\u003eThe module's optical coupling and filter circuitry reduce signal noise, enhancing reliability in industrial settings. With no moving parts, the 1746-IV16 offers long service life, minimizing downtime and maintenance costs. Regularly review input status via LED indicators to catch potential wiring issues early.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe 1746-IV16 integrates seamlessly with the SLC 500 family, including modular and fixed processors. It supports both local and remote I\/O configurations, and its input data is accessible via ladder logic programming. The module communicates over the backplane, requiring 85 mA at 5VDC. Its removable terminal block and 16 input channels make it compatible with a wide range of field devices.\u003c\/p\u003e\u003cp\u003eAs a standard SLC 500 module, the 1746-IV16 works with existing 1746 chassis and power supplies. No special cabling is needed beyond standard terminal wiring. This compatibility ensures easy integration into existing control panels.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eWhen selecting the Allen-Bradley 1746-IV16, verify your system's input voltage requirements and wiring configuration. Confirm that your SLC 500 chassis has an available slot and sufficient backplane power. If you are replacing an existing module, check the wiring diagram to ensure compatibility.\u003c\/p\u003e\u003cp\u003ePLC Source PRO offers the 1746-IV16 with genuine authenticity and competitive pricing. Our inventory supports rapid deployment, reducing your project lead times. Trust PLC Source PRO as your reliable partner for industrial automation spares.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44434694275171,"sku":"1746-IV16","price":279.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1746-A13_3__E5_89_AF_E6_9C_AC_9e72938b-32b4-4794-9ef5-30530fbf7567.jpg?v=1785768522","url":"https:\/\/www.plcsourcepro.com\/products\/allen-bradley-1746-iv16-slc-500-discrete-input-module","provider":"PLC Source PRO","version":"1.0","type":"link"}