{"product_id":"1771-imd-allen-bradley-plc-5-digital-input-module","title":"1771-IMD Allen-Bradley PLC-5 Digital Input Module","description":"\u003ch2\u003eAllen-Bradley 1771-IMD Digital AC\/DC Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-IMD\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-IMD\u003c\/strong\u003e Digital AC\/DC Input Module, operates as a dedicated hardware component for discrete AC\/DC signal acquisition within PLC-5 1771 I\/O chassis platforms. It provides 16 input channels for 220 VAC\/DC field device monitoring with backplane communication through the PLC-5 rack interface.\u003c\/p\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1771-IMD\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDigital AC\/DC Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePLC-5 1771 I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Category\u003c\/td\u003e\n\u003ctd\u003e220 VAC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e184-250 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e166-230 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e250 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC Off-State Current\u003c\/td\u003e\n\u003ctd\u003e13.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax DC Off-State Current\u003c\/td\u003e\n\u003ctd\u003e0.25 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical AC Signal Delay (On)\u003c\/td\u003e\n\u003ctd\u003e15 +\/- 8 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical DC Signal Delay (On)\u003c\/td\u003e\n\u003ctd\u003e15 +\/- 8 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical AC Signal Delay (Off)\u003c\/td\u003e\n\u003ctd\u003e172 +\/- 56 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm\u003c\/td\u003e\n\u003ctd\u003e1771-WA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.29 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC-5 Digital Input Interface Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1771-IMD module provides discrete input processing for PLC-5 systems using the 1771 I\/O rack backplane. The module accepts high-voltage AC or DC field signals and converts input states into digital data for controller processing.\u003c\/p\u003e\n\u003cp\u003eThe module architecture follows Allen-Bradley PLC-5 I\/O density scaling methods, allowing integration of multiple digital input points within a single rack slot. The electrical interface provides channel isolation and input filtering for switching devices connected to the field terminals.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What field signal range does the 1771-IMD support?\u003cbr\u003eA: The module supports 220 VAC\/DC category signals, including 184-250 VAC and 166-230 VDC operating ranges.\u003c\/p\u003e\n\u003cp\u003eQ: What PLC system is compatible with the 1771-IMD?\u003cbr\u003eA: The 1771-IMD is designed for Allen-Bradley PLC-5 processors with 1771 I\/O chassis installations.\u003c\/p\u003e\n\u003cp\u003eQ: What is the backplane power requirement of the module?\u003cbr\u003eA: The module requires 250 mA from the 5 VDC PLC-5 backplane supply.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-IMD module in a compatible 1771 I\/O chassis slot and secure the module using the rack mounting mechanism. Connect field conductors through the specified 1771-WA wiring arm.\u003c\/p\u003e\n\u003cp\u003eRoute AC\/DC input wiring separately from low-level analog and communication cables to minimize electrical interference. Verify field voltage levels before energizing the input terminals.\u003c\/p\u003e\n\u003cp\u003eFollow PLC-5 grounding practices and maintain proper cabinet wiring separation between control circuits and power conductors. Confirm input channel LED status and controller data updates after installation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43681475461210,"sku":"1771-IMD","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-IMD2.jpg?v=1784532818","url":"https:\/\/www.plcmasters.com\/products\/1771-imd-allen-bradley-plc-5-digital-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}