{"product_id":"allen-bradley-1771-icd-plc-5-digital-dc-input-module","title":"Allen-Bradley 1771-ICD PLC-5 Digital DC Input Module","description":"\u003ch2\u003eAllen-Bradley 1771-ICD PLC-5 Digital DC Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for discrete DC signal acquisition in PLC-5 I\/O chassis systems, the \u003cstrong\u003eAllen-Bradley 1771-ICD\u003c\/strong\u003e (\u003cstrong\u003e1771-ICD\u003c\/strong\u003e Digital DC Input Module) provides direct physical\/electrical execution. The module processes 16 point DC input signals with 20-60 VDC operating voltage and communicates field states through the 1771 backplane 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-ICD\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.90 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane current: 250 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDigital DC Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003ePLC-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 input points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e20-60 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Category\u003c\/td\u003e\n\u003ctd\u003e10-60 VDC, Sink (Source Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Off-State Current\u003c\/td\u003e\n\u003ctd\u003e1.2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical DC Signal Delay On\u003c\/td\u003e\n\u003ctd\u003e6 +\/- 2 ms with digital filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm\u003c\/td\u003e\n\u003ctd\u003e1771-WN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eConformal Coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC-5 Backplane Communication and I\/O Scaling Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1771-ICD operates as a PLC-5 digital input module using the 1771 chassis backplane for controller data exchange. The module provides 16 DC input channels with field voltage detection circuits designed for discrete status monitoring.\u003c\/p\u003e\n\u003cp\u003eThe module configuration supports PLC-5 I\/O density scaling through chassis-based slot allocation and backplane bus communication velocity management. System communication performance depends on the installed PLC-5 processor, adapter modules, and configured network architecture. Firmware flash compatibility must be verified according to the controller and communication hardware revision.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the operating input voltage range of the 1771-ICD?\u003cbr\u003eA: The module accepts 20-60 VDC field input signals within the specified DC voltage category.\u003c\/p\u003e\n\u003cp\u003eQ: What is the backplane current requirement of the 1771-ICD?\u003cbr\u003eA: The module requires 250 mA from the 5 VDC PLC-5 backplane supply.\u003c\/p\u003e\n\u003cp\u003eQ: Which wiring arm is specified for field termination?\u003cbr\u003eA: The 1771-ICD uses the 1771-WN wiring arm for field signal connection.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-ICD module into a compatible 1771 PLC-5 chassis slot after confirming chassis power isolation and available backplane capacity. Verify DC input polarity and field device voltage levels before connecting terminal wiring.\u003c\/p\u003e\n\u003cp\u003eSeparate low-level input signal cables from high-current switching conductors to reduce electromagnetic interference. Apply cable shielding and grounding practices according to the cabinet grounding design and plant electrical standards.\u003c\/p\u003e\n\u003cp\u003eConfirm that the 1771-WN wiring arm is fully seated and that terminal connections are mechanically secured. After installation, verify input status indication and PLC-5 I\/O configuration before placing the module into normal operation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43681315815514,"sku":"1771-ICD","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-ICD2.jpg?v=1784528674","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1771-icd-plc-5-digital-dc-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}