{"product_id":"allen-bradley-1771-ibdk-digital-input-module","title":"Allen-Bradley 1771-IBDK Digital Input Module","description":"\u003ch2\u003eAllen-Bradley 1771-IBDK Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for discrete DC signal acquisition in PLC-5 I\/O systems, the \u003cstrong\u003eAllen-Bradley 1771-IBDK\u003c\/strong\u003e (\u003cstrong\u003e1771-IBDK\u003c\/strong\u003e Digital Input Module) provides direct physical\/electrical execution for 16-point sinking input monitoring. The module interfaces field devices such as switches and sensors through 10-30 VDC inputs with opto-isolation, configurable input filtering, and LED channel indication.\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-IBDK\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\u003e0.89 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e140 mm x 130 mm x 35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane current 130 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003e16-point sinking DC digital input module\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\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003eApprox. 10 mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Filtering\u003c\/td\u003e\n\u003ctd\u003eSelectable 1 ms or 6 ms input delay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptoelectrical isolation with input filtering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicators\u003c\/td\u003e\n\u003ctd\u003eIndividual LED status indicators per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm Compatibility\u003c\/td\u003e\n\u003ctd\u003e1771-WH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley PLC-5 1771 I\/O chassis and remote I\/O adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtective Feature\u003c\/td\u003e\n\u003ctd\u003eConformal coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and PLC-5 I\/O Signal Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1771-IBDK operates as a PLC-5 discrete input interface module, transferring field contact status into the controller backplane through the 1771 I\/O architecture. The module uses optoelectrical isolation between field input circuits and internal logic circuits to reduce the effect of electrical transients. The selectable input delay filtering provides configurable response characteristics for mechanical contact signals and industrial sensor inputs.\u003c\/p\u003e\n\u003cp\u003eThe conformal coating applied to the circuit assembly provides additional protection against environmental contaminants such as moisture and dust. LED indicators on each input point provide local verification of signal states during commissioning and maintenance activities.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What type of field signals can the 1771-IBDK process?\u003cbr\u003eA: The module accepts 10-30 VDC discrete sinking input signals from field devices including switches, sensors, and contact-based devices.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1771-IBDK provide electrical isolation between field wiring and PLC logic?\u003cbr\u003eA: Yes. The module uses optoelectrical isolation with input filtering between the field input channels and internal module circuitry.\u003c\/p\u003e\n\u003cp\u003eQ: What is the function of the selectable input delay filter?\u003cbr\u003eA: The selectable 1 ms or 6 ms filter setting controls input response timing and helps manage signal noise or mechanical contact transitions.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-IBDK module into a compatible PLC-5 1771 I\/O chassis following the chassis installation procedure. Verify that field wiring polarity and DC input voltage levels match the module specifications before applying power.\u003c\/p\u003e\n\u003cp\u003eRoute DC signal wiring separately from high-voltage power conductors and high-current switching circuits to reduce electrical interference. Connect cable shields according to site grounding practices, normally at a single designated grounding point to prevent ground loop currents.\u003c\/p\u003e\n\u003cp\u003eUse the specified wiring arm connection for field termination and verify LED channel operation during commissioning. Confirm that the module is correctly seated in the chassis and that the backplane connection is free from contamination before system startup.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43681296941146,"sku":"1771-IBDK","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-IBDK1.jpg?v=1784526370","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1771-ibdk-digital-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}