{"product_id":"1771-ibdk-b-allen-bradley-digital-input-module","title":"1771-IBDK\/B Allen-Bradley Digital Input Module","description":"\u003ch2\u003eAllen-Bradley 1771-IBDK\/B Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-IBDK\/B\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-IBDK\u003c\/strong\u003e Digital Input Module, operates as a dedicated hardware component for discrete DC signal acquisition within PLC-5 1771 I\/O chassis platforms. The module provides 16 sinking DC input channels with 10-30 VDC field signal handling, optoelectrical isolation, and configurable input delay filtering.\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\/B\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\u003e237.5 mm x 183 mm x 55 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 Delay Filter\u003c\/td\u003e\n\u003ctd\u003eSelectable 1 ms or 6 ms\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\u003eLED status indicator for each input channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtective Coating\u003c\/td\u003e\n\u003ctd\u003eConformal coating\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\u003ePLC-5 processors and remote I\/O adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC-5 I\/O Bus and Firmware Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 1771-IBDK\/B integrates with Allen-Bradley PLC-5 control platforms through the 1771 I\/O backplane interface. The module transfers discrete field input states through the chassis communication structure while maintaining electrical separation between field circuits and internal logic circuits.\u003c\/p\u003e\n\u003cp\u003eThe module supports I\/O density scaling within the PLC-5 architecture by providing 16 discrete input points in a single I\/O slot. Input filtering parameters allow adjustment of signal response behavior for different field device characteristics. Firmware flash compatibility is not applicable to this module generation, as configuration and operation are controlled through the PLC-5 hardware architecture.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the backplane current requirement of the 1771-IBDK\/B module?\u003cbr\u003eA: The module requires approximately 130 mA of backplane current from the 1771 I\/O chassis power system.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1771-IBDK\/B support isolated field inputs?\u003cbr\u003eA: The module provides optoelectrical isolation between input circuits and internal module electronics to reduce electrical interference transfer.\u003c\/p\u003e\n\u003cp\u003eQ: What input response filtering options are available?\u003cbr\u003eA: The module provides selectable input delay filtering with 1 ms and 6 ms settings.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-IBDK\/B module into a compatible PLC-5 1771 I\/O chassis slot and verify that the chassis power is removed before module insertion or removal. Confirm field wiring polarity and voltage levels before connecting external devices.\u003c\/p\u003e\n\u003cp\u003eUse the designated 1771-WH wiring arm for field termination. Route DC input signal cables separately from high-voltage power wiring and switching circuits to reduce electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003eConnect cable shields according to the plant grounding standard. Avoid multiple grounding points on shielded signal cables where ground loop currents may occur. Verify each input channel using the LED status indicators after wiring completion and system power restoration.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43681306443866,"sku":"1771-IBDK\/B","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-IBD_B_2.jpg?v=1784526091","url":"https:\/\/www.plcmasters.com\/products\/1771-ibdk-b-allen-bradley-digital-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}