{"product_id":"allen-bradley-1771-dw-input-module-reliable-delivery","title":"1771-DW | Allen-Bradley Wire Fault Digital DC Input Module For PLC-5 Systems","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe Allen-Bradley 1771-DW is a wire fault digital input module designed for PLC-5 systems that require monitored DC input channels. It operates from 15–27VDC and supports detection of open and short circuit wiring faults across connected devices. The module converts up to seven DC input signals into logic levels compatible with the 1771 I\/O architecture.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eI\/O Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1771-DW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital Input Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital DC Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10–60VDC, Sink (Source Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Operating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15–27VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax DC Off-State Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Delay (On\/Off)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e33 ±6 ms contact status; 3 ±2 ms wire-fault status\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePulse Capture Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50–9.999 microseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring Arm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1771-WA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1500VDC opto-electrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 × 6.5 × 2.0 in (89 × 165 × 51 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40–85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKeying Positions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBetween pins 2–4 and 20–22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Wiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14-gauge stranded, 3\/64 in insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About 1771-DW\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe 1771-DW is a digital wire fault input module within the Allen-Bradley 1771 family, engineered to detect both contact status and wiring issues across seven monitored DC inputs. Its construction includes front-mounted status indicators for each channel along with a manual reset pushbutton for clearing detected wire faults. The module integrates easily with PLC-5 controllers and uses a 24VDC supply with shunt resistors to support accurate wire-fault detection. Typical applications include safety interlocks, monitored switches, and DC devices requiring confirmation of both signal state and wiring integrity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSeven monitored inputs: Converts on\/off DC signals into PLC-compatible logic levels.\u003c\/li\u003e\n\u003cli\u003eWire-fault detection: Identifies short circuits and open circuits across input wiring.\u003c\/li\u003e\n\u003cli\u003eFront-panel indicators: Provides individual status LEDs for each input channel.\u003c\/li\u003e\n\u003cli\u003eManual reset switch: Allows restoration of normal operation after correcting wiring faults.\u003c\/li\u003e\n\u003cli\u003eWide DC voltage support: Operates from 15–27VDC with recommended 24VDC supply.\u003c\/li\u003e\n\u003cli\u003eFast signal response: Typical 33 ms contact status delay and 3 ms wire-fault detection delay.\u003c\/li\u003e\n\u003cli\u003eHigh isolation: Provides 1500VDC opto-electrical isolation for signal protection.\u003c\/li\u003e\n\u003cli\u003eCompatible hardware: Uses the 1771-WA wiring arm and installs in 1771 chassis systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1771-DW delivers the reliability and precision required for monitored DC input systems and fault-tolerant automation applications.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":47612565324074,"sku":"1771-DW","price":802.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/1771-DW.webp?v=1709130450","url":"https:\/\/iqelectro.com\/products\/allen-bradley-1771-dw-input-module-reliable-delivery","provider":"IQElectro","version":"1.0","type":"link"}