{"product_id":"allen-bradley-1771-iad-120v-ac-dc-16-input-module","title":"Allen-Bradley 1771-IAD 120V AC\/DC 16-Input Module","description":"\u003ch2\u003e\u003cstrong\u003eAllen-Bradley 1771-IAD Discrete Input Module Overview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features and Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003eAllen‑Bradley 1771‑IAD\u003c\/strong\u003e features \u003cspan style=\"color: #2563eb;\"\u003e16 input channels\u003c\/span\u003e accepting a voltage range of \u003cspan style=\"color: #2563eb;\"\u003e79‑138 Volts\u003c\/span\u003e for both AC and DC operation, with a \u003cspan style=\"color: #2563eb;\"\u003e120V AC\/DC\u003c\/span\u003e voltage category.\u003c\/li\u003e\n\u003cli\u003eUsers can select typical On‑Delay times: \u003cspan style=\"color: #2563eb;\"\u003e3 ms (±0.1 ms)\u003c\/span\u003e or \u003cspan style=\"color: #2563eb;\"\u003e10 ms (±1 ms)\u003c\/span\u003e for DC signals, and \u003cspan style=\"color: #2563eb;\"\u003e5 ms (±3 ms)\u003c\/span\u003e for AC signals. The module has a typical Off‑Delay of \u003cspan style=\"color: #2563eb;\"\u003e25 ms (±5 ms)\u003c\/span\u003e for both AC and DC.\u003c\/li\u003e\n\u003cli\u003eThe module draws \u003cspan style=\"color: #2563eb;\"\u003e195 mA\u003c\/span\u003e from the backplane at 5V DC and has a maximum AC Off‑State current of just \u003cspan style=\"color: #2563eb;\"\u003e2.8 mA\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003eIt includes input filtering to reduce electrical noise and optoelectrical isolation to protect system logic from transients.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eChassis Compatibility and Installation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYou can install the \u003cstrong\u003e1771‑IAD\u003c\/strong\u003e module in multiple \u003cstrong\u003e1771\u003c\/strong\u003e chassis, including the \u003cstrong\u003e1771‑A1B, A2B, A3B, A3B1, A4B, 1771‑AM1, and AM2\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eProper keying ensures correct installation. Set the upper connector key between pins \u003cspan style=\"color: #2563eb;\"\u003e14 and 16\u003c\/span\u003e and the lower connector key between pins \u003cspan style=\"color: #2563eb;\"\u003e10 and 12\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003eThe module's dimensions are \u003cspan style=\"color: #2563eb;\"\u003e3.5 x 6.5 x 2.0 inches\u003c\/span\u003e (89 x 165 x 51 mm), offering a compact footprint for your I\/O rack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #2563eb;\"\u003eWhat is the operating voltage range for the 1771‑IAD?\u003c\/span\u003e The \u003cstrong\u003e1771‑IAD\u003c\/strong\u003e operates reliably within a voltage range of \u003cstrong\u003e79 to 138 Volts\u003c\/strong\u003e for both AC and DC inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #2563eb;\"\u003eWhat chassis are compatible with this module?\u003c\/span\u003e You can mount the \u003cstrong\u003e1771‑IAD\u003c\/strong\u003e in a variety of \u003cstrong\u003e1771\u003c\/strong\u003e chassis, such as the \u003cstrong\u003e1771‑A1B, A2B, A3B, A3B1, A4B, 1771‑AM1, and AM2\u003c\/strong\u003e series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #2563eb;\"\u003eWhat are the available signal delay settings?\u003c\/span\u003e The \u003cstrong\u003eAllen‑Bradley 1771‑IAD\u003c\/strong\u003e offers selectable Off‑to‑On delays. For DC, choose \u003cstrong\u003e3ms\u003c\/strong\u003e or \u003cstrong\u003e10ms\u003c\/strong\u003e; for AC, it's \u003cstrong\u003e5ms\u003c\/strong\u003e (typical). The On‑to‑Off delay is typically \u003cstrong\u003e25ms\u003c\/strong\u003e for both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #2563eb;\"\u003eDoes the module come with the wiring arm?\u003c\/span\u003e Yes, the package includes the \u003cstrong\u003e1771‑WH\u003c\/strong\u003e wiring arm. This accessory functions as a removable terminal block for easy installation and maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #2563eb;\"\u003eWhat is the backplane current requirement for this module?\u003c\/span\u003e The \u003cstrong\u003e1771‑IAD\u003c\/strong\u003e draws \u003cstrong\u003e195 mA\u003c\/strong\u003e from the \u003cstrong\u003e5V DC\u003c\/strong\u003e backplane supply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePartner Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNexAuto Technology Limited\u003c\/strong\u003e : \u003ca href=\"https:\/\/www.nex-auto.com\/\" target=\"_blank\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eContact Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor inquiries, please contact our sales team:\u003cbr\u003e\u003cstrong\u003eEmail:\u003c\/strong\u003e \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e\u003cbr\u003e\u003cstrong\u003ePhone\/WhatsApp:\u003c\/strong\u003e \u003ca href=\"https:\/\/wa.me\/8615392429628\" target=\"_blank\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45760599818401,"sku":"1771-IAD","price":236.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/1771-IAD-1.jpg?v=1772012265","url":"https:\/\/www.autonexcontrol.com\/it\/products\/allen-bradley-1771-iad-120v-ac-dc-16-input-module","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}