{"product_id":"allen-bradley-1771-iad-digital-input-module","title":"Allen-Bradley 1771-IAD | Digital Input Module","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IAD\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom Allen-Bradley is a sixteen-channel digital input module. It accepts AC and DC signals, supporting 120VAC and 125VDC voltages. This module provides precise signal detection for PLC systems, ensuring reliable industrial automation operations.\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IAD\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003einstalls in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-A1B\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA2B\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA3B\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA3B1\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA4B\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-AM1\u003c\/strong\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAM2\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003echassis. Its universal design allows seamless integration across multiple 1771 series PLC configurations. The module interfaces with discrete devices such as pushbuttons, switches, and relay contacts.\u003c\/p\u003e\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IAD\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ehas a DC operating range of 79–138V and an AC range of 79–138V at 50\/60Hz. The backplane consumes 195 mA, while the maximum AC off-state current is 2.8 mA. Typical DC signal delays are 3 ±0.1 ms or 10 ±1 ms, and AC delays are 5 ±3 ms. The module supports 16 inputs with a voltage category rating of 120V AC\/DC.\u003c\/p\u003e\n\u003ch3\u003ePhysical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IAD\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emeasures 3.5 x 6.5 x 2.0 inches (89 x 165 x 51 mm) and mounts securely in standard 1771 chassis. It includes a 1771-WH wiring arm for organized connections. The robust construction ensures long-term durability in industrial environments.\u003c\/p\u003e\n\u003ch3\u003eFunctionality\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IAD\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eefficiently converts discrete AC or DC signals to the PLC backplane. Its precise timing and low off-state current allow consistent monitoring of switches, auxiliary contacts, and other field devices. This module enhances automation reliability while maintaining compact form factor for easy installation.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":50685985784104,"sku":"1771-IAD","price":156.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/1771-IAD1.jpg?v=1758094562","url":"https:\/\/www.powerdcs.com\/products\/allen-bradley-1771-iad-digital-input-module","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}