{"product_id":"allen-bradley-1771-ian-32-point-digital-ac-input-module","title":"Allen-Bradley 1771-IAN 32-point Digital AC Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-IAN\u003c\/strong\u003e is a \u003cstrong\u003e32-point digital AC input module\u003c\/strong\u003e for PLC-5 1771 I\/O systems. It provides \u003cstrong\u003e120V AC input detection\u003c\/strong\u003e across four groups of eight inputs each, with optoelectronic isolation, noise filtering, and individual status LEDs for reliable discrete signal acquisition in industrial control applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Inputs:\u003c\/strong\u003e 32 (4 sets of 8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Category:\u003c\/strong\u003e 120V AC\/DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Operating Range:\u003c\/strong\u003e 85–138 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current:\u003c\/strong\u003e 280 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax AC Off-State Current:\u003c\/strong\u003e 3.0 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax DC Off-State Current:\u003c\/strong\u003e 0.8 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical AC Delay (ON):\u003c\/strong\u003e 10 ± 7 ms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical AC Delay (OFF):\u003c\/strong\u003e 20 ± 15 ms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Isolation:\u003c\/strong\u003e Optoelectronic isolation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiltering:\u003c\/strong\u003e Input noise filtering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Arm:\u003c\/strong\u003e 1771-WN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0–60 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 3.5 × 6.5 × 2.0 in (89 × 165 × 51 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.2 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e A, B\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Channel Density:\u003c\/strong\u003e 32 inputs in a single module slot maximizes I\/O density in 1771 chassis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e120V AC Compatibility:\u003c\/strong\u003e Direct interface with standard industrial AC switching devices\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptoelectronic Isolation:\u003c\/strong\u003e Protects controller electronics from field-side electrical interference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndividual Status LEDs:\u003c\/strong\u003e Each input features a dedicated LED for fast troubleshooting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService-Friendly Wiring:\u003c\/strong\u003e 1771-WN wiring arm allows module replacement without disconnecting field wiring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Noise Filtering:\u003c\/strong\u003e Built-in filtering reduces false triggering from electrical noise\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC limit switch and proximity sensor monitoring\u003c\/li\u003e\n\u003cli\u003ePushbutton and selector switch interfacing\u003c\/li\u003e\n\u003cli\u003ePilot light and annunciator status detection\u003c\/li\u003e\n\u003cli\u003eMotor starter auxiliary contact monitoring\u003c\/li\u003e\n\u003cli\u003eHigh-density discrete input panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Preparation:\u003c\/strong\u003e Install the 1771-IAN into a compatible 1771-series I\/O chassis. Verify 280 mA backplane capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Arm Installation:\u003c\/strong\u003e Attach the \u003cstrong\u003e1771-WN wiring arm\u003c\/strong\u003e for field terminal access. This enables RIUP (Removal and Insertion Under Power).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Wiring:\u003c\/strong\u003e Connect 120V AC field devices to the input terminals. Each of the 32 inputs has a dedicated terminal and common connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroup Configuration:\u003c\/strong\u003e Inputs are organized in 4 groups of 8. Wire each group according to application requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus Verification:\u003c\/strong\u003e Apply AC signals and verify individual input LEDs illuminate correctly for each active channel.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the 1771-IAN require external power?\u003c\/strong\u003e\u003cbr\u003e\nA: No. The module draws power from the I\/O chassis backplane. Field devices supply their own 120V AC signals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can the 1771-IAN accept DC signals?\u003c\/strong\u003e\u003cbr\u003e\nA: The module is optimized for AC signals (85–138V AC). DC compatibility is limited; verify specifications for DC applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How are the 32 inputs organized?\u003c\/strong\u003e\u003cbr\u003e\nA: The inputs are arranged in 4 groups of 8 channels each, with individual commons per group.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the replacement for new installations?\u003c\/strong\u003e\u003cbr\u003e\nA: For new designs, Rockwell recommends ControlLogix 1756-IA16I or 1756-IA32 modules.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChoose 1771-IAN when high-density AC input (32 points) is required in a single slot\u003c\/li\u003e\n\u003cli\u003eVerify field device voltage is within 85–138V AC range\u003c\/li\u003e\n\u003cli\u003eConsider total backplane current draw when multiple high-density modules are installed\u003c\/li\u003e\n\u003cli\u003eUse 1771-WN wiring arm for hot-swappable module replacement\u003c\/li\u003e\n\u003cli\u003eFor DC input applications, evaluate 1771-IQ16 or 1771-IND modules\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53803436474552,"sku":"1771-IAN","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1771-IAN2.png?v=1784796205","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1771-ian-32-point-digital-ac-input-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}