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SKU:1771-IAD
Allen-Bradley PLC-5 16 Point Input Module 120V 1771-IAD
Manufacturer: Allen-Bradley
Product No.: 1771-IAD
Product Type: Input Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 1080g
Shipping port: Xiamen
Warranty: 12 months
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Description
Allen-Bradley 1771-IAD PLC-5 Digital Input Module
Product Overview
The Allen-Bradley 1771-IAD is a 16-point digital AC/DC input module for the PLC-5 system. It accepts 120V AC/DC signals with an operating voltage range of 79-138V AC/DC [citation:1][citation:8]. The module is designed for use with 1771-A1B, A2B, A3B, A3B1, A4B, AM1, and AM2 chassis and requires a 1771-WH wiring arm. Note: Rockwell Automation discontinued this module on March 10, 2020 [citation:1]. Weight is 1.08 kg (2.38 lbs).
Specifications
| Parameter | Value |
|---|---|
| Brand | Allen-Bradley / Rockwell Automation |
| Model | 1771-IAD |
| Series | PLC-5 |
| Module Type | Digital AC/DC Input Module |
| Number of Inputs | 16 |
| Voltage Category | 120V AC/DC |
| AC Operating Voltage | 79-138 VAC |
| DC Operating Voltage | 79-138 VDC |
| Backplane Current | 195 mA |
| Max AC Off-State Current | 2.8 mA |
| AC Signal Delay ON | 5 ms (±3) |
| AC Signal Delay OFF | 25 ms (±5) |
| DC Signal Delay ON | 3 ms (±0.1) or 10 ms (±1) |
| DC Signal Delay OFF | 25 ms (±5) |
| Wiring Arm | 1771-WH |
| Module Location | 1771-A1B, A2B, A3B, A3B1, A4B, AM1, AM2 Chassis |
| Weight | 1.08 kg (2.38 lbs) |
| GTIN | 10662468177624 |
Lifecycle Status
Discontinued: Rockwell Automation discontinued the 1771-IAD on March 10, 2020. It is no longer available for sale from the manufacturer. The replacement category is listed as Engineering Replacement [citation:1].
Key Features
- 16 digital input channels rated at 120V AC/DC
- Wide operating voltage range: 79-138V AC or DC [citation:1][citation:8]
- Fast AC signal response with 5 ms ON delay and 25 ms OFF delay
- DC signal delay options of 3 ms or 10 ms ON, with 25 ms OFF
- Requires 1771-WH field wiring arm for connection
- Compatible with 1771-A1B, A2B, A3B, A3B1, A4B, AM1, and AM2 chassis
- 195 mA backplane current draw
Installation Notes
Install the module in any I/O slot of the compatible 1771 chassis, excluding the extreme left slot which is reserved for processors or adapters [citation:4]. Connect field wiring using the 1771-WH wiring arm, which allows module replacement without disconnecting field wires. Remove power from the backplane and wiring arm before installing or removing the module [citation:4]. Key the backplane connector according to the module requirements before insertion. For conversion to newer platforms, Rockwell provides field wire conversion modules such as 1492-CM1771-LD001 for migration to 1756-IA16 [citation:15].
FAQs
Q1: Is the 1771-IAD still available from Rockwell Automation?
A1: No. The module was discontinued on March 10, 2020, and is no longer available for sale from the manufacturer [citation:1].
Q2: How many inputs does the 1771-IAD have?
A2: 16 digital input channels.
Q3: What is the difference between the 1771-IAD and 1771-IA2?
A3: The 1771-IAD has 16 inputs with a 79-138V AC/DC range, while the 1771-IA2 has 8 inputs with an 87-138V AC / 97-138V DC range [citation:7][citation:15].
Additional Specifications
- Black
- Gray
Scalar (V/f)
Vector
AC-powered
Buying Guide
- Confirm the exact model, part number, and specifications before ordering.
- Ensure compatibility with your current machinery or control systems.
- Reach out via sale@etowonauto.com or +8617859788089 for technical assistance.
- Review delivery options, lead times, and shipping requirements.
- Follow manufacturer instructions and best practices during installation.
Shipping And Return
In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.
Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.
For more details, please review our Shipping & Return Policy.

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