Product Details
Product Description
The Allen Bradley 1771-IAD is a digital input module designed for the PLC-5 system. It supports both AC and DC signals within the 79–138 V operating range, making it versatile for industrial automation applications. With 16 input channels and reliable signal delay performance, this module is engineered for consistent operation in demanding environments.
Technical Specifications
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Manufacturer: Allen Bradley
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Category: PLCs
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Product Line: PLC-5
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Part Number: 1771-IAD
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Weight: 1.00 lbs (0.45 kg)
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Module Type: Digital AC/DC Input Module
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Number of Inputs: 16 channels
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DC Operating Voltage: 79–138 VDC
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AC Operating Voltage: 79–138 VAC
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Voltage Category: 120 V AC/DC
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Typical DC Signal Delay (On): 3 ms (+/- 0.1) or 10 ms (+/- 1)
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Typical DC Signal Delay (Off): 25 ms (+/- 5)
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Typical AC Signal Delay (On): 5 ms (+/- 3)
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Typical AC Signal Delay (Off): 25 ms (+/- 5)
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Max AC Off-State Current: 2.8 mA
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Max DC Off-State Current: Not applicable
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Backplane Current: 195 mA
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Wiring Arm: 1771-WH
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Module Location: Compatible with 1771-A1B, A2B, A3B, A3B1, A4B, 1771-AM1, and AM2 chassis
Application Scenarios
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Designed for PLC-5 systems requiring AC/DC input monitoring
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Suitable for process control, manufacturing, and automation environments
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Provides reliable input signal detection for mixed voltage applications
FAQ
Q: How many input channels does the 1771-IAD provide? A: It supports 16 input channels.
Q: What is the operating voltage range? A: The module operates between 79–138 VAC or VDC.
Q: Which wiring arm is required? A: The compatible wiring arm is 1771-WH.
Comparison with Similar Models
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1771-IAD: AC/DC input, 16 channels, 120 V category
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1771-IA: AC-only input, 16 channels, lower cost option
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1771-ID: DC-only input, 16 channels, optimized for DC applications
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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Understanding VFD Mechanical Brake Logic and Control in Industrial Automation
Variable Frequency Drives (VFDs) play a crucial role in modern industrial automation by controlling motor speed, torque, and acceleration. However, high-inertia loads and vertical lifting systems require precise mechanical braking logic to ensure operational safety and prevent equipment damage.
Why Programmable Logic Controllers Drop into Stop Mode: An Expert Analysis
Industrial automation systems rely heavily on Programmable Logic Controllers (PLCs) to maintain uninterrupted production. When a PLC unexpectedly shifts from Run to Stop mode, whole manufacturing lines stall.
As control systems evolve across modern factory automation, understanding the root causes of these interruptions helps engineers minimize costly downtime. This technical guide breaks down why PLCs trip into Stop mode and provides practical strategies to mitigate system faults.