Allen-Bradley 1771-ICD PLC-5 Digital DC Input Module

Product Overview

The Allen-Bradley 1771-ICD functions as a high-density discrete input module for the legendary PLC-5 platform. It bridges the gap between field-level DC sensors and the processor by converting 20-60V DC signals into logic-level data. Despite the "discontinued" status from the original manufacturer, we provide this unit as 100% Brand New original stock, ensuring your legacy architecture maintains peak operational availability without requiring a costly full-system migration.

Technical Specifications

The 1771-ICD module integrates seamlessly into any 1771 Universal I/O chassis:

Engineering Advantages

The 1771-ICD offers specific technical benefits for maintaining and optimizing aging industrial assets:

• Broad Voltage Window: The wide 20-60V DC input range accommodates various power supply fluctuations and supports diverse field devices, including proximity switches, limit switches, and photoelectric sensors.

• Legacy Infrastructure Protection: Installing this brand-new module eliminates the risks associated with used or refurbished parts. It preserves the integrity of existing PLC-5 racks while delaying the need for expensive "rip-and-replace" upgrades.

• Hardened Industrial Design: The 1771 series architecture utilizes a ruggedized swing-arm wiring system. This design allows you to replace modules without touching field wiring, significantly reducing the risk of wiring errors during emergency maintenance.

• Effective EMI Suppression: Internal circuitry filters electrical noise commonly found in long DC cable runs, preventing false triggering and ensuring the processor receives clean, accurate state transitions from the factory floor.

FAQs

Can the 1771-ICD replace other 1771 DC input modules?

The 1771-ICD specifically handles the 20-60V DC range. If you currently use a lower voltage module (like the 1771-IB), you must verify that your field devices and power supply fall within the 20-60V window before swapping.

Does this module require a specific terminal swing-arm?

Yes, it utilizes the standard 1771-WN wiring arm. This allows you to pivot the wiring away from the module for fast extraction and insertion, maintaining system uptime.

How do I verify the health of the 16 input points?

The front panel includes status LEDs for each of the 16 points. A lit green LED indicates the presence of a valid DC voltage (20-60V) at the corresponding input terminal, simplifying visual diagnostics during commissioning.

Is this unit truly "Brand New" given its discontinued status?

Yes. We specialize in sourcing surplus "New in Box" (NIB) inventory. This 1771-ICD remains in its original factory packaging with zero previous field service, providing the maximum possible lifespan for your PLC-5 system.