1771-NIV | Allen-Bradley | PLC-5 High-Resolution Analog Input Module

Product Overview

The 1771-NIV functions as a precision high-resolution analog input module within the legacy Allen-Bradley PLC-5 product line. This module converts delicate analog signals from field transmitters into digital data that the PLC-5 processor can interpret for complex control loops. It handles high-density data requirements where standard resolution modules fail to capture subtle process fluctuations. Although the manufacturer discontinued this series in 2017, we offer this unit as 100% Brand New and factory-original, ensuring your critical infrastructure maintains peak accuracy without the risks of used or refurbished hardware.

Technical Specifications

The 1771-NIV draws power directly from the 1771 I/O chassis backplane and provides high-fidelity signal conversion.

Engineering Advantages

• Superior Signal Granularity: The 1771-NIV utilizes high-resolution analog-to-digital converters. This allows the module to detect minute changes in pressure, temperature, or flow, providing the processor with the data needed for fine-tuned PID control in sensitive chemical or pharmaceutical environments.

• High-Density Integration: This module slides into a single slot of the 1771 Universal I/O chassis. Its efficient design maximizes the I/O capacity of your existing rack, delaying the need for expensive system migrations or rack expansions.

• Industrial-Grade Noise Rejection: The module’s internal circuitry filters out electromagnetic interference (EMI) commonly found in heavy industrial environments. This ensures that electrical noise from nearby motors or drives does not corrupt the integrity of the analog input data.

• Direct Legacy Replacement: As a 100% Brand New original component, the 1771-NIV provides an identical drop-in replacement for failed units. It eliminates the need for software reprogramming or wiring modifications, drastically reducing downtime during emergency repairs.

FAQs

• Can I use the 1771-NIV in a remote I/O chassis?

  Yes. The 1771-NIV operates seamlessly in both local and remote 1771 chassis, provided the Remote I/O adapter (such as a 1771-ASB) and the power supply can support the 1.2A current draw.

• What is the benefit of "High Resolution" compared to standard analog modules?

  High-resolution modules like the 1771-NIV provide more "bits" of data per signal range. This translates to smaller measurable increments, allowing the controller to see process changes that standard modules would ignore as "dead band."

• Does this module require a specific wiring arm?

  Yes. Like all 1771 modules, the 1771-NIV requires a specific 1771 wiring arm (sold separately or reused from your existing installation) to facilitate field-side connections without disturbing the module's backplane seat.

• Since this part is discontinued, how do you ensure it is "Brand New"?

  We source our 1771-NIV units from climate-controlled, factory-sealed surplus inventories. Every unit undergoes strict inspection to confirm the original factory seal remains intact, guaranteeing that the internal components have never seen operational hours.