1771-NT2 Allen-Bradley PLC-5 Thermocouple/Millivolt Input Module

Product Overview

The Allen-Bradley 1771-NT2 serves as a high-precision N-Series analog input interface for the PLC-5 platform. It converts low-level millivolt and thermocouple signals into digital data for the controller, enabling micro-accurate temperature monitoring in heavy industrial environments. This module supports eight independent channels and interfaces directly with a wide variety of thermocouple alloys. We supply this unit as 100% Brand New and Original, ensuring your legacy infrastructure maintains peak performance with factory-calibrated accuracy.

Technical Specifications

The 1771-NT2 utilizes an advanced analog-to-digital architecture to deliver exceptional resolution across multiple sensor types.

Engineering Advantages

• Ultra-High Resolution Sensing: This module offers a resolution of 0.95 Microvolts per bit. This sensitivity allows the PLC to detect minute thermal fluctuations, ensuring tighter PID control loops in critical processes like glass tempering or chemical refining.

• Broad Thermocouple Versatility: The 1771-NT2 natively supports nine different thermocouple types. Engineers standardize on this single part number to handle diverse temperature ranges across the plant floor, from cryogenic monitoring to high-heat furnace control.

• Simplified Field Wiring: The module utilizes the 1771-WH wiring arm. This design allows technicians to pre-wire the field terminations once; they can then swap the module without disconnecting any field wires, drastically reducing Mean Time to Repair (MTTR).

• N-Series Noise Immunity: As an "N-Series" module, the 1771-NT2 features enhanced filtering and isolation. It successfully rejects electromagnetic interference common in racks located near large motor drives or induction heating equipment.

FAQs

• Does the 1771-NT2 support Cold Junction Compensation (CJC)? Yes. To ensure measurement accuracy, you must use the 1771-WH wiring arm or the 1771-RTP1 panel, which houses the CJC thermistors. These sensors compensate for the ambient temperature at the terminal junctions.

• Can I mix millivolt and thermocouple inputs on the same module? Yes. You configure each of the eight channels independently via the PLC-5 software. This allows you to monitor raw millivolt signals alongside various thermocouple types on a single rack slot.

• How does the module handle a broken sensor wire? The 1771-NT2 includes open-circuit detection. When the module senses an open thermocouple, it drives the data to a specific out-of-range value, triggering your programmed safety alarms or emergency shutdowns.

• Is this a refurbished or used unit? Absolutely not. We guarantee this 1771-NT2 is 100% Brand New and Original. It arrives in its original factory packaging, ensuring no prior thermal stress or component degradation.