Product Details
Product Overview
The 1771-NT1 serves as a specialized thermocouple input module within the Allen-Bradley PLC-5 ecosystem. It interfaces directly with temperature sensors to provide high-resolution thermal data to the processor, supporting both millivolt (mV) and standard thermocouple signals. This module plays a critical role in thermal processing, furnace control, and environmental monitoring applications. We provide this unit as 100% Brand New and factory-original, ensuring that your legacy control systems maintain laboratory-grade temperature accuracy without the drift associated with used or refurbished components.
Technical Specifications
The 1771-NT1 utilizes advanced filtering to process low-level analog signals in electrically noisy industrial environments.
| Feature | Specification |
| Input Type | Thermocouple / Millivolt (mV) |
| Number of Inputs | 8 Channels |
| Signal Range | ±100 mV |
| Product Line | PLC-5 (1771 Universal I/O) |
| Module Category | Analog Input |
| Mounting | 1771 Universal I/O Chassis |
| Power Consumption | Backplane Powered |
| Weight | 1.50 lbs (0.68 kg) |
Engineering Advantages
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Precision Signal Conditioning: The 1771-NT1 handles the micro-volt variations produced by thermocouples. Its internal circuitry compensates for non-linear sensor curves, delivering accurate temperature readings directly to the PLC data table for immediate logic execution.
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Integrated Cold Junction Compensation (CJC): This module automatically accounts for ambient temperature variations at the terminal connection point. This hardware-level compensation eliminates the need for external reference junctions, simplifying field wiring and increasing overall loop accuracy.
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Robust Noise Rejection: The module incorporates differential inputs and digital filtering to suppress 50/60 Hz line noise. This ensures stable temperature readings even when the thermocouple wires run near high-voltage motor leads or switching power supplies.
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Extended System Longevity: As a 100% Brand New original part, the 1771-NT1 provides a drop-in replacement for failed legacy units. It avoids the compatibility issues and calibration errors common with modern third-party signal converters, allowing you to maintain your existing validated control logic.
FAQs
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Does the 1771-NT1 require a specific wiring arm?
Yes. You must use the 1771-WN wiring arm to connect your field thermocouples. The wiring arm allows you to replace the module without disconnecting any field wires, drastically reducing maintenance downtime.
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Which thermocouple types does this module support?
The 1771-NT1 supports standard thermocouple types (such as J, K, T, E, R, S, and B) as well as direct ±100 mV signals. You configure the specific sensor type via the PLC-5 block transfer instructions (BTR/BTW).
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What is the advantage of "Brand New" stock for a discontinued 1771 module?
Discontinued analog modules often suffer from "component aging," where internal reference voltages drift over time. Our Brand New units come from original factory-sealed stock, guaranteeing that the internal electronics meet the original manufacturer’s calibration specifications.
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How do I troubleshoot a "Channel Fault" on the 1771-NT1?
Check the status bits in the block transfer read (BTR) file. The module identifies open-circuit conditions (broken thermocouple wires) or out-of-range signals per channel, allowing for rapid field-side diagnostics.
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
Understanding Marshalling Cabinets in Industrial Control Systems Architecture
Industrial control system deployments rely on structured signal distribution to bridge field instrumentation with central processing hardware. A marshalling cabinet serves as the vital intermediate connection point between heavy field home-run multi-pair cables and delicate input/output (I/O) modules housed inside Programmable Logic Controller (PLC) or Distributed Control System (DCS) enclosures. By segregating field cable terminations from control hardware, engineers maintain system flexibility, safeguard controller components, and streamline commissioning workflows.
FAT vs SAT in Industrial Control Systems: Key Differences and Execution Guide
Industrial control system deployment relies on strict verification protocols to guarantee operational safety, system stability, and regulatory compliance. Commissioning complex Programmable Logic Controller (PLC) racks, Distributed Control Systems (DCS), and Safety Instrumented Systems (SIS) requires two critical milestones: the Factory Acceptance Test (FAT) and the Site Acceptance Test (SAT). Both procedures validate that system automation meets design specifications, but they occur at different stages of project execution and target distinct operational risks.
Hub vs Switch vs Router in Industrial Automation Architecture
Modern factory automation relies on reliable industrial networking infrastructure to exchange real-time field data across operational technology systems. Engineers often encounter networking hardware like hubs, switches, and routers when integrating Programmable Logic Controllers, Distributed Control Systems, and SCADA monitoring nodes. Although these devices share physical ports, they operate at different layers of the Open Systems Interconnection reference model and deliver distinct traffic management capabilities.