Product Details
Product Overview
The Allen Bradley 1771-IXHR provides high-precision temperature and millivolt sensing for legacy PLC-5 control systems. This module interfaces directly with various thermocouple types and millivolt sources, converting low-level analog signals into high-resolution digital data. We supply this unit as 100% Brand New original stock, featuring a factory-applied conformal coating to ensure long-term stability in corrosive or high-humidity industrial atmospheres.
Technical Specifications
The 1771-IXHR utilizes a high-speed backplane interface to deliver precise thermal telemetry across eight channels.
| Feature | Specification |
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Module Type | High-Resolution Thermocouple / Millivolt Input |
| Number of Inputs | 8 Floating Differential Channels |
| Resolution | 15 Bits + Sign (1.0°C or 1.0°F per bit) |
| Channel Update Rate | 25 ms for all 8 channels |
| Voltage Range | $\pm$99.99 mV |
| Thermocouple Types | Type B, E, J, K, R, S, T |
| Data Format | Natural Binary |
| Backplane Current | 750 mA |
| Wiring Arm | 1771-WH |
| Protective Coating | Conformal Coated |
| Mounting | Rack Mountable (1771 Universal Chassis) |
Engineering Advantages
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Ultra-Fast Thermal Response: With a channel update rate of 25 ms for all eight inputs, the 1771-IXHR captures rapid temperature fluctuations that standard analog modules might miss. This speed enables tighter PID control loops in high-precision heat treatment and chemical reaction processes.
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Floating Differential Inputs: The module employs eight floating differential inputs to reject common-mode noise. This architecture prevents ground loops and electrical interference from distorting sensitive millivolt signals, even in environments with heavy motor switching or high-frequency induction.
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Corrosion Resistance: The factory conformal coating protects internal circuitry against airborne contaminants, moisture, and chemical vapors. This hardware hardening makes the 1771-IXHR an ideal choice for wastewater treatment, oil and gas, and pulp and paper facilities.
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High-Resolution Accuracy: The 15-bit plus sign resolution ensures precise data conversion, translating to 1.0 degree per bit. This granularity allows the PLC-5 processor to make minute adjustments to fuel-to-air ratios or cooling valves, maximizing energy efficiency and product consistency.
FAQs
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What thermocouple types does the 1771-IXHR support?
The module supports a wide array of industrial standards, including Type B, E, J, K, R, S, and T thermocouples. It also accepts direct $\pm$99.99 mV signals for non-standard sensing applications.
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Does this module require an external power supply for the field side?
No. The 1771-IXHR draws its required 750 mA operating current directly from the 1771 backplane. This reduces wiring complexity and saves space in the remote I/O chassis or local rack.
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Can I hot-swap this module during operation?
While the 1771 chassis supports "Removal and Insertion Under Power" (RIUP), you must exercise caution to prevent system glitches. Always verify that your PLC-5 program handles I/O faults gracefully before removing the module from a live backplane.
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Why should I choose the "IXHR" version over standard thermocouple modules?
The "IXHR" variant offers significantly higher resolution (15-bit) and faster update times compared to standard 1771-IX units. Furthermore, the standard conformal coating provides an extra layer of protection for legacy systems operating in harsh or aging facilities.
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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