Product Details
Product Description
The 1771-IFMS is a high-performance, 8-channel differential analog input module designed for the Allen-Bradley PLC 5 platform, specifically engineered to capture low-level 0–50 mV signals in hazardous environments. Featuring an intrinsically safe architecture and 12-bit resolution, this conformal-coated module provides a rapid 14.5 ms update rate and high-precision data conversion (0.1% accuracy) without the need for external power, making it an essential component for critical millivolt measurements in volatile industrial settings.
Technical Specifications
-
Module Architecture: Fast Millivolt Analog Input
-
Input Configuration: 8 Differential Channels (Intrinsically Safe)
-
Measurement Range: 0 to 50 mV DC
-
A/D Resolution: 12-bit binary
-
Data Representation: ±32,767 Binary or ±9,999 BCD (selectable)
-
Sampling Rate: 14.5 ms update for all 8 channels
-
System Accuracy: 0.1% of range at 25 °C
-
Non-Linearity: ±1 LSB
-
Backplane Current Draw: 750 mA
-
Isolation: Differential through intrinsically safe circuitry
-
Required Wiring Arm: 1771-WG
-
Environmental Protection: Conformal Coated PCB
-
Mounting Compatibility: 1771 Universal I/O Chassis
-
Unit Mass: 1.22 kg (2.69 lbs)
Application and Installation
This module is primarily utilized in process industries such as chemical refining, oil and gas, and pharmaceutical manufacturing where millivolt-level signals originate from Class I, II, or III hazardous locations. The 1771-IFMS ensures that the energy levels sent into the hazardous area are limited to prevent ignition.
Engineering FAQ
What is the benefit of the conformal coating on this module?The coating provides a thin polymeric film over the components of the 1771-IFMS. This is essential for PLC 5 systems located near sea air or chemical processing lines where airborne contaminants could otherwise cause short-circuiting or traces to corrode over time.
How does the "Fast" designation affect signal processing?With an update time of 14.5 ms for the entire channel block, the 1771-IFMS is significantly quicker than standard analog modules. This makes it suitable for high-speed PID loops or protective monitoring where millivolt fluctuations must be detected and processed by the PLC 5 processor in near real-time.
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 Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.
Essential Motion Control Commands: A Practical Guide for Engineers
Automation engineers often rely on precise position and speed control to drive modern factory machinery. Modern industrial systems, such as Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS), depend heavily on standardized motion instructions. Mastering these commands ensures operational safety, protects mechanical components, and optimizes cycle times across production lines.