Product Details
Product Description
The Allen Bradley 1771-IL is an isolated analog input module designed for legacy PLC-5 systems. It provides eight fully isolated differential channels, supporting both voltage and current input ranges. With high accuracy, auto-calibration, and robust isolation, this module ensures precise signal acquisition in demanding industrial environments.
Technical Specifications
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Manufacturer Allen Bradley
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Product Line PLC-5 Series
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Module Type Analog Input Module
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Part Number 1771-IL
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Number of Inputs 8 isolated differential channels
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Input Voltage Ranges +1 to +5 V DC, 0 to +5 V DC, ±5 V DC, ±10 V DC
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Input Current Ranges +4 to +20 mA, 0 to +20 mA, ±20 mA
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Resolution 16-bit binary across full range
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Accuracy (Voltage) Typical 0.01%, Max 0.05% @ 25 °C
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Accuracy (Current) Typical 0.06%, Max 0.1% @ 25 °C
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Backplane Current 1.3 A
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Data Format Natural Binary or BCD
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Channel Update Time 500 ms for 8 channels
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Internal Scan Rate 50 ms
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Chassis Compatibility All 1771 I/O chassis
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Wiring Arm 1771-WG
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Mounting 1-slot rack mountable
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Isolation 1000 V between channels
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Functional Highlights Auto-calibration, jumper-selectable voltage/current mode, open-circuit detection, overvoltage protection, block transfer instructions (BTW/BTR), LED indicators for diagnostics
Application Scenarios
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Precision analog signal acquisition in legacy PLC-5 systems
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Industrial processes requiring isolated differential inputs
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Environments where high accuracy and robust isolation are critical
FAQ
Q: How many channels does the 1771-IL provide? A: It supports 8 fully isolated differential input channels.
Q: What input ranges are supported? A: Voltage ranges include ±10 V, ±5 V, 0–5 V, and +1–5 V. Current ranges include 0–20 mA, +4–20 mA, and ±20 mA.
Q: Is the module compatible with all PLC-5 chassis? A: Yes, it can be installed in any 1771 I/O chassis.
Q: How often should calibration be performed? A: Auto-calibration is integrated, but periodic verification is recommended for critical applications.
Comparable Models
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1771-IL: 8-channel isolated analog input module (this model)
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1771-IFE: Non-isolated analog input module for standard applications
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1771-IR: Resistance input module for specialized sensor measurements
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
Implementing FIFO and LIFO Data Sequencing in PLC Programming
Data management serves as a cornerstone of modern industrial automation. Whether tracking materials on a conveyor or managing batch sequences in a process, engineers frequently rely on sequential logic. Two primary structures—First-In-First-Out (FIFO) and Last-In-First-Out (LIFO)—form the bedrock of this data handling. Mastering these blocks allows programmers to optimize complex machine operations efficiently.
Evolving SCADA System Architectures in Industrial Automation
A robust Supervisory Control and Data Acquisition (SCADA) system serves as the heartbeat of modern industrial operations. Understanding SCADA system architecture is vital for engineers designing efficient control systems. These architectures have evolved from isolated, monolithic structures to highly interconnected, networked ecosystems. Choosing the right design requires balancing data visibility, processing power, and long-term scalability requirements.
Choosing the Right Controller: PLC vs. Motion Controller in Industrial Automation
Selecting the optimal control architecture is a foundational decision in industrial automation. Engineers must frequently choose between a Programmable Logic Controller (PLC) and a dedicated Motion Controller. While both systems manage machinery, their underlying design philosophies differ significantly, impacting performance, scalability, and system integration.