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
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