Product Details
Overview
The Allen-Bradley 1746-NI8 is an 8-channel analog input module designed for SLC 500 PLC systems. It supports both voltage and current signals, providing high-resolution analog data acquisition for industrial automation applications. Engineered for precise signal processing, this module integrates seamlessly into Compact I/O racks and delivers reliable performance in demanding environments.
Technical Specifications
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Model / Part Number: 1746-NI8
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Brand: Allen-Bradley
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Product Type: Analog Input Module, 8-Channel
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Module Type: Analog I/O for SLC 500 series
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Weight: 1.0 lbs (0.45 kg)
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Input Signal Range:
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Current: 0–20 mA, 4–20 mA, 0–1 mA, 20 mA
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Voltage: 0–5V DC, 1–5V DC, 0–10V DC, -10 to +10V DC, -20 to +20 mA
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Input Impedance: 250 Ω
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Resolution: 16-bit analog-to-digital conversion
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Update Time: 6 ms per channel
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Step Response: 0.75–730 ms
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Conversion Method: Successive approximation with switched capacitor
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Bandwidth: 1–75 Hz
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Selectable Input Filters: 1, 2, 5, 10, 20, 50, 75 Hz
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Data Format: Engineering Units scaled for PID Proportional Counts (-32,768 to +32,767)
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Backplane Current Draw: 200 mA @ 5V, 100 mA @ 24V DC
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Thermal Dissipation: 3.4 Watts
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LED Indicators: 9 green status LEDs (8 channels + module status)
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Wire Size: 14 AWG
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Chassis Slot: Any I/O slot except slot 0
Applications
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Signal monitoring and acquisition in industrial automation
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Process control with SLC 500 PLCs
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Integration with PID loops for precise control of analog devices
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Suitable for combination AC/DC I/O environments
FAQs
Q1: Which signal types are supported?
Both voltage and current inputs, including 0–20 mA, 4–20 mA, 0–10V, and 1–5V DC.
Q2: Can this module be installed in slot 0?
No, installation is allowed in any I/O slot except slot 0.
Q3: How fast does it update analog readings?
Each channel updates every 6 milliseconds for real-time control applications.
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
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.
Mastering PLC Power Supply Architectures and Operating Voltages
Selecting the correct operating voltage is a critical step in designing reliable industrial automation systems. Whether you are working with a compact PLC or a large-scale DCS, your power architecture dictates the system's longevity. In this guide, we explore the standard voltage ranges and power distribution strategies required to maintain stable factory automation operations.