Product Details
Product Description
The Allen Bradley 1746-NI4 is a four-channel analog input module designed for the SLC 500 series. It supports both current and voltage input signals, offering high-resolution conversion with delta–sigma modulation technology. With 16-bit resolution, fast update times, and reliable repeatability, this module is engineered for precise analog signal processing in industrial automation systems.
Technical Specifications
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Manufacturer: Allen Bradley
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Category: PLCs
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Product Line: SLC 500
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Part Number: 1746-NI4
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Weight: 1.00 lbs (0.45 kg)
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Module Type: Analog Input Module
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Backplane Current (5 V): 35 mA
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Backplane Current (24 VDC): 85 mA
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Input Signal Range: -20 to +20 mA or -10 to +10 VDC
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Bandwidth: 10 Hz
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Current Input Coding: -16,384 to +16,384
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Voltage Input Coding: -32,768 to +32,767
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Resolution: 16 bits
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Update Time: 512 microseconds
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Step Response: 60 milliseconds
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Conversion Type: Delta–Sigma Modulation
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Converter Resolution: 16-bit
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Repeatability: ±1 LSB
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Non-linearity: 0.01%
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Chassis Location: Any I/O slot except slot 0
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Cable Lengths Supported: 0.5, 1, 2.5, or 5.0 meters
Application Scenarios
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Designed for SLC 500 systems requiring precise analog input measurement
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Suitable for process control, monitoring, and automation environments
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Ideal for current and voltage signal acquisition with high accuracy
FAQ
Q: How many input channels does the 1746-NI4 provide? A: It supports four analog input channels.
Q: What type of signals can be measured? A: Both current (-20 to +20 mA) and voltage (-10 to +10 VDC) signals.
Q: What is the resolution of the converter? A: The module provides 16-bit resolution with delta–sigma modulation.
Comparison with Similar Models
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1746-NI4: Four-channel analog input, supports current and voltage signals
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1746-NI8: Eight-channel analog input, higher density option
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1746-NO4I: Four-channel analog output, designed for 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
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
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.