Product Details
Product Description
The Allen-Bradley 1746-NIO4I is a four-point analog combination module for the SLC 500 series. It provides two analog inputs and two analog outputs, supporting both current and voltage signal ranges. With high resolution, fast update times, and tested isolation, it is designed for precise signal conversion and reliable integration into rack-mounted PLC systems.
Technical Specifications
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Manufacturer Allen-Bradley
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Product Line SLC 500
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Product Type Analog Combination Module
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Part Number 1746-NIO4I
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Weight 1.00 lbs (0.45 kg)
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Inputs 2 analog inputs
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Input Signal Ranges -20 to +20 mA; -10 to +10 VDC
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Outputs 2 analog outputs
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Output Voltage Range -10 to +10 VDC (1 LSB resolution)
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Resolution 16-bit input, 14-bit output
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Bandwidth 10 Hz
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Update Time 512 µs
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Step Response 60 ms input, 2.5 ms output
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Backplane Current Draw 55 mA at 5 VDC; 145 mA at 24 VDC
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Isolation Voltage 500 V tested
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Mounting Rack mountable, 1 slot width
Application Scenarios
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Signal conversion for process control systems requiring both current and voltage inputs
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Industrial automation systems needing precise analog input/output handling
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Applications requiring fast update times and high-resolution data acquisition
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Integration into SLC 500 racks for mixed analog/digital control
FAQ
Q: How many inputs and outputs does the 1746-NIO4I provide? A: It provides 2 analog inputs and 2 analog outputs.
Q: What is the resolution of the inputs and outputs? A: Inputs are 16-bit resolution, while outputs are 14-bit resolution.
Q: What isolation voltage is tested for this module? A: The module is tested to 500 V isolation.
Comparison with Similar Models
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1746-NI4: Analog input-only module.
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1746-NO4I: Analog output-only module.
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1746-NIO4I: Combination module with both inputs and outputs for flexible 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
Why Programmable Logic Controllers Drop into Stop Mode: An Expert Analysis
Industrial automation systems rely heavily on Programmable Logic Controllers (PLCs) to maintain uninterrupted production. When a PLC unexpectedly shifts from Run to Stop mode, whole manufacturing lines stall.
As control systems evolve across modern factory automation, understanding the root causes of these interruptions helps engineers minimize costly downtime. This technical guide breaks down why PLCs trip into Stop mode and provides practical strategies to mitigate system faults.
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.