Product Details
Product Description
The Allen-Bradley 1746-NIO4V is an analog combination module for the SLC 500 series, designed to handle both voltage and current signals. It provides two differential analog inputs and two non-isolated voltage outputs, making it suitable for applications requiring precise signal conversion and control. With high resolution, fast update times, and rack-mount compatibility, it ensures reliable performance 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-NIO4V
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Weight 1.00 lbs (0.45 kg)
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Module Type Analog combination module
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Inputs 2 differential voltage/current inputs
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Current Input Range -20 to +20 mA
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Current Input Resolution 1.22070 µA per LSB
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Voltage Input Range -10 to +10 VDC
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Voltage Input Resolution 305.176 µV per LSB
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Outputs 2 non-isolated voltage outputs
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Output Voltage Range -10 to +10 VDC
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Output Voltage Resolution 1.22070 mV per LSB
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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 (5 VDC) 55 mA
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Backplane Current (24 VDC) 115 mA
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Mounting Rack mount
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Slot Width 1
Application Scenarios
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Signal conversion for process control systems
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Industrial automation requiring precise analog input/output handling
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Applications needing 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-NIO4V provide? A: It offers 2 differential analog inputs and 2 non-isolated voltage 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 is the typical update time? A: The module updates in 512 microseconds, with a step response of 60 ms for inputs and 2.5 ms for outputs.
Comparison with Similar Models
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1746-NI4: Provides only analog inputs, no outputs.
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1746-NO4V: Provides only analog voltage outputs.
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1746-NIO4V: 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.