Product Overview
The Allen-Bradley 1746-NI8 is a high-precision analog input module designed for seamless integration with Allen-Bradley’s SLC 500 modular PLC system. As a critical component in industrial automation, the 1746-NI8 excels at converting continuous analog signals from sensors (such as temperature, pressure, or flow transducers) into digital data for processing by the PLC. This capability makes it essential for applications in process control, manufacturing, and energy management, where real-time monitoring of physical variables is critical. Its rugged construction ensures reliable performance in harsh industrial environments, while its flexible configuration options simplify calibration and system setup. Whether monitoring pressure in a chemical reactor or temperature in a production oven, the Allen-Bradley 1746-NI8 delivers accurate, consistent data, enabling precise control and operational efficiency.
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Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | Allen-Bradley 1746-NI8 |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Type | Analog Input Module |
| Input Channels | 8 differential analog inputs |
| Input Ranges | ±10 VDC, ±5 VDC, ±2.5 VDC, 0-10 VDC, 4-20 mA (configurable per channel) |
| Accuracy | ±0.1% of full scale (at 25°C) |
| Operating Temperature | 0°C to 60°C |
| Mounting Type | SLC 500 chassis (1746 series) |
Key Features and Benefits
The Allen-Bradley 1746-NI8 is engineered to deliver precise analog signal acquisition, combining versatility and reliability to meet the demands of complex industrial systems. Its 8 differential input channels minimize noise interference, ensuring accurate data capture even in electrically noisy environments—critical for applications like pharmaceutical manufacturing or precision machining, where signal integrity directly impacts product quality.
A key advantage of the 1746-NI8 is its configurable input ranges, allowing each channel to be independently set to voltage (±10 VDC, ±5 VDC, etc.) or current (4-20 mA) signals. This flexibility eliminates the need for multiple specialized modules, reducing inventory costs and simplifying system design. The module’s high accuracy (±0.1% of full scale) ensures that subtle changes in process variables are detected, enabling proactive adjustments to maintain optimal operating conditions.
Durability is built into the 1746-NI8’s design, with a wide operating temperature range (0°C to 60°C) and resistance to vibration and shock, making it suitable for harsh industrial settings. Integrated diagnostics provide real-time alerts for faults such as overvoltage or open circuits, enabling quick troubleshooting and reducing downtime.
Seamless integration with the SLC 500 platform and RSLogix 500 programming software ensures straightforward setup and calibration. When paired with analog output modules like the 1746-NO4I, the 1746-NI8 forms a complete analog I/O solution, enabling closed-loop control of processes. Backed by a one-year warranty and our expert technical support, the Allen-Bradley 1746-NI8 offers long-term reliability, with pre-sales assistance for system design and post-sales support for optimization.
Related Models
- Allen-Bradley 1746-NI4 – 4-channel analog input module, a compact alternative to the 1746-NI8 for smaller applications with fewer sensors.
- Allen-Bradley 1746-NO4I – 4-channel analog output module, commonly paired with the 1746-NI8 to create a complete analog I/O system in SLC 500 setups.
- Allen-Bradley 1746-A10 – 10-slot SLC 500 chassis that houses the 1746-NI8 and other modules, providing a centralized mounting solution.
- Allen-Bradley 1747-L532 – SLC 500 processor module fully compatible with the 1746-NI8, enabling real-time data processing and control logic execution.
- Allen-Bradley 1746-P2 – Power supply module that delivers stable power to the 1746-NI8 and other modules in the SLC 500 chassis.
- Allen-Bradley 1756-NI16I – ControlLogix analog input module, a higher-performance alternative to the 1746-NI8 for larger-scale systems requiring expanded channel counts.
- Allen-Bradley 1794-NI16 – Flex I/O analog input module, offering similar functionality to the 1746-NI8 but designed for distributed I/O networks.
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