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- Allen Bradley
- 1746-NI8
- PLC Module/Rack
- USA
- 145 × 35 × 140 mm
- 0.34kg
- Xiamen, China
- New & In Stock
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Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Allen-Bradley 1746-NI8 Detailed Technical Overview
1. Product Overview
The Allen-Bradley 1746-NI8 is an analog input module designed for modular PLC systems based on the SLC 500 architecture. It provides eight input channels that support both voltage and current signals, allowing it to interface with a wide range of industrial sensors and transmitters.
This module is installed into a single slot of the PLC chassis and acts as a bridge between field instrumentation and the control processor. It converts continuous analog signals into digital values that can be processed for monitoring, control logic, and system optimization.
With its balanced combination of channel count and flexibility, the 1746-NI8 is widely used in medium-scale automation systems where multiple analog inputs are required without significantly increasing system complexity.
2. Brand Information
- Brand: Allen-Bradley
- Industry: Industrial automation and control systems
- Product Type: Analog input module
This brand is widely recognized for producing reliable and long-lasting automation components used in demanding industrial environments.
3. Product Series
- Series: SLC 500
- Category: Analog I/O module
- Module Type: Voltage and current input module
The SLC 500 series is a modular PLC platform that allows flexible system configuration. The 1746-NI8 module is specifically designed for analog signal acquisition and integrates seamlessly with other modules in the system.
4. Technical Parameters
Core Specifications Table
| Parameter | Value |
|---|---|
| Model | 1746-NI8 |
| Module Type | Analog Input |
| Series | SLC 500 |
| Number of Channels | 8 |
| Input Signal Type | Voltage / Current |
| Voltage Range | ±10 V DC |
| Current Range | 0–20 mA / 4–20 mA / ±20 mA |
| Resolution | 16-bit |
| Conversion Method | Sigma-Delta |
| Input Impedance (Voltage) | 1 MΩ |
| Input Impedance (Current) | 250 Ω |
| Backplane Current (5V) | 55 mA |
| Backplane Current (24V) | 85 mA |
| Isolation | 500 V AC |
| Step Response | 10–500 ms |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5–95% non-condensing |
| Dimensions (mm) | 145 × 35 × 140 |
| Weight (kg) | 0.34 kg |
5. Product Functions and Applications
Functional Description
- Converts analog signals (voltage/current) into digital data for PLC processing
- Supports multi-channel input for efficient system design
- Provides stable signal acquisition with high resolution
- Includes isolation to protect against electrical interference
- Enables real-time monitoring and feedback control
Typical Applications
- Process control systems (temperature, pressure, flow measurement)
- Industrial automation and production lines
- Water treatment and environmental monitoring
- Energy management systems
- Chemical and pharmaceutical processes
6. Product Advantages
1. Balanced Channel Capacity
Eight channels provide a good balance between system cost and input capability, suitable for medium-scale applications.
2. Flexible Signal Support
Compatible with both voltage and current inputs, allowing integration with various field devices.
3. High Precision Measurement
16-bit resolution ensures accurate and stable signal conversion.
4. Reliable Industrial Design
Built with strong isolation and noise immunity, suitable for harsh industrial environments.
5. Efficient Space Utilization
Single-slot design reduces cabinet space requirements while maintaining functionality.
7. Recommended Models (Same Series or Related)
SLC 500 Series Related Modules
| Model | Type | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-NI4 | Analog Input | 4 | Voltage / Current | 145 × 35 × 140 | 0.32 |
| 1746-NI16I | Analog Input | 16 | Current | 145 × 35 × 140 | 0.36 |
| 1746-NO4I | Analog Output | 4 | 0–20 mA | 145 × 35 × 140 | 0.32 |
| 1746-IB16 | Digital Input | 16 | 24V DC | 145 × 35 × 140 | 0.32 |
| 1746-OB32 | Digital Output | 32 | 24V DC | 145 × 35 × 140 | 0.36 |
8. Recommended Popular Models (Same Brand)
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| 1756-L73 | Controller | — | 5V DC | 150 × 140 × 130 | 0.36 |
| 1769-L36ERM | Compact Controller | — | 24V DC | 120 × 90 × 70 | 0.30 |
| 1734-IE8C | Analog Input | 8 | 4–20 mA | 75 × 12 × 60 | 0.16 |
| 1769-OF8C | Analog Output | 8 | 0–10 V | 118 × 87 × 35 | 0.30 |
| 1756-EN2T | Ethernet Module | — | 5V DC | 150 × 140 × 130 | 0.32 |