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- Allen Bradley
- 1746-NIO4I
- PLC Module/Rack
- USA
- 145 × 35 × 140 mm
- 0.35kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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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-NIO4I Detailed Technical Overview
1. Product Overview
The Allen-Bradley 1746-NIO4I is a combination analog I/O module designed for modular PLC systems in the SLC 500 platform. It integrates both input and output functionality into a single module, making it suitable for applications where space and slot availability are limited.
This module provides four total channels, typically configured as two analog inputs and two analog outputs. It allows the control system not only to monitor analog signals from field devices but also to send control signals back to actuators, forming a compact solution for closed-loop control systems.
Because of its hybrid functionality, it is often selected in applications where both sensing and control are required without adding multiple modules.
2. Brand Information
- Brand: Allen-Bradley
- Industry: Industrial automation and control systems
- Product Type: Analog combination I/O module
The brand is widely used in industrial environments due to its stable performance, modular design, and long lifecycle in automation systems.
3. Product Series
- Series: SLC 500
- Category: Analog I/O module
- Module Type: Combination (Analog Input + Output)
The SLC 500 system allows flexible module configuration. The 1746-NIO4I stands out by combining input and output capabilities, reducing system complexity and saving space in the control cabinet.
4. Technical Parameters
Core Specifications Table
| Parameter | Value |
|---|---|
| Model | 1746-NIO4I |
| Module Type | Analog Combination I/O |
| Series | SLC 500 |
| Input Channels | 2 |
| Output Channels | 2 |
| Input Signal Type | Voltage / Current |
| Input Range | ±10 V DC / 0–20 mA / 4–20 mA |
| Output Range | 0–20 mA |
| Resolution | 16-bit |
| Conversion Method | Sigma-Delta |
| Backplane Current (5V) | 55 mA |
| Backplane Current (24V) | 145 mA |
| Isolation | 500 V AC |
| Step Response | ~50–100 ms (input), <5 ms (output) |
| 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) | 0.35 kg |
5. Product Functions and Applications
Functional Description
- Acquires analog signals from field sensors
- Outputs analog control signals to actuators
- Converts analog signals into digital data for PLC processing
- Supports closed-loop control within a single module
- Provides stable signal handling with noise filtering and isolation
Typical Applications
- Closed-loop control systems (PID control loops)
- Process industries such as chemical and water treatment
- Industrial automation lines requiring both sensing and actuation
- Temperature, pressure, and flow control systems
- Equipment retrofitting where space is limited
6. Product Advantages
1. Integrated I/O Capability
Combines input and output functions in one module, reducing the number of required slots.
2. Space Optimization
Ideal for compact control panels where space is limited.
3. High Measurement Accuracy
16-bit resolution ensures reliable data acquisition and control precision.
4. Flexible Signal Support
Supports both voltage and current inputs, increasing compatibility with field devices.
5. Reduced Wiring Complexity
Fewer modules mean simplified wiring and system design.
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-NI8 | Analog Input | 8 | Voltage / Current | 145 × 35 × 140 | 0.34 |
| 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 |
8. Recommended Popular Models (Same Brand)
Popular Automation Modules
| Model | Type | Channels | Voltage | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1756-L71 | Controller | — | 5V DC | 150 × 140 × 130 | 0.35 |
| 1769-L33ER | Compact Controller | — | 24V DC | 120 × 90 × 70 | 0.28 |
| 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 |