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The Allen-Bradley 1746-NIO4V is a combination analog I/O module designed for use within the SLC 500 modular PLC system. It integrates both analog input and analog output capabilities into a single module, with a focus on voltage signal processing.
This module provides a total of four channels, typically configured as two analog inputs and two analog outputs. It is specifically designed to handle voltage-based signals, making it suitable for applications where sensors and actuators operate with voltage ranges rather than current loops.
The 1746-NIO4V serves as a compact interface between field devices and the PLC processor, enabling both monitoring and control within a single hardware unit.
The brand is widely recognized in industrial sectors for its durable hardware and stable performance in long-term automation applications.
The SLC 500 platform is a modular control system. The 1746-NIO4V is designed to reduce system complexity by combining analog input and output functions in a single slot, particularly for voltage-based applications.
| Parameter | Value |
|---|---|
| Model | 1746-NIO4V |
| Module Type | Analog Combination I/O (Voltage) |
| Series | SLC 500 |
| Input Channels | 2 |
| Output Channels | 2 |
| Input Signal Type | Voltage |
| Input Range | ±10 V DC |
| Output Signal Type | Voltage |
| Output Range | ±10 V DC |
| Resolution | 16-bit |
| Conversion Method | Sigma-Delta |
| Input Impedance | ≥1 MΩ |
| Output Load | ≥1 kΩ |
| 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 |
Combines voltage input and output in a single module, reducing system hardware requirements.
16-bit resolution ensures accurate measurement and control of analog signals.
Single-slot structure saves space in control cabinets.
Designed for industrial environments with strong noise resistance.
Reduces wiring and configuration complexity by combining functions.
| 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-NO4V | Analog Output | 4 | Voltage | 145 × 35 × 140 | 0.33 |
| 1746-NIO4I | Analog I/O | 4 | Current | 145 × 35 × 140 | 0.35 |
| Model | Type | Channels | Voltage | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 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 |