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The Allen-Bradley 1746-NO4I is an analog current output module designed for use in the SLC 500 modular PLC platform. It provides four independent output channels that convert digital control signals from the controller into precise analog current signals.
This module is commonly used to control field devices such as control valves, inverters, and actuators that operate with current signals. It serves as a key interface between digital control logic and real-world process equipment, ensuring smooth and accurate control of industrial processes.
The brand is widely used in industrial environments and is known for stable operation, modular design, and long service life.
The SLC 500 system is a modular PLC platform where different modules perform dedicated tasks. The 1746-NO4I is specifically designed to provide analog output functionality within this system.
| Parameter | Value |
|---|---|
| Model | 1746-NO4I |
| Module Type | Analog Current Output |
| Series | SLC 500 |
| Number of Channels | 4 |
| Output Signal Type | Current |
| Output Range | 0–20 mA (scalable) |
| Resolution | 14-bit |
| Conversion Method | R-2R Ladder |
| Output Accuracy | ±0.3% of full scale |
| Load Range | 0–500 Ω |
| Step Response | ≤2.5 ms |
| Backplane Current (5V) | 55 mA |
| Backplane Current (24V) | 195 mA |
| Isolation | Backplane isolation |
| 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) | 0.32 kg |
Delivers consistent and reliable current signals for precise process control.
14-bit resolution ensures smooth and accurate output transitions.
Quick update time allows real-time control adjustments.
Designed to operate reliably in harsh industrial environments.
Fully compatible with SLC 500 systems, requiring no complex setup.
| 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 | 2 In / 2 Out | Current | 145 × 35 × 140 | 0.35 |
| 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 |