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The 1769-OF2 is a specialized analog output module developed by Allen-Bradley for the CompactLogix control platform. This module provides two single-ended, high-precision voltage output channels using advanced Delta-Sigma conversion technology. It is designed to convert...
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The 1769-OF2 is a specialized analog output module developed by Allen-Bradley for the CompactLogix control platform. This module provides two single-ended, high-precision voltage output channels using advanced Delta-Sigma conversion technology. It is designed to convert digital control instructions from the PLC into precise analog voltage signals for industrial field devices.
The module supports both unipolar and bipolar output modes, delivering 14-bit resolution for unipolar signals and 14-bit plus sign for bipolar applications, ensuring high-accuracy signal generation for motion control, valve positioning, and process instrumentation. This level of resolution allows stable and repeatable analog control in demanding automation environments.
Housed in a compact and rugged industrial form factor, the 1769-OF2 is built to withstand electrically noisy environments. It features reinforced electrical isolation with a 500V AC isolation rating, protecting both the controller backplane and connected field devices. The module also maintains efficient thermal performance and low power consumption, making it ideal for high-density control cabinets installed on DIN rail or direct panel mounts.
| Parameter | Specification |
|---|---|
| Model Identification | 1769-OF2 |
| Output Configuration | 2 Single-ended channels |
| Conversion Technology | Delta-Sigma |
| Resolution | 14-bit (unipolar); 14-bit + sign (bipolar) |
| Conversion Speed | 2.5 ms (max for all channels) |
| Power Requirements | 120 mA at 5.1V DC |
| Thermal Output | 2.63 W maximum |
| Isolation Rating | 500V AC / 710V DC for 1 minute (bus to output group) |
| Working Voltage | 30V AC / 30V DC |
| Dimensions | 11.8 cm × 3.5 cm × 8.7 cm |
Motion Control
Provides accurate analog command voltages for servo drives, positioning controllers, and actuator systems requiring stable analog control signals.
Process Regulation
Generates reference signals for variable frequency drives (VFDs), proportional control valves, and analog instrumentation used in continuous industrial processes.
System Integration
Acts as a reliable analog signal interface within PLC-based automation systems, enabling precise control output from CompactLogix controllers to field equipment.
Is the 1769-OF2 compatible with all CompactLogix processors?
The module is designed for the 1769 CompactLogix platform. Compatibility depends on the controller model and the available power supply capacity. Ensure the system power budget can support the module’s 120 mA current draw at 5.1V DC.
How does Delta-Sigma conversion benefit the output signal?
Delta-Sigma conversion improves linearity, signal stability, and noise reduction compared with traditional successive-approximation converters. This results in smoother analog outputs and more precise control, particularly important in long-term industrial automation operations.
