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1769-OF4 | Allen-Bradley | 4-Port Analog Voltage/Current I/O
The 1769-OF4 is a 4-channel analog output module from the Allen-Bradley Compact I/O series. Designed for high-accuracy process control, it provides 15-bit resolution for voltage and current signals, ensuring rapid response times and robust electrical protection for CompactLogix and MicroLogix 1500 controllers.
Description
Allen-Bradley 1769-OF4 CompactLogix 4-Channel Analog Output Module
The 1769-OF4 is a high-resolution analog expansion module for CompactLogix and MicroLogix 1500 systems, offering four precision channels for voltage and current signal generation.
Technical Operational Overview
The 1769-OF4 serves as a high-performance interface that converts digital CPU data into precise analog signals for field device control. This module specifically caters to the CompactLogix and MicroLogix 1500 platforms, allowing operators to drive actuators, valves, and motor controllers with extreme accuracy. By providing four independent channels, the module enables multi-loop control within a single compact footprint.
Each channel on the 1769-OF4 operates with 15-bit resolution plus sign, which translates to superior granularity in signal output. Furthermore, the module supports simultaneous voltage and current configurations across its ports, handling ranges such as 0-10V, ±10V, and 4-20mA. To ensure system longevity, Allen-Bradley integrated robust overvoltage and short-circuit protection into the hardware. This protection prevents field-side electrical faults from propagating back to the sensitive PLC backplane, thereby reducing the risk of costly downtime.
Key Technical Characteristics
- Versatile Signal Support: Outputs standard industrial signals including ±10V DC, 0-10V DC, 0-20mA, and 4-20mA.
- 15-Bit Digital-to-Analog Conversion: Delivers fine-tuned control increments for highly sensitive process applications.
- Rapid Signal Processing: Features a step response time of less than 2.9ms, ensuring real-time reaction for dynamic automated systems.
- Galvanic Backplane Isolation: Protects the core controller through 30V AC/30V DC working voltage isolation between the field and the bus.
- Low Noise Output: Maintains a minimal ripple of ±0.05%, providing clean signals to frequency drives and recorders.
- Flexible Mounting: Installs easily on a DIN rail or via panel mounting, provided it stays within the designated power supply distance (8 modules max).
Product Specifications
| Specification | Details |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Model Number | 1769-OF4 |
| Module Type | Analog Output (Compact I/O) |
| Output Channels | 4 Single-Ended |
| Resolution | 15 Bits plus sign |
| Accuracy | ±0.5% full scale at 25°C |
| Power Consumption | 120mA at 5V DC / 120mA at 24V DC |
| Dimensions | 3.5 x 11.8 x 8.7 cm |
| Operating Temp | 0°C to 60°C (32°F to 140°F) |
Industrial Applications
Automation professionals typically deploy the 1769-OF4 in environments requiring continuous variable control. Primary use cases include:
- Motion Control: Providing speed reference signals to Variable Frequency Drives (VFDs).
- Fluid Management: Adjusting the position of proportional control valves in water treatment or chemical processing.
- Data Logging: Driving analog pen recorders or external displays for real-time telemetry monitoring.
Additional information
| Weight | 0.9 kg |
|---|---|
| Country of Origin | USA |
| Dimension | 3.5 x 13 x 14.5 cm |
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