1769-OF8C Technical specifications
| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Output Module |
| Product Line | CompactLogix |
| Part Number | 1769-OF8C |
| Weight | 1.00 lbs (0.45 kg) |
| Number of Outputs | 8 Outputs |
| Output Type | Single-Ended Output |
| Output Current Ranges | 0 to 20 mA or 4 to 20 mA |
| Bus Current Draw at 5V DC | 145 mA |
| Bus Current Draw at 24V DC | 185 mA |
| Max. Heat Dissipation | 2.69 Watts |
| Max. Conversion Rate for All Channels | 5 ms |
| Open-Circuit Protection | Supported |
| Short-Circuit Current | Supported |
| Max. Short-Circuit Protection | 21 mA |
| Output Overvoltage Protection | Supported |
| Slot Width | 1 Slot |
| Mounting Options | DIN Rail or Panel |
Overview
The Allen-Bradley 1769-OF8C is a specialized analog output module designed for the CompactLogix and 1769 Compact I/O platforms by Rockwell Automation. Unlike standard mixed-signal modules, the 1769-OF8C is dedicated exclusively to current outputs, providing 8 independent channels in a single-width package. This makes it the ideal solution for applications requiring precise control of multiple control valves, variable frequency drives (VFDs), or other current-driven field devices.
Key Features & Benefits
- High-Density Current Output: Features 8 independent analog output channels, all configured for current signals. This high density maximizes panel space efficiency for current-loop applications.
- 16-Bit Precision: Delivers high-resolution 16-bit digital-to-analog conversion, ensuring extremely accurate and smooth control of field devices.
- Open Loop Detection: A standout feature of the 1769-OF8C is its ability to detect open loop (wire break) conditions. The module can alert the controller if a field wire is disconnected, allowing for immediate fault handling and improved safety.
- Versatile Current Ranges: Supports both 0 to 20 mA and 4 to 20 mA (with a range up to 21 mA for saturation) output ranges, configurable via software.
- Diagnostic LEDs: The front-mounted OK LED indicates module health and can flash to indicate specific fault conditions, such as open loops or configuration errors, simplifying troubleshooting.
- Robust Design: Built to operate in temperatures from 0°C to 60°C, ensuring stability in harsh industrial environments.
Applications
The Allen-Bradley 1769-OF8C is extensively used in:
- Process Control: Driving multiple control valves and positioners via 4-20mA signals.
- Motor Control: Sending speed reference signals to multiple VFDs.
- Actuator Control: Managing analog actuators in water/wastewater treatment.
- Data Acquisition: Interfacing with current-input chart recorders.
Important Installation Note:
The 1769-OF8C module does not include the terminal block. You must order the 1769-RTBN10 (screw type) or 1769-RTBN10P (spring type) separately for wiring. Ensure the external 24V DC power supply is correctly connected for current operation.
Why Choose This Module?
Our 1769-OF8C units are sourced from authorized distributors, guaranteeing genuine Allen-Bradley / Rockwell Automation quality. Its specialized current-output design and open-loop detection make it a superior choice for critical process control loops. We provide fast shipping, technical support, and competitive pricing.
Optimize your CompactLogix current control with the Allen-Bradley 1769-OF8C.
Compact 1769-OF8C Analog Output Module Installation Instructions
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