Product Overview

The Allen-Bradley 1769-OF8C is a high-performance, 8-channel analog current output module designed for the Rockwell Automation CompactLogix and MicroLogix 1500 control platforms. Engineered to facilitate precise control in demanding industrial environments, this module translates digital data from your PLC processor into accurate 0–20 mA or 4–20 mA analog current signals. Whether you are managing complex proportional valves, motor speed drives (VFDs), or delicate chemical dosing pumps, the 1769-OF8C provides the stability and 16-bit resolution required for high-fidelity process automation.

As industrial processes evolve toward greater efficiency, the need for reliable, high-density analog control becomes paramount. The 1769-OF8C addresses this by offering individual channel configuration, comprehensive diagnostic features, and seamless integration into the Compact I/O system, making it an essential component for engineers and procurement specialists looking to optimize their control infrastructure.

Key Features

• High-Resolution Output: Features 16-bit resolution to ensure smooth and accurate control of analog end-devices.

• Multi-Channel Density: Provides 8 independent, individually configurable current output channels in a single compact module.

• Advanced Diagnostics: Includes built-in open-loop detection to immediately notify the controller of broken wire conditions, minimizing downtime.

• Flexible Signal Ranges: Supports industry-standard 0–20 mA and 4–20 mA signals, with configurable output limits to prevent system over-driving.

• Robust Build: Designed for industrial duty, featuring short-circuit protection (up to 21 mA) and excellent thermal management characteristics.

• Seamless CompactLogix Integration: Direct bus compatibility ensures fast data transfer and straightforward setup within the Studio 5000 or RSLogix 5000 environment.

Technical Specifications

Model Configuration Explanation

The 1769-OF8C nomenclature identifies its precise function: the "1769" series defines it as Compact I/O for the CompactLogix platform. "OF" indicates an Output Function, while "8C" denotes that the module possesses 8 channels dedicated specifically to Current (C) signals. This naming convention is designed to help technicians quickly identify the module type within a rack or documentation without needing to cross-reference every part number.

Typical Applications

• Water & Wastewater Treatment: Providing precise command signals for chemical dosing pumps and motorized valve actuators.

• Food & Beverage: Managing flow and temperature regulation for complex mixing stations, pasteurizers, and bottling lines.

• Oil, Gas, and Chemical: Controlling proportional valves and positioners in continuous flow, high-pressure environments.

• Manufacturing & Packaging: Delivering reference signals to multiple Variable Frequency Drives (VFDs) for tension control and conveyor speed synchronization.

• Metals & Mining: Regulating heavy-duty hydraulic proportional valves used in crushing and material refinement processes.

• Textile Industry: Monitoring and managing precise tension control systems to ensure consistent material quality during high-speed spinning.

System Compatibility

The 1769-OF8C is natively compatible with all CompactLogix 1769-based controllers and MicroLogix 1500 systems. It requires a compatible power supply module (such as the 1769-PA2 or 1769-PB2) that provides sufficient current to support the module’s 145 mA/185 mA draw. Because it is part of the Compact I/O family, it supports flexible mounting configurations, allowing it to be placed adjacent to the CPU or on remote banks connected via communication cables.

Installation Guidelines

• DIN Rail Mounting: Ensure the DIN rail latches on the module are in the closed position. Press the module firmly against the 35 mm DIN rail until the latches lock it into place.

• Panel Mounting: When panel mounting is preferred, use two M4 or #8 panhead screws. Use the module as a physical template to mark drill holes, ensuring that the module sits flush against the grounded metal panel to maintain electromagnetic compatibility (EMC).

• Wiring: Always use shielded twisted-pair cabling for analog current loops to minimize the impact of EMI/RFI noise in the factory environment.

Product Advantages

• Superior Process Stability: The 16-bit resolution translates to finer control over physical processes, reducing the variance in output products.

• Reduced Maintenance: With onboard diagnostic capabilities like open-loop detection, faults are identified in real-time, allowing for "predictive" rather than "reactive" maintenance.

• Ease of Commissioning: The module is highly configurable, allowing engineers to set channel limits and signal types via software, reducing the need for manual hardware adjustments.

Ordering Information

When you buy 1769-OF8C modules, you are choosing an industry-standard solution for analog control. Whether you are looking for the 1769-OF8C price for a new project or an emergency replacement, we keep this unit In Stock to minimize your downtime. As your professional 1769-OF8C supplier, we guarantee that you will receive Genuine Allen-Bradley Parts that meet the highest standards of the Rockwell Automation ecosystem.

Logistics and Shipping

We understand the urgency of industrial maintenance. All orders for the 1769-OF8C are shipped using professional anti-static industrial packaging. This ensures the unit is protected against electrostatic discharge (ESD) and physical shocks during international transit. We offer expedited shipping from our Xiamen facility to ensure your Industrial Automation Spare Parts arrive at your site in optimal condition.

Why Choose Maxwell PLC

At Maxwell PLC, we leverage 30 years of experience in the assembly, testing, and distribution of industrial automation systems. We maintain deep, long-standing relationships with original manufacturers and authorized distributors, ensuring that our inventory consists of verified, genuine equipment. Before any module leaves our warehouse, our technicians perform rigorous functional testing and verification. We provide detailed test reports for every unit, giving our clients the confidence that the parts they receive are ready for immediate deployment in critical systems.

Frequently Asked Questions

• Is the 1769-OF8C an isolated module?

  The 1769-OF8C provides channel-to-backplane isolation, ensuring that electrical noise does not travel from the field devices back to the controller's main processing unit.

• What happens if one output loop breaks?

  The module features open-loop detection; if a wire breaks in the current loop, the module can trigger a status bit in the PLC, allowing your logic to catch the fault immediately.

• Does the 1769-OF8C support 4-20 mA and 0-20 mA?

  Yes, it is fully configurable via the software, allowing you to choose between standard 0-20 mA or 4-20 mA ranges for every individual channel.

• Can I use this for non-Allen-Bradley systems?

  The 1769-OF8C is proprietary to the Allen-Bradley Compact I/O platform and is not designed for direct integration with non-Rockwell PLCs.

• Is the 1769-OF8C still available?

  While some legacy models face EOL, we maintain a reliable supply of the 1769-OF8C and can typically ship units from stock immediately.

• Do you provide calibration data with the module?

  Yes, each unit undergoes a functional test, and we can provide verification reports upon request.

• What is the response time of the analog outputs?

  The module has a maximum update time of 5 ms for all 8 channels, ensuring high-speed process response.

• Is the module susceptible to electrical noise?

  Like all analog components, it is sensitive to EMI. We strongly recommend using shielded cables and proper grounding practices.

• Does it require an external 24V DC power supply?

  Yes, the module requires both 5V DC (from the backplane) and 24V DC (field power) to drive the current loops.

• Why should I buy from an independent supplier like Maxwell PLC?

  We offer specialized support, competitive pricing, and rigorous pre-shipment testing that generic retailers often do not provide.

Related Models

• 1769-IF8C: 8-Channel Analog Current Input Module

• 1769-OF4C: 4-Channel Analog Current Output Module

• 1769-IF4I: 4-Channel Isolated Analog Input Module

• 1769-L33ER: CompactLogix 5370 Controller

• 1769-PA2: Compact I/O Power Supply

• 1769-ECR: Compact I/O End Cap

• 1769-IQ32: 32-Channel Digital Input Module