Allen-Bradley 1769-OF2 CompactLogix 2-Point Analog Output Module | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1769-OF2 is a 2-point analog output module designed for the CompactLogix and MicroLogix 1500 control systems. It supports both current (4–20 mA) and voltage (±10 V / 0–10 V) output modes, making it a versatile choice for process control, motion, and industrial automation applications. This guide covers technical specifications, compatible replacements, equivalent models, and selection criteria to help engineers and procurement teams make informed decisions.
Technical Specifications
- Part Number: 1769-OF2
- Manufacturer: Allen-Bradley / Rockwell Automation
- Series: CompactLogix 1769 Compact I/O
- Output Points: 2 (isolated)
- Output Type: Analog — Current (4–20 mA) and Voltage (±10 V, 0–10 V)
- Resolution: 12-bit (0–4095 counts)
- Update Rate: ~2 ms per channel
- Power Consumption: 75 mA @ 5 VDC; 0 mA @ 24 VDC
- Operating Temperature: 0 °C to 60 °C (32 °F to 140 °F)
- Storage Temperature: -40 °C to 85 °C
- Relative Humidity: 5–95% non-condensing
- Backplane Current Draw: 75 mA (5 V bus)
- Dimensions (H × W × D): 118 × 35 × 87 mm
- Weight: Approx. 180 g
- Certifications: UL, CE, CSA, RoHS
- Communication: Via CompactLogix backplane (no separate network required)
Compatible Replacement & Equivalent Models
The following modules are commonly evaluated as replacements or equivalents for the 1769-OF2. Compatibility depends on your controller platform, backplane, and software version.
- 1769-OF4 — 4-point analog output, same 1769 series; direct upgrade if additional channels are needed
- 1769-OF8C — 8-point current-only analog output; suitable for high-density current output applications
- 1769-OF8V — 8-point voltage-only analog output; ideal for voltage-driven actuators
- 1756-OF2 (ControlLogix) — Functionally equivalent for ControlLogix platforms; not backplane-compatible with CompactLogix 1769
- 1762-OF4 (MicroLogix 1200/1500) — 4-point analog output for MicroLogix platforms; verify firmware compatibility
- WAGO 750-556 — Third-party 2-channel analog output module; requires fieldbus adapter; suitable for non-Rockwell systems
- Beckhoff KL4002 — 2-channel analog output terminal; compatible with Beckhoff Bus Terminal systems only
Note: Third-party replacements require additional configuration and may not support all Logix Designer features such as module-defined data types.
Why Choose the Original Model
- Native Logix Designer Integration: Full support for Add-On Instructions (AOI), module-defined tags, and Studio 5000 configuration without custom mapping
- Guaranteed Backplane Compatibility: Plug-and-play with all 1769 CompactLogix controllers (L1x, L2x, L3x series)
- Dual Output Mode: Single module supports both current and voltage outputs — reduces SKU count and spare parts inventory
- Rockwell Firmware Updates: Eligible for official firmware and security patches via FactoryTalk Update Manager
- Long-Term Support: Active product with Rockwell Automation’s standard 5-year support lifecycle
- Proven Reliability: Widely deployed in food & beverage, oil & gas, and water treatment industries globally
Typical Applications
- Control valve positioners (4–20 mA current loop)
- Variable frequency drive (VFD) speed reference signals
- Proportional solenoid valve control
- Process temperature and pressure setpoint transmission
- Conveyor speed regulation in packaging lines
- Pump flow rate control in water/wastewater treatment
- Burner management and combustion air control
System Compatibility
- Compatible Controllers: CompactLogix L1x, L2x, L3x; MicroLogix 1500 (with 1769 expansion)
- Software: Studio 5000 Logix Designer v16.0 and above; RSLogix 5000 v16+
- Backplane: 1769 Compact I/O backplane only — not compatible with 1756 ControlLogix or 1734 POINT I/O chassis
- Maximum Modules per System: Up to 8 expansion modules per CompactLogix controller (controller-dependent)
- Firmware: Module firmware auto-updated via controller; no separate firmware file required
Selection Guide
Use the following criteria to determine whether the 1769-OF2 is the right module for your application:
- Output Channel Count: If 2 channels are sufficient, 1769-OF2 is optimal. For 4+ channels, consider 1769-OF4 or 1769-OF8C/V to reduce module slots used.
- Output Signal Type: Confirm whether your field devices require current (4–20 mA) or voltage (0–10 V / ±10 V). The OF2 supports both; the OF8C/V are signal-type specific.
- Controller Platform: Verify your controller is in the 1769 CompactLogix family. ControlLogix users should select 1756-series modules instead.
- Resolution Requirements: 12-bit resolution is standard for most process control. If higher precision is required, evaluate 1769-OF4 (also 12-bit) or third-party high-resolution alternatives.
- Budget vs. OEM: Third-party equivalents may reduce upfront cost but require additional engineering time for configuration and validation.
- Spare Parts Strategy: For facilities standardized on Rockwell, maintaining OEM spares ensures faster MTTR (Mean Time to Repair).
Quality Assurance & Sourcing
- All units sourced through authorized distributors or verified surplus channels
- Each module undergoes visual inspection and functional verification prior to shipment
- Original packaging, documentation, and firmware version recorded where available
- Traceability documentation available upon request for regulated industries
- New, refurbished, and tested-used conditions available — clearly labeled at time of order
- Export compliance screening performed for all international orders
How to Order
- Step 1: Confirm your controller model and firmware version (visible in Studio 5000 or on the controller label)
- Step 2: Verify available backplane slots and power budget in your existing system
- Step 3: Select condition: New OEM / Refurbished / Tested Surplus
- Step 4: Add to cart or contact us for bulk pricing and lead time confirmation
- Step 5: Provide PO number, shipping address, and any special documentation requirements at checkout
For urgent requirements or large-quantity orders, contact our technical sales team directly at [email protected] or call +0086 19859288691.
Replacement & Compatibility FAQ
Q: Can I replace a 1769-OF2 with a 1769-OF4 without changing my program?
A: Yes, with minor tag remapping. The OF4 uses the same module-defined data structure but adds two additional output channels. Update your I/O configuration in Studio 5000 and verify tag assignments.
Q: Is the 1769-OF2 compatible with MicroLogix 1100?
A: No. The 1769 Compact I/O expansion is only supported by MicroLogix 1500 and CompactLogix controllers. MicroLogix 1100 uses 1762-series I/O exclusively.
Q: Can I use a third-party analog output module in place of the 1769-OF2?
A: Physically, no — the 1769 backplane connector is proprietary. Third-party modules must connect via a separate fieldbus (e.g., EtherNet/IP adapter), which adds latency and configuration complexity.
Q: What is the difference between 1769-OF2 and 1769-OF2CI?
A: The 1769-OF2CI is a conformal-coated variant designed for harsh environments with higher humidity or corrosive atmospheres. Electrically and functionally identical.
Q: How do I verify the firmware version of my 1769-OF2?
A: In Studio 5000 Logix Designer, navigate to the I/O Configuration tree, right-click the module, and select “Properties” → “General” tab to view the firmware revision.
Q: Do you offer warranty on surplus or refurbished units?
A: Yes. All refurbished and tested-surplus units carry a 90-day functional warranty. New OEM units follow Rockwell Automation’s standard warranty terms.
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