Product Details
Overview
The Allen-Bradley 1769-OF8C is an 8-channel compact analog output module for CompactLogix systems. It delivers precise current signals with high reliability and protection features suitable for industrial control applications.
Technical Specifications
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Manufacturer: Allen-Bradley
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Series / Product Line: CompactLogix
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Model / Part Number: 1769-OF8C
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Module Type: 8-Point Analog Current Output Module
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Outputs: 8 single-ended
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Output Current Ranges: 0–20 mA, 4–20 mA
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Full Scale Range: 0–21 mA, 3.2–21 mA
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Resolution: 16-bit unipolar; 15.59–15.91 bits depending on range
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Bus Current Draw: 5 VDC @ 145 mA, 24 VDC @ 185 mA
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Maximum Heat Dissipation: 2.69 W
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Conversion Rate (All Channels): 5 ms
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Step Response: < 2.9 ms
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Load Resistance: Resistive 0–500 Ω, Inductive max 0.1 mH
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Accuracy: ±0.35% full scale @ 25°C; temperature drift ±0.0058% per °C
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Output Ripple: ±0.05% @ 0–50 kHz
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Nonlinearity: ±0.05%
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Repeatability: ±0.05%
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Module Error / Offset Error: ±0.55%
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Open / Short-Circuit Protection: Yes, max 21 mA short-circuit
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Overvoltage Protection: Yes
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Rated Working Voltage: 30 V AC / 30 V DC
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Isolation Voltage: 500 V AC / 710 V DC for 1 min, output to bus
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Weight: 0.60 lb (270 g)
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Dimensions: 118 x 35 x 87 mm (H x W x D), height with mounting tabs 138 mm
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Slot Width: 1
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Mounting: DIN rail or panel mount
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Compatible Power Supplies: 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4
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Optional 24V DC Class 2 Supply Voltage Range: 20.4–26.4 VDC
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Power Supply Distance Rating: Up to 8 modules
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Terminal / Retaining Screw Torque: 0.68 N·m / 0.46 N·m
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Wire Size: Solid 22–14 AWG, Stranded 22–16 AWG, Cu-90°C
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Replacement Accessories: Terminal Block 1769-RTBN18, Door Label 1769-RL2, Door 1769-RD
Key Features
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8 high-precision analog outputs with multiple current ranges
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Full protection: open/short circuit, overvoltage, and transient suppression
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High-resolution output with minimal ripple and low drift
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Compact size, suitable for DIN rail or panel mounting
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Compatible with multiple CompactLogix power supplies and configurations
Application Scenarios
The 1769-OF8C is ideal for:
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Driving field devices with analog current outputs, such as valves, actuators, and transducers
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High-accuracy process control applications requiring stable outputs
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Compact control cabinets with limited space for I/O modules
Similar Model Comparison
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1769-OF8C – 8-channel analog current output, high-density
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1769-OF4C – 4-channel analog output, smaller footprint
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1769-OF16 – 16-channel analog output module for larger systems
FAQs
Q: Does the module require field calibration?
A: No field calibration is required; outputs are factory calibrated.
Q: What protection features are included?
A: Open/short-circuit, overvoltage, and spike suppression.
Q: Which power supplies are compatible?
A: 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4 with up to 8 modules per supply.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.