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Allen-Bradley 1769-OF5 CompactLogix 5-Channel Analog Output Module

Product Overview

The 1769-OF5 is a high-density analog output expansion module designed for the Allen-Bradley CompactLogix and MicroLogix 1500 platforms. It features a unique 4+1 channel architecture: four universal channels configurable for either voltage or current, and one dedicated current-only output channel. This configuration allows engineers to manage mixed-signal field devices within a single compact slot, optimizing cabinet space and reducing system overhead.

Technical Specifications

  • Module Type: Analog Output (Voltage/Current mixed)

  • Channels: 5 Total (4 Configurable + 1 Dedicated Current)

  • Voltage Output Ranges: ±10V DC, 0–10V DC, 0–5V DC, 1–5V DC

  • Current Output Ranges: 0–20 mA, 4–20 mA

  • Digital-to-Analog Converter (DAC): Resistor String

  • Resolution: 15 bits (unipolar); 14 bits plus sign (bipolar)

  • Full Scale Ranges: 0–21 mA, 0–10.5V DC, ±10.5V DC

  • Conversion Rate: 2.5 ms per channel (all channels concurrently)

  • Step Response: 2.9 ms to 95% of full scale

  • Output Impedance: < 15 Ω (Voltage Mode) / > 1 MΩ (Current Mode)

  • Load Range: 0–500 Ω (Current) / > 1000 Ω (Voltage)

  • Backplane Current Draw: 120 mA @ 5.1V DC; 160 mA @ 24V DC

  • Heat Dissipation: 3.61 Watts Max

  • Power Supply Distance Rating: 8 Modules (Must be within 8 slots of a 1769 power supply)

  • Dimensions: 118 x 35 x 87 mm (H x W x D)

Functional Integration and Protection

The 1769-OF5 is engineered for high-precision control loops. It utilizes software-configurable parameters via RSLogix 500 or Studio 5000, eliminating the need for physical jumpers.

  • Safety States: Supports "Hold Last State" or "User-Defined Safe Value" on controller fault or Program Mode transition.

  • Diagnostics: Built-in open-circuit detection for current loops and short-circuit protection for voltage outputs, reported directly to the controller's status bits.

  • Wiring: Includes a Removable Terminal Block (RTB) to facilitate quick hardware replacement without disturbing field wiring.

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