Allen-Bradley 1769-OF5 CompactLogix Analog Output Module

Product Overview

The 1769-OF5 is a high-performance analog output expansion module for Allen-Bradley CompactLogix and MicroLogix 1500 systems. Featuring a 4+1 channel configuration, it provides four configurable voltage/current channels plus one dedicated current-only output, enabling mixed-signal control in a single slot.

Technical Specifications

Functional Integration

• Control Flexibility: First four channels software-configurable for voltage or current.

• High Precision: 15-bit resolution for granular control in sensitive applications.

• System Protection: Open-circuit detection for current outputs; short-circuit protection for voltage outputs.

• Application: Ideal for final control elements in automated loops, such as chemical dosing or precision heating.

Installation Best Practices

• Cabling: Use shielded twisted-pair (STP) cables; ground shield at module end.

• Removable Terminal Block (RTB): Allows module replacement without disconnecting field wiring.

• Slot Placement: Must be within 8 slots of the power supply to ensure signal integrity.

Common Technical Questions

What is the difference between the 1769-OF5 and 1769-OF4?
The OF4 has four identical channels, while the OF5 adds a fifth dedicated current output, providing higher density and mixed signal capability.

Does the 1769-OF5 support "Hold Last State" on CPU fault?
Yes. The module can hold the last output value or transition to a user-defined "Safe Value" if the controller enters Program Mode or experiences a fault.