A-B 1769-OF2 Analog Output Module

Allen-Bradley 1769-OF2 Analog Output Module (CompactLogix)

 

 

The Allen-Bradley 1769-OF2 is a 2-channel analog output module for the CompactLogix and MicroLogix 1500 platforms. It converts digital values from the PLC into analog current or voltage signals to control field devices such as variable frequency drives (VFDs), control valves, proportional valves, and process instruments.

Key Specifications

• Model: 1769-OF2
• Brand: Allen-Bradley (Rockwell Automation)
• Series: Compact I/O 1769
• Product Type: Analog Output Module
• Output Channels: 2 single-ended analog outputs
• Supported Output Signals:
  • ±10 VDC
  • 0–10 VDC
  • 0–5 VDC
  • 1–5 VDC
  • 0–20 mA
  • 4–20 mA
• Resolution: 14-bit (unipolar), 14-bit + sign (bipolar)
• Conversion Rate: 2.5 ms
• Mounting: 1769 Compact I/O system (DIN rail/panel mount)
• Compatible Controllers: CompactLogix and MicroLogix 1500

What it does (Simple Explanation)

PLC Controller
↓
1769-OF2 Analog Output Module
↓
Outputs analog voltage or current signal
↓
VFD / Control Valve / Process Instrument

The module converts PLC commands into precise analog signals that continuously regulate field devices.

Main Functions

• Outputs analog voltage and current signals
• Controls VFD speed references
• Drives proportional control valves
• Controls actuators and process equipment
• Provides precise analog control for industrial automation

Key Features

• 2 independently configurable analog output channels
• Supports both voltage and current outputs
• High-resolution 14-bit digital-to-analog conversion
• Fast 2.5 ms conversion time
• No field calibration required
• Compact modular design for 1769 systems
• Reliable performance for industrial process control

Applications

• Variable frequency drive (VFD) control
• Process control systems
• Chemical and water treatment plants
• Packaging and production machinery
• HVAC automation
• Pressure, flow, and temperature control

System Role

PLC CPU (e.g., 1769-L33ER)
↓
1769-OF2
↓
Analog signal (0–10 V / 4–20 mA)
↓
Control valve / VFD / Actuator

So it is:

• ❌ Not a PLC CPU
• ❌ Not a communication module
• ❌ Not a digital I/O module
• ✔ 2-channel analog output module