A-B 1769-OB32 Digital Output Module

Allen-Bradley 1769-OB32 Digital Output Module (CompactLogix)

 

 

The Allen-Bradley 1769-OB32 is a 32-point 24V DC digital output module used in the CompactLogix / MicroLogix 1500 system. It provides high-density switching outputs for controlling field devices such as relays, solenoids, indicator lamps, and small loads in industrial automation systems.

Key Specifications

• Model: 1769-OB32
• Brand: Allen-Bradley (Rockwell Automation)
• Series: Compact I/O (1769)
• Product Type: Digital Output Module
• Output Channels: 32 points
• Output Type:
  • 24V DC sourcing transistor outputs
• Channel Grouping:
  • 2 groups × 16 outputs
• Operating Voltage:
  • 20.4 – 26.4 VDC
• Max Output Current:
  • Typically 0.5 A per point (derated by temperature/load)
• Isolation:
  • Optical isolation between field and backplane
• Mounting:
  • DIN rail (1769 Compact I/O system)

(verified from Rockwell Automation technical data)

What it does (simple explanation)

PLC Controller
↓
1769-OB32 Output Module
↓
Turns ON/OFF 32 field devices
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Motors / relays / lamps / solenoids

It acts like a high-density electronic switch bank controlled by the PLC.

Main Functions

• Outputs digital ON/OFF control signals
• Drives industrial loads (via relays/contactors if needed)
• Controls solenoid valves and indicators
• Executes PLC output commands
• Supports machine automation logic

Key Features

• 32-channel high-density output design
• 24V DC transistor (fast switching)
• LED status indicators per channel
• Grouped outputs for easy wiring (2 × 16)
• Compact DIN-rail module for space saving
• Integrated diagnostics and fault indication

Applications

• Packaging machines
• Conveyor systems
• Factory automation lines
• Relay control panels
• Solenoid valve control systems
• General industrial machine control