1794-OB32P Allen-Bradley FLEX I/O DC Sourcing Output Module

Overview

The Allen-Bradley 1794-OB32P is a 32-point DC sourcing digital output module from the FLEX I/O family. It provides reliable and efficient signal output control for distributed I/O applications, supporting up to 4 A total output current. Designed for high-density installations, the module offers integrated electronic protection, compact DIN-rail mounting, and long-term operational stability for industrial control systems.

Technical Specifications

• Manufacturer: Allen-Bradley

• Product Line: FLEX I/O Series

• Model / Part Number: 1794-OB32P

• Product Type: Digital Output Module

• Number of Outputs: 32 sourcing-type outputs

• Nominal Output Voltage: 24V DC

• On-State Voltage Range: 10V DC (min), 24V DC (nom), 31.2V DC (max)

• Output Current Rating: 4 A total (8 outputs @ 0.5 A each)

• Output Type: Current sourcing (PNP)

• FlexBus Current Draw: 60 mA @ 5V DC

• Power Dissipation (Max): 3.3 W @ 31.2V DC

• Thermal Dissipation (Max): 11.2 BTU/hr @ 31.2V DC

• Protection: Electronic short-circuit and overcurrent protection

• Mounting Type: DIN Rail

• Dimensions (L x W x H): 9.4 cm × 6.9 cm × 9.4 cm

• Weight: 0.085 kg

• Operating Voltage: 10–31.2V DC continuous

• Isolation: Field-to-system isolation, no isolation between individual channels

• Status Indicators: Individual output status via LED indicators

• Fusing: Electronic, non-replaceable, resettable protection circuit

Key Features

• 32 sourcing outputs for compact, high-density digital control

• Built-in electronic short-circuit protection ensures reliable operation

• Wide DC voltage range for flexible application compatibility

• LED indication for simplified system diagnostics and monitoring

• Compact, lightweight module designed for efficient DIN-rail mounting

• Fully compatible with FLEX I/O communication adapters and terminal bases

Application Scenarios

• Discrete output control in automated manufacturing systems

• Distributed I/O systems using ControlLogix or CompactLogix controllers

• Motor starter and solenoid valve actuation

• Process control applications requiring compact DC output expansion

FAQs

Q: What type of output does the 1794-OB32P provide?
A: It provides sourcing (PNP) digital outputs suitable for 24V DC control applications.

Q: How are the outputs protected?
A: Each output is electronically protected against short circuits and overcurrent conditions.

Q: What is the recommended power supply voltage?
A: The nominal operating voltage is 24V DC, with a range between 10V and 31.2V DC.