1769-OB32T | Allen-Bradley 32-Channel Sourcing Output Module Supplier

Introduction to the 1769-OB32T

When your automation system requires dependable discrete output control, the 1769-OB32T from Allen-Bradley offers a robust solution. As a 1769 Compact I/O module, it provides thirty-two 24V DC sourcing output channels engineered for high-density applications. This module integrates seamlessly with CompactLogix controllers and MicroLogix 1500 systems, making it a versatile choice for industrial environments.

Key Features & Technical Specifications

• The 1769-OB32T features 32 sourcing output channels with a nominal voltage of 24V DC.
• It supports an ON-state voltage range from 10.2 VDC to 26.4 VDC, ensuring compatibility with varied power supplies.
• Each output point can handle a maximum continuous current of 2.0 A, while the module supports up to 4.0 A total.
• The module draws 220 mA from the backplane at 5V DC and has a power supply distance rating of 8 modules.
• It operates within a temperature range of 0 to 60 °C (32 to 140 °F) and can be stored from -40 to 85 °C (-40 to 185 °F).
• The 1769-OB32T is rated for vibration up to 5g at 10 to 500 Hz and operating shock of 30 g.

A standout specification is the module's ability to deliver up to 2.0 A per point continuously, which supports demanding output loads without derating. This high current capacity reduces the need for external relays in many applications.

Applications & Use Cases

In manufacturing lines, the 1769-OB32T excels at controlling solenoid valves, motor starters, and indicator lights. Its 32-point density allows engineers to consolidate I/O in a single slot, saving panel space. For example, in a packaging machine, this module can drive multiple actuators simultaneously while maintaining reliable switching. Additionally, its sourcing output configuration simplifies wiring in systems with common positive voltage.

Installation & Setup

Mounting the 1769-OB32T is straightforward using a DIN rail, as specified in the data. The module occupies a single slot and connects directly to the 1769 backplane or MicroLogix 1500 expansion slot. Use stranded wire from 22 to 16 AWG for field wiring, and torque the terminal block screws to 0.68 Nm. Ensure the module is placed within 8 modules of the power supply to maintain proper power distribution.

Maintenance & Reliability

To maximize uptime, periodically inspect the 1769-OB32T for dust accumulation and verify that all terminal connections remain tight. The open-type enclosure allows for natural cooling, but ensure adequate airflow around the module. Given its solid-state design, the module offers long service life with minimal wear compared to electromechanical alternatives.

Compatibility & Integration

The 1769-OB32T is compatible with 1769 CompactLogix controllers and MicroLogix 1500 controllers, as stated in the specifications. It integrates into existing 1769 I/O assemblies without additional adapters. For systems requiring high-density output, this module pairs well with 1769 power supplies and other Compact I/O modules.

Troubleshooting & Common Issues

If an output channel fails to energize, first verify the ON-state voltage is within the 10.2 to 26.4 VDC range. Check the load current does not exceed 2.0 A per point or 4.0 A per module. For intermittent operation, inspect wiring for loose connections and ensure the backplane current draw does not exceed the power supply's capacity. Refer to the official Allen-Bradley documentation for detailed diagnostics.

FAQ about the 1769-OB32T

Q: What is the maximum continuous output current per module for the 1769-OB32T?

A: The maximum continuous output current per module is 4.0 A, as specified in the data.

Q: Can the 1769-OB32T be used with MicroLogix 1500 controllers?

A: Yes, the module is compatible with MicroLogix 1500 controllers, in addition to 1769 CompactLogix systems.

Q: What is the power supply distance rating for this module?

A: The power supply distance rating is 8 modules, meaning it must be placed within 8 modules of the power supply.

Q: What wire size is recommended for field wiring?

A: Use stranded wire from 22 to 16 AWG for proper termination.

Q: Does the 1769-OB32T support sinking or sourcing outputs?

A: The module is a sourcing output module, as indicated in the product description.

Product Support & Availability

The 1769-OB32T is a current product and available from Petro Auto Tech. In stock and ready to ship, this module can be ordered with confidence. For lifecycle status or technical inquiries, contact Petro Auto Tech for assistance.