1762-OB16 | Allen-Bradley Discrete Output Module Supplier

What Is the 1762-OB16?

When your MicroLogix controller needs additional output channels, the 1762-OB16 delivers a straightforward solution. This discrete output module from Allen-Bradley offers 16 solid-state sourcing outputs at 24VDC. It integrates seamlessly with MicroLogix 1100, 1200, and 1400 controllers, making it a flexible choice for expanding system I/O.

Manufactured by Rockwell Automation, the 1762-OB16 is part of the MicroLogix expansion I/O family. It provides reliable control for actuating devices such as solenoids, motor starters, pilot lamps, and relay coils. With a compact design and DIN rail mounting, this module fits easily into existing panels.

Key Features and Technical Specs

• 16 sourcing outputs in one group (Outputs 0…15).
• Output voltage range: 20.4 to 26.4 VDC.
• Signal delay: 0.1 ms on, 1.0 ms off.
• Bus current draw: 175 mA at 5V DC (0.88W).
• Maximum surge current: 2.0 A per point.
• Mounting: DIN rail.
• Maximum operating altitude: 2000 meters.

One distinctive spec is the signal delay of 0.1 ms on and 1.0 ms off. This fast response ensures precise control in time-sensitive applications, reducing lag between command and actuator movement.

Applications and Use Cases

The 1762-OB16 is ideal for automating discrete processes. For example, in a packaging line, it can energize solenoid valves to control pneumatic cylinders. Similarly, it can drive pilot lamps for status indication or activate motor starters for conveyor belts. Because it offers 16 outputs in a single group, wiring is straightforward and reduces panel clutter.

In a manufacturing environment, this module helps expand the I/O count of MicroLogix controllers without requiring a separate network. This keeps system architecture simple and cost-effective.

Installation and Setup

Mount the 1762-OB16 on a DIN rail in a well-grounded enclosure. Ensure adequate clearance around the module for ventilation—at least 2 inches (50.8 mm) on all sides. For high-vibration environments, use a DIN rail end anchor to secure the module.

Power the module externally with 24VDC within the 20.4 to 26.4 VDC range. Connect the sourcing outputs to your load devices, observing polarity. The module supports up to four expansion I/O modules with MicroLogix 1100, six with MicroLogix 1200, and seven with MicroLogix 1400.

Maintenance and Reliability

Regularly inspect the 1762-OB16 for signs of dust or debris buildup. Keep the enclosure clean and ensure ambient temperature stays within the rated range. The solid-state design offers long service life with no moving parts, reducing maintenance frequency.

For optimal reliability, verify that the total current per module does not exceed 4.0 A at 55°C or 8.0 A at 30°C. Surge current of 2.0 A per point is allowed with proper repeatability intervals.

Compatibility and Integration

The 1762-OB16 is compatible with MicroLogix 1100, 1200, and 1400 controllers. It connects via the expansion I/O bus, drawing up to 175 mA at 5V DC from the controller. No additional communication protocol is required—simply attach it to the controller's expansion port.

This module works with any discrete actuating device that operates within the 20.4 to 26.4 VDC range. It supports sourcing wiring, meaning the module provides the voltage to the load.

FAQs about the 1762-OB16

Q: How many outputs does the 1762-OB16 have?

A: It has 16 sourcing outputs arranged in one group (Outputs 0…15).

Q: What voltage does the 1762-OB16 require?

A: It requires an external 24VDC supply with an operating range of 20.4 to 26.4 VDC.

Q: Can I use the 1762-OB16 with MicroLogix 1400?

A: Yes, it is compatible with MicroLogix 1100, 1200, and 1400 controllers.

Q: What is the signal delay of this module?

A: The on delay is 0.1 ms and the off delay is 1.0 ms.

Q: How many 1762-OB16 modules can I install with a MicroLogix 1200?

A: Up to six expansion I/O modules can be installed with a MicroLogix 1200.

Q: What is the maximum surge current per output?

A: The maximum surge current is 2.0 A per point.

Product Support and Availability

The 1762-OB16 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. We are a trusted supplier of Allen-Bradley automation components.