Product Overview of the Allen-Bradley 1769-OV16 Module

The Allen-Bradley 1769-OV16 belongs to the 1769 Compact I/O product family. This module provides sixteen sinking output channels in a single group. The operating voltage range spans 20.4 to 26.4 VDC for flexible integration. Consequently, this module works with standard 24 VDC industrial power supplies.

The output current rating depends on the ambient temperature conditions. Each channel delivers 0.5 Amps at 60 degrees Celsius. Each channel delivers 1.0 Amp at 30 degrees Celsius. Therefore, the 1769-OV16 provides higher current in cooler environments.

The total module current follows the same temperature derating pattern. Maximum current per module is 4.0 Amps at 60 degrees Celsius. Maximum current per module reaches 8.0 Amps at 30 degrees Celsius. Accordingly, plan your load distribution based on cabinet temperature.

Technical Specifications of the 1769-OV16

• Manufacturer: Rockwell Automation

• Brand: Allen-Bradley

• Part Number: 1769-OV16

• Product Line: CompactLogix / Compact I/O

• Series: 1769 Compact I/O

• Number of Outputs: 16

• Number of Groups: 1

• Wiring Configuration: Sink

• Output Voltage: 24 VDC nominal

• Output Voltage Range: 20.4 to 26.4 VDC

• Output Current per Point: 0.5A at 60°C, 1.0A at 30°C

• Output Current per Module: 4.0A at 60°C, 8.0A at 30°C

• Output Delay Time ON: 0.1 ms

• Output Delay Time OFF: 1.0 ms

• Surge Current: 2.0A for 10 ms (repeatable every 2 seconds)

• OFF State Leakage Current: 1.0 mA maximum at 26.4 VDC

• Resolution: 14 bits across 21V (1.3 mV)

• Backplane Current at 5.1V: 200 mA

• Maximum Heat Dissipation: 2.06 W

• Wire Type: Copper, 90°C rated

• Solid Wire Size: 22 to 14 AWG

• Stranded Wire Size: 22 to 16 AWG

• Operating Temperature: 0 to 60°C

• Relative Humidity: 5 to 95% non-condensing

• Operating Vibration: 5g at 10 to 500 Hz

• Operating Shock (Panel): 30g

• Operating Shock (DIN Rail): 20g

• Weight: 0.61 lbs (approx)

• Dimensions: 4.65 x 1.38 x 3.43 inches

The Allen-Bradley 1769-OV16 draws 200 mA from the 5.1V backplane supply. The OFF state leakage current stays below 1.0 mA at 26.4 VDC. The maximum ON state voltage drop is 1.0 VDC at 1 Amp. Furthermore, the minimum ON state current is 1 mA for reliable operation.

Output Delay and Surge Capabilities

The 1769-OV16 provides fast output response times for demanding applications. The ON delay time is only 0.1 milliseconds from command to output. The OFF delay time measures 1.0 milliseconds for reliable turn off. Consequently, this module suits high speed output applications like positioning or counting.

Each output can handle a surge current of 2.0 Amps for 10 milliseconds. This surge capability accommodates inrush currents from incandescent lamps and solenoids. The surge is repeatable every 2 seconds for periodic loads. Therefore, the 1769-OV16 drives demanding inductive and capacitive loads effectively.

The resolution reaches 14 bits across the 21V operating range. This provides 1.3 millivolts of resolution for analog-like control. The sinking configuration connects the load between the output and the positive supply. Accordingly, the output switches the negative side of the load circuit.

Power Supply Distance and Installation Requirements

The 1769-OV16 must be installed within 8 modules of the power supply. This distance rating ensures proper backplane voltage levels. If more than 8 modules are needed, add another power supply. Compatible power supplies include the 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4.

The module occupies a single slot in the Compact I/O chassis. A removable terminal block with finger-safe cover simplifies wiring. The terminal block is located behind the front door of the module. Route wiring from below the module to the I/O terminals for neat installation.

The open enclosure rating requires installation inside a control cabinet. This protects the module from dust and accidental contact. The 1769-OV16 works with both CompactLogix and MicroLogix 1500 controllers. Therefore, this module serves multiple Rockwell Automation platforms.

Installation Guide for the 1769-OV16

Follow these steps to install the Allen-Bradley 1769-OV16 correctly.

1. Power down the entire system before handling the module.

2. Select a slot within 8 modules of the power supply.

3. Align the module with the slot guides and backplane connector.

4. Push firmly until the module seats completely into place.

5. Secure the module using the top and bottom retaining clips.

6. Open the front door to access the removable terminal block.

7. Connect loads between each output and the positive supply.

8. Use copper wire rated for 90°C with 22-14 AWG solid or 22-16 AWG stranded.

9. Close the terminal block finger-safe cover after wiring.

10. Power up the system and verify output operation.

Maintain the ambient temperature between 0 and 60°C at all times. Keep relative humidity below 95% without condensation. Do not exceed the maximum current per point at the operating temperature. The 1769-OV16 will be damaged by voltages above 26.4 VDC.

Package Contents for Allen-Bradley 1769-OV16

• 1 x Allen-Bradley 1769-OV16 discrete output module

• 1 x Removable terminal block with finger-safe cover

• 1 x Module identification label sheet

• 1 x Installation instructions quick reference

Frequently Asked Questions (FAQ)

1. What is the difference between sinking and sourcing outputs?
The 1769-OV16 uses sinking outputs which switch the negative side of the load. The load connects between the output and the positive supply. Sourcing outputs switch the positive side instead.

2. Can I use this module with 12 VDC loads instead of 24 VDC?
No, the 1769-OV16 requires an operating voltage between 20.4 and 26.4 VDC. Voltages below 20.4 VDC may not turn the outputs on reliably. Use a different output module for 12 VDC applications.

3. What happens if I exceed the maximum current per point?
Exceeding the current rating may damage the output transistor permanently. The module has no built-in overcurrent protection per channel. Use an external fuse or current limiting device for each output.

4. How do I know if the 1769-OV16 is compatible with my controller?
This module works with CompactLogix and MicroLogix 1500 controllers. Both platforms support the 1769 Compact I/O family. Check your controller's user manual for maximum I/O module counts.

5. Why does the output current rating change with temperature?
Higher temperatures reduce the module's ability to dissipate heat. The 0.5A rating at 60°C ensures safe operation in warm cabinets. Derating protects the output transistors from thermal damage.