Allen-Bradley 1746-OB16 | 16-Point Digital DC Output Module

Overview

The Allen-Bradley 1746-OB16 is a 16-point digital DC output module designed for SLC 500 systems. It provides high-reliability signal switching with fast response times, supporting a wide operating voltage range for industrial control applications. The module is engineered to maintain consistent performance under varying load and environmental conditions.

Technical Specifications

Module Information

• Model: 1746-OB16

• Product Type: Digital DC Output Module

• Manufacturer: Allen-Bradley

• System Compatibility: SLC 500

Electrical Ratings

• Voltage Category: 24 VDC Signal Output

• Operating Voltage: 10–50 VDC (source)

• Number of Outputs: 16

• Points per Common: 16

• Continuous Current per Point: 0.50 A @ 30°C, 0.25 A @ 60°C

• Maximum Continuous Module Current: 8.0 A @ 30°C, 4.0 A @ 60°C

• Load Current Minimum: 1 mA

• On-State Voltage Drop: Max 1.2 V @ 0.50 A

• Off-State Leakage Current: Max 1 mA

• Backplane Current Consumption: 0.280 A @ 5V DC, 0.0 A @ 24V DC

Timing & Response

• Signal Delay ON: 0.1 ms

• Signal Delay OFF: 1.0 ms

• Surge Current per Point: 4.0 A for 10 ms

Environmental & Physical

• Operating Temperature: 0–60 °C

• Weight: 0.37 kg

Applications

The 1746-OB16 module is ideal for controlling discrete DC devices such as relays, indicator lamps, and solenoids. Its fast switching and stable output make it suitable for production lines, machine automation, and process control systems.

FAQ

Q: How many outputs does the module provide?
A: 16 discrete DC outputs.

Q: What is the operating voltage range?
A: 10–50 VDC, optimized for 24 VDC systems.

Q: Can it handle high inrush currents?
A: Yes, the surge current per point is 4.0 A for 10 ms.

Q: What is the maximum module current?
A: 8 A at 30°C, 4 A at 60°C.