1794-OB16 Allen-Bradley Flex IO Output Module 16 Channels

Product Overview

The 1794-OB16 is a Flex I/O digital output module from Allen-Bradley. It features 16 sourcing outputs rated at 24VDC. Each channel supports up to 500 mA. The total output current reaches 8 A. This module works with several terminal bases like 1794-TB2, 1794-TB3, and 1794-TB3S. It uses a keyswitch position of 2 for easy installation. The module draws 80 mA from the FlexBus at 5VDC. Maximum power dissipation is 5.3 W at 31.2VDC. The thermal dissipation measures 18.1 BTU per hour.

Application Scenarios

Use the 1794-OB16 in distributed I/O systems. It connects to Flex I/O adapters for remote control. Common applications include machine control, conveyor systems, and packaging lines. The module suits both local and remote automation tasks. You can place up to eight modules in a single Flex I/O rack. It also works as local I/O for FlexLogix controllers.

Technical Specifications

The on-state voltage range is 10 to 31.2 VDC. Nominal voltage is 24 VDC. Minimum on-state current is 1 mA per channel. Maximum off-state leakage current is 0.5 mA. On-state voltage drop is 0.5 VDC maximum. Surge current is 2 A for 50 ms. Signal delay is 0.5 ms off-to-on and 1 ms on-to-off. Isolation voltage is 50 V continuous. Operating temperature is 0 to 55 °C. Storage temperature is -40 to 85 °C. Vibration rating is 5g at 10 to 500 Hz. Shock rating is 30g. Dimensions are 94 x 94 x 69 mm. Weight is 78 g. The module has 16 yellow status indicators.

Installation & Maintenance Guide

Mount the 1794-OB16 on a DIN rail. Use a compatible terminal base for wiring. Wire size depends on the terminal base used. The module does not include internal fuses. Install external fuses if required. Recommended fuse is SAN-O MQ4-800 mA. Connect the FlexBus via the terminal base. Ensure proper keyswitch alignment. No regular maintenance is needed. Keep the enclosure open for airflow. Use only Fedex, UPS, or DHL for shipping.

Packing List

1x Allen-Bradley 1794-OB16 Flex IO Output Module
1x Installation Instructions