1794-OV16P Flex I/O Digital Sinking Output Module - Allen-Bradley

Product Overview

The 1794-OV16P is a Flex I/O digital sinking output module from Allen-Bradley. It delivers 16 protected sinking outputs. Each channel supports up to 500 mA. The module handles a total output current of 8.0 A. Electronic protection guards against short circuits, high temperature, and overloads. The module shuts down during faults and recovers automatically once the fault is removed. This design prevents unnecessary downtime. The module fits into a terminal base unit. You can insert or remove it under power. No direct wiring connects the module to field devices. This feature saves time and eliminates system restarts.

Application Scenarios

This module suits industrial automation tasks. Use it to control solenoids, valves, and indicators. It works well in discrete manufacturing lines. The protected outputs make it ideal for harsh environments. Typical applications include assembly lines, packaging machines, and material handling systems. The module communicates via ControlNet, DeviceNet, EtherNet/IP, or Universal Remote I/O. You can integrate it into existing Rockwell architectures. The 1794-TB3 terminal base unit supports daisy-chaining. This reduces wiring and simplifies installation.

Technical Specifications

The module operates at 24V DC nominal On-state voltage. The output range is 10 – 31.2V DC. Maximum Off-state voltage is 31.2V DC. Off-state leakage is 0.5 mA max. On-state voltage drop is 0.2V DC max. FlexBus current draw is 80 mA. Power dissipation is 4.2 W at 31.2V DC. Thermal dissipation is 14.3 BTU/hr at 31.2V DC. Output delay from Off-to-On is 0.5 ms. From On-to-Off it is 1 ms. The module has 16 yellow LED indicators. Each LED shows the status of the corresponding channel.

Installation & Maintenance Guide

Install the module on a DIN rail. Snap it onto the 1794-TB3 terminal base unit. Ensure the FlexBus connector engages properly. The terminal base has three screw clamp strips. Use 12 AWG wire max. Apply torque of 0.56–0.79 Nm. The module is hot-swappable. Remove or insert it without powering down. For daisy-chaining, connect supply out terminals to the next module. No special maintenance is needed. Periodically check LEDs for fault indication.

Packing List

Each package includes one 1794-OV16P module. No terminal base unit is included. Order the 1794-TB3 separately. Shipping is via FedEx, UPS, or DHL.