Product Overview
The Allen-Bradley 1794-OC16 is a Flex I/O digital output module engineered for demanding industrial control environments. This module provides 16 nonisolated sourcing outputs, making it an ideal choice for driving solenoids, contactors, and indicator lights in automated machinery. With a nominal output voltage of 48V DC and a wide operating range from 30V DC to 60V DC, the 1794-OC16 offers flexibility for various control system voltages.
Part of the Rockwell Automation Flex I/O family, the 1794-OC16 mounts directly onto a compatible terminal base, enabling quick installation and module swapping without disturbing field wiring. Its compact design and robust construction ensure reliable performance in panel-mounted applications.
Key Technical Specifications
The following table summarizes the critical electrical ratings for the Allen-Bradley 1794-OC16 module:
| Parameter |
Value |
| Outputs |
16 Nonisolated Sourcing |
| Output Voltage (min) |
30V DC |
| Output Voltage (max) |
60V DC @ 45°C |
| On-state Current (min) |
2.0mA per Channel |
| On-state Current (max) |
500mA per Channel |
| Off-state Voltage (max) |
60V DC |
| Off-state Leakage (max) |
1.0mA |
| On-state Voltage Drop (max) |
1.0V DC @ 0.5A |
| Flexbus Current |
80mA @ 5V DC |
| Power Dissipation |
3.7W @ 60V DC |
These specifications ensure that the 1794-OC16 delivers consistent performance while maintaining low power consumption. The module's 500mA per channel output capability supports a wide range of actuators, and the 1900V DC isolation test (system to user) enhances safety in industrial installations.
Installation and Setup
Installing the 1794-OC16 is straightforward. The module attaches to a Flex I/O terminal base, with compatible bases including 1794-TB3, 1794-TB3K, 1794-TB3S, 1794-TB3SK, and 1794-TB3S. Before mounting, set the module's keyswitch to Position 2 as required for this model. The module can be mounted horizontally or vertically, providing flexibility in panel layout.
Because the 1794-OC16 uses nonisolated outputs, ensure that all connected devices share a common ground to avoid potential ground loops. The 16 yellow LED indicators on the front panel provide immediate visual feedback for each output's on/off state, simplifying troubleshooting during commissioning.
Compatible Terminal Bases
- 1794-TB3
- 1794-TB3K
- 1794-TB3S
- 1794-TB3SK
Maintenance and Reliability
Regular inspection of the 1794-OC16 is minimal due to its solid-state design. Periodically check that the terminal base connections are tight and free from dust or corrosion. The module's power dissipation of 3.7W ensures it remains cool under normal operation, but ensure adequate airflow in the enclosure to maintain optimal performance.
Given its robust design, the 1794-OC16 offers long service life, reducing downtime and replacement costs. The module's ability to withstand 1900V DC for 1 second between system and user enhances its durability in harsh industrial environments.
Selection Guide
When selecting the Allen-Bradley 1794-OC16 for your application, verify that your control system's output voltage and current requirements align with the module's 30-60V DC range and 500mA per channel maximum. Confirm compatibility with your existing Flex I/O terminal base. For expert assistance and reliable sourcing, PLC Source PRO offers genuine Allen-Bradley components with fast shipping.