1794-OV16 Digital Sinking Output Module Technical Guide
Product Introduction
The Allen-Bradley 1794-OV16 belongs to the Flex I/O 1794 product line. This digital output module features 16 non-isolated sinking outputs. It operates with a nominal on-state voltage of 24V DC. The 1794-OV16 supports a voltage range from 10 to 31.2V DC. This module mounts directly onto a DIN rail. It connects to the system using terminal base units like the 1794-TB3 or 1794-TB3S. The 1794-OV16 offers a total output current rating of 8.0A. Each channel can handle a maximum of 500mA. This output module provides a low on-state voltage drop of only 0.2V DC. It also features a minimal off-state leakage current of 0.5mA. Users can easily diagnose channel status through 16 yellow LED indicators.
Core Value
The 1794-OV16 delivers reliable control for field actuators. Its design supports a wide voltage range for diverse applications. The module's sinking output type is standard for many PLC systems. It ensures compatibility with various industrial loads. The 1794-OV16 significantly reduces troubleshooting time. Its clear LED indicators show the status of each channel. The module also allows insertion and removal under power. This feature saves time and prevents system downtime. Furthermore, the 1794-OV16 offers flexibility. You can pair it with communication adapters for networks like ControlNet or EtherNet/IP.
Technical Insights
The 1794-OV16 operates as a sinking output module. This means it provides a path to ground for the load. The module has a maximum off-to-on output delay of 0.5 milliseconds. Its on-to-off output delay is a maximum of 1.0 millisecond. This quick switching capability supports high-speed automation tasks. The 1794-OV16 draws 80mA of current from the FlexBus at 5V DC. It also has a maximum power dissipation of 4.2W at 31.2V DC. This thermal characteristic is critical for panel design. Specifically, users must maintain adequate ventilation. The module outputs are protected against short circuits. This protection ensures system reliability. The 1794-OV16 also has excellent noise immunity. This feature makes it suitable for harsh industrial environments.
Installation & Maintenance
Firstly, mount the 1794-OV16 securely on a DIN rail. Ensure the rail is properly grounded. Then, install the terminal base unit firmly. Connect field wiring to the base unit terminals. Next, insert the module into the base. Press until you hear the latch click. For wiring, use copper conductors with 14 AWG gauge. Additionally, observe proper polarity for DC connections. The manufacturer recommends using fuses on each output. This protects the 1794-OV16 from overcurrent conditions. For maintenance, inspect the module regularly. Check for loose wiring connections. Furthermore, use the LEDs for diagnostics. A green OK LED indicates normal operation. A red LED signifies a fault condition. Moreover, you can change the module without removing power. The Flex I/O system supports this feature. When replacing the 1794-OV16, verify the new module's compatibility. Always store spare modules in anti-static packaging.
Buyer's Guide FAQ
1. What is the 1794-OV16 output type?
It is a digital sinking output module. It provides 16 outputs for DC loads.
2. What is the operating voltage range for the 1794-OV16?
The 1794-OV16 operates between 10 and 31.2V DC. The nominal voltage is 24V DC.
3. Can I replace the 1794-OV16 while the system is running?
Yes, the 1794-OV16 supports insertion and removal under power. This feature minimizes system downtime.
4. What is the current rating per channel on the 1794-OV16?
Each output channel handles up to 500mA. The total current is 8.0A for all channels.
5. How do I know the status of each output on the 1794-OV16?
The 1794-OV16 has 16 yellow LED indicators. These LEDs show the on or off status for each channel.
