Allen-Bradley 1794-OV16 16-Channel Sinking Output Module

Product Introduction 1794-OV16

The Allen-Bradley 1794-OV16 delivers high-density digital output control within the Flex I/O system. This module features sixteen sinking outputs specifically designed for DC load applications. With a nominal voltage of 24V DC, the 1794-OV16 provides a robust and efficient solution for controlling various field devices. Its flexible design supports hot swapping. This allows module insertion or removal under power, which minimizes costly downtime and eliminates the need for system restarts.

Technical Specifications 1794-OV16

The 1794-OV16 operates with an on-state voltage range of 10 to 31.2V DC. Each channel supports a maximum on-state current of 500mA. Consequently, the total module output current rating reaches 8.0A when all channels are active. The off-state voltage maximum is 31.2V DC, while the off-state leakage current is an impressively low 0.5mA maximum. Additionally, the on-state voltage drop is minimal at only 0.2V DC maximum. This ensures efficient power transfer to connected loads.

Furthermore, the module offers fast switching performance. The off-to-on signal delay is 0.5ms maximum, and the on-to-off delay is 1.0ms maximum. The 1794-OV16 draws a FlexBus current of 80mA. Its maximum power dissipation is 4.2W at 31.2V DC, with a thermal dissipation of 14.3 BTU/hr. These specifications make it a highly efficient and powerful choice for demanding DC output applications.

Mechanical and Environmental Parameters

The Allen-Bradley 1794-OV16 is a rugged, open-style module with an IP20 environmental protection rating. It features 16 yellow LED status indicators that provide clear, logic-driven visual feedback for each channel. The module operates reliably across a temperature range of 0 to 55 °C. It also supports a relative humidity range of 5 to 95% non-condensing. For installation, the 1794-OV16 is designed for simple DIN rail mounting, ensuring quick and secure attachment within the control cabinet.

Installation and Wiring Guide

Installing the 1794-OV16 is a straightforward process. It is compatible with the 1794-TB3 and 1794-TB3S terminal base units. First, select the appropriate base and set its keyswitch to the correct position for this module. Next, mount the terminal base firmly onto a standard DIN rail. Then, align the 1794-OV16 module with the base and press it firmly until the latch clicks, securing it in place. The module supports hot swapping, so it can be inserted or removed under power without damaging the system. Finally, connect the external DC supply and your field devices to the screw terminals on the base unit.

Packaging and Shipping

Your Allen-Bradley 1794-OV16 module will arrive in protective packaging suitable for industrial automation components. The shipment includes the digital output module only. The terminal base unit, wiring, and mounting hardware are sold separately. We exclusively use Fedex, UPS, and DHL for all global shipments to ensure your order arrives quickly and safely.

Frequently Asked Questions (FAQ)

1. What type of outputs does the 1794-OV16 provide?
The Allen-Bradley 1794-OV16 provides 16 sinking digital outputs.

2. What is the nominal voltage for this module?
The nominal output voltage for the 1794-OV16 is 24V DC, with a range of 10 to 31.2V DC.

3. Which terminal bases are compatible with the 1794-OV16?
It is compatible with the 1794-TB3 and 1794-TB3S terminal base units.

4. Can I replace this module while the system is powered on?
Yes, the 1794-OV16 supports hot swapping, allowing module replacement without disconnecting power.

5. What is the maximum output current per channel?
Each channel on the 1794-OV16 supports a maximum on-state current of 500mA.