Allen-Bradley 1794-OC16 Digital Output Module

Configured for discrete output control within FLEX I/O systems, the Allen-Bradley 1794-OC16 (1794-OC16 Digital Output Module) provides direct DC output switching through sixteen independently monitored output channels. The module interfaces controller logic with field devices operating from a 48 VDC control supply and supports distributed I/O architectures utilizing FLEX I/O backplane communication.

Hardware Specifications

Backplane Communication and Distributed I/O Architecture

The 1794-OC16 operates as a FLEX I/O output module that exchanges control data through the FLEX I/O backplane. Output status information is communicated between the module and the controlling processor while field-side switching functions are executed through the sixteen output channels.

The distributed I/O architecture permits field installation of output modules closer to controlled equipment, reducing field wiring complexity and supporting modular system expansion. Output channel status can be observed through the integrated front-panel indicators, allowing rapid verification of commanded output conditions.

I/O Density and Output Channel Management

The module provides sixteen digital output points within a compact FLEX I/O form factor. High channel density enables multiple field loads to be controlled from a single I/O location while maintaining consistent backplane integration with the FLEX platform.

External field power is supplied through a nominal 48 VDC source, with operation supported across an input voltage range of 30 VDC to 60 VDC. Proper output performance depends on matching field power requirements to connected loads and terminal base configurations.

Frequently Asked Questions

Q: How many output channels are available on the module?
A: The 1794-OC16 provides 16 digital output channels.

Q: What field power supply voltage is required?
A: The module is designed for a nominal 48 VDC external supply and supports 30 VDC to 60 VDC operation.

Q: Can terminal torque values be determined from the module specifications?
A: No. Terminal base screw torque requirements depend on the specific FLEX I/O terminal base installed with the module.

Field Installation Guidelines

• Verify compatibility with the installed FLEX I/O terminal base before installation.

• Confirm the external DC supply remains within the specified 30 VDC to 60 VDC operating range.

• De-energize field wiring before connecting or disconnecting output circuits.

• Route output wiring separately from high-noise power conductors where practical.

• Verify terminal assignments against the installed terminal base documentation.

• Inspect all wiring terminations before energizing the module.

• Confirm output operation through the front-panel status indicators during commissioning.