1797-OB4D Product datasheet 

1797-OB4D Functional Description

The 1797-OB4D Allen-Bradley Digital Output Module is a four-channel digital output module engineered for the FLEX Ex I/O system, specifically designed to operate in demanding industrial environments. Its fundamental characteristic is a non-isolated sourcing output type, which simplifies wiring by referencing all four channels to a single common supply. This design makes the ROCKWELL 1797-OB4D Flex Ex 4 Point Source Output a practical and efficient solution for controlling various field devices like actuators and solenoid valves.

A key operational advantage of the Machine Control 1797-OB4D Allen Bradley is its integrated diagnostic capability. The module is electronically protected against short circuits and can detect faults such as wire breaks on a per-channel basis. When a fault is identified, the module's status indicator blinks red, providing immediate visual feedback. This feature allows for rapid troubleshooting and minimizes system downtime, enhancing overall operational reliability.

The module offers precise control with a fast update rate, refreshing its output states from the system backplane every two milliseconds. This responsive performance is crucial for applications requiring timely actuation. Each channel is equipped with a yellow LED that clearly indicates its current output state, offering operators at-a-glance confirmation of the module's operational status directly on the factory floor.

Built for robust performance, the Flex EX Output Module AB 1797-OB4D operates within a specified temperature range and is designed to handle typical industrial conditions. Its compact form factor allows for efficient use of control panel space. The combination of diagnostic intelligence, fast response, and robust construction makes the 1797-OB4D Allen-Bradley PDF a reliable choice for ensuring safe and efficient control in automated processes.