Product Summary
The 1794-OW8XT is an 8-relay output module from Rockwell Automation. It switches high-current loads in demanding industrial environments. Its conformal coating protects against harsh conditions. This unit integrates seamlessly into the Flex I/O platform.
Theme: Expert Technical Evaluation & Performance Review
Robust Relay Switching Capabilities
The 1794-OW8XT module provides eight normally open relay channels. Each channel offers isolated switching for diverse loads. The relay contacts handle up to 250V AC. This makes the module ideal for controlling motors and valves. Its initial contact resistance is just 30 milliohms. This ensures minimal power loss during operation.
High-Temperature Tolerance and Protection
This module features a conformal coating for enhanced durability. It operates reliably in high-temperature environments without issues. The off-state leakage current remains at only 1.0mA. This occurs through the integrated snubber circuit. The module dissipates a maximum of 5.5 Watts. Its thermal dissipation rating reaches 18.8 BTU per hour.
Electrical Specifications and Power Management
The 1794-OW8XT requires a supply voltage between 19.2 and 31.2 Volts DC. It draws 126 milliamps of current from the power supply. The module uses 5V DC from the FlexBus backplane. It delivers a bounce time of just 1.2 milliseconds. The switching frequency reaches 0.3 Hertz at rated load. You must add external fusing to protect the output channels.
Mechanical Design and Installation
This module has a compact size of 46 by 94 by 53 millimeters. It mounts easily onto a standard DIN rail for installation. You must use a zinc-plated yellow-chromate steel DIN rail. Proper grounding through the DIN rail is essential for safety. A qualified technician should perform the complete installation process.
Compatibility with Terminal Base Units
The 1794-OW8XT works with nine different Allen-Bradley terminal bases. It pairs perfectly with the 1794-TB3 terminal base unit. The 1794-TB3 provides three strips of screw clamp terminals. It supports daisy-chaining for power distribution to adjacent modules. This combination creates a flexible and scalable I/O system.
Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1794-OW8XT Flex I/O Relay Output Module
- Product is shipped in an anti-static protective packaging
- Express delivery shipping is available via FedEx, UPS, and DHL
