Allen-Bradley | 1794-OW8 | FLEX I/O (1794 Series)

Product Description: Allen-Bradley 1794-OW8

The Allen-Bradley 1794-OW8 is an 8-channel digital output module designed for use in the FLEX I/O distributed I/O system. It provides Form A (normally open) relay outputs capable of switching both AC and DC loads. Each output channel operates independently, making it ideal for controlling contactors, solenoids, pilot lights, and other discrete devices in industrial applications requiring mechanical isolation and voltage versatility.

Key Features

• 8 individually isolated relay output channels (Form A – N.O.)
• Supports AC and DC output switching
• Electromechanical relays provide robust performance and electrical isolation
• Compatible with 1794 terminal bases and adapters (EtherNet/IP, ControlNet, DeviceNet)
• Per-channel LED indicators for output status
• Ideal for mixed- voltage and relay-driven applications

Technical Specifications

• Number of Outputs: 8 (independent relay channels)
• Contact Type: Form A (SPST-N.O.)
• Voltage Range:
  • 5–264V AC
• Max Output Current:
  • 2.0 A per channel (resistive load)
• Minimum Load: 10 mA @ 5V DC
• Surge Current: 4 A for 10 ms
• Isolation Voltage: 250V (channel-to-backplane and channel-to-channel)
• Operating Temperature: 0°C to 55°C
• Mounting: DIN rail with compatible terminal base (e.g., 1794-TB3, 1794-TB2)
• Certifications: UL Listed, CE, CSA, RoHS, Class I Div 2

Application Areas

• Control of solenoids, pilot devices, alarms, and motor starters
• Industrial systems requiring electrical isolation per channel
• Mixed AC/DC control panels
• OEM and machinery control with discrete relay outputs
• Distributed I/O environments using FLEX I/O architecture

Advantages

• Provides high-voltage and high-current switching flexibility
• Channel-to-channel isolation improves system protection
• Mechanical relays offer reliable operation across voltage types
• LED indicators simplify troubleshooting and diagnostics
• Integrates seamlessly with the modular FLEX I/O platform