1794-OW8 Allen-Bradley Flex I/O 8 Relay Output Module

Allen-Bradley 1794-OW8 Flex I/O Relay Output Module

Core Technical Specifications

• Output Channels: 8 isolated electromechanical relays, each with a yellow status indicator for clear operational feedback.
• Relay Contact Ratings: Handles 250V AC, 2 A resistive loads; 120/240V AC make 1800VA, break 180VA; 5…30V DC, 2 A resistive.
• Power Requirements: Requires 24V DC (125 mA) for the relay coils and draws 35 mA from the 5V DC FlexBus backplane.
• Off-State Leakage: Maximum 1.0 mA at 240V AC through the internal snubber circuit, ensuring minimal interference when off.
• Environmental Tolerance: Operates reliably from 0 to 55 °C, withstands 5g vibration at 10…500 Hz, and survives 30g operating shock.
• Switching Characteristics: Features 10 ms maximum signal delay for both turn-on and turn-off, with a rated switching frequency of 0.3 Hz at full load.
• Contact Durability: Mechanical life exceeds 100,000 operations at rated loads, with an initial contact resistance below 30 mΩ.

Compatible Terminal Bases & Installation

• Mount the 1794-OW8 on terminal bases like 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, or 1794-TBNF.
• If using the 1794-TBNF base, we recommend a 3.0 A, 250V AC slow-blow fuse (Littelfuse 239003) for output protection.
• Keyswitch position 9 ensures correct module insertion, and wiring size depends on the chosen terminal base.
• Mounts easily on standard DIN rail and requires only 24V DC external power for the relay coils.

Frequently Asked Questions (FAQ)

• Is the 1794-OW8 a new original module? Yes, we supply only brand new and original 1794-OW8 units from Allen-Bradley.
• What is the lead time for this module? We maintain stock and ship orders within 5 days via FedEx, UPS, or DHL.
• What terminal bases work with the 1794-OW8? It fits 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TBNF, and similar Flex I/O bases.
• Can this module switch DC loads? Yes, relay contacts handle 5…30V DC at 2 A (resistive), with pilot duty up to 28VA.
• Does the module have output status indicators? Yes, eight yellow LEDs show the on/off state for each relay channel.
• What is the maximum switching frequency? The module supports 1 operation per 3 seconds (0.3 Hz) at rated load.
• Is the 1794-OW8 isolated from the backplane? Yes, it provides 250V continuous isolation between relays and the backplane.

Contact Information Inquiries: sales@nex-auto.com , +86 153 9242 9628

Partner NexAuto Technology Limited : https://www.nex-auto.com/