1794-OW8XT 8-Channel Relay Output Flex I/O XT Allen-Bradley

Allen-Bradley 1794-OW8XT Flex I/O Relay Output Module

Core Technical Specifications

• Output Channels: 8 isolated electromechanical relays with normally open (Form A) contacts.
• Relay Contact Ratings: Handles 250V AC loads with an initial contact resistance of only 30 milliohms.
• Power Requirements: Operates on a 24V DC supply (nominal) with a range of 19.2…31.2V DC and draws 126 mA.
• Off-State Leakage: Maximum 1.0 mA through the internal snubber circuit, preventing unwanted activation.
• Environmental Tolerance: Conformal coating allows the 1794-OW8XT to withstand high temperatures and harsh conditions.
• Switching Characteristics: Features a bounce time of 1.2 ms and a maximum switching frequency of 0.3 Hz (1 operation per 3 seconds) at rated load.
• Minimum Contact Load: Reliably switches low-level signals as small as 100 µA at 100 mV DC.

Performance & Physical Characteristics

• Power Dissipation: Maximum 5.5 Watts, with a thermal dissipation of 18.8 BTU/hour at 31.2V DC.
• Isolation Voltage: Provides 250V continuous isolation for relay-to-relay and relay-to-backplane protection.
• FlexBus Current: Draws 35 mA from the 5V DC backplane, ensuring low power consumption.
• Compact Dimensions: Measures 46 mm (height) x 94 mm (width) x 53 mm (depth) for space-efficient installation.

Frequently Asked Questions (FAQ)

• Is the 1794-OW8XT a new original module? Yes, we supply only brand new and original 1794-OW8XT units from Allen-Bradley with conformal coating.
• What does the "XT" designation mean? XT stands for eXtreme Temperature, meaning the module has conformal coating to withstand high-temperature environments.
• What is the lead time for this module? We maintain stock and ship orders within 5 days via FedEx, UPS, or DHL.
• What is the supply voltage range for the 1794-OW8XT? It accepts 19.2 to 31.2 Volts DC, with a nominal rating of 24 Volts DC at 126 mA.
• Does this module require external fusing? Yes, we recommend adding fusing to the output channels to protect against overcurrent conditions.
• How do I ground the 1794-OW8XT properly? Ground the module through the DIN rail, preferably using a zinc-plated yellow-chromate steel DIN rail.
• What is the switching frequency of this relay module? The maximum switching frequency is 1 operation per 3 seconds (0.3 Hz) at rated load.

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

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