1794-OB8 | Allen-Bradley Flex I/O 8-Ch Output Module

1794-OB8 Flex I/O Digital DC Output Module

Key Technical Specifications

• Manufacturer: Allen‑Bradley
• Part Number / Catalog No.: 1794-OB8
• Product Type: Flex I/O Digital DC Output Module
• Number of Outputs: 8 sourcing (24V DC nominal)
• Output Current Rating: 4A total per module
• Per-Channel On-state Current: 500 mA maximum, 1 mA minimum
• On-state Voltage Range: 10 to 31.2V DC (nominal 24V DC)
• Maximum On-state Voltage Drop: 0.5V DC
• Off-state Leakage Current: 0.5 mA maximum
• Output Delay (OFF → ON): 0.5 ms maximum
• Output Delay (ON → OFF): 1.0 ms maximum
• Flexbus Current Draw: 60 mA @ 5V DC
• Maximum Power Dissipation: 3.3 W @ 31.2V DC
• Maximum Thermal Dissipation: 11.2 BTU/hr @ 31.2V DC
• Isolation Voltage: 50V continuous (field to system, outputs are non-isolated from each other)
• Operating Temperature Range: 0 to 55 °C (32 to 131 °F)
• Relative Humidity: 5 to 95% noncondensing
• Hazardous Location Approvals: European and North American
• Mounting Method: DIN rail (snap-on)

Frequently Asked Questions (FAQ)

• Q: Is the 1794-OB8 a brand new original module?
  A: Yes, we supply only brand new, original Allen‑Bradley 1794-OB8 modules with factory specification.
• Q: Are the outputs of the 1794-OB8 isolated from each other?
  A: No. The outputs are not isolated. Use external fuses for channel protection.
• Q: What is the total current capacity of this module?
  A: The 1794-OB8 has a total output current rating of 4A. Each channel supports up to 500mA.
• Q: Can I use this module in hazardous locations?
  A: Yes. The 1794-OB8 carries approvals for both European and North American hazardous locations.
• Q: What terminal bases work with the 1794-OB8?
  A: It works with 1794-TB3, 1794-TB3S, and 1794-TBKD terminal base units.
• Q: What is your return policy for the 1794-OB8?
  A: We accept returns within 30 days from delivery, provided the module remains unused and in original condition.

For any technical or sales inquiries regarding the 1794-OB8 module, please contact us. Email: sales@nex-auto.com | Phone / WhatsApp: +86 153 9242 9628. Partner: NexAuto Technology Limited.