1794-OA8 Allen-Bradley Flex I/O AC Output Module

1794-OA8 Flex I/O AC Digital Output Module Overview

Technical Specifications at a Glance

• Manufacturer: Allen-Bradley
• Series: Flex I/O 1794
• Product Type: Flex I/O Digital Output Module (AC)
• Number of Outputs: 8, non-isolated
• Output Voltage Range: 85 to 132 VAC (nominal 120 VAC)
• Minimum On-state Current: 5 mA per output
• Frequency: 47 to 63 Hz
• Isolation Voltage: 120 Volts continuous
• Power Dissipation: 4.1 W at 0.5 Amps maximum
• Thermal Dissipation: 14.0 BTU/hour at 0.5 Amps maximum
• Surge Current Rating: 7 Amps for 40 ms (repeatable every 8 seconds)
• Output Signal Delay: Maximum 1/2 cycle (ON to OFF and OFF to ON)

Current Rating by Temperature (Per Output)

• At 55°C: 500 mA per output (all 8 outputs active)
• At 35°C: 750 mA per output
• At 30°C: 500 mA on 4 outputs and 1 Amp on 4 non-adjacent outputs

Compatible Terminal Bases for the 1794-OA8

• The 1794-OA8 mounts directly on these terminal base units: 1794-TBNK, 1794-TBKD, 1794-TB3K, 1794-TBNFK, 1794-TB3SK, 1794-TBNF, 1794-TB3, 1794-TB2, 1794-TB3S, and 1794-TBN.
• When using the 1794-TBN base unit, you must add auxiliary terminal strips. These strips connect the 120 VAC common voltage source for individual channels.
• The terminal base determines the wire size you can use. Always follow the terminal base specifications for proper wiring.

Environmental and Operating Limits

• Hazardous Location Rating: Class 1, Division 2 (Groups A, B, C, D).
• Mounting: DIN rail (open-type enclosure).
• Keyswitch Position: 8
• Enclosure Type: Open-type
• Dimensions (H x W x D): 3.7 x 3.7 x 2.7 inches (94 x 94 x 69 mm)
• Weight: Approximately 96 grams (3.38 ounces)

Frequently Asked Questions (FAQ)

• Q: What is the condition of the 1794-OA8 module?
  A: We supply only brand-new, original Allen-Bradley units. Each module comes from factory-sealed stock.
• Q: Do you have this module in stock?
  A: Yes, we maintain ready inventory for the 1794-OA8. We can ship most orders immediately.
• Q: What is your return policy?
  A: We accept returns within 30 days of delivery. Items must remain unused and in original packaging.
• Q: Can I use the 1794-OA8 with a 24 VAC load?
  A: No. The 1794-OA8 requires an AC voltage between 85 and 132 VAC. It does not work with 24 VAC or DC loads.
• Q: What is the output delay time for this module?
  A: The maximum output signal delay equals 1/2 cycle of the AC frequency. For 60 Hz, this equals approximately 8.3 ms.
• Q: Does the 1794-OA8 have isolation between output channels?
  A: No. The 1794-OA8 provides non-isolated outputs. All outputs share a common reference.
• Q: Can I install this module in a hazardous location?
  A: Yes. The 1794-OA8 carries a Class 1, Division 2 rating for use in appropriate hazardous industrial environments.

For inquiries or purchase assistance, please contact us:
Email: sales@nex-auto.com
Phone (WhatsApp): +86 153 9242 9628

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