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1794-OA8

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

In stock (26 units), ready to be shipped

  • Manufacturer: Allen-Bradley

  • Product No.: 1794-OA8

  • Product Type: AC Output Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 150g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Description

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

Allen-Bradley 1794-OA8 | Flex I/O AC digital output module with 8 non-isolated output channels. Operates at 120V AC nominal voltage with 4.0 A output current rating. Designed for all non-hazardous industrial environments and Class 1, Division 2 areas. Weight: approximately 0.15 kg (0.33 lbs).

Key Features

8 non-isolated outputs in one group. 120V AC nominal output voltage, 85-132V AC range. 4.0 A output current rating. Minimum on-state current 5 mA per output. Maximum on-state voltage drop 1.0V at 0.5 A. Maximum off-state leakage 2.25 mA. 120V continuous isolation voltage. 80 mA Flexbus current at 5V DC. Surge current 7 A for 40 ms, repeatable every 8 seconds. Output signal delay max 1/2 cycle. Diagnostics for field devices, wiring, and power supply. Lightweight at 0.15 kg (0.33 lbs).

Technical Specifications

Manufacturer Rockwell Automation
Brand Allen-Bradley
Part Number 1794-OA8
Product Type Flex I/O Digital Output Module
Outputs 8 (Non-isolated)
Output Voltage (Nominal) 120V AC
Output Voltage Range 85-132V AC
Output Current Rating 4.0 A
On-State Current (Min) 5 mA per output
On-State Voltage Drop 1.0V max @ 0.5 A
Off-State Leakage Current 2.25 mA max
Isolation Voltage 120V continuous
Flexbus Current 80 mA @ 5V DC
Surge Current 7 A for 40 ms, repeatable every 8 s
Signal Delay (ON/OFF) Max 1/2 cycle
Power Dissipation 4.1 W @ 0.5 A; 6.3 W @ 0.75 A and 1 A
Thermal Dissipation 14.0 BTU/hr @ 0.5 A; 21.2 BTU/hr @ 0.75 A; 21.4 BTU/hr @ 1 A
Weight Approx. 0.15 kg (0.33 lbs)
UPC 10612598137845

Current Derating by Temperature

55°C 500 mA per output
35°C 750 mA per output
30°C 500 mA on 4 outputs; 1 A on 4 non-adjacent outputs

Compatible Terminal Base Units

1794-TBNK, 1794-TBKD, 1794-TB3K, 1794-TBNFK, 1794-TB3SK, 1794-TBNF, 1794-TB3, 1794-TB2, 1794-TB3S, and 1794-TBN. Auxiliary terminal strips are required when using the 1794-TBN base unit.

Installation Notes

Install directly on compatible Flex I/O terminal base units. Use auxiliary terminal strips when mounting on the 1794-TBN base. Observe current derating based on ambient temperature: 500 mA per output at 55°C, 750 mA at 35°C. Verify off-state leakage does not affect connected loads. Ensure proper grounding per Allen-Bradley wiring guidelines. Suitable for non-hazardous and Class 1 Division 2 environments.

Engineering Advantages

Integrated diagnostics identify faults in field devices, wiring, and power supply, reducing commissioning and troubleshooting time. 8 outputs in a single Flex I/O module maximize channel density. High 4.0 A module rating handles demanding AC loads directly. Surge current capability of 7 A supports inductive load switching. Wide 85-132V AC range accommodates supply variations. Modular Flex I/O design enables flexible system expansion.

FAQs

Q1: How many outputs does this module provide?
A1: 8 non-isolated AC outputs in a single group.

Q2: What is the output voltage range?
A2: 85-132V AC, with a nominal rating of 120V AC.

Q3: What is the current rating at different temperatures?
A3: 500 mA per output at 55°C, 750 mA per output at 35°C, and 1 A on 4 non-adjacent outputs at 30°C.

Product Resources

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