FLEX I/O (1794 Series) | Allen-Bradley | 1794-OA8I FLEX 8-POINT DIGITAL OUTPUT MODULE
$270.75
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FLEX I/O (1794 Series) | Allen-Bradley | 1794-OA8I FLEX 8-POINT DIGITAL OUTPUT MODULE
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Product Description: Allen-Bradley 1794-OA8I
The Allen-Bradley 1794-OA8I is an 8-channel digital output module designed for the FLEX I/O platform. It features isolated triac outputs capable of switching AC loads up to 264V, making it suitable for controlling relays, contactors, indicators, and other AC-powered devices. Each output is individually isolated, providing high reliability and protection for systems where independent AC signal control is required.
Key Features
- 8 individually isolated AC output channels
- Triac-based switching for 120/240V AC loads
- Supports 47–63 Hz frequency range
- Output status indication via onboard LEDs
- Compatible with FLEX I/O terminal bases (e.g., 1794-TB3S)
- Each channel can operate independently, ideal for diverse AC applications
Technical Specifications
- Output Type: Triac (AC switching)
- Voltage Range: 85–264V AC
- Frequency: 47–63 Hz
- Max Output Current: 1.0 A per channel (resistive load), 8.0 A total per module
- Minimum Load: 10 mA at 85V AC
- Surge Current: 20 A for 0.5 cycles, 1.0 A continuous
- Output Delay: On: ≤1 ms, Off: ≤11 ms
- Isolation Voltage: 250V AC (channel-to-channel and channel-to-backplane)
- Power Dissipation: Approx. 6.4 W
- Operating Temperature: 0°C to 55°C
- Mounting: DIN rail via appropriate terminal base
- Certifications: UL Listed, CE, CSA, RoHS, Class I Div 2
Application Areas
- Factory automation using 120/240V AC output devices
- Control of relays, alarms, and pilot lights
- Industrial processes with isolated output requirements
- OEM panels with multi-voltage AC control systems
- Distributed I/O applications requiring per-channel isolation
Advantages
- Individually isolated outputs improve noise immunity and system safety
- Handles both low and high-voltage AC loads reliably
- Triac outputs ensure long service life with no mechanical wear
- High versatility in switching different types of AC devices
- Seamless integration with the FLEX I/O architecture