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- Allen Bradley
- 1794-OA16
- ControlNet Flex I/O Adapter Module
- USA
- 94 mm × 136 mm × 66 mm
- 0.11kg
- Xiamen, China
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FLEX I/O 1794-OA16 Technical Profile
1. Product Overview
The 1794-OA16 is a high-reliability industrial AC digital output module designed for distributed automation systems. It is part of a modular remote I/O platform and is used to control external AC loads such as relays, contactors, solenoids, indicator lamps, and industrial actuators.
It provides 16 non-isolated AC output channels, typically operating in the 74–132V AC range, making it suitable for standard industrial 120V AC control applications.
This module is widely used in decentralized control systems where field devices require direct AC switching capability from a distributed I/O network.
2. Brand and Product Classification
- Brand: Industrial automation control manufacturer
- Product Type: AC Digital Output Module
- Series: FLEX I/O 1794 Series
- System Type: Distributed Remote I/O system
- Output Type: AC sourcing output
- Channel Count: 16 channels
- Installation Type: DIN rail mounted modular system
- Module Category: Discrete output interface module
3. Product Introduction
The 1794-OA16 module is designed to switch AC loads in industrial environments through a distributed control architecture.
Each output channel is individually controlled and designed to energize devices operating at nominal 120V AC levels.
The module integrates into a FLEX I/O system where it communicates with a central controller via a communication adapter, enabling remote switching of field devices without centralized wiring.
It includes LED status indicators for each output channel, providing real-time feedback for system diagnostics and maintenance.
4. Key Technical Parameters
4.1 Electrical Parameters
| Parameter | Specification |
|---|---|
| Output Channels | 16 points |
| Output Type | AC digital output |
| Nominal Voltage | 120V AC |
| Operating Voltage Range | 74 – 132V AC |
| Output Current Rating | 4.0 A total module rating |
| Minimum ON Current | 5 mA per output |
| Surge Current | up to 7 A (short duration) |
| Off-state Leakage Current | ≤ 2.25 mA |
| Output Isolation | Field-to-backplane isolation |
| Fusing | External fuse protection required |
| Power Dissipation | approx. 4.7 W |
4.2 Functional Parameters
| Parameter | Specification |
|---|---|
| Load Type | AC inductive / resistive loads |
| Controlled Devices | Relays, solenoids, contactors, lamps |
| Switching Mode | Electronic solid-state switching |
| Diagnostic Indicators | 16 channel LED status indicators |
| Channel Isolation | Non-isolated between channels |
4.3 Environmental Parameters
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 to 55 °C |
| Storage Temperature | -40 to 85 °C |
| Humidity | 5% to 95% non-condensing |
| Vibration Resistance | up to 5 g (10–500 Hz) |
| Shock Resistance | up to 30 g |
| Protection Class | Industrial IP20 enclosure |
4.4 Mechanical Parameters
| Parameter | Specification |
|---|---|
| Width | 94 mm |
| Height | 94 mm |
| Depth | 69 mm |
| Weight | approx. 0.11 kg |
| Mounting Type | DIN rail modular system |
| Wiring Interface | Terminal base connection |
| Housing Type | Open-style industrial module |
5. Product Applications
The 1794-OA16 is commonly used in industrial systems requiring reliable AC switching control:
- Industrial machinery control panels
- Conveyor and material handling systems
- Packaging equipment automation
- Pump and motor auxiliary control
- HVAC system actuator control
- Industrial lighting and alarm systems
- Solenoid valve control systems
- Process plant switching systems
- Energy distribution auxiliary control
- Factory automation output control
It is particularly effective in environments where distributed AC load control is required across multiple machine sections.
6. Product Advantages
6.1 High Channel Density
16 AC output channels allow efficient control of multiple field devices within a compact module.
6.2 Industrial AC Switching Capability
Designed specifically for 120V AC industrial load control applications.
6.3 Reliable Distributed Control
Integrates into remote I/O systems, reducing long-distance wiring complexity.
6.4 Built-in Channel Diagnostics
LED indicators provide immediate visual status for each output channel.
6.5 Rugged Industrial Design
Suitable for harsh environments with vibration and electrical noise resistance.
6.6 Flexible Load Handling
Supports inductive and resistive AC loads such as relays and solenoids.
6.7 Modular Maintenance
Allows fast replacement without redesigning the full control system.
7. Product Series Overview
- Series Name: FLEX I/O 1794 Series
- System Type: Distributed automation I/O platform
- Function:
- Digital input/output expansion
- Remote field device control
- Modular industrial system integration
- Key Features:
- Flexible modular expansion
- Mixed signal support (AC/DC, analog, specialty modules)
- Industrial-grade durability
- Scalable architecture for automation systems
8. Recommended Related Models (Same Series or Functional Alternatives)
| Model | Description | Function | Voltage | Weight (kg) |
|---|---|---|---|---|
| 1794-OB16 | 16-point DC output module | DC output switching | 24V DC | 0.16 |
| 1794-IV16 | 16-point DC input module | Digital input | 24V DC | 0.09 |
| 1794-OB32P | 32-point protected output module | DC output | 24V DC | 0.28 |
| 1794-IA8 | AC input module | AC signal input | 120/240V AC | 0.18 |
| 1794-IE8 | Analog input module | Current measurement | 4–20 mA | 0.18 |
9. Popular Models from Same System Ecosystem
| Model | Description | Function Type | Voltage | Weight (kg) |
|---|---|---|---|---|
| 1794-IB16 | Digital input module | Signal input | 24V DC | 0.15 |
| 1794-OB16 | Digital output module | Output control | 24V DC | 0.16 |
| 1794-IE8XT | Extended analog input module | Measurement input | 4–20 mA | 0.20 |
| 1794-OF8 | Analog output module | Signal output | 4–20 mA | 0.19 |
| 1794-AENTR | Ethernet communication adapter | Network interface | 24V DC | 0.22 |
10. Summary
The 1794-OA16 is a robust industrial AC output module designed for distributed control of 120V AC loads in automation systems.
Its key strengths include:
- 16-channel AC output capability
- Stable industrial-grade switching performance
- Compact modular architecture
- Reliable field device control
- Easy system integration and maintenance
It is widely used in industrial automation environments where distributed AC load control is required with high reliability and flexible system design.