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The 1756-OA8E is a digital AC output module designed for industrial automation systems requiring reliable load switching, fast response performance, and robust electrical protection. It belongs to the ControlLogix platform and is widely used in factory automation environments where stable AC control signals are needed for actuators, relays, and industrial devices.
This module provides 8 electronically fused AC output channels. Each channel is designed to switch AC loads safely while protecting the system against overload conditions. The built-in electronic fusing function reduces the need for external protection devices and improves system reliability.
The 1756-OA8E is installed in a ControlLogix chassis and integrates directly with PLC processors, communication modules, and other I/O modules. It is designed for continuous operation in industrial environments with electrical noise, vibration, and long production cycles.
It is commonly applied in packaging systems, automotive production lines, material handling systems, conveyor control systems, and general industrial automation where AC load switching is required.
| Item | Description |
|---|---|
| Brand | Industrial Automation Brand |
| Product Platform | ControlLogix |
| Product Type | AC Digital Output Module |
| Main Function | AC Load Switching Control |
| Installation Method | Chassis Mount |
| Output Technology | Electronic Fused Triac Output |
| Application Category | Industrial Automation |
| System Architecture | Modular PLC System |
The ControlLogix series is a high-performance modular automation platform designed for industrial systems requiring scalable control, fast processing, and integrated multi-function automation capability.
The platform supports:
Key characteristics include:
The 1756-OA8E belongs to the AC output module family within this platform and is optimized for reliable AC load switching in industrial environments.
It is widely used in:
| Parameter | Specification |
|---|---|
| Model | 1756-OA8E |
| Product Type | Digital AC Output Module |
| Series | ControlLogix |
| Number of Outputs | 8 Channels |
| Output Voltage Range | 74–132V AC (typical) |
| Output Frequency | 47–63 Hz |
| Output Type | Electronically Fused Triac |
| Output Groups | 2 Groups (4 channels each) |
| Maximum Current per Point | 2 A @ 60°C |
| Maximum Current per Module | 8 A @ 30°C / 4 A @ 60°C |
| Surge Current | Up to 20 A (short duration) |
| Off-State Leakage Current | ≤ 3 mA |
| Output Delay Time | 9–11 ms |
| Isolation Voltage | 125 V continuous (group isolation) |
| Backplane Current @ 5.1V DC | Approx. 0.20 A |
| Backplane Current @ 24V DC | Approx. 0.25 A |
| Power Dissipation | Approx. 5.5 W |
| Thermal Dissipation | Approx. 18.7 BTU/hr |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Shock Resistance | Industrial grade |
| Vibration Resistance | Industrial grade |
| Wiring Method | Removable Terminal Block |
| Cooling Method | Passive cooling |
| Dimensions | 14.5 × 5.6 × 14.0 cm |
| Weight kg( ) | 0.45 kg |
The module uses electronic fusing technology to protect each output channel from overload and short-circuit conditions. This improves system safety and reduces downtime caused by external fuse replacement.
The module provides 8 independent AC output channels, allowing control of multiple industrial devices such as solenoids, relays, and indicators from a single module.
With a response time around 9–11 ms, the module supports fast and stable switching of AC loads, improving machine coordination and automation efficiency.
The module is designed for harsh industrial environments, ensuring stable performance under vibration, electrical noise, and continuous operation conditions.
It integrates seamlessly into ControlLogix systems and works with PLC processors, communication modules, and other I/O modules for flexible system design.
Electronic fusing reduces external protection components and simplifies system design.
Provides reliable switching for industrial AC devices without performance degradation.
Reduces cabinet space requirements and simplifies installation layout.
Works smoothly within ControlLogix architecture for flexible automation design.
Improves overall machine operation speed and process efficiency.
Designed for continuous industrial use with low maintenance requirements.
Used for conveyor control, sealing machines, labeling systems, and automated packaging lines.
Applied in assembly systems, robotic stations, and transfer line equipment.
Controls conveyor belts, warehouse automation, and logistics systems.
Used in industrial systems requiring reliable AC switching control.
Controls pumps, valves, and processing equipment in automated production lines.
Used for synchronized machine control and auxiliary AC device switching.
| Capability | Benefit |
|---|---|
| Electronic Fused Outputs | Improved protection |
| 8-Channel Design | Efficient control integration |
| Fast Switching Time | Better machine response |
| Modular Architecture | Easy system expansion |
| Stable AC Output | Reliable operation |
| Compact Structure | Space-saving installation |
| Industrial Durability | Reduced maintenance |
| High Compatibility | Flexible integration |
| Model | Type | Channels | Output Type | Dimensions | Weight kg( ) | Feature |
|---|---|---|---|---|---|---|
| 1756-OA8 | AC Output Module | 8 | AC | 14.5 × 5.6 × 14.0 cm | 0.34 kg | Standard AC output |
| 1756-OA16 | AC Output Module | 16 | AC | 14.5 × 5.6 × 14.0 cm | 0.35 kg | Higher channel density |
| 1756-OA16I | Isolated AC Output Module | 16 | AC Isolated | 14.5 × 5.6 × 14.0 cm | 0.37 kg | Channel isolation design |
| 1756-OA8I | Isolated AC Output Module | 8 | AC Isolated | 14.5 × 5.6 × 14.0 cm | 0.36 kg | Noise resistance improved |
| 1756-OW16I | Relay Output Module | 16 | Relay | 14.5 × 5.6 × 14.0 cm | 0.36 kg | Electromechanical isolation |
| Model | Type | Function | Dimensions | Weight kg( ) | Advantage |
|---|---|---|---|---|---|
| 1756-L81E | PLC Processor | High-speed control | 14.5 × 5.6 × 14.0 cm | 0.45 kg | High processing power |
| 1756-EN2TR | Ethernet Module | Industrial networking | 14.5 × 5.6 × 14.0 cm | 0.29 kg | Stable communication |
| 1756-IB16 | Input Module | Digital input | 14.5 × 5.6 × 14.0 cm | 0.27 kg | Reliable signal reading |
| 1756-IF16 | Analog Module | Signal processing | 14.5 × 5.6 × 14.0 cm | 0.31 kg | High precision |
| 1756-PA75 | Power Module | System power supply | 14.5 × 5.6 × 14.0 cm | 0.90 kg | Stable power output |
| Item | Recommendation |
|---|---|
| Wiring check | Inspect terminals regularly |
| Dust removal | Clean cabinet periodically |
| Temperature control | Ensure proper ventilation |
| Output testing | Verify switching performance |
| Power stability | Maintain stable supply |
| Mechanical stress | Reduce vibration impact |
The 1756-OA8E is a reliable 8-channel AC output module with built-in electronic fusing protection, designed for industrial automation systems requiring stable AC load switching and high operational reliability. Its fast response, compact structure, and modular integration capability make it suitable for a wide range of manufacturing and process control applications, especially where safety and stability are critical.