Woodward 8440-2028 Digital I/O Expansion Module

The Woodward 8440-2028 Digital I/O Expansion Module is engineered to extend the digital control capabilities of industrial engines and generator systems. It supports a wide input voltage range of 100–240 VAC, making it compatible with diverse power environments. The module can handle output currents up to 25 A, ensuring reliable switching of connected loads. Equipped with 8 SPDT relay contacts, it enables flexible and precise digital control. Communication is fully supported via MODBUS and CANopen protocols, allowing seamless integration into modern automation networks. With a maximum power consumption of 30 W and an operating temperature range from -40°C to +70°C, the 8440-2028 is built for robust performance in demanding industrial conditions.This expansion module communicates with the host controller via a CAN bus interface, allowing real‑time transmission of digital statuses and remote control of outputs.

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Model: 8440-2028
Product Type: Digital I/O Expansion Module
Series: External I/O Expansion (IKD1)
Input Voltage Range:100-240 VAC
Output Current Capacity:Up to 25 A
Communication Protocol Support:MODBUS, CANopen
Relay Contacts:8 SPDT
Power Consumption:Max 30W
Enclosure Rating:IP65
Discrete Input Channels: 8 configurable digital inputs (NO/NC)
Output Channels: 8 Form C relay outputs (dry contacts)
Communication Interface: CAN bus (250 kbps) with configurable CAN ID
Relay Control: Controlled remotely via host controller over CAN bus
Operating Temperature Range:-40°C to +70°C
Storage Temperature: –40 °C to +85 °C
Humidity: Up to 95 % RH (non‑condensing)
Mounting: Panel or cabinet mounting compatible

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• Scalable Architecture: The 8440-2028 allows for easy system growth. By adding this hardware, engineers can expand signal monitoring and actuator control far beyond the native limits of the host controller.
  
• Centralized Command Structure: While the physical wiring is distributed, the relay outputs of the 8440-2028 are fully controlled by the main logic unit via CAN bus commands, ensuring unified decision-making for all connected machinery.
• Seamless CAN Bus Connectivity: Designed for high-speed communication, the 8440-2028 uses a robust CAN interface to link with Woodward easYgen or GCP series units. This ensures that all digital data exchange and output commands occur in real-time across the network.
• Precision Logic Filtering: To maintain stability in electrically "noisy" industrial environments, the 8440-2028 features configurable input debounce filtering. This allows for customized response times and prevents false triggers in sensitive sequences.

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1. Auxiliary Equipment Interface: Integrates with remote sensors, switches, and actuators driving auxiliary functions in complex automation networks.
   
2. CAN‑Bus Distributed Control Networks: Suitable for applications leveraging CAN bus communication for scalable digital I/O distribution.
3. Oil & Gas Control Systems: Provides additional discrete control points for equipment logic and safety interlocks.
4. Power Generation Facilities: Ideal for turbine, engine, or power plant control where distributed I/O points are needed.
5. Generator Set Control & Monitoring: Expands digital I/O on Woodward easYgen controllers for large genset applications, enabling additional alarms, fault inputs, and control outputs.

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➪➪For more product information or other inquiries, please contact our manager, Vicky, at sales7@apterpower.com.