The DEIF PCM4.4 is a high-performance distributed controller designed for the AWC 400 (Advanced Wind Control) system architecture. While the PCM4.3 typically serves as the main CPU in an AWC 400 rack, the PCM4.4 is engineered to function as an intelligent expansion unit or distributed I/O controller. It facilitates seamless communication between the main application and decentralized field devices via the ARCNET bus, allowing for scalable control strategies in large-scale wind power plants and complex marine electrical systems.
Product Specifications
Technical Parameters
- Model Identification: PCM4.4 (AWC 400 Series)
- Manufacturer: DEIF
- Function: Distributed I/O and Fieldbus Controller
- Communication Protocols:
- ARCNET: Used for high-speed synchronization with the main PCM4.3 controller (2.5 Mbit).
- CAN bus: Multiple independent lines for fieldbus integration (125/250 kbps).
- RS-485: Serial communication for peripheral device interfacing.
- Operating System: Linux-based industrial kernel.
- Processor: High-speed microprocessor for parallel task processing.
- I/O Support: Integrated digital inputs and relay outputs for local control logic.
Physical Datasheet
- Dimensions: 8TE width (40.64 mm) x standard AWC 400 height.
- Weight: 0.46 kg (approximate).
- Country of Origin: Denmark.
- Operating Temperature: -25°C to +70°C.
- Vibration Resistance: DNV Class A+C compliant (suitable for wind turbine nacelles).
- Protection Class: IP20.
Application Fields
The PCM4.4 is specifically designed for environments requiring robust, decentralized intelligence:
- Wind Turbine Control: Acting as a distributed node to manage pitch control, nacelle sensors, and cooling systems.
- Microgrid Management: Coordinating distributed energy resources (DER) and load distribution.
- Marine Automation: Managing power management system (PMS) logic across redundant shipboard networks.
- Industrial Plants: Serving as a fieldbus gateway in chemical or pharmaceutical processing lines.
Product Usage Instructions
- System Integration: The PCM4.4 is usually connected to a main PCM4.3 module via an ARCNET cable (electrical or optical). Ensure the network topology follows DEIF’s specifications for distributed racks.
- Mounting: Install the module into a spare slot of the AWC 400 rack. Ensure the grounding clips on the module’s aluminum casing make solid contact with the rack frame to reduce EMI.
- Address Configuration: Each PCM4.4 in a distributed network must have a unique ID. This is typically set via hardware dip switches or through the DEIF Utility Software (USW).
- Wiring: Use shielded twisted-pair cables for all CAN and RS-485 connections. Terminate the last node on each bus with a 120-ohm resistor to ensure signal integrity.
- Firmware Updates: Always ensure the PCM4.4 firmware version is compatible with the application software running on the main controller to prevent synchronization errors.
Q&A – Frequently Asked Questions
Q: Can the PCM4.4 run a standalone PLC application? A: While it has internal processing power, it is primarily designed to execute sub-routines or I/O management under the direction of a main PCM4.3 controller.
Q: What is the difference between PCM4.3 and PCM4.4? A: The PCM4.3 is the “Master” or Server module that holds the entire plant application, while the PCM4.4 is the “Distributed” or Client module used to expand the system’s I/O reach over long distances.
Q: How can I verify the status of the ARCNET communication? A: Check the Tx/Rx LEDs on the front panel. Rapid flashing indicates active data exchange, while a solid light or no light may indicate a bus fault or incorrect termination.
Q: Where can I get pricing and availability for the PCM4.4? A: For official quotes, 12-month warranties, and worldwide shipping, visit our DEIF PCM4.4 Distributed Controller Inquiry Portal.
Product Related News
In 2026, the DEIF PCM4.4 continues to play a pivotal role in the “Smart Wind” initiatives across Europe and Asia. As wind turbines increase in size and complexity, the ability of the PCM4.4 to handle decentralized processing is crucial for reducing the wiring complexity within the turbine tower. Recent industry white papers highlight that using the PCM4.4 in a distributed architecture can reduce installation costs by up to 20% compared to centralized systems. Furthermore, with the rise of hybrid power systems, the PCM4.4 is increasingly being used to bridge legacy generator sets with modern battery storage systems, providing a reliable and proven hardware platform for green energy transitions.
