Description
Woodward 8440-1809
Technical Specifications
- Signal Processing: Supports dual-mode input of current (4-20mA) and voltage (0-5/10V) with true RMS detection technology.
- Resolution & Sampling: Features 12-bit resolution with a sampling period as low as 50ms.
- Communication: Built-in CAN network (SAE-J1939), Modbus RTU slave, and CANopen for RP-3500 remote panels.
- Expansion: Supports LogicsManager™ programmable logic and up to 32 generator sets for parallel load sharing.
Functional Features
- Parallel Synchronization: Integrates automatic synchronization, phase matching, frequency sliding control, and circuit breaker management.
- Redundant Protection: Features fully programmable protection functions for engines and generators, ensuring safety in critical environments.
- Load Sharing: Supports proportional load sharing in isochronous or droop mode for up to 32 units, independent of individual capacity.
- Programmable Logic: Built-in LogicsManager™ allows custom control logic integration without requiring an external PLC.
Application Scenarios
Widely used in emergency backup power for data centers and hospitals, distributed generation, microgrids, combined heat and power (CHP) plants, and isolated power supply systems.
Performance Parameters
- Safety Certification: Complies with SIL 3 (IEC 61508/62061) and AK6 certification standards.
- Environmental Rating: Operating temperature range from -20℃ to 60℃, with IP protection ratings ranging from IP20 to IP67 depending on configuration.
- Compliance: Meets international standards including ISO 8528 and IEC 60034, alongside CE, UL/cUL, CSA, and ABS certifications.
Material Composition
Enclosed in a ruggedized industrial housing designed for high electromagnetic interference (EMC) immunity. Internal components utilize industrial-grade silicon and conformal-coated printed circuit boards to withstand harsh environments.
Structural Characteristics
- Form Factor: Rack-mountable module supporting up to 1472 I/O points in expanded configurations.
- User Interface: Features an integrated operator control panel with a two-line text display (24 characters per line) for local parameter adjustment.
- Connectivity: Equipped with RS-232 and Ethernet interfaces for seamless DCS/PLC integration.
Working Principle
The module continuously monitors true RMS voltage and current from the generator and bus. It processes this data using high-speed microprocessors to execute protection algorithms, manage engine ECU communication via CAN, and calculate precise synchronization points. It then commands the circuit breaker and governor to safely parallel the generator with the grid or other units.
Installation Requirements
- Configuration must be performed using Woodward ToolKit software via a PC or laptop.
- Must be securely rack-mounted with proper grounding compliant with EN 60204-1.
- Strict anti-static operating procedures are required during installation to prevent component damage.
Usage Precautions
- Perform monthly self-test commands to verify AD linearity and clean terminal contacts with anhydrous ethanol every six months.
- The internal battery (e.g., CR2477N) has a lifespan of approximately 6 years and must be replaced within the redundancy protection window to avoid single-point failures.
- Utilize diagnostic tools to monitor capacitor degradation, which can be predicted up to 30 days in advance.
