Description
- The WOODWARD 5466-411 is a high-performance central processing unit (CPU) module designed for the MicroNet Triple Modular Redundant (TMR) control system. Powered by a Motorola PowerPC 603e microprocessor, this module acts as the “brain” of the control rack, executing complex algorithms for the regulation of large gas and steam turbines. It is specifically engineered to handle the high-speed processing requirements of deterministic control, managing real-time data exchange across the VME backplane while maintaining synchronized communication with redundant CPU counterparts. This ensures maximum system availability and safety for critical prime mover applications.
Product Parameters
- Brand: Woodward
- Model Number: 5466-411
- Processor: Motorola PowerPC 603e (166 MHz)
- Memory: 4 MB Flash / 8 MB DRAM
- Communication: RS-232 and RS-485 Serial Ports
- System Compatibility: MicroNet TMR / MicroNet Simplex
- Interface: VMEbus Standard
- Input Voltage: 5 VDC (Supplied via Backplane)
- Current Draw: Typically 3.5 A
- Operating Temperature: 0°C to +55°C
- Status Indicators: LED display for Run, CPU Fault, and VME Fault
This CPU module provides the essential computational power and logic synchronization needed to prevent system failure in high-availability environments, utilizing Woodward’s proprietary architecture for fault-tolerant operation.
Comparison with Similar Models
The 5466-411 is part of the evolved MicroNet CPU family and is distinguished from the 5466-409 or older 040-based processors by its significantly higher clock speed and larger memory capacity. While the 5466-1000 series CPUs offer newer Ethernet-based architectures, the 5466-411 remains the standard for systems requiring high-speed serial communication and VME-based synchronization. Furthermore, unlike Simplex-specific CPUs, the -411 version contains the specialized hardware logic required for TMR voting, making it a critical component for systems where 100% uptime is required.
Operation Tips
- Initial Boot: Observe the front-panel alphanumeric LED display during power-up; a successful boot sequence should culminate in a “RUN” or “OK” status.
- TMR Synchronization: In a Triple Modular Redundant setup, ensure that all three CPU modules are running the identical software version to prevent synchronization errors and accidental trips.
- Cable Shielding: When utilizing the RS-232 or RS-485 ports for HMI connection, use high-quality shielded cables to prevent electromagnetic interference from disrupting the processor logic.
- Handling: This module contains highly sensitive surface-mount components; always store in an anti-static bag and use a grounded wrist strap during installation to prevent ESD damage to the PowerPC chip.
