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The 5501-469 is a high-performance CPU module from Woodward, designed for modular industrial control systems. This variant is labeled “W/O LL Memory” (without low-level memory), providing a streamlined, high-speed processing engine for applications where external...
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The 5501-469 is a high-performance CPU module from Woodward, designed for modular industrial control systems. This variant is labeled “W/O LL Memory” (without low-level memory), providing a streamlined, high-speed processing engine for applications where external memory management or specific cybersecurity architectures are employed.
It coordinates complex governing, engine, and power management tasks, serving as the primary logic solver. Ruggedized for high-heat, high-vibration environments, the module ensures reliable operation in turbine skids, engine rooms, and other demanding industrial settings.
| Specification | Description |
|---|---|
| Model Series | Woodward CPU Series |
| Part Number | 5501-469 |
| Memory Architecture | CPU without Low-Level (LL) Memory |
| Supply Voltage | 24 VDC nominal |
| Power Consumption | 5 W |
| Digital Inputs | 8 discrete channels |
| Analog Inputs | 4 precision channels |
| Networking Ports | Ethernet and RS485 (Modbus or peer-to-peer) |
| Operating Temperature | -20°C to +60°C (-4°F to +140°F) |
| Dimensions | 120 mm x 100 mm x 40 mm |
| Weight | 0.9 kg |
Woodward MicroNet or Peak 150 control systems requiring modular CPU redundancy.
Industrial gas turbines and marine engine control systems demanding high uptime.
Systems requiring robust Ethernet/serial communication for remote monitoring.
What does “W/O LL Memory” mean?
Indicates the CPU does not include low-level memory. Operating system and application data are managed via external memory tiers or separate modules. Common in legacy Woodward setups or high-speed data flushing applications.
Is the 5501-469 hot-swappable?
Not recommended. Always power down the 24 VDC supply before replacement to prevent data corruption or communication bus transients, even if the rack supports modular CPU replacement.
