Description
Product Overview
The Woodward 9905-990 is a core CPU processing module engineered for the MicroNet and MicroNet Plus digital control platforms. It acts as the central execution engine for industrial steam, gas, and hydro turbine speed control algorithms. By running complex governor tasks, actuator fuel calculations, and protective limiting logic simultaneously, this processing card ensures deterministic control down to millisecond intervals for high-availability energy assets.
Technical Specifications
For equipment procurement and physical rack auditing, match your system chassis parameters against the core metrics below:
| Parameter | Value |
| Model Family | MicroNet Digital Control System |
| Part Number | 9905-990 |
| Product Type | CPU Processor Module |
| Processor Architecture | High-speed dedicated industrial RISC platform |
| Backplane Interfacing | MicroNet VME-bus standard format |
| Communication Layers | Serial RS-232/RS-485, Ethernet capabilities |
| Configuration Software | Woodward GAP (Graphical Application Program) |
| Mounting Envelope | Dedicated MicroNet chassis slot configuration |
Operational Realities & Lifecycle Strategy
From a plant-wide asset longevity perspective, treating the 9905-990 processor as an afterthought compromises your plant uptime matrix. Because this card coordinates critical governor loops, a sudden hardware failure will trip the prime mover instantly. Due to the limited production windows of older MicroNet series card configurations, factory lead times fluctuate severely.
- Stocking Recommendation: Min 1 unit / Max 2 units on-site for facilities running non-redundant MicroNet frames.
- Buffer Stock Strategy: Store inside original anti-static packaging within a climate-controlled vault to safeguard the onboard flash memory cells from long-term thermal breakdown.
- Not Recommended For: Green field setups requiring modern IEC 62443 native cybersecurity network filtering without upstream external firewall isolation.
