Woodward 9905-864 Peak 150 Digital Steam Turbine Control
Manufacturer: Woodward
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Part Number: 9905-864
Condition：New with Original Package
Product Type:
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Country of Origin: GERMANY
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Woodward 9905-864 Peak 150 Digital Control provides high-precision speed regulation, synchronization, and load sharing specifically for steam turbine applications. This microprocessor-based system manages complex turbine dynamics with deterministic logic, replacing aging mechanical or analog governors. We supply this unit as 100% Brand New factory stock, encased in a rugged NEMA 4X enclosure to withstand the corrosive, high-moisture environments typical of power plants and marine engine rooms. It executes critical functions such as soft load transfers and torque limiting to protect your turbine's mechanical integrity during grid synchronization.
Technical Specifications
The 9905-864 utilizes a universal power architecture and industrial-grade I/O to interface with existing turbine infrastructure.
| Parameter | Details |
| Manufacturer | Woodward, Inc. (USA) |
| Model / Part Number | 9905-864 |
| Series | Peak 150 Digital Control |
| Power Input | AC/DC Universal Supply Support |
| Remote Speed Input | 4–20 mA or 1–5 VDC |
| Speed Output | Configurable 4–20 mA or 0–1 mA |
| Enclosure Rating | NEMA 4X (Dust, Water, and Corrosion Resistant) |
| Operating Temperature | –25 °C to +60 °C |
| Communication | RS-232, RS-422 Serial Ports |
| Weight | 3.5 kg (7.7 lbs) |
| Dimensions | 19" W × 12.2" H × 4.1" D (483 × 310 × 105 mm) |
Engineering Advantages
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NEMA 4X Protection for Harsh Decks: The 9905-864 features a specialized NEMA 4X housing. This enclosure shields sensitive digital electronics from the steam leaks, saltwater spray, and coal dust common in turbine galleries, extending the hardware lifecycle significantly.
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Adaptive Speed Sensing: Woodward’s proprietary algorithms allow the Peak 150 to self-adjust to speed-sensing variations. This feature dampens signal jitter and prevents governor "hunting," ensuring a rock-steady RPM even during sudden load rejection.
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Soft Load Transfer Logic: The controller executes smooth transitions when connecting a generator to the utility grid. By controlling the steam valves with ramped demand signals, it eliminates the mechanical stress and current spikes associated with abrupt synchronization.
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Universal Power Supply Integration: The 9905-864 operates on both AC and DC universal power inputs. This allows for direct installation into various plant architectures without the need for additional voltage converters or dedicated power conditioners.
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Serial Diagnostics & Integration: Integrated RS-232 and RS-422 ports enable direct connection to plant SCADA systems or local HMIs. Engineers can monitor turbine health, torque limits, and synchronization status in real-time.
FAQs
Q: Can I use the 9905-864 for gas turbines as well?
A: No. The Peak 150 9905-864 contains specialized logic optimized for the thermal and mechanical response curves of steam turbines. For gas turbine applications, please contact us for the appropriate Woodward MicroNet or Atlas series controllers.
Q: Does the unit support remote control from a Distributed Control System (DCS)?
A: Yes. The 9905-864 accepts standard 4–20 mA or 1–5 VDC analog signals for remote speed or load setpoints. This allows your central control room to manage the turbine's output seamlessly.
Q: What happens if the speed sensor signal is lost?
A: The Peak 150 includes built-in failsafe diagnostics. Upon detection of a loss-of-speed signal, the controller executes a configurable emergency shutdown or alarm to prevent an overspeed condition.
Q: Is the NEMA 4X enclosure suitable for outdoor installation?
A: Yes. The NEMA 4X rating ensures protection against windblown dust and rain, as well as hose-directed water. It is perfectly suited for exposed industrial environments or marine applications.