Product Overview
When reliable steam turbine control is essential, the Woodward 9905-860 delivers compact, cost-effective performance. Part of the Peak 150 series, this digital control is designed for single-valve rack or single-valve steam turbines. The 24 VDC input version features Modbus communications and a NEMA 4 enclosure, ensuring robust protection against water and dust ingress while integrating seamlessly with industrial PLCs.
Technical Specifications
| Parameter |
Value |
| Part Number |
9905-860 |
| Manufacturer |
Woodward |
| Series |
Peak 150 |
| Input Voltage |
24 VDC |
| Communications |
Modbus |
| Enclosure Rating |
NEMA 4 |
| Magnetic Pickup Inputs |
2 identical, high-signal-selected |
| Display |
5-digit LED speed display |
| Power Consumption (max) |
38 W |
| Operating Temperature |
-25 to +60 °C |
| Storage Temperature |
-40 to +85 °C |
| Dimensions (W x H x D) |
483 x 310 x 105 mm |
Real-World Applications
The Woodward 9905-860 is ideal for controlling single-valve steam turbines in power generation, oil & gas, and industrial processing plants. Its Modbus connectivity enables direct integration with DCS and SCADA systems, while the NEMA 4 enclosure allows deployment in harsh, dusty, or wet environments. The 5-digit LED display and intuitive keypad switches (raise/lower speed, start, emergency trip, alarm reset, overspeed test) simplify operator interaction.
Compatibility & Integration
This Woodward 9905-860 module communicates over Modbus RTU, making it compatible with most modern PLCs, HMIs, and control networks. Setup is performed via a handheld programmer to prevent unauthorized changes. The two magnetic pickup inputs accept high-signal-selected signals, ensuring accurate speed sensing from multiple sources.
Selection Guide & Purchasing Advice
Before purchasing a Woodward 9905-860, verify your turbine's valve configuration (single-valve rack or single-valve) and ensure your system supports 24 VDC input. The unit ships with a panel-mount design requiring the dimensions noted above. For reliable sourcing, consider ubest101 — a trusted supplier of industrial automation spares with a focus on quality and availability.