Woodward 9905-864 Peak 150 Digital Steam Turbine Controller

Overview

The Woodward 9905-864 is a Peak 150 Digital Steam Turbine Controller designed for precise speed control and protection of single-valve steam turbines. It operates on both AC and DC power inputs. The controller features a corrosion-resistant, watertight NEMA 4X enclosure, making it ideal for harsh industrial environments. It supports fast trip response, remote configurability, and reliable turbine speed regulation.

Technical Specifications

• Model: 9905-864

• Series: Peak 150 Digital Control

• Power Input: 90–150 VDC or 88–132 VAC (47–63 Hz)

• Enclosure Rating: NEMA 4X (corrosion-resistant, watertight)

• Analog Inputs: 4–20 mA or 1–5 VDC (Remote Speed Setting Signal)

• Actual Speed Output: Scalable, 4–20 mA or 0–1 mA

• Configurable Readout Output: Scalable, 4–20 mA or 0–1 mA

• Speed Range: 0–25,000 RPM

• Accuracy: ±0.05% of measured value

• Trip Response Time: Less than 15 milliseconds

• Output Relays: 2 × SPDT (5 A @ 250 VAC)

• Communication: RS-485 Modbus RTU

• Display & Interface: Front panel keypad with LED indicators

• Mounting: Panel-mounted

• Dimensions: 483 mm × 310 mm × 105 mm (19" × 12.2" × 4.1")

• Weight: 2.5 kg

• Operating Temperature: –40°C to +85°C

• Certifications: IEC 61508 SIL 2, ATEX Cat 3, UL508, IP66