Woodward 9905-658 Digital Speed Control Unit

Description

The Woodward 9905-658 is a digital speed control unit engineered for precise and stable engine governing in industrial prime mover applications. It is part of the 2301D series and offers enhanced control, flexibility, and reliability for diesel and gas engines. This model supports load sharing, remote speed setting, and system protection functions, making it suitable for both isolated and parallel generator set configurations.

Technical Specifications

• Designed for use with single or multiple generator sets

• Compatible with both diesel and gaseous-fueled engines

• Power supply: 18–40 VDC nominal

• Power consumption: less than 15 W

• Operating temperature range: −40 °C to +70 °C (−40 °F to +158 °F)

• Humidity: 95% RH, non-condensing

• Speed sensing range: 31–10,000 Hz

• Speed control range: ±200 Hz adjustment

• Analog input for remote speed/load setting: 0–5 VDC or 4–20 mA

• Start fuel limit and idle speed control included

• Load sharing via Woodward analog or digital load sharing lines

• Communications: RS-232/RS-485 Modbus RTU for configuration and monitoring

• Mounting: Panel or DIN rail

• Dimensions: approx. 265 mm × 165 mm × 65 mm (10.43 in × 6.50 in × 2.56 in)