Product Overview

The Woodward 9905-867 is a high-precision electronic governor designed for speed and load regulation in reciprocating engines. It uses microcontroller-based logic to maintain engine frequency across power generation, marine, and industrial applications. It functions as a central control unit in both standalone and multi-engine synchronized setups.

Technical Specifications

Engineering Advantages

• Dual-Channel Speed Sensing: Redundant speed sensor inputs prevent engine failure due to a single sensor malfunction.

• Dynamic Load Sharing: Adjustable settings for speed droop and load sharing enable seamless paralleling of multiple engines.

• High-Speed Actuator Response: Real-time updates to actuator outputs maintain tight frequency tolerances, crucial for sensitive equipment.

• Industrial-Grade Relay Isolation: SPDT relays provide dry contact outputs while isolating internal logic from high-voltage circuits, improving EMC.

• Robust Thermal Performance: The chassis efficiently dissipates heat across the operating range, ensuring stable performance in high-temperature engine rooms.

FAQs

Is this Woodward 9905-867 governor a brand new unit?

Yes, we supply 100% brand new and original Woodward 9905-867 modules in factory-sealed packaging to guarantee reliability and long service life.

Can the 9905-867 control both analog and digital speed sensors?

Yes, the module accepts both analog and digital speed sensor signals, providing flexibility for various application requirements.

Does this governor support load sharing between different engine sizes?

Yes, the adjustable speed droop and load signal inputs allow for load sharing between engines of varying capacities.

How do the built-in diagnostics assist in maintenance?

Integrated diagnostic routines monitor hardware health, detecting issues like speed signal loss or CPU errors. Alerts are sent via relay outputs to reduce troubleshooting time.