Description

Technical Specifications
Product Model	8440-2189
Manufacturer	Woodward
Product Type	Digital Speed Control Module
Input Voltage	18-32 VDC
Operating Temperature	-40°C to +85°C
Communication	RS-232/485, CAN bus
Speed Range	0-4000 RPM (adjustable)
Control Modes	Speed, Load, Pressure
Accuracy	±0.1% of setpoint
Dimensions	200 x 150 x 50 mm
Mounting	DIN rail or panel
Minimum Order	1 unit
Warranty	1 year

Main Features and Advantages

The Woodward **8440-2189** delivers precision engine and turbine control through advanced PID algorithms that maintain setpoints within ±0.1% accuracy. Its ruggedized design withstands extreme temperatures (-40°C to +85°C) and high-vibration industrial environments. Dual CAN bus interfaces enable seamless integration with engine management systems and Woodward’s proprietary NetSync™ networks for multi-engine synchronization. Key advantages include programmable failsafe modes that prevent overspeed conditions, adaptive gain tuning that compensates for load variations, and modular expansion capabilities for analog/digital I/O. Real-time diagnostics through LED indicators and PC software reduce troubleshooting time by 40% compared to analog governors.

Application Fields

The **8440-2189** excels in mission-critical power generation applications where precise speed control is paramount. For prime power generators, it governs engine speed during grid synchronization and load sharing operations. In LNG compressor stations, the module maintains turbine speeds within ISO 10439 specifications to prevent surge conditions. Marine vessels utilize its CAN-based integration with propulsion control systems for dynamic positioning accuracy. Other key applications include pump jack controls in remote oil fields, biogas engine management at wastewater treatment plants, and backup generator sequencing for data centers. Its vibration immunity makes it ideal for mobile applications like mining equipment and offshore power modules.

Related Products

Complementary Woodward products include the **8440-1055** basic speed control module for simpler applications and the

**8441-640** I/O expansion module for additional sensor/actuator channels. For multi-engine synchronization,

**8440-2277** dual-engine controller provides advanced load sharing. Legacy system users may consider the **2301D** analog governor as a transitional solution. Modern alternatives include the **ProAct™ XT** series with Ethernet/IP connectivity and the **NetSync II (9907-164)** for generator paralleling. For synchronizer applications, the **Synchronizer 300 (8230-1240)** offers seamless grid connection capabilities.

Installation and Maintenance

Installation preparation: Verify engine compatibility and mounting orientation per Woodward TN-501 guidelines before installing the **8440-2189**. Ensure all shielded wiring for analog signals follows single-point grounding practices. Maintenance procedures: Calibrate magnetic speed sensors annually using Woodward P/N 8271-1000 test kit. Monitor heat sink temperatures during operation and clean ventilation ports quarterly in dusty environments. For firmware updates, use Woodward ToolKit software via RS-232 port with backup battery connected. Replace CR2032 configuration backup battery every 3 years to prevent parameter loss during outages.

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