Woodward 8200-186 723PLUS Digital Speed Control

Woodward 8200-186 is a high-precision digital control system component, specifically part of the 723PLUS Digital Speed Control family.

This series is globally recognized for its ability to manage reciprocating engines (gas, diesel, or dual-fuel) and gas or steam turbines with industrial-grade reliability.

## Introduction

The Woodward 8200-186 is a 723PLUS Digital Speed Control configured for Low Voltage (18–40 VDC) input.

It is designed to provide precise speed and load control for prime movers.

By utilizing a high-speed microprocessor and flexible software, the 8200-186 can be programmed for various functions including isochronous speed control, droop speed control,

and load sharing via a DSLC™ (Digital Synchronizer and Load Control) unit.

## Technical Parameter Table

## Unique Product Description

What distinguishes the 8200-186 is its customizable dual-actuator control logic. Unlike standard controllers,

the 723PLUS hardware can be programmed to manage two separate actuators or a single actuator with complex auxiliary functions (such as fuel limiting based on manifold pressure).

Its “Low Voltage” designation makes it the standard choice for battery-backed backup power systems where 24V DC reliability is the primary power source.

## Product Advantages and Features

Microprocessor Precision: Digital architecture eliminates the drift associated with older analog potentiometers.

Flexible Programming: Compatible with Woodward’s Watch Window and Control Assistant software for real-time tuning.

Robust Load Sharing: Seamlessly integrates with Woodward DSLC and MSLC units for complex multi-generator paralleling.

High Environmental Tolerance: Built to withstand the extreme vibrations and temperatures found in engine rooms and turbine enclosures.

Data Logging: Internal memory allows for event capture, aiding in rapid fault diagnosis.

8200-186

## Application Cases

Marine Propulsion: Managing engine speed and load balance on dual-engine vessels.

Power Generation: Primary speed control for standby diesel generators in data centers or hospitals.

Gas Compression: Controlling turbine-driven compressors in pipeline stations.

Cogeneration (CHP): Balancing thermal and electrical output in combined heat and power plants.

## Installation and Maintenance

Wiring: Use shielded, twisted-pair cabling for all Magnetic Pickup (MPU) and Actuator signals to prevent electromagnetic interference.

Grounding: Ensure the chassis is grounded to the bulkhead or panel to protect the internal digital logic.

Maintenance: Periodically check the terminal block connections for tightness, as engine vibrations can loosen screws over time.

Calibration: Use a Handheld Programmer (9907-205) or a PC with the correct Woodward software to verify “PID” settings during commissioning.

## Other Models in the Same Series

Model Number    Power Input / Specification

8200-187    High Voltage (90–150 VDC or 88–132 VAC)

8200-185    Standard 723PLUS (High Voltage)

8200-226    Custom Application Software Variant

9907-205    Handheld Programmer (Compatible Accessory)

## Related Models

Woodward 2301A Series (Analog Predecessor)

Woodward 505 / 505E (Steam Turbine Specific)

Woodward Peak 150 (Specialized Gas Turbine Control)

ProAct™ Actuators (Commonly paired with the 8200-186)