Year: 2026

Next Generation Electric

Valves and Actuators

Increase Turbine

Reliability and Availability

Heavy Duty Gas Turbines have increasingly been dispatched to support

the grid during renewable energy transition. These market conditions

drive fleet owners to operate their assets as peakers, creating the need

for frequent starts. Start-up reliability has become a key success factor

for these units.

Benefits of Electric

›Elimination of hydraulic fluid and associated problems

with contamination, cold weather and leakage

›Higher reliability design inherent to electric actuation

significantly increase maintenance intervals

› Improved control response and precision

›OEM Qualified and included with the majority of new

Gas Turbines

›Compliant with NERC standards for cold weather

preparedness

›Service Tool provides enhanced diagnostics for plant

personnel and early indication of performance issues

at the DCS operator terminal

Benefits of Electric

›Elimination of hydraulic fluid and associated problems

with contamination, cold weather and leakage

›Higher reliability design inherent to electric actuation

significantly increase maintenance intervals

› Improved control response and precision

›OEM Qualified and included with the majority of new

Gas Turbines

›Compliant with NERC standards for cold weather

preparedness

›Service Tool provides enhanced diagnostics for plant

personnel and early indication of performance issues

at the DCS operator terminal

Easy to Install

›Most valves are drop in replacements and do not

require piping modifications

›Servovalve Interface option allows the installer to

use existing signal wiring from the control system

›Alternate communication options for control system

integration are available such as CAN Bus and Analog

I/O for maximum flexibility

›Electric actuators are paired with a remote Digital

Valve Positioner (DVP) that controls the actuator

operation and serves as the customer interface for

power/signal wiring and digital communications.

Multiple DVP’s can be packaged within a stainless

steel cabinet and prewired from the factory to greatly

reduce commissioning time

Common Problems with Hydraulic Actuators in Heavy Duty Gas Turbines

›Hydraulic fluid viscosity dependent on ambient

temperatures – leads to slower response times in

cold temperatures – resulting in failed starts

›Fluid varnishing can lead to clogged servovalve

passages resulting in failed starts or stops

›Potential of high pressure hydraulic leaks pose safety risks

›Premature seal failure – noise on hydraulic control

circuits can lead to premature wear on hydraulic

and gas seals

›No actuator/valve data to predict failure in advance of outages

Heavy Duty Gas Turbines have increasingly been dispatched to support

the grid during renewable energy transition. These market conditions

drive fleet owners to operate their assets as peakers, creating the need

for frequent starts. Start-up reliability has become a key success factor

for these units.

Key Product Variants Include

Simple Governor (SG) 5.7 – 40 foot-pounds of work.

Universal Governor (UG-25+) 10.8 – 21.7 foot-pounds of work.

Governor (3161) 18 foot-pounds of work.

Electronically Controlled Actuator w/ Mechanical Backup (EGB) 1-300 foot-pounds of work.

Large Pressure-Compensated (PG) 12-58 foot-pounds of work.

Key Features

Simple to operate and exceptionally reliable.

Precise control of engine speed and output.

For virtually all types of engine applications: power generation, marine, pump, compression and vehicle

applications.

Proven, industry-standard design.

Worldwide acceptance and easy service.

This proven design has been an industry standard for many years and worldwide

acceptance ensures easy servicing in most engine and governor shops.

The mechanical governor backup capability of Woodward’s EGB governor/actuators

provides increased reliability and safety during the operation of dual-fuel and diesel engines or gas and

steam turbines.

Woodward’s PG pressure-compensated governor line effectively controls the speed

of the largest engines and turbines with work capacities ranging from 12 to 500 ft-lb.

Woodward hydraulic-mechanical and electronic governors provide reliable and precise control of engine

speed and output in every type of engine application.

Features & Functionality

Hydraulic-mechanical and electronic governors from Woodward ensure exceptionally

reliable and precise control of engine speed and output in virtually every type of engine application.

Woodward governors are used in power generation, marine, pump, compression and vehicle applications,

among others.

They are available in work output ratings ranging from 10.8 inch-pounds up to 500 foot-pounds.

Our SG and PSG governors are simple to operate and offer exceptional reliability.

Driven by a suitable SG/PSG/EG drive on the engine, these governors operate using the engine’s own oil

supply at minimum pressures of 25 psi.

Woodward’s universal governors (UG) are mechanical-hydraulic governors for controlling diesel,

gas or dual-fuel engines, or steam turbines.

This proven design has been an industry standard for many years and worldwide

acceptance ensures easy servicing in most engine and governor shops.

The mechanical governor backup capability of Woodward’s EGB governor/actuators

provides increased reliability and safety during the operation of dual-fuel and diesel engines or gas and

steam turbines.

Woodward’s PG pressure-compensated governor line effectively controls the speed

of the largest engines and turbines with work capacities ranging from 12 to 500 ft-lb.

Functions

• Protection: automatic start/stop of the genset, ATS (Auto Transfer Switch) control

with failure indication and protection function

• All output ports are relay-out

• Parameter settings: parameters can be modified and stored in internal FLASH

memory and cannot be lost even in case of a power outage; most of them can be

adjusted using front panel of the controller and all of them can be modified using

ToolKit-SC on a PC via USB or RS485 ports.

• Temperature, oil pressure and fuel level curves can be used directly and users can

define the sensor curves by themselves.

• Multiple crank disconnect conditions (generator frequency, speed sensor, oil

pressure) are optional.

• Event log, real-time clock, scheduled start & stop generator (can be set as start

genset once a day/week/month with or without load).

• Start-up logo and display time are user-defined.

• Can be used on pumping units and as an indicating instrument (indicate and alarm

are enable only, relay is inhibited).

• Maintenance function: Actions (warning or shutdown) can be set when maintenance

time out.

• Instead of conventional analog modulation with a potentiometer, all parameters use

digital adjustment for more reliability and stability.

• Accumulative total run time and total electric energy of A and B. The user can reset

it to 0 and re-accumulate the value, which allows to count the total value.

• Parameter setting: parameters can be modified and stored in internal FLASH

memory and cannot be lost even in case of power outage; most of them can be

adjusted using front panel of the controller and all of them can be modified using

ToolKit-SC configuration software on PC via USB or RS485 port

• More kinds of curves of temperature, oil pressure, fuel level can be used directly and

users can define the sensor curves by themselves

• Multiple crank disconnect conditions (generator frequency, speed sensor, oil

pressure) are optional

• Widely power supply range DC (8 to 35) V, suitable to different start battery voltage

environment

• Event log, real-time clock, scheduled start & stop generator (can be set as start

genset once a day/week/month whether with load or not)

• Logon wallpaper and display time are user-defined

• Can be used on pumping units and as an indicating instrument (indicate and alarm

are enable only, relay is inhibited)

• With maintenance function. Actions (warning or shutdown) can be set when

maintenance time out

• Phase sequence, frequency, Load current IA, IB, IC

• Each phase: Total active power [kW], Total reactive power [kvar], Total apparent

power [kVA], Average power factor PF

• Accumulated Total generator power [kWh], [kvarh], [kVAh]

• easYgen-1600 only: For Mains, controller has over and under voltage, over and

under frequency, loss of phase and phase sequence wrong detection functions

• For generator, controller has over and under voltage, over and under frequency, loss

of phase, phase sequence wrong, over and reverse power, over current functions

• 3 fixed analog sensors: Engine temperature, oil pressure, and fuel level

• Precision measure and display parameters about Engine, Temp. (WT) °C/°F both be

displayed Oil pressure (OP) kPa/psi/bar all be displayed Fuel level (FL) %(unit) Speed

(SPD) r/min (unit) Battery Voltage (VB) V (unit) Charger Voltage (VD) V (unit) Hour

count (HC) can accumulate to max. 65535 hours. Start times can accumulate to

max. 65535 times

• Protection: automatic start/stop of the genset

• easYgen-1600 only: ATS (Auto Transfer Switch) control with perfect failure

indication and protection function

• All output ports are relay-out

Key characteristics

• With ARM-based 32-bit SCM, highly integrated hardware, high reliability level

• Multilingual interface (English, Chinese, Spanish, Russian, Portuguese, Turkish,

Polish, and French) making commissioning convenient for factory personnel

• Improved LCD wear-resistance and scratch resistance due to hard screen acrylic

• Silicon panel and pushbuttons for better operation in high-temperature environment

• RS485 communication port enabling remote control, remote measuring, remote

communication via ModBus protocol

• Equipped with CAN bus port to communicate with J1939 genset. Monitoring

frequently-used data such as water temperature, oil pressure, speed, fuel

consumption and so on of ECU machine, and additionally also control start, stop,

raising speed, and speed droop via CAN bus port

• Suitable for 3-phase 4-wire, 3-phase 3-wire, single phase 2-wire, and 2-phase 3-wire

systems with voltage 120/240 V and frequency 50/60 Hz

• easYgen-1600 only: Collects and shows 3-phase voltage, current, power

parameter, and frequency of generator and additionally 3-phase mains voltage.

Mains/Generator Line voltage (UAB, UBC, and UCA), Phase voltage (UA, UB, and UC).

• easYgen-600 only: Collects and shows 3-phase voltage, current, power parameter

and frequency of generator. Generator Line voltage (UAB, UBC, and UCA), Phase

voltage (UA, UB, and UC).

Display and Status Indicators

General Notes

HMI and the configuration software enable access to control, settings, and visualization.

The front panel offers a number of functionally defined buttons and a set of menu

management buttons. LEDs visualize fixed states, the graphic display works together with

the menu management buttons to show all necessary information.

Features and Functions of both easYgen-600 and -1600

Both easYgen-600 and easYgen-1600 are very close in hardware and software. The

easYgen-1600 is the device with more/higher functionality. For comparison and better

differentiation both are described below.

easYgen-600 is intended to be used for single automation systems, auto start/stop of

the unit are performed with the help of remote signal.

easYgen-1600 has all functions of easYgen-600 as well as automatic mains failure

function (AMF), particularly well suited for single automation systems that include mains

and generator.