easYgen-3400/3500
GUIDEFORM SPECIFICATION
#37609, 06/2015
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Product(s) described: easYgen-3400/3500 Genset Controllers
Table of Contents
General .................................................................................................................................................................. 1
Automatic Unit Sequencing ................................................................................................................................... 2
Synchronizing ........................................................................................................................................................ 2
Real KW Load Control........................................................................................................................................... 2
Reactive KVAR Control ......................................................................................................................................... 3
Engine-Control/Protection ..................................................................................................................................... 3
Generator Protection ............................................................................................................................................. 3
Mains Protection (Generator Decoupling)............................................................................................................. 3
Breaker Protection/Monitoring With Circuit Breaker Controller ............................................................................ 3
Measurement......................................................................................................................................................... 4
Communications .................................................................................................................................................... 4
Diagnostic Features .............................................................................................................................................. 4
Mounting Styles ..................................................................................................................................................... 4
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THE INFORMATION CONTAINED IN GUIDEFORM SPECIFICATION IS INTENDED TO EASE SPECIFYING WOODWARD POWER
MANAGEMENT PRODUCTS. WOODWARD RESERVES THE RIGHT TO UPDATE THIS PUBLICATION. INFORMATION PROVIDED BY
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General
The power generation system shall be controlled by a microprocessor based power management system
consisting of Woodward easYgen-3400/3500 series controller on each generator source. The generator
controllers operate shall operate in a peer to peer system with up to 32 synchronous or asynchronous
generators. This system shall provide automatic sequencing of multiple units, multiple segments,
synchronization, generator, generator group and utility breaker control, soft loading and unloading for
bumpless transfers, real KW load control, reactive KVAR control, metering, communications and diagnostic
features. The generator controllers shall be a commercially available control and not PLC based, and shall be
configured for operation without the need for customized, proprietary programming or software. The system
shall be able to be configured in either a simple island or utility paralleled arrangement. The generator
controller shall have the capability to operate with advanced circuit breaker control (Woodward LS-5 or
equivalent) for complex systems. Specific requirements are as follows:
Automatic Unit Sequencing
Automatically starts and stops generator sets upon utility failure or utility restoration.
Automatically starts and stops generator sets based on plant load to maintain the power interchange at the utility intertie
within predetermined limits.
Automatic generator set loading and unloading for bumpless transfer
Automatic load dependent start/stop for improved generator system efficiency with configurable generator priority
sequencing based on generator size, service hours, fuel efficiency or fixed sequence.
Complex applications with multiple generator sets and utility/bus segment interties are controlled via the CAN bus
based upon the logic internal to the generator and circuit breaker controllers with optional control inputs from an
external PLC.
Synchronizing
Independent phase match or slip frequency synchronization with voltage matching for control of multiple circuit breakers
on generators, bus segments and utility mains.
Adjustable phase and voltage window.
Dead bus closing logic internal to the controller to ensure multiple units close safely within the synchronization
parameters.
Dead field paralleling (run up synchronization).
Breaker or contactor control for generators.
Real KW Load Control
True RMS voltage and current measurement for reduced susceptibility to harmonics.
Speed bias signal to prime mover speed control freely configurable in the range of +/- 20 ma, +/- 10 volts, or 0-10 VDC,
500 Hz PWM, and discrete raise/lower to control prime movers of different types (diesel engine, gaseous or bio-fueled
engine, gas turbine, micro-turbine, etc.).
Configurable load and unload ramp rates for generators, bus segments, or the entire system at the utility ties.
Proportional load sharing (isochronous or droop) of up to 32 generators, regardless of KW rating.
Base load control.
Process control.
Import/export control at the utility mains breakers.
Externally adjustable load or process references using analog inputs, Modbus RTU, or CAN open.
Digital load sharing integral to the controller without external load sharing control modules.
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Reactive KVAR Control
Voltage bias signal to AVR freely configurable in the range of +/- 20 ma, +/- 10 volts, or 0-10 VDC, 500 Hz PWM, and
discrete raise/lower.
Configurable load and unload ramp rates for generators, bus segments, or the entire system at the utility ties.
PF sharing on isolated buses using percentage base reactive load sharing
VAR/PF control using percentage based load sharing during process, base load or import/export control.
Externally adjustable VAR or PF references using analog inputs, Modbus RTU, or CANopen.
Engine-Control/Protection
Configurable start and stop logic for diesel and gas engines with fully programmable settings.
CAN SAE J1939 network communication/control to engine ECU.
Engine over speed and under speed (ANSI 12 & 14).
Cylinder temperature monitoring for in-line and V engines.
Engine speed/frequency mismatch detection.
Cool down timer. Customizable protection based upon J1939 or analog inputs.
Generator Protection
Directional power (ANSI 32), reverse power (ANSI 32R), and reduced power (ANSI 32F)
Unbalanced load (ANSI 46)
Phase rotation (ANSI 47)
Phase over current instantaneous (ANSI 50) and time (ANSI 51).
Phase over current voltage restraint (ANSI 51V)
Loss of excitation (40Q).
Ground fault measured (50G)
Power Factor (ANSI 55).
Over/under voltage (ANSI 27/59)
Over/under frequency (ANSI 81 O/U)
Mains Protection (Generator Decoupling)
Over/under voltage (ANSI 27/59)
Phase shift/rotation field (ANSI 78)
Over/under frequency (ANSI 81O/U)
Rate of frequency (ROCOF) with the circuit breaker controller on the Mains
QV monitoring to avoid import of inductive reactive power with the circuit breaker controller on the Mains
Breaker Protection/Monitoring With Circuit Breaker Controller
Over/under voltage (ANSI 27/59)
Phase shift/rotation field (ANSI 27/59)
Over/under frequency (ANSI 81 O/U)
Synchronization time out monitoring
Breaker open/close monitoring
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Measurement
True RMS Voltage—L-N, L-L, per phase and average; 1-phase or 3-phase generator and mains, 1-phase load bus.
True RMS current—Line current per phase and average; 1-phase or 3-phase generator, 1-phase mains
Frequency
Power—kVA, kVAR and KW per phase and total; PF per phase and average; total generator kWhr and kVARhr
Communications
Three CAN communication networks shall be utilized:
o System control and load share network
o CANopen visualization and control.
o Local input/output expansion, remote panel and engine J1939 ECU.
Serial Modbus RTU (slave) communication for SCADA annunciation and external control.
Configuration via PC/laptop with Woodward Toolkit service tool and through an integral display, if equipped,
Multi-level password protection
Diagnostic Features
The system shall be designed to allow operation with one or more system node failures. The generator controller and
the circuit breaker controller shall be able to provide a missing member alarm, which will allow the system, if
programmed accordingly, to go from isochronous to droop load sharing for continued operation.
Configuration check in load dependent start/stop.
Phase rotation mismatch
Network communications error alarm
Breaker/contactor synchronization time out and reclose alarms
Speed/frequency mismatch.
Analog input out of range alarms
Sequence of events recorder—300 events FIFO with real time clock.
Graphical overview of generators, generator bus bar and mains with trending on door mounted generator controller and
the remote panel.
Mounting Styles
The door mounted generator controller shall have sealed soft keys and a large, easy-to-read backlit 5.7” color LCD, with
a graphical display and text that can configured in 14 languages.
The back panel mounted generator controller shall be encased in a rugged aluminum chassis for use in harsh
environments or confined spaces. The back panel mounted circuit breaker controller shall be encased in a rugged
aluminum chassis designed to be back panel mounted.
The door mounted remote panel shall be capable of being be used with either the back panel mounted or the door
mounted generator controller. Each remote panel shall be able to communicate with one generator controller.
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