Woodward EasYgen-3500XT Advanced Generator Set Grid-Connected Integrated Controller

Woodward easYgen‑3500XT
Brand: Woodward
Full name: easYgen-3500XT Advanced Generator Set Grid-Connected Integrated Controller
Reference for material numbers
easYgen-3500XT-P1: 8440-2085
easYgen-3500XT-P2: 8440-2088
XT = Newer enhanced hardware platform, replacing the older easYgen-350 Positioning
Multi-generator grid connection, microgrid, cogeneration CHP dedicated unit main control
Integration: Engine start-stop control + synchronous grid connection + active/reactive load sharing + generator integrated protection + programmable logic.
Regular configuration: Woodward PEAK200 (steam turbine speed regulation) + Basler DECS-250 (excitation AVR), forming a complete steam turbine generator control system.
Model distinction (P1 / P2 / LT / K51)
P1 (Package 1)
Basic version, suitable for standard grid connection; can be paired with LS-6XT circuit breaker synchronous controller.
P2 (Package 2, commonly used)
Extended I/O, three-phase bus voltage measurement, supports CHP cogeneration, mainstream project selection.
‑LT low-temperature version, display screen with built-in heating (minimum working -40℃)
‑K51 group control version, can be networked with GC-3400XT group control unit, up to managing hundreds of units
Core function list
1) Operating modes
AMF power failure self-starting, islanding independent operation, power grid connection, islanding multi-unit parallel operation, purchase and sale electricity control (Import/Export)
Black start synchronization (Dead Bus Synchronization), soft loading / soft unloading
Open circuit switching, closed transition (Closed Transition)
2) Synchronization and load sharing
Sliding frequency / phase matching synchronization, controlling GCB generator switch, MCB power grid switch, GGB bus tie switch
Load sharing channel: CANopen or redundant Ethernet Modbus TCP
3 Independent free PID (for speed bias, voltage bias, waste heat / heat load control, essential for CHP scenarios)
3) Built-in protection (ANSI standard)
Generator, power grid, bus complete protection:
25 synchronous checks, 27 low voltage, 59 overvoltage, 81U/O high and low frequency, 78 frequency change rate ROCOF, phase sequence, reverse power, overcurrent, underexcitation, overexcitation, etc.
True RMS sampling, tolerance to harmonic distortion, highest support 690VAC direct measurement.
4) Logic platform LogicsManager
Built-in programmable logic, many scenarios can omit external PLC; supports analog quantity manager for custom regulation loop.
Hardware I/O (P2 version)
23 digital inputs / 16 relay outputs
2 analog output (±10V / 4–20mA / PWM selectable)
Support MPU speed probe input
CANopen extended remote I/O (up to 32DI/32DO, 16AI/4AO expansion)
Communication interface (3500XT standard)
3× CANBus (J1939 engine ECU + CANopen load sharing)
3× Ethernet (Modbus TCP, supports redundant networking, SNTP time synchronization) 1× RS485 Modbus RTU
USB local debugging port
Companion software: Woodward ToolKit (parameter configuration, waveform recording, program download)
Optional remote touch screen: RP-3000XT
Power supply and environment
Power: 12 / 24 VDC (9–32 VDC wide range)
Standard temperature: -20 ℃ ~ +70 ℃; LT model -40℃ minimum
Panel installation, color LCD Chinese display; certifications: UL, CE, ABS ship class optional
Compatibility with your previously collected equipment applications
easYgen-3500XT → Unit main controller: grid connection, load distribution, switch control, protection logic
PEAK200 (8200-1508) → Turbine speed / load speed control controller
Basler DECS-250 → Generator excitation AVR (voltage / reactive power regulation)
GE Mark VIe IS220YDOAS1AJ → Large-scale thermal power plant complete system (larger in size, generally not mixed with easYgen)
Typical industrial turbine generator scheme:
easYgen-3500XT ↔ PEAK200 (speed deviation signal); easYgen-3500XT ↔ DECS-250 (reactive / voltage deviation)