2. General Description

• Model: easYgen‑178 (5421-178)

• Series: easYgen 3000XT (3200XT‑P1 package)

• Application: Three‑phase generators (diesel/gas/steam), grid paralleling, islanded mode, AMF, peak shaving, cogeneration

• Core Functions: Auto‑sync, freq/phase/voltage matching, droop/isochronous load sharing, engine control, generator protection, GCB/MCB control, event logging

• Processor: 32‑bit ARM microcontroller

• Display: 4.3” backlit monochrome LCD (240×128), multilingual support

• Communication: USB, RS‑485, J1939, Ethernet (Modbus TCP/RTU)

• I/O: Configurable digital inputs/outputs, analog 4–20 mA, relay outputs

• Mounting: Panel‑mount (front display/keypad)

• Certifications: CE, UL, RoHS, Class 1 Div 2 (hazardous areas)

3. Key Features

• All‑in‑One Genset Control – Start/stop, speed/frequency control, voltage regulation, protection, sync, load share

• Precision Auto‑Synchronization – ±0.01 Hz freq, ±1° phase, ±0.5% voltage match

• Advanced Load Sharing – Isochronous (zero droop) or droop kW/kVAR balancing across multiple gensets

• Dual Operation Modes – Grid‑parallel (utility tie) or islanded (standalone)

• Comprehensive Protection – Over/undervoltage, over/underfrequency, overload, reverse power, overcurrent, earth fault

• Rich Communication – USB (programming), RS‑485, J1939 (engine), Ethernet (Modbus TCP)

• Data Logging & Diagnostics – Real‑time clock, event log, fault history, trending

• Industrial‑Grade Reliability – −40 °C to +85 °C, shock/vibration resistant, conformal coating

4. Technical Specifications

• Part Number: 5421-178

• Manufacturer: Woodward (USA)

• Product Type: Genset Controller, Automatic Synchronizer & Load Sharing Unit

• Model: easYgen‑178 (3200XT‑P1)

• Power Supply: 24 Vdc ±10%, 40 W max

• Processor: 32‑bit ARM, 128 MB flash

• Display: 4.3” LCD, 240×128 pixels, backlit

• Sync Accuracy: ±0.01 Hz (freq), ±1° (phase), ±0.5% (voltage)

• Load Sharing: Isochronous (0 droop) or droop (adjustable)

• Communication Interfaces:

  • USB 2.0 (device, programming)

  • RS‑485 (Modbus RTU)

  • J1939 (CAN, engine data)

  • Ethernet 10/100 Mbps (Modbus TCP)

• Analog Inputs: 4 × 4–20 mA / 1–5 Vdc (configurable)

• Analog Outputs: 2 × 4–20 mA

• Digital Inputs: 12 × 24 Vdc (isolated)

• Relay Outputs: 8 × relay (5 A, 250 Vac) – GCB/MCB, alarms, controls

• Control Output: PWM speed trimming (for Woodward 505/505E governors)

• Operating Temperature: −40 °C to +85 °C

• Dimensions: 180 × 140 × 60 mm (W×H×D)

• Weight: Approx. 1.8 kg (4.0 lbs)

• Compatibility: Woodward 505/505E/505XT governors, MicroNet systems, easYgen ToolKit‑SC software

5. Applications

• Critical Power Generation – Data centers, hospitals, industrial plants, utilities

• Multi‑Generator Paralleling – Diesel/gas/steam turbine gensets (grid or island)

• Load Management – Peak shaving, import/export control, cogeneration

• Islanded Power Systems – Remote sites, oil/gas platforms, mines

• Hazardous Areas – Class 1 Div 2 (offshore, refineries, chemical plants)

6. Ordering Information

• Part Number: 5421-178

• Description: Woodward 5421-178 easYgen‑178 (3200XT‑P1) Genset Controller, Automatic Synchronizer & Load Sharing Unit, 24 Vdc, 4.3” LCD, USB/RS‑485/J1939/Ethernet, for 3‑Phase Generator Grid Paralleling & Islanded Operation