2. General Description

• Part Number: 5434-334

• Manufacturer: Woodward (USA)

• Product Type: Digital Governor / Speed Controller (505 platform)

• Application: Steam/gas turbines, diesel/gas engines, gensets, compressors

• Control Core: 32‑bit microprocessor, real‑time OS

• Control Modes: Isochronous (0 droop), droop, load, inlet pressure, process control

• Signal Interface: 4–20 mA / 1–5 Vdc analog; 24 Vdc discrete I/O

• Compatibility: Woodward 505/505E, I/H converters, hydraulic actuators, DCS

• Mounting: Panel / DIN rail, industrial metal enclosure

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

3. Key Features

• 505 Universal Control – Works on steam/gas turbines and reciprocating engines

• Precision Speed Regulation – ±0.01% accuracy; isochronous/droop for grid/island operation

• Flexible I/O – Analog (4–20 mA) + discrete 24 Vdc for sensors/actuators

• Integrated Turbine Protection – Overspeed/underspeed, overpressure, trip logic, fault alarms

• Dual‑Actuator Support – Governor + intercept valve control (steam turbines)

• Engine/Genset Functions – Synchronization, load sharing, reverse power protection

• Harsh Environment Rated – −40 °C to +85 °C, shock/vibration resistant

• ToolKit Software – PC‑based configuration, tuning, and monitoring

4. Technical Specifications

• Part Number: 5434-334

• Power Supply: 24 Vdc ±10%, 40 W max

• Speed Range: 0–12,000 RPM (software configurable)

• Regulation Accuracy: ±0.01% speed; ±0.1 Hz frequency

• Analog Inputs: 4 × 4–20 mA / 1–5 Vdc (speed, load, pressure, setpoint)

• Analog Outputs: 2 × 4–20 mA (actuator command, monitor)

• Digital Inputs: 8 × 24 Vdc (start/stop, trip, mode, alarms)

• Relay Outputs: 6 × relay (5 A, 250 Vac) – trip, alarm, control

• Actuator Interface: Direct to Woodward I/H converters & hydraulic actuators

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

• Dimensions: 160 × 110 × 50 mm (W×H×D)

• Weight: Approx. 1.2 kg (2.6 lbs)

• Enclosure: Metal, conformal coated

5. Applications

• Industrial Steam Turbines – Single/dual‑actuator speed/load control

• Gas Turbines – Industrial power generation, mechanical drives

• Diesel/Gas Engine Gensets – Grid‑parallel or islanded operation

• Compressor Drives – Oil/gas, petrochemical, pipeline compressors

• Hazardous Locations – Class 1 Div 2 (refineries, offshore platforms)

6. Ordering Information

• Part Number: 5434-334

• Description: Woodward 5434-334 Digital Governor/Controller (505 Series), 24 Vdc, Universal Steam/Gas Turbine & Engine Speed/Load Control, Isochronous/Droop, 4–20 mA I/O, Turbine Protection