WOODWARD 5412-033 is a high‑performance digital governor and electro‑hydraulic (I/H) converter module for steam turbines, gas turbines and generator sets. It integrates microprocessor‑based speed control, analog/digital I/O, and hydraulic drive circuitry, serving as a key interface between electronic control signals and hydraulic actuation systems. Designed for both new builds and retrofits, it provides precise, stable speed/load regulation and overspeed protection in power, oil & gas and petrochemical plants.
General Description
The WOODWARD 5412-033 is a compact, rack‑mountable digital governor + I/H converter that accepts speed feedback (500–12000 Hz) and analog setpoints (4–20 mA / 1–5 Vdc). It converts electronic control commands into hydraulic pressure to regulate turbine inlet valves or fuel racks. The controller supports isochronous (zero droop) and droop modes for isolated or grid‑parallel operation, with built‑in overspeed trip, speed limiting, startup ramping and fault diagnostics. It features 8 digital inputs / 8 digital outputs, 4 analog inputs / 3 analog outputs, and communicates via Modbus RTU/TCP to DCS or Woodward 505/505E controllersWoodward. The unit operates on 24 VDC ±10%, supports hot‑swapping, and withstands harsh industrial environments.
Main Features
Digital governor + I/H converter for steam/gas turbines and gensets
Precision electro‑hydraulic conversion (electric signal → hydraulic pressure)
Dual control modes: isochronous (zero droop) and droop (load sharing)
Speed input: 500–12000 Hz; analog setpoint: 4–20 mA / 1–5 Vdc
I/O: 8DI / 8DO + 4AI / 3AO for control and monitoringWoodward
Communication: Modbus RTU/TCP for DCS/PLC integrationWoodward
Built‑in overspeed trip, speed/load limit and fault diagnostics
Hot‑swap capable; 24 VDC ±10% power supply
Rugged rack‑mount design; industrial EMC and vibration resistance
Technical Parameters
Model: 5412-033
Type: Digital Speed Governor / Electro‑Hydraulic (I/H) Converter Module
Applicable Prime Movers: Steam/gas turbines, generator sets
Speed Input Range: 500–12000 Hz
Analog Setpoint: 4–20 mA / 1–5 Vdc
Digital I/O: 8 inputs / 8 outputsWoodward
Analog I/O: 4 inputs / 3 outputsWoodward
Communication: Modbus RTU/TCPWoodward
Power Supply: 24 VDC ±10%, 5 A max
Operating Temperature: -10 °C to +60 °C
Storage Temperature: -40 °C to +85 °C
Dimensions: 120 × 80 × 30 mm
Weight: Approx. 1.2 kg
Installation: Standard cabinet rack mount
Certifications: CE, RoHS compliant
Application Scope
Primarily used for speed regulation, load control and electro‑hydraulic signal conversion of industrial steam turbines, gas turbines and generator sets in electric power, petroleum and chemical industries. It executes prime mover startup/shutdown, overspeed protection, load sharing and remote monitoring, and integrates seamlessly with Woodward 505/505E governors and DCS to form a complete turbine control system for both new installations and legacy system upgrades。
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