WOODWARD 5405-819 is a high‑performance digital speed governor and control unit for industrial prime movers, including steam turbines, gas turbines, diesel/gas engines and generator sets. As an enhanced model in the 5405 series, it integrates precision speed/load regulation, 16‑point discrete I/O and multi‑protocol communication, providing reliable, all‑in‑one control for both new installations and retrofits in power, oil & gas and petrochemical industries. With robust industrial design, wide temperature tolerance and strong EMC performance, it ensures stable and safe operation under harsh field conditions.
General Description
The WOODWARD 5405-819 is a microprocessor‑based digital governor system designed to start, stop, control and protect industrial turbines and engines. It features a high‑speed CPU, 64 MB memory, 16 digital inputs and 16 digital outputs, supporting high‑frequency speed signals (500–12000 Hz) and analog setpoints (4–20 mA / 1–5 Vdc). The controller provides isochronous (zero droop) and droop control modes for grid‑parallel or isolated operation, with built‑in overspeed protection, speed limiting, startup fuel ramping and comprehensive fault diagnostics. It communicates via Modbus TCP, Ethernet/IP or PROFIBUS DP to DCS and other Woodward controllers (e.g., 505/505E/Atlas). The unit operates on 24 VDC ±10% power, adopts a compact rail‑mount enclosure, and withstands wide temperature and vibration environments.
Main Features
High‑precision digital governor for turbines, engines and generator sets
16DI / 16DO + 64 MB high‑speed memory for logic and I/O expansion
Dual control modes: isochronous (zero droop) and droop (load sharing)
Speed input: 500–12000 Hz; analog setpoint: 4–20 mA / 1–5 Vdc
Multi‑protocol communication: Modbus TCP, Ethernet/IP, PROFIBUS DP
Built‑in overspeed trip, high/low speed limit and startup fuel limiting
Comprehensive fault monitoring, alarm and self‑diagnosis functions
24 VDC ±10% power supply; operating temperature -10 °C to +60 °C
Compact rail‑mount design; industrial EMC, shock and vibration resistance
Technical Parameters
Model: 5405-819
Type: Digital Speed Governor / Integrated Control & I/O Unit
Applicable Prime Movers: Steam/gas turbines, diesel/gas engines, gensets
Speed Input Range: 500–12000 Hz
Analog Setpoint: 4–20 mA / 1–5 Vdc
Digital I/O: 16 inputs / 16 outputs
Memory: 64 MB
Communication: Modbus TCP, Ethernet/IP, PROFIBUS DP
Power Supply: 24 VDC ±10%
Operating Temperature: -10 °C to +60 °C
Storage Temperature: -40 °C to +85 °C
Dimensions: 120 × 80 × 30 mm
Weight: Approx. 1.0 kg
Installation: Cabinet rail mount
Certifications: CE, RoHS compliant
Application Scope
Primarily used for speed regulation, load control and safety protection of industrial steam turbines, gas turbines, diesel/gas engines and generator sets in electric power, petroleum, chemical and process industries. It performs prime mover startup/shutdown, overspeed protection, load sharing and remote monitoring, and integrates seamlessly with Woodward governors and DCS to form a complete prime mover control system for both new installations and system upgrades。
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