WOODWARD 5415-738 is a high‑performance electro‑hydraulic (I/H) converter & solenoid driver module for steam turbine control, designed to pair with Woodward 505/505E digital governors. It converts 4–20 mA governor signals into hydraulic pressure to regulate steam valves, serving as the core interface between electronic control and hydraulic actuation in power generation and industrial turbine systems.
General Description
The 5415-738 is a rack‑mounted, high‑current solenoid driver + precision I/H converter with integrated signal conditioning and fault diagnostics. It accepts 4–20 mA commands from Woodward 505/505E governors, drives hydraulic solenoids for steam turbine inlet valves, and provides closed‑loop pressure control. It features short‑circuit protection, LED status indicators, and galvanic isolation for reliable operation in harsh power‑plant environments.
Main Features
I/H converter + solenoid driver for steam turbine valve control
Direct compatibility with Woodward 505 / 505E digital governors
4–20 mA analog command input (standard governor signal)
High‑current drive for hydraulic solenoid coils
Short‑circuit, overload & reverse‑polarity protection
LED indicators for power, fault, and activity status
Galvanic isolation (1500 V) between control and power circuits
Rugged industrial design for extreme temperature and EMI conditions
Technical Parameters
Model: 5415-738
Type: Electro‑Hydraulic (I/H) Converter / Solenoid Driver Module
Compatible Governors: Woodward 505 / 505E
Command Input: 4–20 mA analog
Solenoid Output: Regulated high‑current drive
Power Supply: 24 VDC ±10%
Operating Temperature: -20 °C to +60 °C
Storage Temperature: -40 °C to +85 °C
Dimensions (W×H×D): 120 × 80 × 35 mm
Weight: Approx. 0.6 kg
Installation: Standard 19” rack mount
Certifications: CE, RoHS compliant
Application Scope
Exclusively used in steam turbine control systems in power plants, refineries, and petrochemical facilities. It converts 505/505E governor commands into hydraulic pressure for steam valve actuation, enabling precise speed/load regulation, overspeed protection, and startup/shutdown sequencing in both new installations and retrofits.
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