1. Product Overview

• Part Number: 5437-078

• Manufacturer: Woodward, USA

• Product Type: 505 Series Servo Drive / Actuator Output Module

• Matching System: Woodward 505 / 505E / 505H Turbine Governor System

• Function: Drives hydraulic or electric actuators (fuel valves, steam valves, guide vanes) based on 505 controller commands; provides high‑precision position control for turbine speed/load regulation in power generation and industrial turbine applications.

2. General Specifications

• Supply Voltage: 18–32 VDC (nominal 24 VDC)

• Control Input: ±150 mA (servo command from 505 CPU)

• Output: High‑current drive for proportional actuators

• Mounting: DIN rail / panel mount

• Protection Class: IP20

• Operating Temperature: -40 ℃ to +85 ℃

• Storage Temperature: -45 ℃ to +90 ℃

• Humidity: 5%–95% RH, non‑condensing

• Vibration: 10–150 Hz, 2G continuous

• Weight: Approx. 0.50 kg

• Certifications: CE, UL, Class 1 Div 2

• Warranty: 12 months

3. Electrical Parameters

• Power Input: 24 VDC ±10%, 1.5 A max

• Command Input: ±150 mA, isolated

• Actuator Output: 0–24 VDC, 3 A continuous (short‑circuit protected)

• Resolution: 12‑bit (0.025% full scale)

• Response Time: ≤10 ms

• Isolation: 1500 VDC input‑output isolation

4. Key Features

• High‑precision servo drive for proportional hydraulic/electric actuators

• Direct interface with 505 CPU (5437‑076) ±150 mA command signal

• Short‑circuit, overcurrent, and reverse‑polarity protection

• Wide operating temperature range for harsh industrial environments

• Compact, rugged design for control cabinet installation

• Compatible with Woodward hydraulic actuators (e.g., 8230 series)

• Enables isochronous/droop mode speed and load control

5. Typical Applications

• Steam/gas turbine fuel valve & steam valve position control

• Generator set speed/load regulation with 505 governor

• Hydro turbine guide vane actuator drive

• Industrial engine/generator control in power plants

• Petrochemical turbine‑compressor unit valve control