8235-650 Woodward Electric ProAct Actuator and Driver Module

Product Overview

The Woodward 8235-650 is a ProAct Actuator and Driver Module engineered for diesel engines, gas engines, turbines, and generator sets. Part of the ProAct and ProAct Plus actuator family, it provides precise fuel and air control through electrically driven positioning. This actuator uses Limited Angle Torque (LAT) motor technology, delivering 75° of travel with integral electronics for direct digital control and communication. It interfaces directly with fuel racks, butterfly valves, or engine levers, ensuring accurate and responsive operation under dynamic load conditions.

Key Technical Specifications

• Product Type: ProAct Actuator / Driver Module
• Series: Woodward ProAct / ProAct Plus / 8235 Series
• Function: High-torque actuator for fuel and air control
• Technology: Limited Angle Torque (LAT) motor
• Travel Range: 75° typical for ProAct actuators
• Control: Integral electronics with digital driver
• Interfaces: Direct connection to butterfly valves, fuel racks, or levers
• Power Supply: 24 VDC nominal
• Operating Temperature: -40°C to +85°C
• Response Time: Fast dynamic response for load changes
• Dimensions: 290 × 60 × 190 mm
• Weight: 2.8 kg
• Actuator Model: PISC II
• Max. Working Pressure (Absolute): 5.2 BAR.A
• Nominal Piping Size (DN): 120
• Flow Medium Max Temperature: 85°C
• CG from Valve Bore Centerline: 5.4 inches
• O-Rings: Parker 2-255
• Certifications: CE, UL (region-dependent)
• Origin: USA

Key Features

• LAT Motor Technology: Limited Angle Torque motor for precise 75° positioning
• Integral Electronics: Built-in digital driver for direct control
• Direct Valve Interface: Connects to butterfly valves, fuel racks, or control levers
• Flow Control: Minimizes leakage of charged fuel/air mixture
• Fast Dynamic Response: Rapid reaction to load changes for stable engine operation
• Wide Temperature Range: -40°C to +85°C for harsh environments
• High Torque: Suitable for demanding industrial applications

Applications

• Diesel engine fuel control
• Gas engine air/fuel mixture control
• Steam turbine valve positioning
• Gas turbine fuel metering
• Generator set governor actuation

Installation Guide

1. Mount actuator on valve or fuel rack with proper mechanical linkage
2. Connect 24 VDC power supply
3. Wire digital control signal from Woodward governor/controller
4. Install O-rings (Parker 2-255) on flange grooves
5. Verify valve bore centerline to CG distance (5.4 inches)
6. Configure actuator position limits via controller software
7. Test full 75° travel and response time

FAQ

Q: What is LAT motor technology?
A: Limited Angle Torque motor — designed for precise angular positioning over a limited travel range (75° in this case).

Q: What valves can it drive?
A: Butterfly valves, fuel racks, and engine control levers.

Q: What is the maximum working pressure?
A: 5.2 BAR absolute.

Q: What is the flow medium temperature limit?
A: 85°C maximum.

Model Selection Tips

• 8235-650 = ProAct actuator with LAT motor for 75° travel
• Verify valve type (butterfly) and DN size (120) match your application
• Confirm 24 VDC power supply and digital control signal compatibility
• Check maximum working pressure (5.2 BAR.A) against system requirements
• For alternative actuator models, consult ProAct Plus product line