1. Product Overview

• Part Number: 5437-076

• Manufacturer: Woodward, USA

• Product Type: 505 Digital Microprocessor Controller / CPU Module

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

• Function: Core processing unit for steam/gas turbine speed control, load sharing, safety trip, alarm logic, and communication management in power generation and industrial turbine applications.

2. General Specifications

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

• Processor: High‑speed 32‑bit RISC microcontroller

• Memory: On‑board RAM/ROM for program, configuration, and data logging

• 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. 0.55 kg

• Certifications: CE, UL, Class 1 Div 2

• Warranty: 12 months

3. I/O & Electrical Parameters

• Analog Inputs: 4 channels (4–20 mA / 1–5 Vdc configurable)

• Analog Outputs: 3 channels (0–10 Vdc / ±150 mA servo)

• Discrete Inputs: 8 channels (24 Vdc logic)

• Discrete Outputs: 3 channels (relay / transistor)

• Speed Inputs: 2 × magnetic pickup (4–20,000 Hz)

• Isolation: 1500 VDC I/O isolation; 500 VDC power‑logic isolation

4. Communication

• Interfaces: RS232, RS485, Ethernet

• Protocols: Modbus RTU / TCP, Woodward LinkNet, LonTalk

• Function: DCS/PLC connection, remote monitoring, data logging, and programming

5. Key Features

• High‑reliability CPU for real‑time turbine control algorithms

• Dual‑mode regulation: isochronous (constant speed) and droop (load sharing)

• Integrated overspeed protection, trip logic, and alarm management

• Configurable I/O for steam/gas turbines, gensets, and compressors

• Wide temperature and vibration tolerance for harsh power/industrial environments

• Direct compatibility with Woodward 505 series governors and hydraulic actuators

6. Typical Applications

• Steam / gas turbine speed & load control

• Generator set paralleling and load sharing

• Turbine overspeed protection and safety trip systems

• Petrochemical / power plant turbine‑compressor units

• Industrial engine/generator control in hazardous locations