Woodward 8200-1312 (505XT Hazard Zone Type Turbine Digital Speed Control Controller)
I. Product Positioning
8200-1312 is a dedicated configuration model of the Woodward 505XT series, an integrated operation panel digital governor for turbines (steam turbines / industrial turbines), designed specifically for ATEX/IECEx Zone 2 Class 2 hazardous areas, suitable for applications in oil and gas, petrochemical, offshore platforms, and explosion-proof power plants where flammable gases are present. It is responsible for regulating the turbine speed, load, extraction / intake steam, and providing unit protection.
Model and Configuration Disassembly
Series: 505XT Turbine Control (Second-generation configurable turbine controller, supporting extraction / supplementary steam control)
Part Number: 8200-1312
Power Supply Specifications: LVDC Low Voltage DC Power Supply 18–36 VDC (commonly 24VDC factory DC)
Explosion-proof Certification: ATEX, IECEx, Class I Div 2, marine certification, can be installed and used in 2nd Zone flammable and explosive environments
Built-in Integrated HMI: LCD Display + Physical Buttons, for on-site viewing of speed, load, alarms, and configuration parameters
Core Control Functions
Speed Control
Speed Measurement Range: 0–6000 RPM, Speed Control Accuracy ±0.1%
Supports automatic speed increase, warm-up, critical speed crossing, overspeed protection trip
Load / Extraction Admission/Extraction Control
Can achieve multi-loop PID regulation for single valve, extraction, and supplementary steam
Grid-connected generator active power control, isolated grid speed stabilization control
Protection Logic
Over-speed, stall, probe failure, valve position feedback abnormality, local / remote control switching interlock
Configurable soft shutdown / emergency trip output contacts
Analog Input/Output
Supports 4-20mA Valve Position Control Output, Process Pressure/Temperature Analog Input Collection
Communication Capability
Built-in RS485, supports Modbus-RTU/Modbus-TCP
Can upload speed, load, alarm, valve position data to DCS/PLC (such as ControlLogix); if connected to the intelligent substation IEC61850 system, it can be converted through the MVI56E-61850C module to send data to the entire station monitoring system
Key Hardware Parameters Table
Project Parameters
Power Supply 18~36 VDC (24V DC is commonly used)
Operating Temperature -40℃ ~ +85℃
Protection Grade IP65, explosion-proof sealed housing
Processor 32-bit high-performance MCU, adaptive PID algorithm
Communication RS485 Modbus, optional Ethernet expansion
Output Servo control output, 4-20mA analog quantity, relay alarm / trip contacts
Typical Application Scenarios
Petrochemical / Refinery Self-owned Power Station Steam Extraction Industrial Steam Turbine Speed Regulation
Offshore platforms, oil and gas field generator sets Turbine Control (explosion-proof requirements)
Chemical plants Drive Compressor, Pump Steam Turbine Speed Regulation
Ship Power Turbine Control (with classification society certification)
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