



WOODWARD 8200-1302(505D)数字汽轮机调速器


# WOODWARD 8200-1302 (505D) Digital Steam Turbine Governor ## I. Basic Information Model: 8200-1302 Series: 505D Integrated Graphic Digital Governor (Dedicated for Steam Turbines) Brand: Woodward Typical Applications: Closed-loop control of speed, load and pressure for industrial steam turbines, cogeneration units and marine steam turbines ## II. Electrical Power Specifications Supply Voltage: Isolated DC 18~36 VDC Total Power Consumption: ≤25W, rated operating current approx. 4.3A Power Isolation: Full-circuit electrical isolation with strong immunity to industrial interference Overvoltage Category: OVC III; Pollution Degree: 3 ## III. Hardware Configuration of I/O Channels 1. Dual Redundant Speed Measurement 2 independent speed pickup inputs, compatible with magnetic pickup (MPU), eddy current probe and proximity sensor Functions including zero-speed detection, peak overspeed recording and 3-stage critical speed avoidance 2. Analog Input (AI): 8 channels, 4–20mA with built-in loop power supply Each channel configurable for 27 functions: inlet steam pressure, exhaust pressure, oil temperature, cylinder temperature, load, valve position, extraction pressure, etc. Isolated acquisition of standard 4–20mA industrial signals 3. Analog Output (AO): 2 channels of 4–20mA Main steam valve control output (driving electro-hydraulic converters / servo valves) Transmission output for valve position feedback and remote load signal 4. Digital Discrete Input (DI): Total 20 contact inputs 4 channels default hard logic: Trip, Speed Up, Reset, Speed Down Remaining 16 channels fully customizable: external trip, external alarm, remote start/stop, remote mode switching, etc. Divided into 10 trip DI channels and 10 alarm DI channels, with RTC timestamp for all event records 5. Relay Output (DO): 8 Form-C contacts (normally open & normally closed) For overspeed trip, low speed alarm, high load, valve position fault, controller fault, running status indication, etc. Contact Rating: 250VAC/5A, 30VDC/5A ## IV. Human-Machine Interface (HMI) Display: 8.4-inch color LCD graphic screen, integrated panel with membrane keys Operation Modes: Three lockable modes – Run Mode, Configuration Mode, Calibration Mode Storage: 64MB memory for program and event logging; archived historical curves of faults, trips and alarms Control Algorithm: Dual PID dynamic control for speed and load; adjustable remote droop and frequency dead band Startup Logic: Automatic speed-up sequence for cold & hot turbine conditions; customizable warm-up and critical speed crossing curves ## V. Communication Interfaces RS232: Local debugging and upper computer configuration RS485: Modbus RTU for data exchange with DCS/PLC Ethernet (Optional): Remote monitoring and trend data upload Modbus support for reading & writing of speed, load, valve position, alarms and setpoints ## VI. Environmental & Mechanical Parameters Operating Temperature: -30℃ ~ +70℃ (-22℉~158℉) Storage Temperature: -40℃ ~ +85℃ Relative Humidity: 5%~95%, non-condensing Front Panel Protection Class: IP54 Mounting: Embedded panel mounting in control cabinet Overall Dimensions: 229×203×91 mm (Length × Width × Depth) Net Weight: Approx. 2.5kg Shell Certifications: IACS UR E10 (marine classification), ATEX explosion-proof, CE, UL, CSA ## VII. Control Performance Indicators Steady-state speed control accuracy: ±0.05% of rated speed Closed-loop response time: <1s Control Modes: Speed closed-loop, load closed-loop, combined extraction/backpressure control, valve position limiting Protection Logic: Full interlock protection including overspeed trip, low speed shutdown, valve position over-limit, signal loss and power supply failure ## VIII. Electromagnetic Compatibility (EMC) Immunity Standard: EN 61000-6-2 generic industrial immunity standard, applicable to power plants, chemical plants and other high electromagnetic interference sites ## IX. Summary of Core Functions - Fully automatic startup sequence for cold & hot turbines, automatic critical speed avoidance - Multi-loop combined regulation of speed, load and pressure - Dual redundant speed measurement and multi-stage overspeed protection - Timestamped fault records and historical trend curves for all events - Remote speed up/down, load setpoint adjustment and mode switching - Configurable multi-stage droop, frequency dead band, load limits and valve position upper/lower limits - Complete relay outputs for trips and alarms, easy connection to external audible & visual alarms and trip solenoid valves
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