Description
🚀 Designed for demanding industrial environments, the Woodward 8200-205 ProTech 203 is an advanced electronic two-out-of-three overspeed protection system. Featuring a robust 220 Vac power supply, dedicated CPU and MPU failure indicators, and a secure lockable enclosure, this system reliably safeguards steam, gas, and hydro turbines by continuously monitoring rotor speed through three independent channels.
Technical Specifications & Datasheet
⚙️ Dimensions: 483 mm x 311 mm x 143 mm (19 in x 12.24 in x 5.62 in)
⚖️ Weight: Approximately 14 lbs (6.35 kg)
🌍 Country of Origin: United States
⚡ Power Consumption: 35 W nominal
🔌 Operating Voltage: 220 Vac power supply input
🌡️ Operating Temperature: -25°C to +60°C (-13°F to +140°F)
🛡️ Enclosure Rating: NEMA 4/4X and IP54 dust and moisture protection
⏱️ Response Time: 40 ms maximum trip actuation time
🔄 Speed Range: 100 Hz to 32,000 Hz frequency monitoring range
🔌 Communication Interface: Modbus RTU / RS-485 serial communication port
Operating Procedures & Usage Methods
🛠️ Mount the enclosure securely onto a stable structural panel or bulkhead in an area with minimal vibration, keeping the lockable door closed and keyed to restrict unauthorized access.
🔧 Connect active or passive magnetic pickup (MPU) sensors to the three independent speed-sensing channels, ensuring tight screw terminals and proper shielding against electromagnetic interference.
📋 Set the desired overspeed thresholds, acceleration limits, and voting parameters via the internal keypads and digital front-panel interface prior to initial commissioning.
Power Sequencing Guidelines
🔌 Startup Sequence: Energize the 220 Vac power source to initiate internal microprocessor diagnostics across all three channels, check that CPU and MPU failure LEDs remain off, and confirm system readiness before turbine cranking.
🛑 Shutdown Sequence: Isolate the 220 Vac input power feed only after the turbine rotor has completely spun down to a safe, stationary stop to prevent abnormal signal fluctuations.
Product Usage Instructions
📖 The unit uses a 2-out-of-3 hardware voting architecture, ensuring that a single sensor or internal processor failure will not result in a false turbine trip or compromise safety availability.
📖 Utilize the front-panel LED indicators and diagnostic readouts to continuously monitor CPU health and MPU signal integrity during routine plant operation.
Frequently Asked Questions
💡 Q: What are the key power and enclosure features of the 8200-205 model? A: It features a 220 Vac power supply input, dedicated CPU and MPU failure indication LEDs, and a secure lockable enclosure.
💡 Q: How does the CPU and MPU failure indication help operators? A: It provides immediate visual notification of component or sensor anomalies, allowing maintenance personnel to address issues before they impact operations.
💡 Q: Is the system immune to single-point failures? A: Yes, the redundant 2-out-of-3 channel configuration ensures high reliability and continuous protection even if an individual channel malfunctions.
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