Description
🚀 Engineered for mission-critical industrial applications, the Woodward 8200-201 ProTech 203 is an advanced electronic two-out-of-three overspeed protection system. Featuring a reliable 24Vdc input, a secure lockable enclosure, integrated trip alarms, and front-panel diagnostic LEDs, this system continuously monitors prime mover speed through three independent magnetic pickups (MPUs) to safely shut down steam, gas, or hydro turbines during overspeed conditions.
Technical Specifications & Datasheet
⚙️ Dimensions: 483 mm x 311 mm x 143 mm (19 in x 12.24 in x 5.62 in)
⚖️ Weight: Less than 14 lbs (6.35 kg)
🌍 Country of Origin: United States
⚡ Power Consumption: 35 W nominal
🔌 Operating Voltage: 24 Vdc 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
🛠️ Install the unit securely within a vibration-damped industrial panel environment, ensuring the lockable enclosure door remains closed and keyed to restrict unauthorized parameter adjustments.
🔧 Connect active or passive magnetic pickup (MPU) sensors to the three independent speed-sensing channels, ensuring tight terminal connections and proper signal grounding to eliminate electromagnetic interference.
📋 Configure trip thresholds, voting logic parameters, and alarm setpoints using the integrated multi-key touchpads and digital displays located on the front panel of each individual module.
Power Sequencing Guidelines
🔌 Startup Sequence: Energize the 24 Vdc power source to initialize internal self-diagnostics across all three independent processing channels, verify that no CPU or MPU fault flags appear, and confirm system readiness before turbine cranking.
🛑 Shutdown Sequence: Isolate the 24 Vdc power supply only after the prime mover has safely reached a complete standstill, preventing unintended signal fluctuations during coast-down phases.
Product Usage Instructions
📖 The system utilizes a hardware-based two-out-of-three voting architecture, ensuring that if a single speed-sensing unit or channel experiences a fault, the remaining channels maintain uninterrupted protection.
📖 Perform weekly online self-tests using the built-in frequency generator simulation feature, allowing individual modules to be tested sequentially while the prime mover remains fully operational.
Frequently Asked Questions
💡 Q: What does the two-out-of-three voting configuration achieve?
A: It guarantees high availability and fault tolerance, meaning a single component or sensor failure will not trigger a false trip or compromise safety.
💡 Q: Can the individual modules be replaced while the turbine is running?
A: Yes, the modular independent design allows faulty units to be serviced or replaced with minimal or zero operational downtime.
💡 Q: What is the purpose of the key lock on the enclosure?
A: It provides physical security and prevents unauthorized personnel from altering critical overspeed trip setpoints and configuration modes.
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