{"product_id":"woodward-8237-1597-protech-gii-overspeed-protection-system","title":"Woodward 8237-1597 ProTech-GII Overspeed Protection System","description":"\u003cp\u003eThe \u003cstrong\u003eWoodward 8237-1597\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e8237-1597\u003c\/strong\u003e Overspeed Protection System, operates as a dedicated hardware component for high-speed shaft rotation monitoring and emergency safety shutdown execution within prime mover turbine safety networks. The device processes 3 independent MPU speed sensor inputs (100-32,000 Hz) using a Triple Modular Redundant (TMR) 2-out-of-3 voting architecture to drive voted shutdown relays, analog speed outputs, and serial Modbus communications housed inside an IP56 rated enclosure.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e8237-1597\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWoodward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e13 x 19.1 x 6 inches (H x W x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e30 W per module (90 W total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Power (High)\u003c\/td\u003e\n\u003ctd\u003e100-150 VDC @ 30 W per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Power (Low)\u003c\/td\u003e\n\u003ctd\u003e18-32 VDC @ 30 W per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Inputs\u003c\/td\u003e\n\u003ctd\u003e3 x MPU (100-32,000 Hz, 1-35 Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Outputs\u003c\/td\u003e\n\u003ctd\u003e3 x 4-20 mA (speed readout)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Relays\u003c\/td\u003e\n\u003ctd\u003e2 x 2-out-of-3 voted shutdown relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Relays\u003c\/td\u003e\n\u003ctd\u003e3 x individual alarm relays (2 A @ 24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Interface\u003c\/td\u003e\n\u003ctd\u003e3 x RS-232\/422\/485 Modbus ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman Interface\u003c\/td\u003e\n\u003ctd\u003e3 x 4.2 inch LCDs with 15-key keypads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP56 (dust and water resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eActuator Loop Feedback Response Dynamics\u003c\/h3\u003e\n\u003cp\u003eThe ProTech-GII TMR architecture evaluates magnetic pickup frequency profiles across three isolated channel boards to ensure fast actuator loop feedback response during dynamic overspeed transients. Integrated 2-out-of-3 hardware voting logic processes trip conditions independently on each module, executing voted shutdown relay state transitions within 12 ms of a validated overspeed threshold breach. This high-speed trip response immediately de-energizes main trip solenoids and stop valves, preventing mechanical overspeed destruction while suppressing nuisance trips caused by single-channel sensor faults.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the Triple Modular Redundant (TMR) 2-out-of-3 voting architecture prevent false trips?\u003c\/p\u003e\n\u003cp\u003eA: Each of the three internal processing modules operates with independent power inputs, CPU logic, and speed sensor processing; a trip command requires two out of the three modules to detect an overspeed condition simultaneously before the output trip relays de-energize.\u003c\/p\u003e\n\u003cp\u003eQ: Can an individual module module be configured or tested online without tripping the operating turbine?\u003c\/p\u003e\n\u003cp\u003eA: Yes, individual modules can be placed into test mode using their dedicated front panel 4.2 inch LCD and 15-key keypad, allowing online speed signal simulation and relay testing while the remaining two modules maintain 1-out-of-2 active system protection.\u003c\/p\u003e\n\u003cp\u003eQ: What are the dual input power supply specifications supported by the chassis?\u003c\/p\u003e\n\u003cp\u003eA: The chassis accommodates high-voltage DC input rails (100-150 VDC) and low-voltage DC input rails (18-32 VDC) at 30 W per module, enabling redundant power wiring from separate station battery banks.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the IP56 rated enclosure securely onto a bulkhead or control cabinet panel using four heavy-duty mounting bolts torqued to structural specifications.\u003c\/li\u003e\n\u003cli\u003eConnect primary and secondary auxiliary DC power feeds using separate multi-conductor copper cables, ensuring high-voltage (100-150 VDC) and low-voltage (18-32 VDC) lines are correctly landed on designated module terminals.\u003c\/li\u003e\n\u003cli\u003eWire the three magnetic pickup sensors using individually shielded, twisted-pair cables, grounding each cable drain wire at the ProTech-GII chassis earth stud only.\u003c\/li\u003e\n\u003cli\u003eRoute 2-out-of-3 voted trip relay output lines directly to emergency trip solenoid circuits using stranded 14 AWG wire, maintaining physical isolation from high-current AC conduits.\u003c\/li\u003e\n\u003cli\u003eVerify Modbus RS-232\/422\/485 network termination switches are set correctly on the terminal board before interfacing serial lines with upper-level DCS platforms.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":50734294106364,"sku":"8237-1597","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/8237-1597.jpg?v=1785289629","url":"https:\/\/www.electronicplc.com\/es\/products\/woodward-8237-1597-protech-gii-overspeed-protection-system","provider":"Electronic PLC","version":"1.0","type":"link"}