{"product_id":"ge-is200tsvoh1b-speedtronic-mark-vi-servo-terminal-board","title":"GE IS200TSVOH1B | Speedtronic Mark VI Servo Terminal Board","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe GE IS200TSVOH1B operates as a specialized Servo Terminal Board (TSVO) within the General Electric Speedtronic Mark VI turbine control family. This critical hardware assembly serves as the dedicated physical interface between the central control core and the turbine's electrohydraulic servo valves. It channels loop currents to regulate proportional fuel and steam valves while simultaneously processing high-frequency position feedback from Linear Variable Differential Transducers (LVDTs). Procuring this Brand New, original GE terminal board guarantees tight actuator positioning loops, maintains hydraulic stability, and eliminates valve oscillation anomalies that disrupt heavy industrial gas or steam turbine operation.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe table below details the electrical drive profiles, feedback channels, and mechanical connections of the IS200TSVOH1B servo terminal board:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Specification \/ Hardware Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGeneral Electric (GE)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIS200TSVOH1B (Alternates: IS200TSVOH1BBB)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSystem Platform\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSpeedtronic Mark VI\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBoard Classification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eServo Terminal Board (TSVO)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eServo Current Drive Paths\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 independent bi-directional servo valve driver channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFeedback Interfaces\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUp to 4 LVDT or RVDT position sensor inputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eExcitation Signal Output\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7 kHz sinusoidal reference voltage source for LVDT coils\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTermination Interface\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTwo heavy-duty, pluggable barrier terminal strips\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSystem Interconnect\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMulti-pin D-type cables linking to the primary I\/O rack\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0°C to +60°C (+32°F to +140°F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe IS200TSVOH1B utilizes advanced circuit shielding and precise drive mechanics to overcome common closed-loop control failures in rugged hydraulic turbine environments:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Precision Coaxial Shielding Blocks:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDedicated grounding terminal rows shield high-frequency 7 kHz LVDT excitation signals directly at the landing point, preventing cross-talk noise from corrupting nearby sensitive low-voltage analog measurements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBi-Directional Current Loop Control:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe internal driver circuits deliver adjustable, bi-directional current outputs to match the precise null-bias parameters of industrial Moog or Woodward servo valves.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFail-Safe De-energization Pathways:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated watchdog safety relays open the servo drive loops instantly during an emergency shutdown (ESD) condition, forcing the valves to a mechanical zero-flow position to protect downstream hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVibration-Resistant Pluggable Terminals:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe physical barrier block assemblies utilize heavy-duty clamping screws that resist continuous structural cabinet vibration, eliminating intermittent loop resistance and calibration drifting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat functional revision changes does the \"H1B\" suffix specify over the older \"H1A\" model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \"H1B\" design implements upgraded, higher-tolerance filter capacitors and precise shunt resistors in the LVDT demodulation section. These component changes improve thermal stability under long-term high-ambient enclosure temperatures and prevent position feedback drift during continuous operational cycles. The \"H1B\" provides drop-in mechanical and physical backward compatibility for older \"H1A\" networks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do technicians calibrate the servo loop offsets on this board?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe IS200TSVOH1B features a jumper-free, software-driven architecture. Field engineers perform all null-bias adjustments, LVDT calibration sequences, and valve current scaling operations digitally within the GE Toolbox software environment. The digital interface eliminates manual potentiometer tweaking and reduces human error during routine plant maintenance shutdowns.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat specific wiring rule prevents position feedback errors during commissioning?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eField technicians must route the LVDT excitation and feedback leads inside independent, twisted-shielded pairs. Terminate the overall drain shield exclusively at the TSVO grounding plane strip. Never tie the shield to ground at the valve end, as this action creates severe ground loop potentials that degrade the precision of the position control loop.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GE Fanuc","offers":[{"title":"Default Title","offer_id":53487279571128,"sku":"IS200TSVOH1B","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/IS200TSVOH1BBB_3_1_ffc6289d-9250-4c2c-a14a-3f5fa1f7c7e8.jpg?v=1779266652","url":"https:\/\/www.globalpetroparts.com\/products\/ge-is200tsvoh1b-speedtronic-mark-vi-servo-terminal-board","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}