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H1：IS200TSVCH2ADC MRP061873 GE TSVC‑2 Servo Valve Terminal Board for Mark VI / Mark VIe Speedtronic Turbine Control
Product Overview IS200TSVCH2ADC is the second‑generation TSVC‑2 servo terminal board within GE IS200 hardware family for Mark VI and Mark VIe turbine control racks. MRP061873 is GE material reference part number for this assembly, used for OEM spare‑part ordering, traceability and stock identificationSAUL ELECT…. Compared with first‑generation TSVC boards (IS200TSVCH1‑series), the TSVC‑2 hardware offers expanded channel capacity for larger turbine valve configurations.
This terminal board works in pair with PSVO servo I/O pack inside control cabinet, serving as physical signal interface between controller and field‑mounted electro‑hydraulic servo valves, LVDT position transducers and magnetic‑pickup speed sensors. It delivers multi‑channel bidirectional servo‑current drive for gas control valves (GCV), inlet guide vanes (IGV) and multiple steam governing valves, while acquiring high‑precision LVDT position feedback for closed‑loop valve‑position regulation. On‑board voting relays and comprehensive hardware diagnostics support simplex, dual and full TMR triple‑modular redundant architecture to satisfy power‑plant safety requirements.
IS200TSVCH2ADC MRP061873 is end‑of‑life legacy hardware; original OEM manufacturing has been discontinued. Global power‑plant maintenance markets source surplus new, pulled‑used and fully refurbished tested units for spare‑part replacement and cabinet retrofit projects. Conformal‑coated PCB construction ensures stable performance under high‑noise, high‑humidity turbine cabinet environments.
H2：Key Features of IS200TSVCH2ADC MRP061873
‑ Second‑generation TSVC‑2 servo terminal hardware, designed to pair with PSVO I/O pack for Mark VI / Mark VIe racks ‑ Expanded multi‑channel bidirectional configurable servo‑current outputs for driving multiple electro‑hydraulic servo valves ‑ Extended LVDT winding input capacity for high‑accuracy multi‑valve position‑feedback measurement ‑ 2 pulse‑rate input channels compatible with magnetic‑pickup or TTL‑level turbine‑speed signals ‑ Integrated voting relay group including safety suicide relay for servo‑loop interlock and fault protection ‑ Supports simplex, dual and TMR triple‑modular redundant system deployment ‑ Embedded hardware diagnostics for fault detection, status reporting and alarm indication ‑ Multiple barrier terminal blocks plus multi‑pin D‑sub backplane connectors for reliable field wiring ‑ Conformal‑coated PCB for dust‑resistant and humidity‑resistant cabinet‑mount installation ‑ Optimized for large‑frame gas‑turbine sites requiring higher quantity of controlled valves ‑ MRP061873 is GE material reference number for part traceability and spare‑part procurement
H2：Technical Specifications
‑ Full Part Number：IS200TSVCH2ADC MRP061873 ‑ Brand：General Electric (GE Vernova) ‑ Product Type：TSVC‑2 Second‑Gen Servo Valve Terminal Board ‑ Applicable System：Mark VI, Mark VIe Speedtronic Turbine Control System ‑ Matching I/O Pack：PSVO pack ‑ Servo Output：Multi‑channel bidirectional servo‑current outputs ‑ LVDT Input：Extended‑count winding inputs for multi‑valve position feedback ‑ Pulse‑Rate Input：2 channels (magnetic pickup / TTL compatible) ‑ Nominal Supply Voltage：24 VDC ‑ Mounting：Backplane rack‑mount inside GE Mark VI series control cabinet ‑ Operating Temperature：‑30 ℃ ~ +65 ℃ ‑ Board Treatment：Conformal‑coated PCB ‑ Material Reference Code：MRP061873 ‑ Hardware Generation：TSVC‑2 (second‑generation TSVC, upgrade over IS200TSVCH1‑series) ‑ Main Application：Large‑frame gas turbine, steam turbine combined‑cycle power plants, captive‑power‑station assets
H2：Typical Application Scenarios
IS200TSVCH2ADC MRP061873 is widely deployed on legacy large‑capacity GE turbine‑based power‑generation assets:
- Combined‑cycle power‑plant large‑frame gas‑turbine multi‑valve GCV and IGV closed‑loop position control
- Multi‑valve steam‑turbine governing‑valve adjustment and LVDT feedback‑monitoring tasks
- Industrial captive‑power‑plant Mark VI / Mark VIe spare‑part replacement for high‑valve‑count configurations
- Legacy turbine‑control cabinet overhaul and system‑migration retrofit projects
- Oil‑and‑gas on‑site large‑capacity power‑generation equipment maintenance work
H2：Common Board Failure Symptoms
Degraded or faulty IS200TSVCH2ADC MRP061873 may trigger serious operational risks: unstable servo‑drive output, valve hunting, LVDT‑signal dropout, inaccurate valve‑position readings, intermittent valve‑actuation or turbine‑load fluctuation. Static‑sensitive PCB; strict ESD protection is mandatory during handling and installation. Timely spare‑part replacement avoids costly unplanned plant outages.
H2：Our Supply of
We supply IS200TSVCH2ADC MRP061873 in multiple conditions: surplus new, tested used, fully refurbished. Every unit undergoes comprehensive hardware‑function testing before shipment. ‑ Full‑function hardware inspection prior to dispatch ‑ ESD anti‑static industrial‑grade packaging ‑ Global worldwide‑shipping support ‑ Contact us to check real‑time stock status and lead‑time
H2：Frequently Asked Questions
Q1：What does MRP061873 stand for? A1：MRP061873 is GE internal material reference number for IS200TSVCH2ADC assembly, used for ordering and spare‑part traceability.
Q2：What is the difference between TSVC‑2 IS200TSVCH2ADC and TSVC‑1 IS200TSVCH1‑series? A2：IS200TSVCH2ADC belongs to second‑generation TSVC‑2 platform with expanded channel capacity, suitable for turbines with larger quantity of servo‑controlled valves.
Q3：Which I/O pack does IS200TSVCH2ADC MRP061873 work with? A3：It must be paired with PSVO I/O pack for Mark VI / Mark VIe racks.
Q4：What is the core function of this TSVC‑2 board? A4：It outputs multi‑channel servo‑drive signals to electro‑hydraulic servo valves and collects LVDT‑position feedback to achieve closed‑loop multi‑valve control for large‑frame gas and steam turbines.
Q5：Is IS200TSVCH2ADC MRP061873 still under OEM production? A5：This is end‑of‑life legacy hardware; original OEM manufacturing has stopped. Market supply comes from surplus and refurbished inventory.
Q6：Will you test the board before delivery? A6：Yes, all units receive complete hardware‑function inspection before packing and shipment.
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