GE IS200TSVCH1A Servo I/O Terminal Board
GE IS200TSVCH1A Servo I/O Terminal Board
Desciption
Product Overview
The GE IS200TSVCH1A is a high-reliability servo I/O terminal board engineered for GE’s Mark VIe Speedtronic control system, a cornerstone of turbine automation in power generation, oil & gas, and heavy industrial applications.
This module serves as the critical interface between the Mark VIe controller and electro-hydraulic servo valves, enabling precise actuation of steam or fuel valves while providing real-time feedback through linear variable differential transformers (LVDTs) for position monitoring.
As part of the Mark VIe system, the IS200TSVCH1A processes analog signals from up to eight LVDTs to measure valve positions with sub-millimeter accuracy, ensuring tight control over turbine speed and load.
It supports dual-channel servo current outputs (10–120 mA) for driving three-coil servo valves, making it ideal for applications requiring redundant control loops. The board also integrates two pulse rate inputs for gas turbine fuel flow monitoring, further enhancing its versatility in complex turbine systems.
Distinguishing features of the IS200TSVCH1A include its triple-modular redundancy (TMR) architecture, which supports simplex, dual, or TMR control configurations to eliminate single points of failure.
Its conformal-coated PCB and rugged design ensure reliable operation in harsh environments, with an extended temperature range of -30°C to 65°C. The module’s hot-swappable terminal blocks allow for maintenance without system shutdowns, minimizing downtime in 24/7 industrial operations.
Technical Specifications
Parameter Value
Product Model GE IS200TSVCH1A
Manufacturer GE Vernova (formerly GE Power)
Product Type Servo I/O Terminal Board (Mark VIe Speedtronic)
Input Channels 8 LVDT windings, 2 pulse rate inputs (magnetic/TTL)
Output Channels 2 bi-directional servo current outputs (10–120 mA, 3-coil support)
Power Supply 28V DC (±10%)
Excitation Sources 4 isolated LVTD excitation channels, 2 non-isolated channels
Terminal Block Rating #12 AWG wiring, 24 terminals per block
Operating Temperature -30°C to 65°C (-22°F to 149°F)
Storage Temperature -40°C to 85°C (-40°F to 185°F)
Dimensions (H x W) 33.02 cm x 17.8 cm (13.0” x 7.0”)
Weight 1.2 kg (2.65 lbs)
Redundancy Supports simplex, dual, and TMR control
Compatibility PSVO I/O pack and WSVO servo driver (not compatible with VSVO)
Shielding Chassis-grounded shield bar for EMI reduction