I/O modules

The GE IS200TSVOH1B IS200TSVOH1BFC Termination Servo Board connects valve position sensors to the Mark VI control system. It handles up to eight independent LVDT or RVDT input channels. This board also provides servo output signals for electro-hydraulic converters. You will find it essential for precise turbine governor control.

Core Technical Specifications

The GE IS200TSVOH1B IS200TSVOH1BFC measures 32.5 cm in width and 25.0 cm in height. Its board depth equals 2.5 cm for standard panel mounting. The total assembly weighs approximately 0.8 kilograms. Eight differential LVDT input channels accept ±10 VDC signals. Four servo output channels deliver ±10 mA or ±20 mA current loops.

Connectors and Interfaces

The GE IS200TSVOH1B IS200TSVOH1BFC provides three 37-pin D-sub connectors labeled J1, J2, and J3. J1 handles all LVDT input signals from field transducers. J2 routes the four servo output commands to hydraulic actuators. J3 supplies auxiliary 24 VDC power and monitoring signals. Each connector uses gold-plated pins for reliable contact integrity.

Energy Storage and Signal Conditioning

This termination board does not contain any electrolytic capacitors on signal paths. Consequently, it stores almost no residual energy after power removal. The board includes active low-pass filters for each input channel. These filters remove high-frequency noise from LVDT measurements. Moreover, the GE IS200TSVOH1B IS200TSVOH1BFC integrates overvoltage protection diodes on all inputs. This design prevents damage from accidental 24 VDC contact. You can safely hot-swap this board in a live Mark VI cabinet.

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