GE IS200TSVCH1AJE Servo Terminal Board
Description:
As GE Servo Input/Output (TsVC) terminal board, IS200TSVCH1AJE interfaces to two electro-hydraulicservo valves that actuate the steam/fuel valves. Valve position is measured withlinear variable differential transformers (LVDT). TSVC is designed specially for thePSVO IO pack and the WsvO servo driver, and will not work with the VSVoprocessor. The terminal board supports simplex, dual., and TR control. Three 28 Vdc supplies come in through plug J28. Plugs ID1 or JD2 are for an external trip firomthe protection module.

The TSVC servo terminal board provides two channels consisting of bi-directionalservo current outputs, LVDT position feedback, LVDT excitation, and pulse rateflows inputs. It provides excitation for, and accepts inputs from, up to eight LVDTvalve position inputs. There is a choice of one. two, three. or four LVDTs for eachservo control loop. The two pulse rate inputs are used for gas turbine fuel flow measurement.

Each servo output is equipped with an individual suicide relay under firmwarecontrol that shorts the PSVO output signal to signal common when de-energized, andrecovers to nominal limits alter a manual reset command is issued. Diagnosticsmonitor the output status of each servo voltage, current, and suicide relay.

Each of the servo output channels can drive either one or two-coil servos in simplexapplications, or two or three-coil servos in TR applications. The two-coil TMRapplications are for 200# oil gear systems where each of two control pack drive onecoil each, and the third control pack has no servo coil interface. Servo cable lengthsup to 300 m (984 ft) are supported with a maximum two-way cable resistance of 1502. Since there are many types of servo coils, a variety of bi-directional currentsources are jumper selectable.

The three Jl connectors for the PSVO lO packs are <R><S>. and <T>. These pluginto the DC-37 pin connector with latching fasteners, and bolt to a side bracketholding the packs in place.
The three J2 connectors for the WSVO servo drivers are R. S. and 'T. Each WSO isheld down with four screws. The WSVO servo driver and PSVO I/O pack areordered as a set and should be replaced if diagnostics indicate a servo problem.

Related items:
IS230TNSVH3A
IS210WSVOH1AE
IS220PSVOH1B