IS200TSVOH1B | GE Terminal Board

Description

Part Number: IS200TSVOH1B Manufacturer: General Electric Series: Mark VI Country of Manufacture: United States (USA) Size: 17.8 cm high x 33.02 cm wide IS200TSVOH1B is a Servo Terminal Board developed by General Electric.  It is a part of Mark VI turbine control system.  The TSVO connects to two electro-hydraulic servo valves, which operate the steam/fuel valves.  Linear variable differential transformers are used to measure valve position (LVDT).  Two cables to the I/O processor (VSVO) use the J5 plug on the front of the VSVO and the VME rack's J3/4 connectors.  The JR1 connector is used for Simplex signals, and the JR1, JS1, and JT1 connectors are used for TMR signals.  JD1 and JD2 are plugs for an external trip from the protection module.

IS200TSVOH1B Installation

Sensors and servo valves are wired directly to the terminal board's two I/O terminal blocks.  Each block is held together with two screws and has 24 terminals that accept wiring up to #12 AWG.  To the left of each terminal block is a shield termination strip connected to chassis ground.  External trip wiring is connected to JD1 or JD2.  In TMR configuration, each servo output can have three coils.  JP1-6 is used to jumper select each coil current.

Operation

The servo board has four channels: bi-directional servo current outputs, LVDT position feedback, LVDT excitation, and pulse rate flows inputs.  The TSVO can excite and accept input from up to six LVDT valve position inputs.  For each servo control loop, one, two, three, or four LVDTs are available.  These signals come through TSVO and go directly to the VSVO board front at J5 if three inputs are used. In Simplex applications, each servo output channel can drive one or two coil servos, while in TMR applications, each servo output channel can drive two or three coil servos.  The two-coil TMR applications are for 200# oil gear systems with two control modules driving one coil each and no servo coil interface on the third control module. With a maximum two-way cable resistance of 15 ohm, servo cable lengths of up to 300 meters (984 feet) are supported.  Because servo coils come in a variety of shapes and sizes, a number of bidirectional current sources are jumper selectable.

Characteristics Number of inputs TSVO

6 LVDT windings 2 pulse rate signals (total of 2 per VSVO) External trip signal

Number of outputs

2 servo valves (total of 4 per VSVO board) 4 excitation sources for LVDTs 2 excitation sources for pulse rate transducers

LVDT excitation output

Frequency of 3.2 ±0.2 kHz Voltage of 7.00 ± 0.14 V rms

Fault detection

Servo current out of limits or not responding Regulator feedback signal out of limits.

Failed ID chip.

Other Characteristics

Power supply voltage: Nominal 24 V dc Pulse rate input: Minimum signal for proper measurement at 2 Hz is 33 mVpk, and at 12 kHz is 827 mVpk. Magnetic PR pickup signal: Generates 150 V p-p into 60 K ohm Active PR Pickup Signal: Generates 5 to 27 V p-p into 60 K ohm Size: 17.8 cm high x 33.02 cm wide Technology: Surface mount

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