IS200VSVOH1B GE MKVI, VME Servo Card-colletplc

Description:

IS200VSVOH1B is a VME Servo Control Board manufactured by General Electric as part of the Mark VI Series used in gas turbine control systems. The four electro-hydraulic servo valves that operate the steam/fuel valves are under the direction of the Servo Control (VSVO) board. Typically, two servo terminal boards are used to separate these four channels (TSVO or DSVO). Using linear variable differential transformers, the valve position is determined (LVDT).

The VSVO executes the loop control algorithm. On the front panel's J5 plug and the J3/J4 connectors on the VME rack, three cables connect to VSVO. The JR1 connector is used by
TSVO delivers simplex signals, while the JR1, JS1, and JT1 connectors are used to fan out TMR signals. External trips from the protection module are plugged into JD1 or JD2.
IS200VSVOH1B Installation
Turn off the processor rack for the VME.
Place the board in place and use your hands to press the top and bottom levers into the seat of the edge connectors.
Tighten the captive screws on the front panel's top and bottom.
Cable connections to the TSVO terminal boards are made at the lower J3 and J4 connectors on the VME rack. To secure the cables, they are latching connections. Start the VME rack and look at the diagnostic lights on the front panel.

IS200VSVOH1B Operation
LVDT position feedback, LVDT excitation, bidirectional servo current outputs, and pulse rate flows inputs are all included in VSVO's four channels.
Up to six LVDT valve position inputs can be provided excitation for by the TSVO, which also accepts input from them. For each servo control loop, there is a choice of one, two, three, or four LVDTs.
For applications measuring gas turbine flow, three inputs are offered. These signals pass through TSVO and are sent straight to J5 on the VSVO board front. When de-energized, each servo output has a dedicated suicide relay that, when controlled by firmware, shorts the VSVO output signal to signal common before returning to normal operation upon a manual reset instruction.
Each servo's output voltage, current, and suicide relay are all monitored by diagnostics.

Datasheet Link:

IS200VSVOH1B GE MKVI, VME Servo Card Datasheet