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GE IS200VSVOH1BDC Servo Control Board

Configured for electro-hydraulic servo valve current regulation in the GE Mark VI Speedtronic Turbine Control System, the GE IS200VSVOH1BDC (IS200VSVO Servo Control Board) provides direct physical/electrical execution for valve actuator positioning through analog command input and LVDT feedback processing.

Hardware Specifications

Parameter	Specification
Model	IS200VSVOH1BDC
Brand	GE
Origin	United States
Weight	0.45 kg
Dimensions	26 x 15 x 3 cm
Operating Temp	-20 to +60 deg C
Power Consumption	Not specified; powered from VME backplane +5 V and +/-15 VDC rails
Series	Mark VI Speedtronic Turbine Control System
Module Type	Servo Control Board (VSVO)
Servo Outputs	2 independent channels, +/-200 mA current drive
Input Signals	+/-10 V analog command input
Conversion Resolution	16-bit digital-to-analog conversion
Feedback Interface	LVDT valve position feedback input
Isolation	Optical isolation between control logic and field circuits
Protection	Overcurrent, short-circuit, and thermal protection
Environmental Protection	Conformal coating for humidity, dust, and corrosive atmosphere resistance
Diagnostics	Built-in self-test and LED channel status indicators

Industrial Servo Actuation and Feedback Control Characteristics

The IS200VSVOH1BDC generates regulated current outputs for electro-hydraulic servo valves within the GE Mark VI control architecture. The board receives analog command signals from the controller and converts control data into actuator drive currents for valve positioning.

The module supports closed-loop actuator control using LVDT feedback signals. Firmware-independent hardware processing maintains compatibility with Mark VI simplex and TMR configurations. The servo output stage includes current regulation and protection functions for actuator loop operation.

Frequently Asked Questions

Q: What type of actuator devices are controlled by the IS200VSVOH1BDC?
A: The board controls electro-hydraulic servo valves used for fuel valve, steam valve, and compressor valve positioning.

Q: How many servo output channels are available on the module?
A: The module provides two independent servo output channels with +/-200 mA current drive capability.

Q: What feedback signal is used for valve position monitoring?
A: The module accepts LVDT (Linear Variable Differential Transformer) feedback signals for valve position measurement.

Field Installation Guidelines

Install the IS200VSVOH1BDC in the assigned GE Mark VI VME rack location and verify the backplane connector alignment before applying system power. Confirm that the rack power supply levels match the required VME backplane voltage rails.

Connect servo valve wiring separately from high-current switching circuits to reduce electromagnetic interference. Maintain proper cable shielding and grounding practices for analog command and LVDT feedback wiring.

Verify servo output polarity, actuator wiring, and feedback channel assignment during commissioning. Inspect board connectors, field terminals, and cabinet grounding points before system operation.

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