GE IS200VSVOH1BDC Servo Control Card for Mark VI Turbine Control

Overview

The GE IS200VSVOH1BDC is a servo control card designed for the Mark VI Turbine Control System, part of GE’s renowned Speedtronic product family. It provides precise control and monitoring for servo valve interface applications, supporting both pulse rate inputs and servo loop feedback. This board is widely used in steam, gas, and wind turbine systems.

Key Features

Supports 2 to 3 coil servos
Compatible with LVDT/LVDR feedback sensors
Bi-directional current outputs
Handles pulse rate inputs (2 Hz – 14 kHz)
Designed for servo valve interface I/O applications
Three onboard LEDs: Run, Fail, Status
Suitable for TMR (Triple Modular Redundant) systems
Interfaces with active and passive speed sensors
Works with Backup Protection Modules for extended input support

Hardware and Revisions

Product Code: IS200VSVOH1BDC
Functional Acronym: VSVO
Revision Levels:
- B: Functional upgrade
- D: Secondary functional revision
- C: Artwork/layout revision
Mounting: Standard GE Mark VI rack
System Integration: Works with Speedtronic Mark VI I/O and protection modules
Documentation: Refer to GEH-6421C and GER-4193A system guides

Technical Specifications

Parameter	Specification
Manufacturer	GE Industrial Systems
Series	Mark VI IS200
Functional Description	Servo Control Card
Input Type	Pulse Rate / Servo Valve I/O
Pulse Input Frequency Range	2 Hz to 14,000 Hz
Supported Servo Coils	2 or 3 coils (3 recommended for TMR)
Feedback Types	LVDT / LVDR / Pulse Rate
Speed Sensor Types	Active and Passive
Cold Excitation Requirement	AC Excitation for LVDTs
Channel Configuration	4 Servo Channels
Feedback Sensor Redundancy	Median, High, or Low select via software
LEDs	RUN, FAIL, STATUS

Applications

Steam turbine control
Gas turbine regulation
Wind turbine servo systems
Flow divider feedback loops
High-reliability TMR-based installations

Why Choose This Module

As a legacy GE Speedtronic Mark VI component, the IS200VSVOH1BDC offers proven reliability in demanding turbine control systems. It enables accurate, stable servo control with support for sensor redundancy and advanced diagnostics.