I/O modules

Core Servo Control for Turbine Actuators

The GE IS200VNH1B is a VME-based servo card within the Mark VI Speedtronic turbine control system . This module provides precise position control for actuators and valves. It handles up to eight input/output channels with a signal accuracy of ±0.1% deviation . Consequently, it ensures accurate fuel valve positioning and steam admission control for turbine regulation.

High-Precision Signal Processing and Connectivity

This servo card features an input voltage range of 0–5 VDC and consumes less than 10 watts of power . Its design includes two terminal blocks on the left half, housing up to 48 silver cube-shaped terminals labeled 1 through 48 . Three medium-sized connector ports line the right edge of the board for secure system integration. The board also features ten evenly spaced potentiometers in the center section and four additional potentiometers on the lower right corner for fine-tuning signal calibration .

Technical Specifications and Physical Dimensions

Engineers designed this module for seamless integration into VMEbus backplanes. Its compact form factor, measuring 160 mm in height and 233.5 mm in width, provides efficient use of cabinet space . The board’s pin-based connectors ensure secure installations in high-vibration environments . The following table details its key functional and physical parameters.

Application in Heavy-Duty Turbine Systems

System integrators use this board to provide precise servo control in dual Mark VIe control architectures . The module ensures reliable operation even during I/O pack or network component failure . Therefore, sourcing tested units from specialized suppliers is essential for turbine lifecycle management.

Details