Description

GE IS200VSV0H1B / IS200VSV0H1BDC Product Description

Technical Specifications

• Product Model: IS200VSV0H1B (IS200VSV0H1BDC)
• Brand: General Electric (GE)
• Warranty: One Year
• Input Voltage: 5VDC internal logic power, 24VDC rack auxiliary power supply
• Operating Temperature: -20°C to +65°C
• Storage Temperature: -40°C to +85°C
• Response Time: ≤100μs position loop update cycle
• Protection Class: IP20 (for closed control cabinet VME rack mounting only)
• Accuracy Class: 0.05% full-scale position feedback sampling accuracy
• Output Frequency: 2Hz – 14,000Hz pulse rate input processing range
• Rated Current Range: 0–300mA per servo valve drive channel
• Communication Interface: Standard 6U VME64 backplane bus, J5 external field wiring connector, dual Ethernet ports
• Supported Protocols: GE Mark VI internal VME rack protocol, TCP/IP for system diagnostics
• Overload Capacity: 120% transient voltage surge withstand for 15 seconds
• Dimensions: 241mm (H) × 194mm (W) × 152mm (D)
• 

Product Overview

The IS200VSV0H1B/IS200VSV0H1BDC is a VME form factor VSVO servo control circuit board engineered exclusively for the GE Speedtronic Mark VI and Mark VIe gas & steam turbine control systems, serving as the core closed-loop position controller for critical turbine governing valves. Equipped with four independent servo drive channels, this module generates analog command signals to drive electro-hydraulic servo valves for fuel gas admission, steam inlet control, bypass and blow-off valve actuation. It delivers AC excitation for LVDT/RVDT position sensors, demodulates feedback signals in real time, and executes high-speed PID position loop calculations to maintain precise valve opening under fluctuating load conditions.

This component resolves critical operational vulnerabilities in thermal power generation assets, including inaccurate valve positioning leading to combustion instability, turbine speed drift, unbalanced load distribution, and delayed protective valve actuation during abnormal operating events. Its built-in signal isolation circuits suppress electromagnetic interference from large generators, variable frequency drives and high-voltage switchgear, while configurable redundancy logic supports both simplex standalone deployment and triple modular redundant (TMR) fault-tolerant architecture required for SIL-rated power plant safety frameworks.