GE IS200TSVCH1ADC S1CX01H Servo I/O Terminal Board for TSV Control

Mark VI/VIe Speedtronic Servo I/O Terminal Board for Turbine Stop Valve (TSV) Position Control, LVDT Feedback & Safety Interlock

1. Core Product Overview

The GE IS200TSVCH1ADC S1CX01H is a Servo I/O Terminal Board (TSVC) for Mark VI/VIe Speedtronic turbine control systems, dedicated to Turbine Stop Valve (TSV) position control, LVDT/RVDT feedback processing, and safety interlock execution in gas/steam turbine applications. As a key servo control component, it features 4‑channel LVDT/RVDT position feedback inputs, ±20mA analog servo outputs for hydraulic/pneumatic actuators, dual 24V DC redundant power inputs, and relay outputs for alarm/interlock triggering. The board integrates with Mark VI/VIe backplane via VME bus, supporting simplex/dual redundancy for fault‑tolerant operation, and includes removable terminal strips for secure wiring and LED indicators for power, position status, and communication health. It is designed for -40°C to +70°C industrial environments, with conformal coating and IP20 protection for reliable performance in harsh power generation, oil & gas, and petrochemical settings.

• Core Role: TSV position control; LVDT/RVDT feedback processing; servo valve actuation; safety interlock execution; Mark VI/VIe backplane integration            • Model Info: IS200TSVCH1ADC (full part number); S1CX01H (serial code); TSVC servo I/O terminal board; Mark VI/VIe Speedtronic series            • Key Specs: 4×LVDT/RVDT inputs; ±20mA servo outputs; dual 24V DC power; -40°C~+70°C operating temp; IP20 protection; 24‑month warranty            • Reliability: Simplex/dual redundancy; power redundancy; surge suppression; industrial EMC immunity; CE/UL certified

2. I/O Configuration & Signal Processing

The IS200TSVCH1ADC S1CX01H employs high‑precision signal processing for LVDT/RVDT position feedback, converting analog signals to digital data for real‑time position control of TSVs. It provides ±20mA analog servo outputs to drive hydraulic/pneumatic actuators, ensuring precise valve positioning, while dual redundant power inputs prevent single‑point power failures from disabling servo functions. The board features 4‑channel LVDT/RVDT inputs with 16‑bit resolution, supporting linear/rotary position feedback, and 2‑channel ±20mA servo outputs with 12‑bit resolution for accurate actuator control. It includes 24V DC relay outputs (2A contacts) for alarm/interlock triggering and digital inputs for valve open/close commands and emergency shutdown (ESD) signals. Removable terminal strips enable easy wiring maintenance, and LED indicators provide real‑time status feedback for power, position, and communication health.

• Inputs: 4×LVDT/RVDT (position feedback); 4‑20mA analog (auxiliary monitoring); digital inputs (valve commands, ESD signals)            • Outputs: ±20mA analog servo outputs (actuator control); 24V DC relay outputs (alarms/interlocks); status LEDs (power, position, communication)            • Signal Processing: LVDT/RVDT signal conditioning; 16‑bit A/D conversion; servo output calibration; digital filtering; fault diagnostics            • Redundancy: Dual 24V DC power; simplex/dual controller communication; cross‑wired servo logic; fault isolation between channels

3. Integration & Compliance

The IS200TSVCH1ADC S1CX01H integrates with Mark VI/VIe controllers via VME backplane, enabling real‑time status monitoring and servo command execution. It supports ToolboxST software for configuration, fault diagnostics, and firmware updates, with LED indicators for quick visual inspection of power, position, and communication health. The board complies with IEEE 802.3/802.3u/802.3x standards, with IP20 protection, conformal coating, and -40°C~+70°C operating temperature range to withstand dust, vibration, and extreme temperatures in industrial cabinets. It is certified CE, UL 61010, and IEC 61508 (SIL 3 capable in certified architecture), ensuring safe operation in Class I, Div 2/ATEX Zone 2 hazardous locations.

• System Integration: Mark VI/VIe UCSC/VCMI compatibility; TSV servo control; LVDT/RVDT interface; ToolboxST configuration; real‑time alarm reporting            • Power Supply: Dual 24V DC inputs; overvoltage/undervoltage protection; max 15W power consumption; power failure alarm; redundant power switching            • Compliance: CE/UL 61010/IEC 61000‑4; Class I, Div 2/ATEX Zone 2; industrial EMC immunity; RoHS compliant            • Environmental: -40°C~+70°C operating temp; 5–95% non‑condensing humidity; IP20 protection; conformal coating

4. Safety & Industrial Applications

The IS200TSVCH1ADC S1CX01H is built for industrial safety and reliability, with dual redundant power inputs and simplex/dual controller communication to prevent single‑point failures from disabling TSV control functions. Its LVDT/RVDT feedback processing ensures accurate valve position monitoring, triggering safety interlocks if positions exceed predefined thresholds, and ±20mA servo outputs enable rapid response to emergency shutdown (ESD) commands. The board meets IEC 61508 SIL 3 requirements in certified architectures, with low‑latency communication for critical safety interlocks (e.g., overspeed, flameout). Typical applications include gas/steam turbine control, combined cycle power plants, oil & gas compressors, and petrochemical process control, where reliable, real‑time servo control is essential for safe and efficient operation.

• Safety Features: TSV position interlock; overspeed trip; flameout detection; ESD execution; fail‑safe servo actuation; SIL 3 capability (certified architecture)            • Industrial Sectors: Power generation (gas/steam turbines); oil & gas (upstream/midstream); petrochemical; chemical processing; turbine OEMs; critical infrastructure            • System Topologies: Simplex (single board); dual (redundant pair); TSV control loop; LVDT/RVDT feedback; safety interlock network            • Network Security: I/O isolation; fault diagnostics; real‑time alarm reporting; access control via ToolboxST; network fault monitoring

5. Installation & Maintenance