Description
1. Product Description
The IS200VTCCH1CBB serves as a critical interface for temperature measurement in GE’s Mark VI turbine control systems. It accepts 24 thermocouple inputs (grounded/ungrounded) with linearization support via Mark VI software, ensuring accurate temperature data for turbine efficiency and safety. The board features dual cold-junction compensation, high-frequency noise suppression, and a compact design (2.1 × 18.8 × 26.2 cm) with DIN-rail mounting. Key components include an Xilinx Spartan XCS30 FPGA, dual-port SRAM, and DSP for real-time signal processing. Compatible with TBTCH1C (simplex) or TBTCH1B (triple modular redundant, TMR) terminal boards, it supports simplex/TMR configurations for redundant control systems.
2. Product Parameters
| Parameter | Specification |
|---|---|
| Brand | GE Fanuc |
| Series | Mark VI (Speedtronic Turbine Control) |
| Type | Thermocouple Input Terminal Board |
| Input Signals | 24 thermocouples (E/J/K/S/T) or mV (-8 to +45 mV) |
| Compatibility | GE Mark VI systems, TBTCH1C/TBTCH1B boards |
| Dimensions | 2.1 cm (W) × 18.8 cm (H) × 26.2 cm (D) |
| Weight | 0.3 kg (0.66 lbs) |
| Power Supply | 24VDC (via Mark VI chassis) |
| Signal Isolation | Galvanic isolation (grouped per terminal block) |
| Cable Length | Up to 300 m (984 ft) |
| Temperature Range | -40°C to +85°C (operating); -55°C to +125°C (storage) |
| Mounting | DIN rail (Mark VI chassis integration) |
| Protection | Conformal coating (IP20), overvoltage/current protection |
IS200VTCCH1CBB
3. Advantages and Features
- High Precision: Cold-junction compensation and linearization ensure ±0.1% temperature accuracy.
- Redundancy Support: TMR capability via TBTCH1B board for fault-tolerant systems (e.g., offshore turbines).
- Harsh Environment Resilience: Conformal coating resists moisture, dust, and vibration (IEC 60068-2-6 vibration test compliance).
- Scalability: Supports up to 24 thermocouples with 450 Ω max cable resistance for distributed sensor networks.
- Diagnostics: Automatic input validation; signals outside hardware limits are quarantined (GEH-6421 manual compliance).
4. Application Areas and Use Cases
- Industry: Power generation (gas/steam turbines), oil & gas (refineries), manufacturing (rotating machinery).
- Case Study: A U.S. power plant used IS200VTCCH1CBB in a TMR configuration for a 700MW steam turbine. The board’s 24-channel temperature monitoring detected a 120°C hot spot in a bearing during startup, triggering a proactive shutdown. This prevented $1.5M in repair costs and 48 hours of downtime.
5. Competitive Comparison
Compared to standard thermocouple input modules:
- Channel Density: 24 inputs (vs. 12–16 in most alternatives).
- Redundancy Flexibility: Native TMR support (no external adapters).
- Signal Range: Wider mV span (-8 mV to +45 mV vs. typical 0–20 mV).
- Environmental Rating: Conformal coating standard (vs. optional in 竞品).
IS200VTCCH1CBB
6. Selection Recommendations
- System Type: Use with GE Mark VI systems (Frame 5/6/7 turbines) requiring temperature monitoring.
- Redundancy: Pair with TBTCH1B for TMR systems (critical applications like nuclear backup power).
- Environment: Select conformal coating for coastal/moist environments; derate for >50°C ambient.
- Expansion: Combine with IS215VCMIH1B (communication module) for full Mark VI integration.
7. Precautions
- Installation:
- Follow ESD protocols (anti-static gloves, grounded workspace).
- Torque terminal screws to 0.5–0.7 N·m; avoid loose connections.
- Maintenance:
- Inspect capacitors for swelling every 3 years (expected lifespan: 10 years).
- Verify cold-junction accuracy annually (±0.5°C tolerance).
- Safety:
- Disconnect power before servicing (24VDC isolation required).
- Avoid exposure to conductive dust; IP20-rated (indoor use only).
