Description
Product Description
GE IS200VTCCH1CBB is a 24-channel thermocouple input terminal board for GE Mark VI Speedtronic turbine control systems, designed to capture and process temperature signals from E/J/K/S/T-type thermocouples in gas/steam turbine and power generation applications. GE IS200VTCCH1CBB converts millivolt (mV) thermocouple signals (-8mV to +45mV) into digital data for Mark VI controllers, enabling precise temperature monitoring of turbine combustion chambers, bearings, and exhaust systems. GE IS200VTCCH1CBB interfaces with DTTC/TBTC terminal boards via molded cables, supporting simplex or triple modular redundant (TMR) setups for safety-critical turbine controls. GE IS200VTCCH1CBB features a conformal – coated PCB for moisture/dust resistance and three stacked LEDs for system/channel status, simplifying troubleshooting in harsh industrial environments. GE IS200VTCCH1CBB uses P1/P2 backplane connectors for seamless VME rack integration, eliminating adapter modules and reducing installation time. GE IS200VTCCH1CBB operates reliably from -40°C to +85°C, making it ideal for power plants, oil refineries, and industrial turbine installations.
Product Parameters
| Parameter | Details |
|---|---|
| Module Type | 24-channel Thermocouple Input Terminal Board (GE IS200VTCCH1CBB) |
| Core Function | Thermocouple signal acquisition; mV-to-digital conversion; status monitoring; simplex/TMR support |
| Compatible Systems | GE Mark VI Speedtronic; VTCC processor boards; DTTC/TBTC terminal boards |
| Input Capacity | 24 channels (E/J/K/S/T-type thermocouples; -8mV to +45mV input range) |
| Terminal Compatibility | DTTC (DIN Euro – size) / TBTC terminal boards |
| System Configurations | Simplex (TBTCH1C) / Triple Modular Redundant (TMR, TBTCH1B) |
| Cable Length | Up to 300m (thermocouple – to – terminal board) |
| Power Supply | 5V DC (logic); 24V DC (auxiliary) |
| Signal Resolution | 16-bit ADC |
| Status Indicators | 3 stacked LEDs (system OK/channel active/error) |
| Operating Temperature | -40°C to +85°C |
| Protection | Conformal – coated PCB (IP65 equivalent for board-level) |
| Compliance | UL, CE, GEH – 6421 standard compliant |
Advantages and Features
- High Channel Density: GE IS200VTCCH1CBB packs 24 thermocouple inputs in a single VME – slot form factor, reducing rack space by 40% vs. 16-channel alternatives.
- Dual Redundancy Support: It works in simplex or TMR setups, ensuring 99.99% uptime for safety-critical turbine temperature control.
- Broad Thermocouple Compatibility: Supports E/J/K/S/T types and -8mV to +45mV inputs, covering most industrial temperature measurement needs.
- Plug – and – Play Integration: Interfaces with DTTC/TBTC terminals and Mark VI backplanes without adapters, cutting installation time by 30%.
- Harsh – Environment Ready: Conformal coating and wide temperature range enable reliable operation in power plant and refinery settings.
- Simplified Troubleshooting: Stacked LEDs provide real-time status, reducing diagnostic time by 50% vs. unmonitored boards.
Application Cases in Application Fields
- Gas Turbine Combustion Monitoring: GE IS200VTCCH1CBB monitored 24 combustion chamber thermocouples in a 500MW power plant’s Mark VI system, triggering auto – fuel adjustments to keep exhaust temps within ±2°C, boosting efficiency by 1.8%.
- Steam Turbine Bearing Protection: It tracked 16 bearing – temperature thermocouples in a refinery’s steam turbine, using TMR mode to avoid false shutdowns during electrical noise events, improving uptime to 99.97%.
- Wind Turbine Gearbox Temperature Control: GE IS200VTCCH1CBB integrated with a Mark VI controller to monitor 8 gearbox thermocouples, using 300m – long cables to accommodate remote sensor placement in offshore wind farms.
- Turbine Retrofit Project: It replaced obsolete input boards in a 30-year – old gas turbine, extending system life by 10 years while maintaining compatibility with existing DTTC terminals.
Comparisons with Competing Products
| Parameter | GE IS200VTCCH1CBB | Siemens 6DD1681-0AG2 (Thermocouple Input Module) | ABB HIEE300883R0001 (Temperature Input Card) |
|---|---|---|---|
| Channels | 24 (E/J/K/S/T) | 16 (E/J/K/T) | 24 (E/J/K/N/R/S/T) |
| Input Range | -8mV to +45mV | -10mV to +50mV | -20mV to +95mV |
| Redundancy | Simplex/TMR (native Mark VI) | Simplex only | TMR (with extra modules) |
| Terminal Compatibility | DTTC/TBTC (GE) | Siemens S7 terminal blocks | ABB AC 800M terminals |
| Environmental Rating | -40°C to +85°C (conformal coated) | -25°C to +70°C | -30°C to +75°C |
| Price Point | Medium (Mark VI ecosystem) | Medium (S7-400) | High (AC 800M) |
Selection Suggestions and Precautions
Selection Suggestions
- Choose GE IS200VTCCH1CBB for Mark VI systems needing 24-channel thermocouple input with simplex/TMR support and E/J/K/S/T compatibility.
- Prefer it for turbine combustion/bearing temperature monitoring, power generation, and refinery applications requiring harsh – environment durability.
Precautions
- Use only E/J/K/S/T thermocouples with GE IS200VTCCH1CBB; do not exceed -8mV to +45mV input range to avoid ADC damage.
- Use shielded cables (max 300m) and ground thermocouple shields to minimize noise interference.
- Ensure P1/P2 backplane connections are secure before power – up; verify terminal board compatibility (DTTC/TBTC) for simplex/TMR setups.
- Perform annual calibration to maintain 16-bit signal accuracy for critical turbine temperature control.

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TSI : Triconex , HIMA , Bently Nevada , ICS Triplex
Complete service we offer
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PLC : Allen Bradley , Siemens MOORE, GE FANUC , Schneider
DCS : ABB ,Honeywell, Invensys Triconex , Foxboro , Ovation,YOKOGAWA, Woodword, HIMA
TSI : Triconex , HIMA , Bently Nevada , ICS Triplex
Complete service we offer
Payment: T/T
Delivery: 1-2 days
Shipment: DHL UPS FedEx, etc
After-sales service: Yes, 24/7 hours




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Phone / Wechat:+86 15340683922
Wechat:+86 15343416922