GE IS200TBCIH1C Contact Input Terminal Board

Technical Specifications

• Manufacturer: General Electric
• Model: IS200TBCIH1C
• Series: Speedtronic Mark VI/VIe
• Input Channels: 24 dry contact inputs
• Terminal Blocks: 2 barrier-type terminal blocks (24 terminals each, 48 total)
• Excitation Voltage: 125 V DC nominal
• Input Current: 2.5 mA per point (first 21 inputs); 10 mA per point (last 3 inputs)
• Power Consumption: 20.6 W
• Operating Temperature: -30°C to +65°C (-22°F to 149°F)
• Dimensions (H×W): 33.02 × 10.16 cm (13.0 × 4.0 in)
• PCB Material: Multilayer PCB with SMD components
• Certifications: NEMA Class G creepage and clearance compliant
• Country of Origin: United States

Key Features

1. 24-Channel Dry Contact Input
   • Supports 24 independent dry contact inputs for connecting limit switches, pressure switches, level switches, and other contact-based field devices.
   • Two terminal blocks with clear numbering (1–48) enable organized and simplified wiring.
2. Enhanced Signal Protection
   • Integrated noise suppression circuitry and metal oxide varistors (MOVs) to protect against voltage surges, high-frequency noise, and electrical interference.
   • Isolated input circuitry ensures signal integrity and reduces the risk of damage to the main control board.
3. Diagnostic & Monitoring Capabilities
   • Monitors excitation voltage; triggers a diagnostic warning if voltage drops below 40% of the nominal value.
   • Provides real-time status of all contact inputs for quick fault detection and system health monitoring.
4. Robust Industrial Design
   • Rugged multilayer PCB construction for durability in harsh industrial environments.
   • Wide operating temperature range accommodates extreme conditions in power generation facilities.
   • Designed for easy installation and maintenance with standard Mark VI system compatibility.

Application Scenarios

• Power Generation
  • Gas Turbine Control: Connects limit switches, pressure switches, and flame detectors in GE Mark VI/VIe gas turbine systems.
  • Steam Turbine Monitoring: Collects contact signals from valve position switches, speed sensors, and emergency stop devices in steam turbine control systems.
• Oil & Gas Industry
  • Compressor Control: Interfaces with pressure, temperature, and flow switches in gas compressor stations.
  • Pipeline Monitoring: Monitors contact-based sensors for leak detection and valve status in oil and gas pipelines.
• Industrial Process Control
  • Chemical Plants: Connects limit switches and safety interlocks in chemical processing units.
  • Water Treatment: Monitors level switches, flow switches, and pump status in water and wastewater treatment facilities.