GE IS200TDBTH2ABC TMR Discrete Contact Input Terminal Board

Product Description

The GE IS200TDBTH2ABC is a TMR discrete contact input terminal board for the GE Speedtronic Mark VIe turbine control system. It is the full assembled revision variant of IS200TDBTH2A, designed for 24-channel dry contact signal termination. It provides electrical isolation, surge suppression and noise filtering for field safety interlock signals, and distributes signals to triple redundant PDIO I/O packs. Built for high-reliability turbine protection loops, it is widely used as a spare part for power plant gas turbine and steam turbine control cabinet maintenance and retrofit.

Product Functions

• Collect dry contact signals from E-stop buttons, limit switches, relay auxiliary contacts and field sensors
• Signal conditioning, filtering and isolation to protect downstream TMR I/O packs from EMI interference
• Distribute contact input signals to three independent I/O channels for triple modular redundant judgment
• Support safety trip and interlock logic for critical turbine protection functions
• Terminal block design for easy field wiring, channel inspection and troubleshooting
• Stable operation under harsh industrial electromagnetic environments in power stations

Application Scenarios

• Gas turbine and steam turbine Mark VIe safety control and protection systems
• Power plant generator sets, large fans, compressors and pump interlock cabinets
• Oil & gas and petrochemical heavy rotating machinery control systems
• Critical safety shutdown (ESD) and high-reliability industrial control loops
• Spare replacement and repair of existing GE Speedtronic Mark VIe racks

FAQ