GE IS200TBCIH2CAA Mark VI Terminal Board Controller (TBC) Module

GE IS200TBCIH2CAA is a Terminal Board Controller (TBC) module for GE Mark VI / Mark VIe turbine control system. It acts as the signal termination and interface unit between field discrete input devices and Mark VI I/O packs, collecting dry contact digital signals and transmitting data to the main turbine controller via UDH bus.

This board features 24 dry contact input channels separated into two isolated groups, built-in hardware filter and surge protection circuit. It adopts conformal coating design, widely used as spare parts for gas turbine, steam turbine and combined cycle power plant control cabinet maintenance and renovation projects.

Main Specifications

1. Brand: GE; Model: IS200TBCIH2CAA; Series: Mark VI / Mark VIe; Type: TBC Terminal Board Controller
2. Input Channels: 24 dry contact discrete inputs, divided into 2 isolated groups of 12 channels
3. Excitation Voltage: 24VDC; Hardware filter: 4ms; Built-in surge protection
4. Communication: UDH (Unit Data Highway); Connector: 37-pin D-type connector for I/O pack connection
5. Mounting: Panel or DIN rail mounting with sheet metal carrier; Conformal coated PCB
6. Operating Temperature: -40℃ ~ +70℃; Industrial anti-vibration and anti-interference design
7. Supply Status: Industrial spare terminal board for turbine control system overhaul and emergency replacement

Core Functions

1. Receive dry contact discrete signals from field switches, relays and safety interlock devices in turbine units.
2. Signal conditioning and filtering to suppress electrical surge and noise interference from field wiring.
3. Transmit collected digital status data to Mark VI I/O pack and main controller through UDH bus.
4. Isolated channel design reduces cross-talk and improves stability in power plant cabinet environment.
5. On-board circuit monitoring, feed back terminal board operating status and fault alarm to control system.
6. Standard terminal layout, convenient field wiring and fast board replacement during maintenance work.

Application Scenarios

1. Digital signal termination and acquisition unit for GE Mark VI / Mark VIe gas and steam turbine control systems.
2. Fault terminal board replacement and routine maintenance of existing GE turbine control platforms.
3. Combined cycle power station, thermal power plant turbine safety interlock and unit status monitoring projects.
4. Emergency replacement for TBC board failure to restore field discrete signal collection function.
5. Spare parts stocking for maintenance teams supporting GE Mark VI turbine automation control systems.
6. Aftermarket spare supply for turbine control cabinet upgrade and power plant control system reconstruction.

FAQ

1. Q: What system is GE IS200TBCIH2CAA designed for?
   A: It is a TBC terminal board controller for GE Mark VI / Mark VIe turbine control system, used for dry contact discrete signal acquisition.
2. Q: What are typical module failure symptoms?
   A: No digital signal reading, partial channel failure, UDH communication loss, board fault alarm.
3. Q: How to complete commissioning and diagnosis?
   A: Install the board, connect field dry contact signals and 37-pin cable, verify channel status and UDH communication with turbine control software.