Product Description

The IS200TBAIH2C is a board component manufactured by GE for the Mark VI system.  The Mark VI, which was one of the last Speedtronic offerings, is a gas/steam turbine management system that features TMR (triple modular redundant) architecture.  The system is designed with completely independent control modules, IONets, and power supplies.

The IS200TBAIH2C is an Analog Input/Output terminal board.  The PCB supports ten analog inputs and two analog outputs. Analog outputs can be set up for 0-20 mA or 0-200 mA current.  

The IS200TBAIH2C is built with three DC-37 pin cable connectors.  These are labeled JR1, JS1, and JT1. In TMR applications, input signals fan to the three connectors for the R/S/T controls.  Outputs are combined with the total current determined by a measuring shunt. Simplex applications only use the JR1 connector for inputs  

The IS200TBAIH2C is built with two terminal blocks (TB1 and TB2.) These are located side-by-side along one board edge.  The terminal blocks are barrier-type blocks that can be unplugged from the board for maintenance. The board is installed with a shield bar attached to the left of these components. There are transistors, resistors, integrated circuits, capacitors, and jumper switches on the board surface. Jumpers are used to determine the type of current input and output.

Each cable that connects to the IS200TBAIH2C has its own ID device that can be interrogated by the I/O controller.  A mismatch in this read-only chip will cause a hardware incompatibility fault. The board will also produce a diagnostic alarm fault if there is a voltage drop of output current across either of the two board outputs.