IS200GDDDG1ABA

About the IS200GDDDG1ABA

The IS200GDDDG1ABA is a PCB component for the Mark VI series from GE. Mark VI was the third generation of steam/gas turbine management systems from GE that ran with Triple Module Redundant architecture. This meant the system was built with three separate, complete power supplies, control modules, and IONets. This triple-redundant system helped improve the reliability of the system. The IS200GDDDG1ABA is a large PCB that is component-dense. It includes the following:

• Six resistor networks
• Two trim potentiometers marked “RV1” and “RV2”
• Three jumper switches marked JP1 through JP3 
• Eight test points marked TP1 through TP8
• Two male PCB mating connectors - a twenty pin connector and a forty pin connector
• Eight header connectors
• One voltage regulator
• Three green LEDs marked DS100 “Bridge OK (No Bridge Fault,)” DS101 “IMOK,” and DS102 “DD AUX Power Available”  
• Eight transistors
• Three large components marked as diodes (D75/D50/D34)  labeled with the information 156DC005 770097-9 70-0087 1200
• Over thirty integrated circuits

Some integrated circuits are mounted vertically.  Several are mounted to the board over long oval cut-outs in the board’s surface. The voltage regulator is an integrated circuit that provides a constant fixed output voltage regardless of the change in load or input voltage.TP1 is also marked V Out Analog. TP2 is also marked I Out Analog.  TP3 is also marked DC Link Analog. TP4 is also marked DCOM.The IS200GDDDG1ABA is populated with ceramic, aluminum electrolytic and polyester vinyl capacitors. Resistors tend to be made of metal film. Please refer to manuals or data sheets from the original manufacturer for safety data and installation instructions.