The IS200VATFG1A is a Mark VI PCB component. The Mark VI is one of several systems GE released under the “Speedtronic” name, specifically for the management of gas and steam turbines. This line began with the release of the Mark I in the late 1960s and has continued to develop and change with newer, faster technology with the MKII, MKIV, MKV, and now the Mark VI and Mark VIe. The Mark VI offers integrated protection, monitoring, and control with a central Control Module that can be designed in Simplex or Triple Redundant form. Simplex form supports small applications with a single module, while Triple Redundant form is better used for large integrated systems with many distributed modules.
The IS200VATFG1A is a Voltage Attenuator Feedback Board. This board provides a weakening of ac or dc bridge voltages from Innovation Series drives. Attenuation is achieved through series-connected precision resistors located in two identical strings on the board. These strings of resistors have stab-on connectors located along the string to allow for a range of voltage inputs. The stab-on connectors allow the user to connect one, two, three, or five resistors at any time.
The IS200VATFG1A has two plug connectors. These are labeled J1 and J2, and allow for High-frequency power supply input and return. The board has two fiber-optic transmitter connectors (V21/V31.) It also has one LED indicator, five TP test points, and eight stab-on connectors. Test points are for factory or bench testing only. The board is built with several integrated circuits, capacitors made of electrolytic and ceramic material, as well as polyester vinyl capacitors, and resistors that vary from metal film to the 1.245 MΩ resistors in series. The board has one resistor network array.
GE provided technical support for the IS200VATFG1A board. As this is a high voltage board, it is important to follow all manufacturer warnings and recommendations during maintenance and replacement. Please refer to publications (manuals/user guides) for more information.