IS200EISBH1A GE EX2100, Exciter ISBus Board

Description:

IS200EISBH1A is an Exciter ISBus Board manufactured and designed by General Electric as part of the EX2100 Series used in GE Excitation Control Systems. The IS200EISB Exciter ISBus Board (EISB) is a special communication board for the M1, M2, and C controllers. It receives and transmits fiber-optic feedback signals and transmits them over the control backplane to the DSPX controller and also communicates between the DSPX and the tool and keypad ports using RS-232C through the backbone connector. In addition, for redundant exciters, EISB contains ISBus interface electronics. ISBus is a GE proprietary communications interface, used here to transfer data among the M1, M2, and C controllers of the exciter. EISB is a single-slot, 3U-high module that is located in the control rack under the DSPX. From fiber-optic connectors on the front panel, it accepts current and voltage signals from the generator field (and from the Exciter if required) using EDCF boards, and receives and transmits signals to the Ground Detection module.

APPLICATION DATA:

The board front panel has six fiber optic connectors for receiving and transmitting variable frequency signals as follows:

Generator Field DC voltage input from the EDCF board
Generator Field DC input from the EDCF board
Exciter Voltage input from EDCF (optional)
Exciter current input for EDCF (optional)
Ground Detector Voltage input
Ground Detector Voltage output

The IS200EISBH1AAA is a printed circuit board created by General Electric as part of their Mark VI gas/steam turbine control system.  The Mark VI is one of several Speedtronic systems designed and released by General Electric from the 1960s onward.  The Mark VI uses 13- or 21-slot VME card racks for control, protection, and monitoring.    The IS200EISBH1AAA is part of the EX2100 Excitation control subset of the Mark VI. 

The IS200EISBH1AAA functions as an Exciter ISBus circuit board.  The board acts as a communication interface circuit card between the M1 and M2/C controllers.   It is designed to provide communication for each DSPX board located in M1, M2 and C.   The IS200EISBH1AAA is a single slotted 3U high board.  The board uses its backplane connectors to receive and transmit feedback signals. 

The IS200EISBH1AAA has a front faceplate with several integrated components.  It is marked top and bottom with the GE logo and with the board id number.   It has an opening to allow users to access a reset switch mounted to the board’s surface.   It also has an opening populated by six fiber-optic connectors.  

The IS200EISBH1AAA has one backplane connector.  Factory-drilled holes have been made in each board corner.   Other components include two transformers, a relay, a transistor, as well as resistors, integrated circuits, and capacitors.  

Datasheet Link:

IS200EISBH1A GE EX2100, Exciter ISBus Board PDF Datasheet