IS200TBCIH1BCE
IS200TBCIH1BCE
IS200SDCCG5AHD

IS200EISBH1AAB Circuit board GE

IS200EISBH1A is an Exciter ISBus Board and is part of the GE EX2100. The Exciter ISBus Board (EISB) is a unique communication board for the M1, M2, and C controllers. It receives and transmits fiber-optic feedback signals to the DSPX controller via the control backplane, and it also communicates between the DSPX and the tool and keypad ports via the backbone connector using RS-232C. EISB also includes ISBus interface electronics for redundant exciters.

IS200EISBH1A Functional Description

  • ISBus is a GE proprietary communications interface that is used here to transfer data between the exciter’s M1, M2, and C controllers. EISB is a single-slot, 3U high module found in the control rack beneath the DSPX.

  • It accepts current and voltage signals from the generator field (and the Exciter if necessary) via fiber-optic connectors on the front panel, and receives and transmits signals to the Ground Detection module.

Application Data

EISB has no LED indicators, jumpers, or fuses.

Connectors

The following fiber optic connectors are located on the board’s front panel for receiving and transmitting variable frequency signals:

  • EDCF board generator field dc voltage input

  • dc Generator Field The EDCF board’s current input

  • EDCF Exciter Voltage input (optional)

  • EDCF exciter current input (optional)

  • Voltage input for Ground Detector

  • Voltage output from the Ground Detector A reset switch is also recessed behind a hole in the lower part of the front panel.

Optical Connectors

On the front panel, there are two groups of four optical receive receptacles. In the lower section, there is a two-piece group consisting of one optical receiver and one transmitter.

Keypad and Tool

For communication with the keypad, EISB has an RS-232C driver. It provides the power source with +24 V dc and 24 V dc return from the backplane. EISB also includes an RS-232C driver for communicating with a computer via the tool port. The data rates range between 1200 and 38.4 KBaud.

IS200EISBH1A Board Replacement

To replace a board in a control rack while it is offline

  1. Ensure that the exciter has been deactivated;

  2. Open the control cabinet door and ensure that the power indicators on the EPDM and EPSM power supplies, as well as the controller’s LEDs, are turned off.

  3. Disconnect the fiber-optic cables from the EISB board’s front. Make sure they are labeled correctly for reassembly.

  4. Carefully remove the DSPX board and its attached EISB board from the control rack, as shown below:

    1. Loosen the screws near the ejector tabs at the top of the DSPX faceplate and the bottom of the EISB faceplate. (The screws in the faceplate are captive and should not be removed.)

    2. Remove the DSPX and EISB by pulling up on the ejector tabs.

    3. Gently pull both boards from the rack with both hands.

  5. Remove the DSPX from the top of the EISB and replace it with the new EISB board.

  6. Place the replacement DSPX and EISB boards in the appropriate rack slot.

  7. Begin seating the boards by firmly pressing the top and bottom faceplates with your thumbs at the same time.

  8. Finish seating the boards in the slot by tightening the screws at the top and bottom of the faceplate assembly alternately. Screws should be tightened evenly to ensure that the boards are seated squarely.

  9. Reconnect all communication cables that were removed from the old module.

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Description

Product Description
The IS200EISBH1AAB circuit board fits into the Mark VI Speedtronic system. This is a gas/steam turbine management series that was created and originally distributed by General Electric. Speedtronic systems have been in use since the late 1960s in various iterations. The Mark VI includes Ethernet capabilities and can be built as either a Simplex or TMR (triple modular redundant) system to meet the size and complexity of the associated turbine system.

The IS200EISBH1AAB is an Exciter ISBus board that is typically used within EX2100 excitation control. This type of control uses 21- or 13-slot VME card racks control modules. The control module is designed to communicate with the Mark VI PC-based HMI, which allows the user to access data (analog and digital) in a single location, including high-resolution time tags for alarms/events.

The IS200EISBH1AAB is used to manage all fiber-optic communications within the cabinet. It uses fiber-optic feedback signals (inputs and outputs) that are transmitted through its backplane connector. The board also accepts voltage and current signals via six fiber-optic connectors that are on its front faceplate. These connectors are labeled “Gen Field,” “Exciter,” (both for voltage and current,) and “Gnd Detect.” The front faceplate is marked with the board id number and the GE Logo. It has openings to allow access to a reset switch located on the board.

IS200EISBH1AAB

IS200EISBH1AAB

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