GE IS200ESELH1A Exciter Selector Board

GE IS200ESELH1A Exciter Selector Board

Part Number IS200ESELH1A Manufacturer General Electric Country of Manufacture As Per GE Manufacturing Policy Series EX 2100e Function Module Availability In StockIS200ESELH1A is an Exciter Collector Card and is part of the GE Speedtronic Mark VI gas turbine control systems. It functions as a Power Circuit Board in a turbine management system. This board serves as an Exciter Collector, receiving six logic level gate pulse signals from the EMIO it is connected to. The signals are then distributed to the EGPA exciter gate pulse amplifier boards in the power conversion cabinet. In redundant systems, two ESEL boards are employed, one of which is operated by M1 and the other by M2. The board has a small front panel with three LED lights and is labeled with the board's identification number. The majority of the components include reference designators. The board comprises numerous integrated circuits, over 75 transistors, 95 capacitors, approximately 300 resistors, and a single bridge driver, as well as two backplane connectors.

SPECIFICATIONS:

Part Number: IS200ESELH1A
Manufacturer: General Electric
Series: EX2100
Product Type: Exciter Selector Board
Number of Channels: 13 probes
Probe Power: -24 V dc
Span: -8 mV to +45 mV
Operating temperature: 0 to +45°C
Size: 33.0 cm high x 17.8 cm
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEI-100456

FUNCTIONAL DESCRIPTION:

IS200ESELH1A is an Exciter Selector Board manufactured and designed by General Electric as part of the EX2100 Series used in the GE Excitation Turbine Control System. The IS200ESEL Exciter Selector Board (ESEL) mounts in the control rack and receives six logic level gate pulse signals from its corresponding master I/O (EMIO) board. It then uses the pulse signals to drive six sets of cables which are distributed to the exciter gate pulse amplifier (EGPA) boards. The EGPA boards are mounted in the Power Conversion Cabinet. Three groups of ESEL boards are available to support increasing redundancy levels:

ESELH1 contains a single bridge driver controlling one PCM

ESELH2 contains three bridge drivers controlling three PCMs

ESELH3 contains six bridge drivers controlling six PCMs

BOARD CONTROL:

For simplex systems, only one ESEL is necessary, but if redundancy control or online repair is required, then two ESELs are supplied. Either ESEL 1 or ESEL 2 can be active depending on which controller, M1 or M2, is active as determined by controller C. Refer to the figure below. ESEL 1 is always driven by M1, and ESEL 2 by M2. Controller M1 is the default. The selectors direct six gating commands from either M1 or M2 under the control of C. All power required to command the six EGPAís is supplied by the active master.

APPLICATION DATA:

There are no jumpers or test points on the board. Connectors P1 and P2 connect to the VME backplane and are not defined in this document since these individual pin signals are not normally checked during troubleshooting. The layout of the ESEL board is shown in the following figure. Three green LEDs at the top of the front panel provide status information as follows:

Power is on the board.

The board is active (enabled by the signal from control C).

The board is gating (driven by gate inputs from EMIO).