GE IS200EMIOH1ACA Printed Circuit Board

GE IS200EMIOH1ACA Printed Circuit Board

د.إ8,888.00

The IS200EMIOH1ACA serves as the central interface for managing and distributing key control and feedback signals between the main DSPX controller(s) and the terminal boards in the exciter control rack.2

  • Signal Management: It manages various Input/Output signals, including:
    • PT (Potential Transformer) and CT (Current Transformer) signals for voltage and current feedback.3
    • Contact Inputs (digital status signals).4
    • Output Relay Drivers (including 12 relay channels for discrete outputs).5
    • Pilot Trip Relay Drivers for implementing critical protection functions.6
  • Gate Pulse Control: It plays a crucial role in the power section by sending logic-level gate pulse signals over the backplane to the ESEL (Exciter Selection) board, which then forwards them to the EGPA (Exciter Gate Pulse Amplifier) boards in the power conversion cabinet.7 This is essential for firing the Thyristors (SCRs) in the exciter bridge.
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The GE IS200EMIOH1ACA Printed Circuit Board is the Exciter Main I/O (Input/Output) Board used in General Electric’s EX2100 Excitation Control System and the larger Mark VI Speedtronic turbine control platform.1

⚙️ Primary Function (Exciter Main I/O)

The IS200EMIOH1ACA serves as the central interface for managing and distributing key control and feedback signals between the main DSPX controller(s) and the terminal boards in the exciter control rack.2

  • Signal Management: It manages various Input/Output signals, including:
    • PT (Potential Transformer) and CT (Current Transformer) signals for voltage and current feedback.3
    • Contact Inputs (digital status signals).4
    • Output Relay Drivers (including 12 relay channels for discrete outputs).5
    • Pilot Trip Relay Drivers for implementing critical protection functions.6
  • Gate Pulse Control: It plays a crucial role in the power section by sending logic-level gate pulse signals over the backplane to the ESEL (Exciter Selection) board, which then forwards them to the EGPA (Exciter Gate Pulse Amplifier) boards in the power conversion cabinet.7 This is essential for firing the Thyristors (SCRs) in the exciter bridge.
  • Terminal Board Interface: It is the direct interface for several terminal boards, including the EXTB, ECTB, EACF, and EPCT boards, which connect the field wiring to the control system.8

🛠️ Key Specifications

Specification Detail
Name Exciter Main I/O Board (EMIO)
Series EX2100 Excitation Control System / Mark VI
Form Factor Single-slot, double-height VME style board
I/O Capacity 12 Relay Channels
Indicators Two LEDs on the front faceplate for Power and Status
Component Density Populated with hundreds of resistors, capacitors, and nearly 80 Integrated Circuits (ICs).
Redundancy In a redundant (TMR) EX2100 system, this board can be hot-swapped (replaced while the exciter is running).

The IS200EMIOH1ACA is fundamental to the EX2100’s ability to precisely regulate generator voltage and current, as it processes and directs the low-level signals that ultimately control the high-power excitation bridge.

You might be interested in a brief explanation of how Printed Circuit Boards (PCBs) are made.

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