The GE IS200ESELH1AAA, also cataloged as the IS200ESEL Exciter Selector Board, operates as a dedicated hardware component for processing pulse driver signals and managing transducer inputs within EX2100 platforms. It receives six logic-level gate pulse signals directly from the Master I/O (EMIO) board, conditions the waveforms, and drives signal streams across dedicated cabling to the Exciter Gate Pulse Amplifier (EGPA) boards.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS200ESELH1AAA |
| Brand | General Electric |
| Dimensions | 26.04 cm H x 1.99 cm W x 18.73 cm D |
| Operating Temp | Standard Industrial Temperature Limits |
| Power Consumption | Rack Backplane Powered |
| Keyphasor Inputs | 2 channels (0.5 to 20 VDC input range) |
| Pyrometer Inputs | Current loop (4-20 mA) |
| Max Lead Resistance | 15 ohm |
| Series | EX2100 |
Gate Pulse Conditioning and System Determinism
The IS200ESELH1AAA manages gate pulse processing and interface routing with low signal propagation delay across the EX2100 control rack bus. Onboard circuit paths process incoming pulse streams to preserve signal integrity and deterministic timing before driving output cable arrays to EGPA power stacks. Compatibility with the local backplane bus communication velocity ensures synchronicity between control loop calculations and gate trigger execution.
Frequently Asked Questions
Q: What are the input electrical specifications for Keyphasor probe channels on this board?
A: The board accepts up to two Keyphasor probe inputs configured for a voltage signal window ranging from 0.5 VDC to 20 VDC.
Q: What is the maximum allowable cable loop resistance for sensor wiring attached to this card?
A: Field transducer wiring connected to the board must maintain a total maximum lead resistance not exceeding 15 ohm.
Field Installation Guidelines
Insert the board into its dedicated slot within the EX2100 control rack, ensuring full backplane connector engagement before tightening top and bottom retention fasteners. Route all gate pulse distribution cables away from high-current power buses to prevent electromagnetic interference. Shielded twisted-pair conductors used for 4-20 mA pyrometer inputs and Keyphasor probe lines must have their shields terminated to cabinet earth ground at a single grounding point. Always confirm system power isolation prior to removing or installing the board.
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