The GE IS200ESELH1A, also cataloged as the IS200ESELH1A exciter selector board, serves as the primary ESEL module used to execute logic‑level gate‑pulse routing across EX2100 excitation platforms.
Hardware Specifications
Parameter
Specification
Model
IS200ESELH1A
Brand
General Electric
Origin
United States
Weight
Not specified
Dimensions
33.0 cm high x 17.8 cm
Operating Temp
0 to +45 deg C
Power Consumption
Not specified
Series
EX2100
Product Type
Exciter Selector Board
Channels
13 probe channels
Probe Power
-24 V dc
Span
-8 mV to +45 mV
Backplane Connectors
P1, P2
Manual Reference
GEI‑100456
Backplane Bus Communication Velocity Licenses
As part of the EX2100 excitation system, the IS200ESELH1A aligns with deterministic backplane timing controlled by the active controller (M1 or M2). Gate‑pulse signals from EMIO are routed through ESEL with fixed propagation delay, ensuring synchronous delivery to EGPA boards in the power conversion cabinet. Firmware flash compatibility resides entirely in upstream control modules; ESEL contains no programmable logic or jumper‑selectable hardware. I/O density scaling is achieved through the board’s fixed six‑pulse routing architecture, supporting simplex or redundant selector configurations.
Frequently Asked Questions
Q: How does the ESEL board determine which controller is active? A: Controller C designates whether M1 or M2 is active. ESEL 1 is driven by M1, and ESEL 2 by M2 in redundant systems.
Q: Are there any jumpers or test points on the board? A: No. The board is fully fixed‑configuration and relies on backplane wiring.
Q: Can the board be replaced while energized? A: No. The exciter must be de‑energized before removing or inserting the board.
Field Installation Guidelines
Verify exciter shutdown and absence of energized circuits before handling the board.
Use ejector tabs to remove the module evenly from the VME rack to avoid connector strain.
Insert the replacement board by pressing the top and bottom of the faceplate simultaneously to begin seating.
Tighten faceplate screws evenly to ensure square seating in the rack.
Maintain separation between gate‑pulse cabling and high‑energy conductors to reduce noise coupling.
Confirm proper backplane engagement of P1 and P2 before energizing the system.
