The GE IS200EMIOH1A, also cataloged as the IS200EMIOH1A exciter main I/O board, serves as the primary EMIO module used to execute PT/CT signal handling, contact input processing, relay‑driver outputs, and gate‑pulse routing across EX2100 excitation control platforms.
Hardware Specifications
Parameter
Specification
Model
IS200EMIOH1A
Brand
General Electric
Origin
United States
Weight
2 lbs
Dimensions
Not specified
Operating Temp
Not specified
Power Consumption
Not specified
Series
EX2100
Product Type
Exciter Main I/O Board
Board Format
Single‑slot, double‑height VME
Backplane Connectors
P1 (control boards), P2 (I/O signals)
Supported I/O
PT, CT, contact inputs, relay drivers, pilot trip drivers
Manual Reference
GEI‑100453
Backplane Bus Communication Velocity Licenses
Within EX2100 excitation systems, the IS200EMIOH1A aligns with deterministic backplane timing. Connector P1 synchronizes EMIO with EPCT, ECTB, EACF, and ESEL boards, maintaining fixed propagation windows for gate‑pulse logic signals routed to EGPA. The board contains no jumpers or configurable hardware, ensuring stable I/O density scaling across simplex and redundant excitation racks. Firmware flash compatibility resides entirely in upstream control boards; EMIO performs passive termination and routing without embedded logic.
Frequently Asked Questions
Q: How many backplane connectors does the EMIO board use? A: Two. P1 handles control‑board communication, and P2 routes I/O signals through EBKP.
Q: Does the board contain any configurable jumpers or fuses? A: No. EMIO is fully fixed‑configuration and relies entirely on backplane wiring.
Q: Can the EMIO board be replaced while the exciter is energized? A: No. The exciter must be de‑energized before removing or inserting the board.
Field Installation Guidelines
Deactivate the exciter and verify all circuits are de‑energized before handling the board.
Loosen faceplate screws only enough to release the ejector tabs; the screws are captive and should not be removed.
Use both hands to withdraw the board evenly from the VME rack to avoid connector strain.
When inserting the replacement board, press the top and bottom of the faceplate simultaneously to begin seating.
Tighten faceplate screws evenly to ensure the board is squarely seated in the slot.
Maintain clean separation between PT/CT wiring and high‑energy conductors to reduce noise coupling.
