The GE IS200EPDMG1B, also cataloged as the IS200EPDMG1B power‑distribution board, serves as the primary distribution interface for 125 V dc excitation power within EX2100 systems. It filters incoming AC/DC sources, routes fused outputs to exciter control, I/O, and protection boards, and provides center‑grounded P125V/R125V rails for EPBP‑mounted modules.
Hardware Specifications
Parameter
Specification
Model
IS200EPDMG1B
Brand
GE
Origin
United States
Weight
Not specified
Dimensions
33.0 cm × 17.8 cm
Operating Temp
-30 to 65 deg C
Power Consumption
Not specified
Core Performance Indicators
120 V ac inputs (via DACA converters); 125 V dc distribution; P125V/R125V center‑grounded rails; TB1 terminal block; 14 fuses; 7 switches; 8 green LEDs; 24‑point terminal block; 10 plug connectors; grounded mounting holes; adjustable jumper BJS
Backplane Bus Communication Velocity Licenses
Within EX2100 excitation architectures, the EPDM module aligns with deterministic backplane timing required for synchronous power‑rail availability. Although the board itself contains no programmable logic, its fused outputs and diode‑combined P125V/R125V rails maintain stable propagation intervals for EGPA, EXTB, and EPSM modules. I/O density scaling is achieved through fixed connector groupings, while firmware flash compatibility resides entirely at the controller level.
Frequently Asked Questions
Q: Can the IS200EPDMG1B be replaced while energized? A: No. The exciter must be fully de‑energized before removal to avoid transient loading on the 125 V dc rails and fused outputs.
Q: How is supply‑power availability indicated? A: Eight green LEDs provide visual confirmation of active power‑distribution paths.
Q: Does the adjustable jumper BJS affect grounding? A: Yes. BJS isolates the ground reference on systems using external grounding schemes.
Field Installation Guidelines
Verify exciter de‑energization before handling any connectors or fuses.
Maintain separation between AC‑input wiring and 125 V dc distribution lines to reduce noise coupling.
Ensure TB1 terminal block connections are tightened uniformly to avoid intermittent supply paths.
Bond chassis‑ground mounting holes to cabinet ground for proper safety grounding.
Label all connectors prior to removal to ensure deterministic reconnection during replacement.
