The GE IS200EXHSG3AEC, also cataloged as the IS200EXHSG3AEC relay driver board, serves as the primary relay‑drive hardware used to execute high‑speed contactor and pilot‑relay actuation across EX2100 excitation control platforms.
Hardware Specifications
Parameter
Specification
Model
IS200EXHSG3AEC
Brand
GE
Origin
USA
Weight
Not specified
Dimensions
8.26 cm high x 4.19 cm wide x 12.1 cm deep
Operating Temp
Not specified
Power Consumption
Not specified
Relay Channels
12
Coil Supply
125 VDC nominal (100–140 VDC allowable)
Contact Supply
24 VDC nominal
Relay Break Rating
2 A resistive @ 28 VDC; 1 A inductive @ 28 VDC (0.007 s L/R)
Technology
Surface‑mount
Series
EX2100
Function
High‑speed relay driver for excitation control
Backplane Bus Communication Velocity Behavior
As part of the GE EX2100 control architecture, the board interfaces with EMIO modules through three 25‑pin connectors (J505, J508, J515). These connectors maintain deterministic signal propagation across M1, M2, and C control paths. Trace routing and connector pinout symmetry help stabilize backplane communication velocity, ensuring consistent timing for de‑excitation, crowbar status, and contactor‑drive signals.
Frequently Asked Questions
Q: Can the IS200EXHSG3AEC be replaced while the excitation system is energized? A: No. Relay‑drive hardware must be replaced only when the cabinet is de‑energized to prevent unintended contactor actuation.
Q: Does the board introduce significant load on the excitation backplane? A: The board’s static load is minimal. Relay coil power is sourced externally, so cabinet power budgeting must consider coil current rather than backplane draw.
Q: Is firmware involved in EXHS board operation? A: The board contains no upgradeable firmware. Hardware compatibility is validated through connector mapping and EMIO signal expectations.
Field Installation Guidelines
Maintain proper suppression hardware externally, as the board provides no internal coil suppression.
Route relay‑drive wiring separately from high‑energy crowbar or SCR cabling to minimize induced transients.
Verify correct seating of J505, J508, and J515 to ensure deterministic EMIO signal routing.
Confirm coil‑supply voltage remains within the 100–140 VDC range before energizing the system.
Ensure auxiliary wetting voltage (70 VDC) from J12M1 and J12M2 is correctly applied for contact‑status circuits.
