GE IS200EXHSG3A EX2100 High-Speed Relay Driver Board

The GE IS200EXHSG3A, also cataloged as the IS200EXHS High-Speed Relay Driver Board, operates as a dedicated hardware component for driving DC contactors and pilot relays within EX2100 Excitation Control networks.

Hardware Specifications

Backplane Bus Communication Velocity and Firmware Compatibility

• Transmitting status bit matrices directly to Exciter Main Input/Output (EMIO) cards across the EBKP backplane, the board maintains high-speed signal distribution under both simplex and triple modular redundant (TMR) control topologies. Logic interfaces process feedback signals from contactors 41, 53A, and 53B to provide real-time operational state tracking.
• Firmware coordination across the EX2100 control platform verifies driver circuit responses for de-excitation (KDEP) and field flashing pilot relays (K53A, K53B). Integrated conditioning circuitry processes crowbar and de-excitation status lines coming from the EDEX board before delivering deterministic feedback vectors to the primary controller.

Frequently Asked Questions

Q: How are cable interconnections allocated across redundant EMIO control channels on this driver board?

A: Connector J505 links to the M1 controller, J508 connects to M2, and J515 routes to C. Signal topologies across these 25-pin interfaces match, with the exception that connector J515 omits de-excitation and crowbar status lines.

Q: What power source energizes the auxiliary contact wetting feedback paths on the board?

A: Contact wetting is powered by a 70 VDC supply routed through plugs J12M1 and J12M2 directly from the M1 and M2 exciter power supplies.

Field Installation Guidelines

• Verify that the primary excitation system is completely deactivated and that all electrical I/O circuits inside the control cabinet are de-energized before touching hardware components.
• Label every interface cable with its corresponding connector designation (J505, J508, J515, J12M1, J12M2) prior to removal to ensure accurate reconnection.
• Unscrew the board fasteners, remove the existing module, and confirm that the replacement unit matches the required group variant before seating it onto the mounting enclosure.
• Tighten all mounting screws securely to establish proper mechanical bonding and ensure all multi-pin cable harnesses are fully latched at both ends before closing the panel doors.