Description
Product Introduction
GE IS200SPROH1ADD is the SPRO backup protection terminal board in GE’s Mark VIe excitation control system, designed to provide independent speed signal conditioning, generator voltage sensing, and a hardwired trip output for the field breaker in case of primary controller failure.plcmasters+1
This board hosts the PPRO I/O pack, interfaces directly with passive magnetic speed pickups for 2-out-of-3 overspeed voting, and drives a heavy-duty dry contact relay to isolate the exciter field—ensuring fail-safe protection even during loss of control power or communications.aptercontrol+1
Frequently Asked Questions
Q: Can I hot-swap the IS200SPROH1ADD?
A: No. The SPRO is a critical protection terminal board; it is not designed for hot-swap insertion. You must de-energize the excitation system or isolate the protection rack before removal to avoid unintended field breaker trips and to protect personnel from high-voltage AC/DC circuits.plcmasters+1
Q: Is the IS200SPROH1ADD obsolete? Are there direct replacements?
A: Yes, the SPRO board is effectively obsolete in new GE production. Direct replacements are other SPRO variants (e.g., IS200SPROH1ABC, IS200SPROH1ABA) or upgraded protection terminal boards in the same Mark VIe family, but verify mechanical envelope, connector pinout, and relay rating before swapping.aptercontrol+1
Q: Will I lose my excitation control program when replacing this board?
A: No. The IS200SPROH1ADD is a terminal board that hosts the PPRO I/O pack; it does not store control logic or parameters. Excitation control programs reside in the primary controllers (e.g., ERIO, DSPX). However, always back up the EX2100e project before any hardware intervention.
