Description
Product Introduction
GE IS200ERIOH1A is the FPGA-based Exciter Regulator I/O board in GE’s EX2100 and Mark VI turbine control systems, providing the critical interface between the excitation controller and field devices such as PT/CT transformers, analog sensors, and relay outputs.iqelectro+1
This mixed I/O module supports both Simplex and Triple Modular Redundant (TMR) architectures, handles gate drive signals via ERDD, interfaces with ground detectors via EROC, and manages redundant relay control through ERRR in high-availability excitation systems.xm-dcs+1
Frequently Asked Questions
Q: Can I hot-swap the IS200ERIOH1A?
A: No. The IS200ERIOH1A is not designed for hot-swap insertion. In Simplex systems, you must fully de-energize the controller before replacement. In Redundant/TMR systems, online replacement is possible only after strictly following the EX2100 maintenance procedure: inhibit excitation, power down the affected section (M1/M2/C), then swap the board and re-energize.
Q: Is the IS200ERIOH1A obsolete? Are there direct replacements?
A: Yes, the base IS200ERIOH1A is effectively obsolete in new production. Direct replacements are the revised versions IS200ERIOH1AAA, ACA, or ACB, which share the same FPGA architecture and EX2100 compatibility. Always verify revision compatibility with your ToolboxST project and firmware level before installing.xydmro+1
Q: Will I lose my excitation control program when replacing this board?
A: No, if you follow procedure. The control logic and parameters reside in the DSPX processors and are managed via ToolboxST. When installing a replacement IS200ERIOH1A, you must download the application code and parameter settings to the DSPX, which then configures the ERIO over the ISBus. Always back up the EX2100 project before hardware changes.xm-dcs+1
Q: Are these units factory-new or refurbished?
A: Most available stock is New Surplus (original GE packaging, never installed) or tested used units with 12-month warranty. Genuine GE factory-new IS200ERIOH1A boards are rare. Request photos of packaging, revision labels (AAA/ACA/ACB), and serial numbers for audit.
