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The General Electric IS200ERIOH1A is an Exciter Regulator I/O board designed for the EX2100 Excitation Regulator and the Mark VI series control systems. This printed circuit board provides the primary interface for system I/O and customer I/O signals, operating in both simplex and redundant regulator control configurations.
For simplex configurations, the IS200ERIOH1A mounts directly in the ERBP (Exciter Regulator Backplane) and interfaces customer I/O signals through the ECTBG2 and EPCT terminal boards. It also interfaces system I/O signals for the EROC (Exciter Regulator Options Card) and ERDD (Exciter Regulator Interface and Dynamic Discharge). In redundant systems, the card mounts in the ERRB backplane and additionally interfaces system I/O signals for the ERRR (Exciter Regulator Redundant Relay). Data acquisition and storage into Dual Port Memory (DPM) are managed on-board by an integrated Field Programmable Gate Array (FPGA).
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric (GE) |
| Model Number | IS200ERIOH1A |
| Product Type | Exciter Regulator I/O Board |
| System Compatibility | EX2100 Excitation Regulator / Mark VI Series |
| Applications | Simplex and Redundant |
| Manufacturing Location | Salem, VA, USA |
| Backplane Compatibility | ERBP (Simplex) / ERRB (Redundant) |
| On-Board Control | Field Programmable Gate Array (FPGA) |
| On-Board Memory | Dual Port Memory (DPM) |
| Interface / Connector | Function |
|---|---|
| Dual 25-Pin Connectors | Interfaces with EPCT and ECTB terminal boards via ERBP/ERRB backplane |
| ERBP Backplane Interface | Simplex connection to EROC and ERDD system boards |
| ERRB Backplane Interface | Redundant connection to EROC, ERDD, and ERRR system boards |
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Returns & Warranty



The General Electric IS200ERIOH1A is an Exciter Regulator I/O board designed for the EX2100 Excitation Regulator and the Mark VI series control systems. This printed circuit board provides the primary interface for system I/O and customer I/O signals, operating in both simplex and redundant regulator control configurations.
For simplex configurations, the IS200ERIOH1A mounts directly in the ERBP (Exciter Regulator Backplane) and interfaces customer I/O signals through the ECTBG2 and EPCT terminal boards. It also interfaces system I/O signals for the EROC (Exciter Regulator Options Card) and ERDD (Exciter Regulator Interface and Dynamic Discharge). In redundant systems, the card mounts in the ERRB backplane and additionally interfaces system I/O signals for the ERRR (Exciter Regulator Redundant Relay). Data acquisition and storage into Dual Port Memory (DPM) are managed on-board by an integrated Field Programmable Gate Array (FPGA).
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric (GE) |
| Model Number | IS200ERIOH1A |
| Product Type | Exciter Regulator I/O Board |
| System Compatibility | EX2100 Excitation Regulator / Mark VI Series |
| Applications | Simplex and Redundant |
| Manufacturing Location | Salem, VA, USA |
| Backplane Compatibility | ERBP (Simplex) / ERRB (Redundant) |
| On-Board Control | Field Programmable Gate Array (FPGA) |
| On-Board Memory | Dual Port Memory (DPM) |
| Interface / Connector | Function |
|---|---|
| Dual 25-Pin Connectors | Interfaces with EPCT and ECTB terminal boards via ERBP/ERRB backplane |
| ERBP Backplane Interface | Simplex connection to EROC and ERDD system boards |
| ERRB Backplane Interface | Redundant connection to EROC, ERDD, and ERRR system boards |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|