Description
🔹 Product Description
The GE IS200EACFG1B, also identified as IS200EACFG1BAA, is an Exciter AC Feedback (EACF) circuit board designed for the GE EX2100 Excitation Control system within the Mark VI platform. The board measures exciter power potential transformer (PPT) AC voltage and current feedback and conditions these signals for the excitation control system. The EACF board uses transformer-based three-phase voltage measurement and supports two flux/air-core current transformer inputs. Its processed feedback signals are distributed through three DB9 connectors for connection to the M1, M2, and C controllers.
The G1 version is intended for exciter AC voltage inputs up to 480 V RMS at 50/60 Hz. The board includes voltage test points for phase-to-phase measurements and connects with the EX2100 exciter backplane/control architecture. The IS200EACFG1BAA designation represents the detailed assembly/revision identification associated with the IS200EACFG1B board.
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Model | IS200EACFG1B / IS200EACFG1BAA |
| Series | Mark VI / EX2100 Excitation Control |
| Product Name | Exciter AC Feedback Board |
| Functional Acronym | EACF |
| Board Type | Printed Circuit Board / Feedback Interface |
| Voltage Measurement | Up to 480 V RMS, 50/60 Hz |
| Connections | 3 × DB9 signal connectors; field input terminals |
| Place of Manufacture | USA |
| Product Status | New |
| Original Country | USA |
| Power | Signal-conditioning / measurement board; powered through system interface |
| Discontinued | Legacy / Mark VI-era component |
⚙️ Main Functions
• Measures three-phase exciter PPT AC voltage feedback
• Processes exciter AC current feedback signals
• Provides interfaces for two flux/air-core CT inputs
• Sends conditioned feedback signals to M1, M2, and C controllers
• Provides test points for phase-to-phase voltage verification
• Designed for integration with the EX2100 excitation control architecture
• Interfaces with the EX2100 EBKP backplane assembly
❓ Q&A
Q: What is the IS200EACFG1B used for?
A: It is an Exciter AC Feedback board used to measure and condition AC voltage and current feedback within the GE EX2100 excitation control system.
Q: What does the G1 designation indicate?
A: The EACFG1 version is designed for exciter AC voltage inputs up to 480 V RMS at 50/60 Hz.
Q: What is the difference between IS200EACFG1B and IS200EACFG1BAA?
A: IS200EACFG1B identifies the base board, while IS200EACFG1BAA provides the more detailed assembly/revision identification used for the complete board configuration.
Q: How does the board communicate with the controllers?
A: Feedback signals are distributed through three DB9 connectors associated with the M1, M2, and C controller connections.
Q: What should be checked before installation?
A: Verify the complete part number, hardware/revision designation, connector configuration, system voltage range, and existing EX2100 configuration before replacement.
⭐ Recommended GE Models
- IS200EBKPG1B | EX2100 Exciter Backplane Board
- IS200ECTBG1A | EX2100 Exciter Contact Terminal Board
- IS200EDCFG1B | EX2100 Exciter DC Feedback Board
- IS200EDEXG1B | EX2100 Exciter De-Excitation Board
- IS200EGDMH1A | EX2100 Ground Detection Board
- IS200EGPAG1B | EX2100 Gate Pulse Amplifier Board
- IS200EHPAG1C | High-Voltage Pulse Amplifier Board
- IS200EISBH1A | EX2100 Exciter In-Synch Bus Board
- IS200EMCSG1A | EX2100 Conduction Sensor Board
- IS200EMIOH1A | EX2100 Main I/O Board
- IS200EPCTG1A | EX2100 Exciter EPCT Board
- IS200EPDMG1B | EX2100 Exciter Power Distribution Module
- IS200ESYSH1A | EX2100 Exciter System Interface Board
- IS200EHPAG1D | High-Voltage Pulse Amplifier Board
- IS200EACFG2A | EX2100 Exciter AC Feedback Board



