Description
Technical Specifications
| Specification | Details |
|---|---|
| Brand | GE / General Electric |
| Part Number | DS200FGPAG1AHD |
| Board Family | DS200FGPA |
| Series | LS2100 |
| Product Type | Gate Pulse Amplifier Board |
| Primary Function | SCR gate drive, SCR status monitoring, switching power supply |
| Application | LCI / Load Commutated Inverter systems |
| Associated Platform | GE LS2100; legacy Mark V-related drive/control equipment |
| Gate Driver Circuits | 2 |
| Fiber-Optic Connectors | 15 total: 1 transmitter and 14 receivers |
| Test Points | 30 total: 9 Gate A, 9 Gate B, 12 cell-status monitoring |
| Converter Supply Voltage | 2080 VAC or 3300 VAC, according to the applicable LCI configuration |
| FGPA Power Input | 120 VRMS ±20%, 50/60 Hz |
| Maximum Input Power | Approximately 350 VA |
| Board-Level Low-Voltage Test Points | P15: typically 13.5–14.5 VDC; P5: 4.7–5.1 VDC; P90: ≥81 VDC; P40: ≥25 VDC |
| Mounting | Internal drive/control cabinet PCB |
| Firmware | No standalone firmware identified; hardware uses control circuitry and optical interfaces |
| Approx. Board Size | Approximately 6.25 × 5 in (158.8 × 127 mm), based on a part-specific secondary reference |
| Weight | Verify for the exact G1AHD assembly |
| Lifecycle | Legacy / discontinued |
| Manual Reference | GEI-100223 |
The core technical specifications are supported by the DS200FGPAG1A documentation and current part-family references.
GE DS200FGPAG1AHD
Product Overview
The DS200FGPAG1AHD is a specialized power-electronics control board rather than a general-purpose PLC or conventional I/O card. It is associated with GE LS2100 LCI systems, where it provides the gate-drive and monitoring interface required for SCR bridge operation.
Its three principal functions are:
Gate driver: provides the gate power and firing pulses required to control the SCRs for one phase of the SCR bridge.
SCR status monitoring: receives cell-voltage/status information and transfers the monitored information through the board’s optical communication circuitry.
Switching power supply: converts the incoming AC supply into the DC voltages required by the board’s gate-drive and monitoring circuits.
Fiber-Optic Interface
A particularly important feature of the FGPA board is its 15 fiber-optic interfaces. The documented arrangement includes one optical transmitter and fourteen optical receivers. These links are used for SCR-cell status information and control-system communication, providing electrical isolation between the control electronics and high-power SCR circuitry.
During replacement, the optical connections should be carefully documented because incorrect routing or contamination of the optical connectors can prevent proper SCR status communication.
Power Supply
The FGPA board accepts a documented 120 VRMS input with ±20% tolerance at 50/60 Hz, with approximately 350 VA maximum input power. The board then generates the internal DC supplies used by its control, monitoring, and gate-driver circuitry.
The underlying LCI system can use a 2080 VAC or 3300 VAC twelve-pulse converter supply, depending on the installed drive configuration. This high-voltage figure refers to the associated converter system, not to a direct input connection to the FGPA board itself.
Board Revision and Identification
The base board family is commonly identified as DS200FGPAG1A, with several published revisions including:
| Published Variant | Board Family |
|---|---|
| DS200FGPAG1AMD | FGPA |
| DS200FGPAG1AKD | FGPA |
| DS200FGPAG1AHD | FGPA |
| DS200FGPAG1AFC | FGPA |
These revisions are documented as different hardware versions, so the full suffix should be retained when sourcing a replacement.
Replacement Considerations
For procurement of DS200FGPAG1AHD, verify the complete part number against the installed board.
| Verification Item | Importance |
|---|---|
| DS200FGPAG1AHD | Confirms the exact hardware variant |
| Board revision / artwork | Prevents revision mismatch |
| LS2100 / LCI configuration | Confirms intended application |
| Fiber-optic connector routing | Required for correct SCR status communication |
| Gate A / Gate B wiring | Important for proper firing operation |
| Input supply | Confirms the 120 VRMS board supply |
| DIP switches / jumpers | Verify against the original board where applicable |
| Adjacent FHVA / SCR hardware | Confirms system compatibility |
| Existing configuration and test readings | Useful for commissioning after replacement |
The exact G1AHD suffix should not be replaced merely on the assumption that every DS200FGPAG1A revision is plug-compatible. The available technical references specifically identify multiple revisions and advise compatibility verification.
Lifecycle Considerations
The belongs to the legacy GE LS2100 / Mark V-era hardware portfolio. Current specialist suppliers continue to list the exact board, but it is primarily a legacy replacement item rather than current-generation GE drive hardware.
For critical LCI installations, keeping an exact spare can reduce outage exposure caused by the declining availability of particular FGPA revisions.
Important Identification Note
One third-party page describes as an “inverter snubber board.” That description conflicts with the stronger part-family evidence identifying as a revision of the DS200FGPA Gate Pulse Amplifier Board. The latter classification is supported by the DS200FGPAG1A technical reference, which explicitly lists AHD among the common DS200FGPAG1A revisions and identifies the board as an FGPA/Gate Pulse Amplifier.
FAQ
It is a GE FGPA Gate Pulse Amplifier Board used in LCI equipment.
What does FGPA stand for?
FGPA refers to the Gate Pulse Amplifier board function.
What are its main functions?
The board provides SCR gate driving, SCR status monitoring, and switching power-supply functions.
How many fiber-optic connectors does it have?
The documented DS200FGPA configuration has 15 fiber-optic connectors: one transmitter and fourteen receivers.
What is the FGPA input power requirement?
The documented board input is 120 VRMS ±20% at 50/60 Hz, with approximately 350 VA maximum.
No. It is a specialized LCI gate-drive and SCR-monitoring PCB.
Is the same as ?
It is a specific AHD revision/variant within the family. The complete suffix should be matched when replacing the installed board.
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