GE IS200EDEXG1AFA – Exciter De-Excitation Control Board | Mark VI EX2100 Series
Engineering Background: The IS200EDEXG1AFA is a critical control board within GE’s EX2100 digital excitation system, designed to manage the de-excitation sequence of synchronous generators in power generation and heavy industrial environments. It operates as part of the Mark VI turbine control platform, providing deterministic, high-reliability field current suppression during generator trip or controlled shutdown events.
Product Positioning: Engineered for procurement engineers and plant maintenance teams requiring a verified, drop-in replacement for GE EX2100 excitation systems. Konmask.com supplies this board with full traceability, functional testing documentation, and cross-reference support for legacy and current Mark VI installations.
Complete Technical Specifications
- Part Number: IS200EDEXG1AFA
- Manufacturer: GE (General Electric)
- Series / Platform: Mark VI / EX2100 Excitation System
- Board Function: Exciter De-Excitation Control
- Form Factor: PCB Module (rack-mount compatible)
- Operating Voltage: Per EX2100 system specification (24 VDC logic bus)
- Communication Interface: Integrated with Mark VI IONET / IONet Ethernet backbone
- Operating Temperature: 0°C to +60°C (standard industrial range)
- Weight: Approx. 250 g
- Compliance: CE, UL (per GE OEM certification)
- Condition: New / Refurbished-Tested (specify at inquiry)
Proven Application Environments
- Gas turbine generator excitation control (GE Frame 5, 6, 7, 9 series)
- Steam turbine generator plants with EX2100 excitation systems
- Hydroelectric power stations using Mark VI control architecture
- Combined-cycle power plants (CCPP) with GE DCS integration
- Industrial co-generation facilities requiring IEEE 421.5-compliant excitation
Engineering Advantages
- Deterministic De-Excitation: Ensures controlled field current decay within IEEE 421.5 and IEC 60034-16 standards, preventing generator overvoltage during trip events.
- Seamless Mark VI Integration: Plug-compatible with existing IS200 series I/O racks — no firmware re-flashing required for direct replacement.
- High MTBF Design: GE’s industrial-grade PCB construction with conformal coating for humidity and vibration resistance.
- Diagnostic Transparency: Onboard LED status indicators and Mark VI Toolbox-readable fault codes for rapid commissioning and fault isolation.
System Architecture & Signal Flow
Within the EX2100 excitation system, the IS200EDEXG1AFA interfaces between the excitation regulator (AVR) and the field discharge circuit. On a generator trip signal received via the Mark VI IONET, the board activates the de-excitation contactor sequence, routing field energy through the discharge resistor network. The board monitors field current decay via analog feedback and reports status to the Mark VI HMI. This closed-loop architecture ensures repeatable, auditable de-excitation performance across all operating scenarios.
Sourcing & Quality Verification
- Source: Authorized surplus and OEM-channel procurement
- Testing: Each unit undergoes functional bench testing against GE IS200EDEXG1AFA OEM test procedures
- Documentation: Certificate of conformance, test report, and shipping manifest available on request
- Warranty: 12-month operational warranty (terms available at checkout)
- Anti-Counterfeit: Physical inspection of PCB markings, date codes, and component provenance prior to dispatch
Procurement Process
- Submit RFQ via product page or email support@konmask.com
- Receive availability confirmation and lead time within 24 hours
- Review and approve proforma invoice
- Payment via T/T, PayPal, or approved credit terms
- Dispatch with full shipping documentation (commercial invoice, packing list, COC)
- Post-delivery technical support available via email or WhatsApp
Technical FAQ
Q: Is IS200EDEXG1AFA compatible with all Mark VI revisions?
A: It is designed for EX2100 excitation systems paired with Mark VI (MKVI) controllers. Compatibility with Mark VIe should be confirmed against your system’s I/O rack revision — contact us with your system serial number for verification.
Q: Can this board be used as a direct replacement without reconfiguration?
A: In most cases, yes. The IS200 series uses hardware-defined I/O addressing. However, we recommend verifying the revision suffix (G1A vs G1B etc.) against your existing board label before ordering.
Q: Do you provide installation support?
A: Yes. Our engineering team can provide remote commissioning guidance and GE Mark VI Toolbox configuration support as part of the procurement package.
Q: What is the lead time for in-stock units?
A: In-stock units ship within 1–3 business days. Out-of-stock lead time is typically 2–4 weeks depending on sourcing channel.
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