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GE IS215GFOIH1AB

Product Name:​ Mark VIe Field Output Interface Board (GFOIH1A Family)
Product Introduction:​ The GE IS215GFOIH1AB is a Field Output Interface Board belonging to the GFOIH1A family, designed for the Mark VIe turbine control system. It is used in gas/steam turbine control with high reliability, providing field voltage & current sampling, speed/synchronizing inputs, and 6-channel SCR gating pulses for the exciter rectifier bridge.
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Detailed content

Technical Specifications:
  • Control Platform: Mark VIe / Mark VIeS
  • Revision: B (minor revision, downward compatible with IS215GFOIH1A)
  • Electrical Interfaces:
    • Field voltage input: 0–600 V AC differential
    • Field current input: 0–1 A AC (CT secondary)
    • SCR gate pulses: 24 V DC, 1 A peak, 120° width
    • Speed signal: 0–20 kHz, passive or active pickup
    • Sync voltage: 100–240 V AC
  • Power & Consumption: Logic supply 24 V DC ±10%, < 15 W
  • Isolation: 2.5 kV channel-to-ground; on-board MOV & TVS transient suppression
  • Environmental: Operating temperature 0–65 °C; Humidity 5–95% RH non-condensing; Cabinet forced-air cooling ≥ 2 m/s
  • Mechanical: Single-slot 6U Eurocard, PCB 160 mm × 233 mm; Front panel 8 HP (40 mm) high with status LEDs; 160-pin HD connector
  • Certifications: CE, UL 508; EMC: IEC 61000-4-2/3/4/5/6 Level 3; Vibration: IEC 60068-2-6, 2 g, 5–500 Hz; Shock: IEC 60068-2-27, 15 g, 11 ms
Key Features:​ Enables closed-loop control and protection of the gas-turbine field circuit; IS215GFOIH1AB achieves ±0.05% full-scale accuracy, outperforming conventional modules (±0.1%); 3 kV RMS isolation (for IS215GFOIH1AB) withstands extreme power plant conditions including high temperatures, EMI, and voltage surges, reducing downtime by over 90% compared to standard modules.
Compatibility:​ IS215GFOIH1AB is downward compatible with IS215GFOIH1A; update ToolboxST HW description after swap. IS200GFOIH1A (Mark VI version) is not interchangeable with IS215 versions due to different back-plane, software, and terminal boards.
Related Components:​ Terminal boards: IS200TGOIH1A, IS200TGOIH2A, IS400TGOIH1A; Cable assembly: IS200WGOIH2A (12-core shielded, 3 m / 6 m / 9 m); Main processors: IS215UCVEH2A (Mark VIe), IS200VTURH2A (Mark VI).
Software Support:​ Mark VIe: ToolboxST v7.0 or later (auto-detects HW revision); Mark VI: configured via CIMPLICITY.
Working Principle:​ The board provides field voltage and current sampling, processes speed and synchronizing inputs, and generates 6-channel SCR gating pulses for the exciter rectifier bridge, enabling closed-loop control and protection of the gas-turbine field circuit.

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