Description
The GE DS200SDCIG2AHB is a critical Power Supply and Instrumentation Board (SDCI) designed for General Electric’s Mark V Speedtronic Turbine Control System. It primarily serves as a high-performance interface for DC2000 drives, providing logic power and signal conditioning for turbine control and drive assemblies.
As part of the Mark V Series, the DS200SDCIG2AHB incorporates advanced Speedtronic technology to ensure deterministic control. It is a revised version of the original DS200SDCIG2 parent PCB, featuring functional improvements denoted by its specific “AHB” suffix.
GE DS200SDCIG2AHB
Technical Specifications (Datasheet)
The DS200SDCIG2AHB provides multiple power circuits and interface logic to sustain the drive’s control environment.
| Feature | Specification |
| Manufacturer | General Electric (GE) |
| Series | Mark V (DS200 Series) |
| Part Number | DS200SDCIG2AHB |
| Functional Acronym | SDCI |
| Power Output 1 | +5 VDC (4.0 A) |
| Power Output 2 | ±15 VDC (0.4 A) |
| Power Output 3 | ±24 VDC |
| Power Output 4 | 115 VAC (0.4 A) |
| Max Input Voltage | Up to 600 VAC (on compatible DC2000 drives) |
| Hardware Group | Group 2 (G2) |
| Weight | Approximately 1.21 kg (2.6 lbs) |
Core Functions & Features
- Integrated Power Management: The board converts incoming power into multiple stabilized DC and AC voltages required by other control cards in the rack.
- SCR Gating Support: Includes driver circuits for Armature Silicon Controlled Rectifier (SCR) gating, which is vital for DC motor control.
- Monitoring & Diagnostics: Equipped with real-time monitoring for voltage and current. It features five onboard fuses (FU1-FU3, FU5, FU6), each associated with an LED indicator that illuminates upon fuse failure.
- Interface Circuitry: Serves as a primary instrumentation bridge for motor field power circuits (when SCR modules are not in use) and various external feedback loops.
- Customizable Jumpers: Features two manually configurable jumpers:
- JP1: MD Control Source Jumper.
- JP2: MA AC Contactor Drop-Out Time Jumper.
- Configurable Switch (SW1): A “Select CT Line Burdens” switch used to adjust AC line current transformer burdens based on nominal DC output current.
Country of Origin
- Primary Origin: United States (USA).
Installation & Maintenance Guidelines
- Static Sensitivity: This board is highly susceptible to Electrostatic Discharge (ESD). Always wear a grounded wrist strap and keep the module in its protective antistatic bag until the moment of installation.
- Replacement Procedure: Before swapping boards, ensure all power to the drive assembly is disconnected. Refer to GE Instruction Manual GEI-100173 for the specific replacement sequence.
- Configuration Matching: Upon installation, all jumpers and the SW1 switch settings must be manually verified and adjusted to match the settings of the board being replaced to ensure system compatibility.
Recommended Related GE Mark V / DC2000 Products
To maintain or expand a Mark V or DC2000 system architecture, the following related modules are frequently utilized:
- DS200LDCCH1A: LAN/Drive Control Processor Board (The “brain” of many DC2000 setups).
- DS200PCCAG1A: Power Connect Card often used in conjunction with the SDCI for power distribution.
- DS200ADGI: Auxiliary Interface Board for additional signal conditioning.
- DS200TCDAH1B: Digital I/O Terminal Board for field signal termination.
- IS200STCIH1A: Modern STCI Series Terminal Board (for newer Mark VI/VIe migrations).
