Description
Key Technical Specifications
- Model Number: DS200DCFBG1BLC
- Manufacturer: GE. Series: Mark V / EX2000 Drive Control System
- AC Input Voltage: 38 to 115 VAC
- DC Output Rails: +5 VDC (4A), ±15 VDC (0.8A), ±24 VDC (3A/1A)
- Feedback Interface: Armature & Field Shunt (50 mV–250 mV)
- Signal Processing: Onboard VCO (Voltage-to-Frequency Converter)
- Protection: 3x Internal Fuses (Fan & ±15V rails)
- Configuration: 12 Jumpers, 7 DIP Switches
- Operating Temperature: -30°C to +70°C
Functional Role & Application Analysis
The GE DS200DCFBG1BLC acts as the critical power and signal front-end for GE Mark V and EX2000 drive racks. It converts raw cabinet AC power into clean, regulated DC voltages required by control boards. More importantly, it conditions millivolt-level feedback signals from armature and field shunts using an onboard Voltage-to-Frequency Converter (VCO). This solves the exact problem of high-voltage transients corrupting sensitive logic, providing 0.5% measurement accuracy without requiring shielded twisted pairs across the cabinet.
Typical use cases include:
- DC Drive Control: Providing isolated control-level power and shunt feedback for DC2000, AC2000, and EX2000 drives.
- Turbine Protection: Supplying stable ±15V and +5V rails to Mark V core processors and I/O modules in steam/gas turbine control cabinets.
- Legacy Maintenance: Replacing degraded power boards to restore drive loop stability and prevent nuisance trips caused by drifting feedback signals.
Our Quality Standard & Testing Process
We understand that the cost of an unreliable safety part is far greater than its purchase price. We have established a rigorous, multi-stage testing process to ensure every product we ship is 100% functional.
- Visual & Component Inspection: All parts undergo professional cleaning and visual inspection to ensure no physical damage, corrosion, or compromised components.
- Live System Test: The module is installed in a live GE Mark V test rack and run for 24 hours to verify continuous operation and power rail stability.
- Full-Function Diagnostics: We simulate shunt feedback signals to test the VCO output frequency accuracy and verify the ±15V regulator load capacity.
- Warranty Backing: Only parts that pass all diagnostic tests are approved for shipment and backed by our full 12-month warranty.

GE DS200DCFBG1BLC
Compatibility & Migration Paths
To ensure this DS200DCFBG1BLC is 100% compatible with your system, you must check these key compatibility points. Failure to verify this is a common project risk.
- Firmware/Hardware Revisions: Confirm your existing SDCC/LDCC processor cards are configured to recognize the specific VCO scaling of the G1BLC revision.
- Required Components: Verify your CPT (Control Power Transformer) 38 VAC feed is within ±10%. Undervoltage will cause the +5V rail to fold back and reset the processor.
- Replacement & Alternatives: The DS200DCFBG1BJB is an earlier version without conformal coating. The G1BLC is a direct drop-in replacement but requires checking DIP switch settings for your specific shunt rating.
- Get Expert Help: Unsure about your VCO calibration or DIP switch settings? Contact our technical team today for a free compatibility check.


