Model Interpretation

DS200: GE Mark V series control board coding

DCFB: DC Feedback Board for direct current signal acquisition and conditioning

G: Hardware revision designation

1BLC: Specific component layout, component configuration and factory revision code

Technical Parameters

Electrical Specifications

Operating supply: 5VDC and ±15VDC derived from rack backplane

Typical power consumption: 3.8W

Input signal range: 0–±10VDC analog feedback signal

Internal signal isolation: 1500VAC between field input and control logic circuit

A/D conversion resolution: 12-bit with built-in hardware filtering

Mechanical & Environmental Data

Overall dimension: 332mm × 216mm × 32mm

Net weight: approximately 0.78kg

Operating ambient temperature: -20°C ~ +65°C

Storage temperature: -40°C ~ +85°C

Humidity range: 5%–95% non-condensing

PCB with conformal coating, IP20 cabinet installation grade

Certification: UL, CE compliant for power plant control application

Onboard Interface

Edge card connector for rack backplane data and power connection

Screw terminal block for field DC feedback wiring access

Multiple diagnostic indicator LEDs for power status and channel fault alarm

Core Functions

Receives raw DC current and voltage feedback signals from field converters, excitation modules and auxiliary motors.

Filters and amplifies input analog signals to standard range matching Mark V controller requirement.

Converts analog feedback data into digital format for main control board closed-loop calculation.

Executes channel self-test on power-up and sends fault codes to system diagnostic log when input open circuit or over-range occurs.

Delivers real-time feedback to adjust output control commands and stabilize equipment running status.

Applications

Gas turbine and steam turbine control cabinet of thermal power and combined-cycle power station with Mark V control system.

Generator static excitation system feedback monitoring and closed-loop control.

Oil & gas industry turbine-driven compressor unit control.

Heavy industrial boiler and large rotating machinery auxiliary drive regulation.

Usage & Maintenance Instructions

Insert into standard Mark V 19-inch rack slot and lock front panel fixing screws during installation.

Deploy shielded twisted cable for field feedback wiring and separate low-level signal wiring from high-power cables.

Complete channel calibration via GE dedicated configuration software after wiring completion.

Periodically check LED status and terminal connection tightness during routine maintenance.

No field-replaceable internal components; replace full board permanently upon irreversible circuit damage.

Compatible with full range of Mark V series CPU and terminal boards.