GE DS200UCPBG6AFB

Product Introduction:​ The DS200UCPBG6AFB is a core processing board within GE’s Speedtronic™ Mark V turbine control system. It functions as the I/O engine and control processor, executing application code, managing communication with I/O packs, and exchanging data over the Mark V COREBUS network. It contains the main microprocessor, memory sockets, and communication ports required for turbine control logic execution.

Category:
Description
Technical Specifications & Performance Parameters:
  • Processor:​ Intel 80486DX (some sources cite compatibility with higher-grade processors in later revisions)
  • Memory:​ 1 × SIMM/DIMM socket for DRAM; sockets for EPROM/PROM containing application and boot firmware
  • Communication Ports:​ 2 × RS-232 serial ports (DB-25 or header), 1 × ARCNET network interface (for COREBUS/peer communication), optional Ethernet capability via daughter card
  • Core Function:​ Processes analog and digital I/O data, executes turbine control sequences, broadcasts status on COREBUS
  • Power Requirement:​ +5 V DC (primary), +12 V / -12 V (aux. for serial drivers), as supplied by Mark V rack backplane
  • Connectors:​ 34-pin ribbon for local I/O or configuration; backplane edge connector for rack bus; 7-position DIP switch block for configuration/addressing
  • Redundancy Support:​ Compatible with Mark V triple-modular redundant (TMR) or dual architecture
Material & Structural Features:
  • Board Type:​ Multilayer FR-4 PCB with gold-finger backplane connector
  • Dimensions:​ Approx. 309 mm (W) × 211 mm (H) × 41 mm (D) — typical Mark V board format
  • Weight:​ Approx. 1.8 – 2.2 kg
  • Indicators:​ Onboard LEDs for power, run status, fault
Operating Conditions & Installation Requirements:
  • Operating Temp.:​ -40 °C to +85 °C (qualified for turbine enclosure environments)
  • Storage Temp.:​ -40 °C to +85 °C
  • Humidity:​ 5 % – 95 % RH non-condensing
  • Installation:​ Insert into designated slot in GE Mark V control cabinet; secure with captive screws; ensure ESD precautions
  • Handling:​ Handle only by edges; use anti-static wrist strap
Application Scenarios:​ Gas and steam turbine control in power generation, oil & gas compression stations, combined-cycle plants — part of GE Frame 5/6/7/9 turbine control cabinets.
Notes / Precautions:
  • This board must be programmed with the correct PROM/EPROM set matching the turbine application — mismatched firmware will prevent proper operation.
  • Do not attempt field repair; faulty boards should be returned to GE-qualified service centers.
  • Verify proper seating in backplane before powering up; partial insertion can cause bus errors.
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