Description
Product Overview
The GE DS200UCPB is an I/O Engine CPU daughter board for the GE Speedtronic Mark V turbine control platform. This PCB mounts directly onto the STCA motherboard within Mark V I/O engine assemblies. Powered by an Intel 80486DX processor, it performs local I/O signal acquisition, data processing, COREBUS packet communication and peripheral interface management. The board is fitted with SIMM DRAM sockets, flash and EPROM memory for firmware storage, dual RS-232 serial ports and ARCNET communication circuitry. It facilitates data exchange between the I/O engine, triple redundant TMR main controllers and operator HMI stations. This legacy turbine control card is end-of-production and widely stocked as critical spare for gas turbine, steam turbine and combined-cycle power plant control cabinets. Common full part revisions include DS200UCPBG5ADA and DS200UCPBG6AFB.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | DS200UCPB |
| Manufacturer | GE General Electric |
| Product Category | I/O Engine CPU Daughter Board |
| Control Platform | Speedtronic Mark V Turbine Control System |
| Onboard Processor | Intel 80486DX |
| Memory | SIMM DRAM socket, Flash / EPROM for firmware |
| Communication Interfaces | Dual RS-232, ARCNET, COREBUS |
| Supply Voltage | +5VDC supplied by backplane |
| Mounting | Daughter card, plug-in to STCA mainboard |
| Status Indication | Onboard LEDs for power, run and fault status |
| Diagnostics | Watchdog timer, memory self-test, communication fault detection |
| Operating Temperature | 0°C ~ +60°C |
| Storage Temperature | -40°C ~ +85°C |
| Relative Humidity | 5% ~95% non-condensing |
| Approximate Weight | 0.78 kg |
Compliance & Certifications
- CE mark compliant with EMC and Low Voltage Directive
- Designed to GE Speedtronic turbine control specifications
- RoHS compliant
- Factory power-on, memory, communication and I/O functional test before shipment
Storage & Installation Guidelines
Storage Requirements
- Store in dry temperature-controlled warehouse; recommended ambient 10°C ~30°C, RH <70% non-condensing
- Keep sealed inside original anti-static packaging prior to installation
- Protect against mechanical shock, continuous vibration, dust and corrosive vapors
- ESD wristband required for unpacking and PCB handling
Installation Instructions
- Complete lock-out/tag-out procedures and cut all power to the Mark V turbine control rack before board replacement
- Wear ESD protective gear to prevent electrostatic damage to circuit components
- Open the Mark V I/O engine enclosure and fully discharge internal power supply capacitors
- Remove the existing DS200UCPB daughter board from the STCA motherboard
- Align connectors and install replacement DS200UCPB, secure standoff fasteners
- Confirm jumper and DIP switch settings match the original site board revision
- Restore cabinet power, load firmware and turbine control application logic
- Perform I/O engine startup test, COREBUS communication check and TMR voting validation; commissioning must be carried out by certified GE turbine control technicians
FAQ
Q: What control system uses DS200UCPB? A: It is used in GE Speedtronic Mark V gas and steam turbine control systems, serving as the CPU daughter card for the I/O Engine.
Q: What is the primary function of DS200UCPB? A: It handles local I/O processing and COREBUS communication between the I/O engine and the Mark V TMR main control cores.
Q: Do I need to match the suffix revision number? A: Yes, different suffix revisions (such as G5ADA, G6AFB) have different firmware and hardware; revision matching is mandatory for TMR redundant racks.
Q: Is DS200UCPB a standalone main board? A: No, it is a daughter board and must be installed onto the STCA motherboard.
Q: What warranty is available? A: Standard 12-month warranty applies for fully tested boards operated under rated normal operating service conditions.
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