Description
Product Overview
The GE DS200CTBAG1 (CTBA board, common full revisions DS200CTBAG1ADD / DS200CTBAG1ACC) is an analog termination PCB for GE Speedtronic Mark V turbine control system. It acts as the physical signal interface between field analog sensors and the Mark V I/O engine, performing analog signal termination, surge protection, signal conditioning and signal routing. It accepts 4–20mA, voltage and thermocouple analog field signals, filters and clamps transient voltage spikes, then forwards conditioned signals to core control boards via COREBUS. This board supports both simplex and TMR triple redundant Mark V configurations for gas turbines, steam turbines and combined cycle power plants. It is legacy end-of-manufacture hardware and widely stocked as maintenance spare for existing turbine control cabinets.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | DS200CTBAG1 (suffix variants: DS200CTBAG1ADD, DS200CTBAG1ACC) |
| Manufacturer | GE General Electric |
| Product Category | Analog Termination Board (CTBA) |
| Control Platform | Speedtronic Mark V Turbine Control System |
| Signal Types | 4–20mA, DC voltage analog signals |
| Communication Interface | COREBUS, 9-pin D-sub serial port |
| Protection Circuit | Onboard surge suppression diodes and resistors for signal spike protection |
| Power Supply | +5VDC / ±12VDC supplied from rack backplane |
| Mounting | Plug-in PCB inside Mark V control rack |
| Diagnostics | Continuity monitoring for analog input channels, hardware fault detection |
| Operating Temperature | -20°C ~ +60°C |
| Storage Temperature | -40°C ~ +85°C |
| Relative Humidity | 5% ~95% non-condensing |
| Approximate Weight | 0.6 kg |
Compliance & Certifications
- CE mark compliant with EMC and Low Voltage Directive
- Designed to GE Speedtronic turbine control specifications
- RoHS compliant
- Factory power-on, channel loop and COREBUS communication 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
- Remain sealed inside original anti-static packaging before installation
- Protect from mechanical shock, continuous vibration, dust and corrosive vapors
- ESD wristband required when unpacking and handling PCB assemblies
Installation Instructions
- Execute lock-out/tag-out and cut all control rack power before board replacement
- Wear ESD protective gear to prevent electrostatic damage to circuit components
- Open Mark V rack enclosure and fully discharge internal power supply capacitors
- Disconnect field analog wiring, COREBUS cables and backplane connector from old DS200CTBAG1
- Insert replacement board into rack slot, secure mounting hardware
- Reconnect field analog termination wiring and COREBUS links; verify wiring matches original terminal schedule
- Restore cabinet power, perform analog channel point-to-point signal test
- Validate COREBUS communication with I/O engine and check TMR voting; commissioning must be completed by certified GE turbine control technicians
FAQ
Q: What system uses DS200CTBAG1? A: It belongs to GE Speedtronic Mark V gas and steam turbine control system, used for analog signal termination.
Q: What is the core function of DS200CTBAG1? A: It terminates field analog signals, provides surge protection and signal conditioning, and routes analog data to the Mark V I/O engine over COREBUS.
Q: Is suffix revision matching required? A: Yes, suffix variants (ADD / ACC) differ in PCB coating and component revisions, revision matching is critical for TMR redundant racks.
Q: What signals can this termination board handle? A: Primarily 4–20mA and DC voltage analog measurement signals from turbine field transmitters.
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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