DS200STCAP1AAB - Turbine Communication Board

SPECIFICATIONS:

Part Number: DS200STCAP1AAB
Manufacturer: General Electric
Series: Mark V LM
Product Type: Turbine Communication Board
Number of relay channels: 12
Power supply voltage: 24 V dc
Power Requirements: +5 V dc, 6 A
Repair: 3-7 Day
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: -30 to +65°C
Size: 15.9 cm high x 17.8 cm
Availability: In Stock
Country of Origin: United States
Manual: GEH-6183

FUNCTIONAL DESCRIPTION:

DS200STCAP1AAB is a Turbine Communication Board manufactured and designed by General Electric as part of the Mark V LM Series used in GE Speedtronic Control Systems. The Turbine Communication Board (STCA) functions as the IONET master for the I/O cores. Each of the I/O cores has an STCA board. Signals are read through the various connectors, conditioned, and written to the I/O Engine located on the UCPB daughterboard via the bus connectors J1 and J3. The signals are written to the COREBUS connections located on the QTBA or CTBA boards via the JEE connector.

STCA CONFIGURATION:

Hardware: Hardware jumper JP2 enables the test points for factory testing. Hardware jumper JP4 selects the voltage needed for the flash EPROM. Refer to Appendix A and the hardware jumper screen on the operator interface for information on the hardware jumper settings for this board.

Software: I/O configuration constants for the pulse rate inputs, compressor stall detector, and synchronization settings are entered in the I/O Configuration Editor on the operator interface as described below.

STCA PULSE RATE INPUT CIRCUIT:

The STCA board scales and conditions the pulse rate inputs read from the TCQC board. These signals originate from magnetic pickup devices whose signals are written to the TCQC board by the QTBA, TBQB, and/or PTBA terminal boards. The core reads the high-pressure shaft pulse rate inputs. The pulse rate inputs in each core are independent and are used for different purposes.

STCA SYNCH CHECK CIRCUIT:

The generator and bus voltage inputs are read from the TCQC board via the 19PL connector. These signals originate on the PTBA terminal board in the core and are written to the TCTG board in the core via the JN connector. The signals are then passed through the TCTG board via the JDR/S/T connectors to the JD connector on the TCQA board in the core. The signals are passed through again to the TCQC board in the core via the JE connector. The TCQC board provides scaling and conditioning of the signals before writing them to the STCA board via the 19PL connector. The synchronizing check (synch check) is done on the STCA board and the results are sent back across the same path to the TCTG board where they are used in conjunction with the automatic sync signals for generator breaker synchronizing commands.

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FREQUENTLY ASKED QUESTIONS:

What is the role of the Turbine Communication Board in a turbine control system?

The primary role of the Turbine Communication Board is to ensure smooth and reliable data exchange between different elements of the turbine control system. It helps in transmitting sensor data to the controller, receiving control commands from the controller, and providing feedback signals for monitoring and diagnostics.

What types of communication protocols are supported by Turbine Communication Boards?

Turbine Communication Boards typically support various communication protocols such as Modbus, Profibus, Ethernet/IP, DeviceNet, and CANbus, among others. The choice of protocol depends on the specific requirements of the turbine control system and the compatibility of the devices involved.

How does the Turbine Communication Board ensure data integrity and reliability?

Turbine Communication Boards employ error-checking mechanisms such as checksums, cyclic redundancy checks (CRC), and packet acknowledgment to ensure data integrity during transmission. Additionally, they may implement protocols for retransmission of lost or corrupted data packets to enhance reliability.