DS200DSPCH1ADA GE Turbine Control LCI Card

Product Description

The DS200TCQCG1A is an Analog I/O Expander Board manufactured by General Electric for the Mark V LM gas turbine control system. It scales and conditions additional analog signals received from I/O core terminal boards, while also providing LVDT and LVDR excitation. Furthermore, the board handles servo output configuration, pulse-rate signal conditioning, and selected generator and turbine measurement signals.

Functional Description

The DS200TCQCG1A (TCQC) processes analog signals from the I/O core terminal boards before transferring the conditioned signals to other control boards. Its functions include scaling and conditioning mA inputs, pulse-rate signals, liquid fuel flow signals, and high-pressure shaft speed signals.

The board also provides excitation for LVDT and LVDR transducers. In addition, it supports signal exchange with the STCA and TCQA boards through designated connectors, depending on the signal and installed system configuration.

Signal Processing and Interfaces

• Analog signal conditioning: Scales and conditions mA inputs for the megawatt transducer signal before transferring the processed signal to the STCA board through the 19PL connector.
• Pulse-rate processing: Scales and conditions pulse-rate inputs, including liquid fuel flow and high-pressure shaft speed signals.
• TCQA communication: Transfers liquid fuel flow and high-pressure shaft speed signals to the TCQA board through the JE connector in the R1 core.
• STCA signal exchange: Exchanges generator and line signals between the STCA and TCQC boards through the JE connector.
• Transducer excitation: Supplies excitation for LVDT and LVDR transducers.
• IONET termination: Provides IONET termination when the optional 21> configuration is installed.

Hardware Configuration

The first 16 hardware jumpers determine the servo output current configuration. Odd-numbered jumpers select the source output resistance, while even-numbered jumpers determine feedback scaling.

For servos 1 through 4, additional feedback scaling options are available through jumpers 25 to 36. These settings support a maximum current range of +/-240 mA.

Other jumper functions include:

• BJ17: Designates the RS232 port for card testing.
• BJ18 and BJ20: Control the P15 and N15 supplies to proximity transducers.
• BJ21: Enables the stall timer.
• BJ22: Enables the oscillator for factory testing.
• BJ23 and BJ24: Not utilized.
• JP38 and JP39: Control magnetic pickup gain for liquid fuel flow signals in certain system configurations.

Technical Specifications

Configuration and Selection Notes

The jumper settings directly affect servo output characteristics, including source output resistance and feedback scaling. Therefore, maintenance personnel should check the installed board configuration against the original system settings before replacement or adjustment.

Meanwhile, JP38 and JP39 require particular attention in systems that use magnetic pickup signals for liquid fuel flow measurement. Their configuration may vary between installations.

Frequently Asked Questions

Q: What is the primary function of the DS200TCQCG1A?

A: It scales and conditions analog and pulse-rate signals in the Mark V LM control system. It also provides LVDT and LVDR excitation and supports servo output configuration.

Q: How is the servo output current configured?

A: The first 16 hardware jumpers determine source output resistance and feedback scaling. Jumpers 25 to 36 provide additional feedback scaling options for servos 1 through 4, supporting a maximum current range of +/-240 mA.

Q: What should be checked when replacing this board?

A: Check the servo jumper settings, transducer supply configuration, magnetic pickup gain settings where applicable, and the required signal connections. These settings should correspond to the original system configuration.

Other Attributes

• Series: Mark VI IS200
• Country of Origin: USA
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of The GE Speedtronic Mark V

Our Competitive Brands

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• - Ovation, Foxboro, EPRO, Emerson DeltaV, Fuji, Siemens, HIMA, Prosoft, Invensys Triconex, ICS TRIPLEX, Woodward, Bachmann, Schneider

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