DS200FCGDH1B - Gate Distribution and Status Card

SPECIFICATIONS:

Part No: DS200FCGDH1B
Manufacturer: General Electric
Product Type: Gate Distribution and Status Card
Function: DIN-rail mounting
Series: Mark VI
Number of Channels: 12
Span: -8 mV to +45 mV
Operating temperature: -30 to 65 ºC
Power Supply Voltage: 24 V dc
Board Size: 9.2x6.3 inch
Weight: 0.45 kg
Availability: In Stock
Country of Origin: USA
Manual: GEI-100221

FUNCTIONAL DESCRIPTION:

DS200FCGDH1B is a Gate Distribution and Status Card manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Control Systems. An interface board for a 6-pulse phase-controlled, non-reversing bridge is called the Gate Distribution and Status Card (FCGD). Through the VME backplane, it transmits feedback and diagnostic data after receiving SCR firing data from the DS200DSPC (DSPC, the VME processor) chip. The FCGD receives a multiplexed cell status signal from each bridge leg and decodes and de-tributes the cell gating signals for each bridge leg. Additionally, it takes in bridge feedback signals, scales them, and then transmits the voltage, frequency, and current status data back to the DSPC board.

BOARD FUNCTIONS:

• SYSTEM CLOCK: The FCGD features a system clock register that produces firing commands and timestamp feedback values. This 16-bit up-counter ends when it reaches the hexadecimal value 0FFFFH and resets to 0.

• SYSTEM RESET: During power-ups or hardware resets, the system reset signal sets all of the registers on the board to their starting settings.

• SYSTEM HEARTBEAT: An electronic component's heartbeat serves as a periodic signal indicating that the component is still operational. This function is supported by the FCGD's system heartbeat register. The board-level heartbeat starts to count after the VME host CPU writes to it for the first time, and an IMOK-labeled green board-front LED turns on.

• FIRING COMMANDS: A firing mask register with six entries that correspond to the six-cell strings in a bridge controls the fiber-optic firing signal transmitters. Up to six fiber-optic transmitters can be turned on simultaneously by the FCGD. The host CPU has the option to directly write data to the firing mask register across the VME bus connection.

• VOLTAGE FEEDBACK FROM NATO: Over a 20-pin ribbon wire, the Voltage Feedback Scaling (NATO) board sends input signals to the FCGD (see Table 5). These signals include three ac voltages referred to ground through a local resistor, five attenuated analog voltage signals that correspond to plus and negative dc, and five attenuated analog voltage signals. To maintain the output signals inside the 10 V range of the signal electronics, the input range is rescaled using the jumpers on NATO. The VME backplane has test points for the Va, Vb, Vc, Vp, and Vn signals.

• ANALOG AND DIGITAL CONDITIONING: For analog voltage, current, and flux feedback, voltage-controlled oscillators are utilized. The VCOs are driven by the signals VA, VB, VC, VDC, IA, IC, FLUXBAR, and FLUXCBR (see Table 1). Additionally, six parallel Sigma-Delta converters that work with the VCOs are fed with the voltage and current signals.

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FREQUENTLY ASKED QUESTIONS:

What is a Gate Distribution and Status Card?

A Gate Distribution and Status Card is a critical component used in control systems to manage and distribute signals or data between various components. It is commonly utilized in industrial environments, such as power plants, manufacturing units, and automated systems, where it plays an essential role in monitoring and controlling processes. These cards are designed to ensure efficient data flow and operational reliability.

What are the main functions of a Gate Distribution and Status Card?

The primary functions of a Gate Distribution and Status Card include signal distribution, status monitoring, error detection, and data synchronization. The card routes control signals to different subsystems within a system, monitor their operational status in real-time, detect and report faults or irregularities, and ensures that data is consistent and synchronized between components. These capabilities are vital for maintaining the smooth and efficient operation of complex industrial systems.

Where is a Gate Distribution and Status Card typically used?

Gate Distribution and Status Cards are typically used in various industrial settings, such as power plants where they manage turbine control systems, manufacturing environments for process control, and robotics or motion control systems. These cards ensure reliable signal routing and status updates in automated environments, making them essential for maintaining operational efficiency and safety.