DS215TCCBG8BZZ01A - Analog I/O Board

DS215TCCBG8BZZ01A - Analog I/O Board DS215TCCBG8BZZ01A - Analog I/O Board

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Part Number: DS215TCCBG8BZZ01A
Manufacturer: General Electric
Series: Drive Control
Availability: In Stock
Function: Common Extended Analog I/O Board
Product Type: Circuit Board and FW
No.of RTDs: 14
Bus frequency: 0 to 64Hz
Milliamp input signals: 14
Repeater Types: Fiber Optic Hubs
Manual: GEH-6195
Country of Manufacture: United States (USA)

Functional Description

DS215TCCBG8BZZ01A is a common extended analog I/O board developed by GE. It is a part of GE drive control system. The Common Extended Analog I/O Board scales and conditions additional analog I/O signals read from the R5 core's TBCB terminal board and the P1 core's TCEB board. 4.20 mA/0.1 mA inputs, RTDs, generator and bus voltage inputs, and line current inputs are among the signals. The scaled and conditioned signals are received by the board via the 3PL connector. The model includes the capability of performing built-in diagnostics testing, including background and manually started diagnostic processes, as well as power-up routines. One key memory function that can be employed with this model is the EEPROM, or electrically erasable programmable read-only memory, which will be used in permanent and up-to-date storage application software.


  • 2PL Connector: This connector is responsible for power distribution from the TCPS board in the R5 core. It allows the transfer of power signals to the module, ensuring proper power supply for its operation.
  • 3PL Connector: The 3PL connector is associated with the Data Bus in the R5 core. It serves as the interface for connecting the STCA, TCCA (Time Control and Coordination), and TCCB boards. The Data Bus facilitates the exchange of data and signals between these boards, enabling coordination and communication within the core.
  • COREBUS: Conditioned signals are transferred to the COREBUS via the 3PL connector. The COREBUS acts as a central bus or pathway for transmitting these conditioned signals within the module. It allows for the transfer of important signals to the relevant components or subsystems.
  • JHH Connector: This connector carries the 4.20 mA/0.1 mA input signals from the Terminal Board Control Block terminal board. It serves as a pathway for these input signals, allowing them to be transported to the appropriate destination within the module.
  • JII Connector: The JII connector is utilized to transport RTD (Resistance Temperature Detector) input signals from the TBCB terminal board. It provides a connection for these signals, ensuring their transfer to the intended modules or components.
  • JMP Connector: In the P1 core, the JMP connector is responsible for transporting potential and current transformer (PT and CT) signals from the TCEB board. It establishes the necessary connections for these signals to reach their destination within the module.
  • JKK Connector: The JKK connector is stated to be not commonly used. While specific details about its functionality are not provided, it can be inferred that it might serve as an optional or auxiliary connector for specialized purposes, depending on the specific application or requirements.
  • JTEST Connector: Similar to JKK, the JTEST connector is also not commonly used. It may be intended for testing or diagnostic purposes, allowing for specialized connections or signal monitoring during specific scenarios.
  • TCQPL Connector: The TCQPL connector is also noted as not commonly used. Its specific purpose or function is not elaborated upon, suggesting that it is not typically utilized in standard applications.


  • Configuration plays a critical role in ensuring the optimal performance and functionality of any complex system, and the Mark V LM is no exception. This state-of-the-art system relies on a well-defined hardware and software configuration to facilitate its generator and bus voltage monitoring, as well as line current monitoring functions.
  • Starting with the hardware configuration, the Mark V LM utilizes several key hardware jumpers to enable essential monitoring and testing capabilities. These hardware jumpers, namely J1, J2, J3, J4, and J5, serve as vital connectors that establish connections within the system. By strategically configuring these jumpers, the Mark V LM gains the capability to monitor generator performance, bus voltage levels, and line current data. These functions are crucial for ensuring the system's stability and safeguarding it against potential issues that might arise during operation.
  • Hardware jumper J14 is of particular significance as it establishes a physical connection between the RS232 serial port and DCOM. This connection paves the way for seamless communication between different components of the system, enhancing data exchange and system coordination. On a similar note, J15 and J16 hardware jumpers serve as valuable tools for testing and validation. These jumpers likely facilitate a controlled environment for system testing, allowing engineers to assess the system's behavior under various conditions without risking any unintended consequences.
  • Moving on to the software configuration, the Mark V LM employs the I/O Configuration Editor, a user-friendly interface accessible through the Human-Machine Interface (HMI). This editor serves as a central hub for input and output configuration constants, which are essential parameters that govern the behavior of various components within the system.
  • These configuration constants are tailored to different aspects of the system. For instance, RTDs (Resistance Temperature Detectors) and mA (milliampere) inputs likely relate to temperature and current measurement devices respectively. By entering the appropriate configuration constants for these inputs, the system can accurately interpret and utilize the data gathered from these sensors.
  • The generator and bus voltage settings, as well as line current settings, also fall under the purview of the I/O Configuration Editor. These settings are pivotal for monitoring and regulating the electrical aspects of the system. Proper configuration ensures that the system maintains safe operating conditions and responds appropriately to any deviations from the expected values.

RTD Circuit

  • The TCCB board contains the circuitry that supplies excitation to the RTDs from the TBCB terminal board. A constant current is passed through the RTD, and as the temperature changes, so does the resistance, causing the voltage on the RTD to change.
  • The voltages are measured, scaled, and condition by the board. The TCCB board reads the RTD signals from the TBCB terminal board via the JCC and JDD connectors.
  • The signals are sent to the I/O Engine by the board via the 3PL connector. I/O configuration constants are used to select the type of RTD.

Generator/Bus Voltage and Current Input Circuits

  • On the board, the voltage signals from the generator and bus, as well as the current signals from the line (PT and CT), are scaled and conditioned.
  • These signals are used to define phase currents and voltages, as well as to calculate generator megawatts, power factors, and VARs for power system monitoring.
  • These signals are read from the PTBA terminal board, scaled in the P core, and written to the board via the JMP connector.

System Features

  • Application Flexibility: Turbine Control Systems are designed to be compatible with medium and large steam turbines, heavy-duty gas turbines (single or dual shaft), and gas turbines derived from aircraft engines. This broad applicability allows the systems to be employed across a wide range of turbine configurations, accommodating different power generation or industrial applications.
  • Redundant Sensors and Devices: To enhance unit reliability, Turbine Control Systems incorporate redundant sensors and devices for feedback, control, and protection of critical functions. Redundancy ensures that even if one of the devices or sensors fails, the system's operation remains unaffected. This redundancy is crucial for maintaining uninterrupted operation and mitigating the risk of system failures.
  • Control Panel Connection: The redundant devices are connected to the control panel, which serves as the central hub for monitoring and regulating the turbine's operation. The control panel provides the interface for operators to observe and adjust various parameters and settings. The connection of redundant devices to the control panel is a critical factor in the design, ensuring seamless integration and coordinated functionality.
  • Control Software Regulation: The control software plays a vital role in regulating the operation of the turbine control and protection system. It is responsible for coordinating the actions of redundant devices, monitoring critical parameters, and making adjustments as necessary. The control software ensures that the redundant devices work in harmony, contributing to the overall reliability and stability of the system.
  • Fail-Safe Approach: The design of Turbine Control Systems follows a fail-safe approach. By incorporating redundant devices and employing appropriate control strategies, the systems aim to prevent catastrophic failures and maintain reliable operation. The fail-safe approach prioritizes system integrity and protection, providing a high level of reliability and safety for turbine operations.

Log Functions

  • With a 62ms resolution, alarms are logged as they occur and as they are cleared.
  • Individual time tag resolution of 62 ms is used to log events (turbine operation) such as engaging the turning gear or closing the generator breaker on the printer. Events can be defined by the user and edited in the field. On the printer, events (contact inputs) are logged with 1ms time tags. The event log includes all contact inputs to the Mark V.
  • Logging can be turned on or off in the field, and individual contact inputs can be deleted from the event log.
  • The trip log serves as documentation for the turbine trip analysis. Each sample can contain up to 63 parameters, with 38 pre-trip samples lasting 5 hours and 3 post-trip samples lasting 3 seconds. This information is displayed on the screen or can be printed.
  • When the unit is restarted, the freeze on the trip log is released, and samples begin to overwrite the memory locations in the log.

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What is DS215TCCBG8BZZ01A?
It is an I/O expansion board developed by GE

How many connectors does the GE I/O Expansion Board have?
The GE I/O Expansion Board has five 26-pin connectors and two 40-pin connectors.

What are the PROM connectors on Board used for?
The PROM connectors are labeled C6, C7, and C8. The drive parameters that control the drive's behavior while in use are stored in the PROM modules on the Board.

What is the purpose of scaling and conditioning analog signals?
The purpose of scaling and conditioning analog signals is to ensure that they are within a usable range and are accurate. This is achieved by scaling the signal to a desired range and conditioning the signal to remove any noise or interference that may be present.

How does the module measure the RTD signals?
It measures the RTD signals by passing a constant current through the RTD and measuring the resulting voltage change. The voltages are then measured, scaled, and conditioned.

What connectors are used to connect the board to the terminal board?
The board reads the RTD signals from the terminal board via the JCC and JDD connectors.