SPECIFICATIONS
Part Number: DS200TCCAF1BDD
Manufacturer: General Electric
Series: Mark V
Product type: Software EPROM
Availability: In Stock
Country of Manufacture: United States (USA)
Functional Description
DS200TCCAF1BDD is a Software EPROM designed and developed by GE. It is a part of the Mark V control system. The Erasable Programmable Read-Only Memory stands as a critical component in various systems, notably employed by security system manufacturers in access control panels. Renowned for its ability to retain data even when there's no power supply, EPROMs serve a pivotal role by storing both the operating system and program instructions essential for access control operations.
Product Features
Non-Volatile Memory
One of the primary characteristics of EPROM technology is its ability to retain stored information without continuous electrical power. This makes it suitable for industrial control applications where programmed instructions must remain available during shutdowns, maintenance activities, or power interruptions. For turbine control systems, retaining the required software information is essential for consistent system operation after power is restored.
Programmed Control Instructions
The EPROM stores programmed instructions that are used by the control system's processing hardware. These instructions determine how the system responds to inputs and how it generates corresponding control outputs. For example, the control logic can process information received from turbine sensors and field devices and use the programmed instructions to determine the appropriate control or protective response.
Support for Mark V Control Logic
The Mark V is a programmable turbine control platform capable of handling complex operating sequences. Its software and hardware work together to coordinate turbine operation. The software memory is therefore an important part of the overall control architecture because it provides the programmed logic required by the processor to perform its assigned functions.
Persistent Software Storage
- Unlike volatile memory, which loses its stored information when power is removed, EPROM retains its programmed contents. This characteristic provides a stable storage medium for software used within industrial control equipment.
- This is particularly valuable in turbine applications where reliable retention of control software is required over extended operating periods.
EPROM and CPU Operation
- The Central Processing Unit (CPU) performs the calculations and logical operations required by the control system. However, the CPU does not independently determine the complete sequence of actions it needs to perform.
- The programmed software provides the instructions that tell the processor how to interpret inputs, execute logic, perform calculations, and produce outputs.
- A simplified operating sequence can be understood as:
- Field Inputs → Mark V Processing → Programmed Control Logic → Output Commands → Turbine Equipment
- Field devices can provide information such as speed, temperature, pressure, position, or other operating conditions. The control processor evaluates these signals according to its programmed instructions and produces the appropriate output signals.
- The software stored in the system's memory therefore forms an important link between incoming operating information and the control actions generated by the system.
EPROM Technology in Industrial Control
- EPROM technology has historically been used in many industrial electronic systems because of its ability to provide reliable non-volatile program storage.
- An EPROM can be programmed with specific software information and, depending on the device technology, can be erased and reprogrammed using specialized equipment. This made EPROM devices useful during system development, configuration, maintenance, and equipment upgrades.
- In legacy turbine control systems such as the Mark V, programmed memory devices can be closely associated with a particular software revision or system configuration. Consequently, replacing a software memory component requires careful verification of the correct part number and software information.
Software Compatibility
- The software stored in a memory device is not necessarily interchangeable between different turbine control configurations.
- For this reason, the eprom should be matched with the appropriate Mark V hardware and software configuration before installation. Technicians should verify the required part number, software revision, application, and system configuration when sourcing a replacement.
- Using an incorrect software memory device can potentially lead to compatibility issues or improper system operation.
System Log functions
- Log functions within a system like the Mark V serve critical roles in capturing, recording, and analyzing various events, alarms, and operational data. Here's an expanded explanation of the log functions provided:
- Alarm Logging: Alarms are logged as they occur and clear with a high resolution of 62 milliseconds. This log records alarm occurrences and their resolution, ensuring a comprehensive history of system alerts.
- Turbine Parameter Logging: The system can log up to 63 turbine parameters. This feature allows for the continuous monitoring and recording of crucial turbine data, enabling performance analysis and diagnostics.
- Events Logging (Turbine Operation): Significant turbine events, such as engaging the turning gear or closing the generator breaker, are logged with individual time tags at a resolution of 62 milliseconds. These events are customizable by users and can be edited in the field, providing detailed insights into operational activities.
- Events Logging (Contact Inputs): Contact inputs registered by the system are logged on the printer with individual time tags at a remarkably precise resolution of 1 millisecond. All contact inputs to the Mark V system are included in this event log. Users have the flexibility to activate or deactivate logging and selectively delete specific contact inputs from the log.
- Trip Log: The trip log is a critical record capturing up to 60 alarms that occurred at the time of the turbine trip. This log is crucial for turbine trip analysis and fault diagnosis. Each sample within the trip log can encompass up to 63 parameters, consisting of 38 pre-trip samples spanning 5 hours and 3 post-trip samples covering 3 seconds. This data is accessible on the display or can be printed for detailed analysis. Notably, the log clears and starts overwriting memory locations once the unit restarts, releasing the freeze on the trip log.
- These log functions collectively form a robust system for recording and storing diverse data types, including alarms, operational events, turbine parameters, and trip-related information. They are instrumental in providing operators and maintenance personnel with a detailed history of system performance, aiding in troubleshooting, analysis, and optimization of the turbine's operation.
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FREQUENTLY ASKED QUESTIONS
What is DS200TCCAF1BDD?
It is a Software EPROM designed and developed by GE
Can users customize event logging related to turbine operations?
Yes, significant turbine events, such as engaging the turning gear or closing the generator breaker, are logged with individual time tags at a 62-millisecond resolution. These events are customizable and editable in the field, providing detailed insights into operational activities.
How are contact inputs handled and logged by the system?
Contact inputs registered by the Mark V system are meticulously logged on the printer with individual time tags at a precise resolution of 1 millisecond. All contact inputs are included, and users can manage logging, enabling selective deletion of specific inputs from the log.
What is the purpose of the Trip Log, and what information does it capture?
The Trip Log captures up to 60 alarms that occurred during a turbine trip, offering critical data for trip analysis and fault diagnosis. Each sample within this log contains up to 63 parameters, comprising 38 pre-trip samples spanning 5 hours and 3 post-trip samples spanning 3 seconds. This information can be accessed on the display or printed for detailed analysis.
How do these log functions benefit operators and maintenance personnel?
These comprehensive log functions provide a detailed history of system performance, aiding operators and maintenance personnel in troubleshooting, analysis, and optimizing turbine operation for enhanced efficiency and reliability.
