DS200LSTQF1ACA - Software PROM

SPECIFICATIONS

Part Number: DS200LSTQF1ACA
Manufacturer: General Electric
Series: Mark V
Temperature -30 to + 65 oC
Altitude: 2000 m maximum
Relative humidity: 5 to 95 percent non-condensing
Surge: Designed to ANSI C37.90.1
Repair: 3-5 Days
Product type: Software PROM
Country of Manufacture: United States (USA)

Functional Description

DS200LSTQF1ACA is a Software PROM developed by GE under Mark V control system. The primary use of EPROM in controllers is to store the firmware. This firmware includes the core operational logic that governs how the turbine system functions. EPROM stores data that does not change frequently, such as calibration constants, system identifiers, and other critical parameters that need to be preserved across power cycles.

System Shaft Voltage and Current Monitor

• Voltage Inputs: The monitor is equipped to accept inputs from both shaft voltage and current circuits. These circuits are responsible for continuously monitoring the alternating current (AC) or direct current (DC) voltages and currents that may be present or develop on the turbine and/or generator shafts during operation.
• Detection and Analysis: Through sophisticated sensors and measurement techniques, the monitor can accurately detect fluctuations or abnormalities in shaft-to-ground voltage and current levels. This detection is crucial for identifying potential issues such as electrical imbalance or insulation breakdown.
• Continuous Monitoring: The monitor operates in real-time, providing continuous surveillance of shaft voltages and currents. This proactive approach allows for early detection of any irregularities, minimizing the risk of equipment damage or downtime due to electrical faults.
• Excessive Level Detection: One of the primary functions of the Shaft Voltage and Current Monitor is to trigger alarms when voltage or current levels exceed predetermined thresholds. Excessive levels of shaft voltage or current could indicate potential hazards such as bearing damage or insulation degradation.
• Immediate Notification: Upon detecting abnormal levels, the monitor initiates alarm signals to alert operators or maintenance personnel. These notifications prompt timely intervention to address the underlying issues and prevent further escalation.
• Alarm Function Verification: The monitor includes built-in test circuits designed to verify the functionality of alarm systems. Periodic testing ensures that alarms are functioning correctly and can reliably alert personnel to potential risks.
• Wiring Continuity Checks: Additionally, the monitor conducts continuity tests on wiring connections leading to brush assemblies mounted between the turbine and generator. Ensuring uninterrupted electrical pathways is essential for reliable data transmission and effective monitoring.

WOC is happy to assist you with any of your GE requirements. Please contact us by phone or email for pricing and availability on any parts and repairs.

FREQUENTLY ASKED QUESTIONS

What is DS200LSTQF1ACA?
It is a Software PROM developed by GE

What happens if the EPROM fails?
If it fails, the control system might lose its firmware, leading to operational issues or a complete shutdown of the turbine system. However, such failures are rare due to the robust nature of EPROM. Regular maintenance checks and having backup components can mitigate this risk.

How can changes to control constants be made if EPROM is used?
Control constants that may need frequent updates, such as gains and offsets, are typically stored in EEPROM or other more easily reprogrammable memory types. EPROM stores the more static firmware, while EEPROM handles dynamic configuration data.