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DS3800DSCA1B - Speed Control Regulator Auxiliary Card is available in stock which ships the same day.
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SPECIFICATIONS:
Part Number: DS3800DSCA1B
Manufacturer: General Electric
Series: Mark IV
Product Type: Speed Control Regulator Auxiliary Card
Signal Type: Analog and Digital
Input Signal Range: ±10 VDC
Power Supply Voltage: ±15 VDC
Board Size: 15.7 cm High x 18.5 cm
Storage Temperature: -40°C to +85°C
Repair: 3-7 Days
Weight: 1.00 lbs
Country of Origin: USA
Availability: In Stock
FUNCTIONAL DESCRIPTION:
DS3800DSCA1B is a Speed Control Regulator Auxiliary Card manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Gas turbine control systems. This board functions as an auxiliary unit to the main speed control loop, assisting in the precise regulation of turbine speed and load sharing by processing analog and digital signals related to shaft speed and system demand. It works closely with the primary regulator board by filtering and conditioning input signals, ensuring stable and accurate control logic. The card incorporates various integrated circuits, resistors, capacitors, and potentiometers to fine-tune parameters and enhance redundancy, reliability, and fault-tolerance in turbine operation.
INSTALLATION:
The card is equipped with a backplane connector and typically includes a front-edge extractor handle for safe handling and removal. Before installation, technicians should ensure the control system is fully powered down and properly grounded. Electrostatic discharge (ESD) precautions must be observed during handling. The card should be inserted carefully into its respective slot until it is fully seated in the backplane connector. Secure any mounting screws or latches as specified in the system manual. After physical installation, the board should be tested in diagnostic mode to confirm communication and signal functionality with other control modules.
OPERATION:
The DS3800DSCA1B supports the operation of the turbine speed control subsystem by assisting in data acquisition, signal conditioning, and auxiliary feedback processing. It continuously monitors system parameters such as turbine shaft speed, fuel demand, and control loop feedback. The board ensures that these signals are transmitted without noise or delay to the main control processor. During load changes or speed adjustments, the auxiliary card contributes to smooth transitions by regulating signal gain and preventing overshoot or instability. If the board detects abnormalities or if diagnostics indicate a failure, it will trigger alerts through the system alarm architecture, prompting operators to intervene or switch to redundant paths if configured.
WOC offers the largest inventory of replacement parts for the GE Speedtronic Mark IV control system. We provide both new and refurbished boards, all backed by a reliable warranty. In addition to part supply, we offer expert repair services for faulty boards. Our experienced team is available 24/7 to support your OEM and automation needs. For pricing, availability, or repair inquiries, please contact our team by phone or email. We are here to help.
What type of signals does the auxiliary card handle?
The auxiliary card is designed to manage a mix of analog and digital input/output signals, primarily related to turbine speed, frequency feedback, and load control. These include signals from magnetic pickup sensors (MPUs), tachometers, and feedback loops from the main control unit. The card conditions and buffers these inputs to ensure the stable performance of the speed control system.
What kind of connectors are used on this card?
It uses edge connectors that interface directly with the control system’s backplane. These connectors ensure secure electrical contact with the turbine control cabinet's motherboard and support multiple high-density signal channels. The card is typically keyed to prevent incorrect installation, and the gold-plated contact fingers ensure durability and low-resistance connections over extended use in high-vibration environments.
What is the standard operating voltage of this card?
The card typically operates using low-voltage ±15V or +24V DC, depending on the board revision. Power is supplied by the internal Mark IV power distribution network. Voltage regulation on the card is managed by onboard IC regulators, which supply precise reference voltages for analog circuits and logic ICs. Incorrect voltage input or grounding issues can result in malfunction or permanent board damage.
