DS3800NFCB1P1P - Firing Circuit Board

SPECIFICATIONS

Part Number: DS3800NFCB1P1P
Manufacturer: General Electric
Series: Mark IV
Product Type: Firing Circuit Board
Temperature 0 to 60oC
Availability: In Stock
Country of Manufacturer: United States (USA)

Functional Description

DS3800NFCB1P1P is a Firing Circuit Board developed by General Electric. It is a part of Mark IV series. It is responsible for controlling the gating signals of thyristors, SCRs (Silicon-Controlled Rectifiers), IGBTs, or other power semiconductors in systems like turbine controls, motor drives, and power converters. The Mark IV was the first Speedtronic model to use TMR (triple modular redundant) architecture, which included fault-tolerant two-out-of-three voting on important controls and protection parameters.

Features

• Gate Pulse Generation: Sends precisely timed pulses to trigger power semiconductors in a circuit.
• Synchronization with Control Signals: Ensures accurate timing for phase-controlled rectifiers, inverters, or AC voltage regulators.
• Overcurrent and Fault Protection: Includes short-circuit detection, overvoltage protection, and fault diagnostics to prevent system failures.
• Optical and Electrical Isolation: Uses opto-isolators or transformers to provide galvanic isolation, ensuring safe operation.
• Adjustable Firing Angles: Allows phase-angle control for applications like soft-start motor control or variable-speed drives.
• Temperature and; Load Compensation: Maintains optimal firing conditions under varying load and environmental conditions.
• Modular and Compact Design: Designed for easy integration into industrial control panels, GE Mark series turbine controls, and other applications.
• Precise Firing Control: Generates accurately timed gate pulses to fire thyristors or SCRs in turbine control applications.
• Phase Synchronization: Ensures correct timing for power conversion and turbine control.
• Diagnostic LEDs: Provides visual status indicators for troubleshooting and monitoring.
• Plug-and-Play Design: Standard GE Mark IV slot-based architecture for easy installation and replacement.

Common Issues & Troubleshooting Tips

• No Output or Erratic Operation: Check power supply connections and ensure proper gate pulse signals.
• Overheating or Component Damage: Inspect heat sinks, cooling systems, and component ratings.
• Synchronization Issues: Ensure the board is correctly aligned with the control system’s timing signals.
• Fault LED Indications: If applicable, refer to diagnostic LEDs for error codes.
• Replacement & Compatibility: When replacing, ensure voltage ratings, trigger pulse specs, and isolation requirements match the system needs.

WOC has the largest stock of Speedtronic control spares. Please contact our staff by phone or email for pricing and availability on any parts and repairs

FREQUENTLY ASKED QUESTIONS

What is DS3800NFCB1P1P?
It is a Firing Circuit Board developed by General Electrics.

What is the function of a firing circuit board?
A firing circuit board generates precise gate pulses to control power semiconductors, ensuring accurate power regulation and phase synchronization in turbine control, motor drives, and industrial power applications.

How does this board ensure safety and protection?
It includes Overcurrent protection to prevent short circuits, Voltage regulation to maintain a stable power supply, Optical/electrical isolation to reduce interference, and diagnostic LEDs for real-time troubleshooting.