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IS200FCGEH1A - LCI Control and Gating-Exciter Board is available in stock which ships the same day.
IS200FCGEH1A - LCI Control and Gating-Exciter Board comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS:
Part Number: IS200FCGEH1A
Manufacturer: General Electric (GE)
Control System Series: Speedtronic Mark VI / LS2100 Static Starter Control
Functional Acronym: FCGE
Product Type: LCI Control and Gating-Exciter Board
Primary Function: Signal Interface, Conditioning, and Gating Control
Firing Command Outputs: 6 Dedicated Channels (SCR Bridge)
Analog Voltage Inputs: 6 Channels
System Clock: Integrated (Relative Clock Rate: 1/16 VMEbus Rate)
VMEbus Connectors: Two, 96-pin Connectors (P1 Backplane Interfacing)
Ribbon Cable Connectors: Two, 20-pin Connections (Factory Test Only)
Front Faceplate Interfacing: Access Openings for 28 TP Test Points
LED Status Indicators: Two Onboard LEDs (Active and IMOK)
Repair Time: 3-5 Days
Availability: In Stock
Weight: 0.26 kg (0.57 lbs)
Country of Origin: United States
Manual: GEI-100233
IS200FCGEH1A is an LCI Control and Gating-Exciter Board manufactured and designed to function within General Electric's Speedtronic Mark VI turbine control framework and LS2100 Static Starter platforms. The IS200FCGE board (FCGE) serves as a critical interface between the Load Commutated Inverter (LCI) drive and the motor field exciter, ensuring reliable communication and signal processing within the system. Its primary functions include relaying cell gating commands from the LCI processor board to the exciter and conditioning voltage and current feedback signals from the exciter bridge before transmitting them back to the processor board for monitoring and control. Designed to support efficient drive operation and accurate feedback management, the FCGE board is installed in a VMEbus rack located inside the LCI control cabinet.
VMEbus INTERFACE:
The FCGE environment consists of an FCGE board and a VMEbus host processor. The FCGE is compatible with the VME (A24/D16) specification both electrically and physically. (See the ANSI/VITA 1-94 manual for VMEbus guidelines.) All standard VMEbus signals are through the P1 connector to the VMEbus backplane. The FCGE decodes most of the 24 address bits for internal addressing. The FCGE interfaces with the host processor, other LCI boards, and the exciter through the P2 connector. The exciter connects directly to the VMEbus backplane through a 34
SYSTEM FUNCTIONS:
Firing Commands: The FCGE includes drivers for six firing command outputs to the exciter. Each output corresponds to one of the six SCR (silicon-controlled rectifier) cell strings in the exciter bridge. These drivers are controlled by the LCI processor, which can turn on up to six at one time.
Heartbeat: Onboard heartbeat circuitry is enabled when the VMEbus host first writes to the FCGE. If the heartbeat is within design limits, the board’s green Active LED is on. If this heartbeat check fails, gating is disabled, and this LED turns off.
EXCITER FEEDBACK STATUS:
CURRENT FEEDBACK: The FCGE receives a current feedback signal that is a composite of output from current transformers on the power bridge’s input phases A and C. The FCGE senses this signal differentially and conditions it at an onboard VCI (voltage-controlled oscillator), producing current feedback.
VOLTAGE FEEDBACK: The FCGE receives six analog voltage inputs on its P2 connector. These signals are attenuated in the exciter’s power bridge, which has different connections for the ac switch and dc bridge configurations. The FCGE’s six VCOs condition these inputs to produce voltage feedback.
RIBBON CABLE STATUS: When the ribbon cable between the VMEbus backplane and the exciter is connected, FCGE pin P2-A11 is low (at logic 0). The FCGE monitors this input. If the voltage is above the common level, the FCGE sets the status feedback signal to the host processor, indicating that the cable is disconnected.
WHY PARTNER WITH WORLD OF CONTROLS
World of Controls specializes in component fulfillment, keeping aging power assets and turbine systems fully operational with a verified stock of legacy GE hardware. Each certified IS200FCGEH1A printed circuit board undergoes extensive simulation within active Mark VI and LS2100 test rigs. We rigorously verify the calibration of all six analog input paths, test VMEbus backplane data throughput, and inspect SCR gating driver response curves under load. WOC provides these premium boards in both UNUSED and REBUILT profiles to clear your operational path.
What is the GE IS200FCGEH1A?
The IS200FCGEH1A is an LCI Control and Gating-Exciter Board designed and manufactured by General Electric for Mark VI and LS2100 control topologies. It processes precision voltage feedback parameters from the motor field exciter bridge and translates software timing matrices into hardwired gating commands to synchronize inverter commutation safely.
Can the IS200FCGEH1A detect active SCR cell conduction trends automatically?
Yes, the module features specialized voltage-based comparator networks built directly into its hardware configuration. These components read loop feedback parameters to detect cells' conduction states and track the timing and status of the SCR strings to log performance anomalies.
What is the function of the two 20-pin ribbon cable connections on the board?
The two 20-pin ribbon cable interfaces located on the board surface are allocated strictly for OEM manufacturing development and factory bench testing. They are completely bypassed and do not carry active control telemetry once the board is mounted in the VME field rack.
How is the physical mounting and slot orientation of the board handled?
The IS200FCGEH1A is built to a standard plug-in circuit board form factor designed to slot into a standard Mark VI VME chassis. It secures into the backplane using dual 96-pin VMEbus connectors (including the P1 port), which route logic, supply power and data across the control module bus.
How does WOC verify a replacement IS200FCGEH1A board before delivery?
Every board is installed inside a live LCI processor test bay. We apply multi-step analog feedback inputs to confirm matching sensor calibration, measure pulse symmetry across all six gate outputs on a digital oscilloscope, and cycle the internal clocks to confirm the board functions flawlessly under load.
