GE DS200EXDEG1A DS200EXDEG1AEA Excitation Control Board

The GE DS200EXDEG1A DS200EXDEG1AEA excitation control board manages generator field regulation for Mark V systems. This board executes automatic voltage regulator (AVR) and power system stabilizer functions. You will find this excitation board in GE Mark V excitation control cabinets. Its high-performance design ensures stable generator voltage regulation.

Excitation Control Architecture

This excitation board uses a 100 MHz 32-bit RISC processor. Consequently, it handles complex AVR loops with sub-millisecond response times. The GE DS200EXDEG1A DS200EXDEG1AEA includes both analog and digital I/O for field monitoring. Moreover, onboard memory stores configuration parameters and fault logs. You can configure this board for various generator types.

Technical Specifications

Parameter	Value
Processor Speed	100 MHz
CPU Type	32-bit RISC
RAM Capacity	16 MB SDRAM
Flash Memory	8 MB (application storage)
Non-Volatile RAM	1 MB (retentive data)
Analog Inputs	8, 16-bit resolution
Analog Outputs	4, 12-bit resolution
Digital I/O	16, configurable
Field Voltage Input	0-600V DC (scaled)
Field Current Input	0-10V DC (from shunt)
Input Voltage	24V DC ±10%
Power Consumption	10W typical
Dimensions	260mm x 200mm x 40mm
Weight	0.85 kg (1.87 lbs)
PCB Layers	8
Onboard Components	1 CPU, 8 memory chips, 1 ADC, 4 DACs, 1 watchdog
Connector Count	6 (analog, digital, field, power, backplane, diagnostic)
Status Indicators	6 LEDs (run, fault, AVR active, manual, comm, power)
Energy Storage	2200 µF (power hold-up)
Watchdog Timeout	100 ms (software configurable)
Operating Temperature	0°C to +50°C
Storage Temperature	-20°C to +70°C

Field Regulation and Protection

The unit includes dedicated inputs for field voltage and current monitoring. Therefore, it provides complete excitation system control and protection. This board replaces the DS200EXDEG1AEA version without any program changes. Simply swap the boards and reload application code. GE designed this excitation board for single-slot installation. Hence, it fits directly into existing Mark V rack positions.

Eight PCB layers separate high-speed digital traces from analog signals. Six connectors handle all I/O, field, power, and diagnostic interfaces. The GE DS200EXDEG1A DS200EXDEG1AEA holds 2200 µF of capacitance for power hold-up. Accordingly, it survives brief power interruptions without resetting. Six status LEDs provide complete operational feedback.

Watchdog and Installation Guide

A hardware watchdog timer resets the processor if software stalls. The board logs watchdog events in non-volatile memory. The GE DS200EXDEG1A DS200EXDEG1AEA works with all GE Mark V excitation I/O modules. Always verify firmware revision compatibility before installation. Proper grounding of the chassis ensures noise-free processor operation.

The board includes a real-time clock with battery backup. This clock maintains accurate timestamps during power outages. The GE DS200EXDEG1A DS200EXDEG1AEA delivers reliable excitation control for generator systems. Installation requires careful handling of static-sensitive components. This board operates in non-condensing environments with adequate cooling.