GE 151X1235DB15SA01 16DI + 16DO Digital I/O
The EX2100e control is GE’s
fourth generation digital
excitation control system.
There are over 4.000 first,
second, and third generation
GEdigital excitation controls
operating in 60 countries
throughout the world.
Refer to GEA-S1301. EX2100e
Excitation Control 35 A and
120 A Regulator Systems
Product Description.
The EX2100e Excitation Control is GE’s latest state-of-the-art control for both new and
retrofit steam, gas, and hydro generators. The control hardware and software design is
closely coordinated between GE’s system and controls engineering to ensure delivery of a
true system solution. Integration between the EX2100e control, Mark* VIe control,
Mark VI Integrated Control System (ICS), LS2100e Static Starter, and human-machine
interface (HMI) is seamless. For stand-alone retrofit applications, integration with
customer distributed control systems (DCS) through ModBus
Ethernet is supported.
The EX2100e control system is available in several configurations to provide flexibility
for full static and regulator control. The Thyristor silicon-controller rectifier (SCR)-based
systems use cells sized at 42. 53. 77. and 100 mm to economically meet field current
requirements in static applications. The pulse-width modulated (PWM) systems use
Insulated Gate Bipolar Transistors (IGBTs) to provide up to 35 A or 120 A outputs for

151X1235DB15SA01
Regulator system applications. These systems can support the following applications:
• Static, potential source to 8000 A
• Static, compound source
• Alterrex* Regulator system
• Saturable Current Transformers/Power Potential Transformer (SCT/PPT) Regulator
• Brushless Exciter Regulator
• DirectCurrent (dc) Rotating Exciter Regulator
AcronymsandAbbreviations
AVR AutomaticVoltageRegulator
COI ControlOperatorInterface
CSLA CompactPCIHigh-speedSerialLinkExpansionBoard
CT CurrentTransformer
DCS DistributedControlSystem
DPM Dual-portmemory
DRAM DynamicRandomAccessMemory
EAUX ExciterAuxiliaryI/OInterfaceBoard
EBAC ExciterBridgeACFeedbackBoard
EBRG ExciterBridgeInterfaceBoard
ECTX ExciterCTExpansionBoard
EDEX ExciterDe-ExcitationControlBoard
EDFF ExciterDCFannedFeedbackBoard
EDIS ExciterPowerDistributionBoard
EGD EthernetGlobalData
ESYS EX2100eSystemInterfaceBoardforCustomerI/O
EXAM ExciterAttenuationModule
FCR FieldCurrentRegulator
FGD FieldGroundDetector
FPGA FieldProgrammableGateArray
FVR FieldVoltageRegulator
HMI Human-machineInterface
HSLA High-speedSerialLinkInterfaceBoardforHostApplicationBoards
ICS IntegratedControlSystem
IGBT InsulatedGateBipolarTransistor
I/O Inputandoutput
LAN Localareanetwork
LCD LiquidCrystalDisplay
LVD LowVoltageDirective
MTBFO MeanTimeBetweenForcedOutage
PCM PowerConversionModule
PMG PermanentMagnetGenerator
PPT PowerPotentialTransformer
PSS PowerSystemStabilizer
PT PotentialTransformer
PTFD PotentialTransformerFuseFailureDetection
PWM Pulse-widthModulator
RC Resistor/CapacitorCircuit
RCC ReactiveCurrentCompensation
SCL StatorCurrentLimit
SCR Silicon-controlledRectifier
SCT SaturableCurrentTransformer
SOE SequenceofEvents
SWC SurgeWithstandCapability
TMR TripleModularRedundant
UBC UniversalBuildingCode
UCSB UniversalControllerStand-aloneMicroprocessor
UDH UnitDataHighway
UEL UnderexcitationLimitcontrol
VAR VoltAmperesReactive
V/Hzlim VoltsperHertzLimite