Name: GE IS200EDCFG1ADC Exciter DC Feedback Board for Mark VI Systems
Brand: General Electric
SKU: IS200EDCFG1ADC
Availability: InStock

Product Overview

The GE IS200EDCFG1ADC functions as a dedicated exciter DC feedback board within GE Mark VI turbine control systems. This printed circuit board monitors and conditions DC signals from generator excitation systems for accurate control and protection. We engineered the IS200EDCFG1ADC to provide reliable feedback of field voltage and current in power generation applications.

Technical Specifications

Parameter	Specification
Manufacturer	General Electric (GE)
Model Number	IS200EDCFG1ADC
Product Type	Exciter DC Feedback Board
Series	Mark VI / Mark VIe Turbine Control
Board Type	Printed Circuit Board Assembly
Input Signals	DC voltage, DC current (from exciter field)
Voltage Input Range	0-1000 VDC (typical, with divider)
Current Input Range	0-10 A DC (with external shunt)
Output Signals	±10 VDC, 4-20 mA to control system
Accuracy	±0.5% of full scale
Isolation	2500 VAC field-to-logic
Board Layers	8-layer, high-density interconnect
Board Material	FR-4 glass epoxy, UL 94V-0
Component Count	Approximately 200 components
Power Supply	±15 VDC, +5 VDC from backplane
Power Consumption	3 W typical
Operating Temperature	-30°C to 65°C (-22°F to 149°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Humidity Range	5% to 95% non-condensing
Dimensions (H x W x D)	230 mm x 160 mm x 25 mm (approx.)
Weight	0.4 kg (0.88 lbs)
Mounting	Rack-mounted in Mark VI control chassis
Connectors	2 x 50-pin DIN 41612 backplane, test points
LED Indicators	Power OK, signal present, fault
Certifications	CE, UL, CSA for power generation equipment

Key Features and Benefits

Precision DC Signal Conditioning: The IS200EDCFG1ADC accurately measures high-voltage DC signals from generator fields. It scales these signals to safe levels for the control system while maintaining excellent accuracy.
High-Voltage Isolation: With 2500 VAC isolation, this board protects sensitive control electronics from dangerous field potentials. Consequently, maintenance personnel remain safe and equipment damage prevents during faults.
Multiple Feedback Channels: The board processes both field voltage and current signals simultaneously. Therefore, the excitation control system has complete information for precise voltage regulation.
Rugged Construction: GE designed this board for the harsh environment of power plants. It withstands temperature extremes, vibration, and electrical noise common in turbine halls.
Comprehensive Test Points: Front-accessible test points allow technicians to verify signals during commissioning. You quickly confirm proper operation without disturbing field wiring.

Detailed Functional Description

The primary function of the GE IS200EDCFG1ADC involves conditioning high-voltage DC signals from generator excitation systems. Specifically, it accepts voltage from the generator field through precision voltage dividers. It also accepts current signals from field shunts and converts them to proportional voltages. The board then filters, scales, and isolates these signals before sending them to the Mark VI control system. The control system uses this feedback to regulate excitation and maintain generator terminal voltage. Additionally, the board provides overvoltage and overcurrent protection for the control electronics.

Input Signal Processing

We designed the IS200EDCFG1ADC with flexible input stages for various generator types:

Signal Type	Input Range	Processing	Output to Control
Field Voltage	0-1000 VDC	Precision divider, isolation amp	0-10 VDC scaled
Field Current	0-10 ADC	Shunt input, isolation amp	4-20 mA or 0-10 VDC
Auxiliary Input	0-10 VDC	Buffer, filtering	Direct or scaled

The board includes low-pass filtering to remove noise and prevent aliasing in the control system.

Protection and Safety Features

The GE IS200EDCFG1ADC incorporates multiple protective features:

Input Overvoltage Protection: Transient suppressors clamp voltages above safe levels
Isolation Barriers: Optical and magnetic isolation prevent fault propagation
Surge Withstand: Meets IEEE surge withstand capability (SWC) standards
Fault Detection: On-board monitoring reports signal loss or out-of-range conditions
Redundant Paths: Critical signals often have dual processing paths

Installation and Configuration

Engineers install the IS200EDCFG1ADC in designated slots within Mark VI control racks. The process involves:

Verifying the board revision matches system requirements
Inserting the board into guided card guides
Engaging backplane connectors firmly
Securing with front-panel screws
Connecting field wiring to termination panels
Configuring scaling and alarms in the control software

Proper configuration ensures accurate feedback and appropriate system response.

Mechanical Details

The GE IS200EDCFG1ADC features the standard Mark VI Eurocard form factor. Its front panel provides:

Test points for voltage, current, and power supply monitoring
LED indicators for power and signal status
Label with model number and revision
Captive mounting screws
Ejector handles for easy insertion/removal

The board includes a metal shield for electromagnetic compatibility in high-noise environments.

Compatibility Information

The IS200EDCFG1ADC operates with the following GE systems:

Mark VI Turbine Control Systems
Mark VIe Excitation Control Systems
EX2100 Excitation Systems (with appropriate interface)
Compatible with various generator field configurations

Common Industrial Applications

The GE IS200EDCFG1ADC serves critical feedback functions in power generation:

Application Area	Typical Use Case
Steam Turbine Generators	Field voltage and current feedback for excitation control
Gas Turbine Generators	Regulating generator terminal voltage
Hydroelectric Generators	Monitoring field conditions for protection
Industrial Generators	Providing feedback for automatic voltage regulators
Synchronous Condensers	Field control for reactive power compensation

Why Choose This Board?

Selecting the GE IS200EDCFG1ADC means choosing a critical component for reliable generator excitation control. This board accurately measures dangerous high-voltage signals and safely interfaces them with sensitive control electronics. Its robust isolation protects both equipment and personnel from electrical hazards. With precise signal conditioning, the excitation system maintains tight voltage regulation for stable generator operation. For Mark VI systems requiring exciter feedback, the IS200EDCFG1ADC delivers the accuracy and reliability essential for power generation.