Marathon Electric DVR 2000E - Section 3 • Functional Description; Section 3 Functional Description; Table of Contents

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S
ection
3
SECTION 3 • FUNCTIONAL DESCRIPTION
TABLE OF CONTENTS
SE
CTION
3
• FUNCTIONAL DESCRIPTION
............................................................................................
18
INTRODUCTION
..................................................................................................................................
18
DVR
®
2000E FUNCTION BLOCKS
.......................................................................................................
18
Analog Inputs
.................................................................................................................................
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Generator Voltage
...............................................................................................................................
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Phase B Line Current
..........................................................................................................................
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Field Voltage (V
FIELD
)
...........................................................................................................................
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Field Current (I
FIELD
)
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Analog (Auxiliary) Input
.......................................................................................................................
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Contact Input Circuits
....................................................................................................................
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Raise
...................................................................................................................................................
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Lower
...................................................................................................................................................
20
VAR/Power Factor Control (52J/K) Option
..........................................................................................
20
Parallel Generator Compensation (52L/M)
..........................................................................................
20
Communication Port
......................................................................................................................
20
Microprocessor
..............................................................................................................................
20
Power Input Stage
.........................................................................................................................
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Power Supply
.................................................................................................................................
20
Power Amplifi er Stage
...................................................................................................................
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Front Panel Indicators
....................................................................................................................
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Front Panel Switches
.....................................................................................................................
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Relay Output
..................................................................................................................................
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DVR
®
2000E OPERATING FEATURES
................................................................................................
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Operating Modes
...........................................................................................................................
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Automatic Voltage Regulation Mode
...................................................................................................
21
Manual Mode
.......................................................................................................................................
21
VAR Control Mode (Optional)
..............................................................................................................
21
Power Factor Control Mode (Optional)
................................................................................................
21
Reactive Droop Compensation
......................................................................................................
22
Underfrequency
.............................................................................................................................
22
Generator Underfrequency
..................................................................................................................
22
Engine Unloading
................................................................................................................................
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Protection
......................................................................................................................................
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Overexcitation Shutdown (Field Voltage)
.............................................................................................
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Generator Overvoltage Shutdown
.......................................................................................................
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DVR
®
2000E Overtemperature Shutdown
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Loss of Generator Sensing Shutdown
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Overexcitation Limiting (Field Current)
................................................................................................
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Crowbar Shutdown
..............................................................................................................................
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Generator Soft Start
......................................................................................................................
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Figures
Figure 3-1. Simplifi ed Block Diagram
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