Marathon Electric DVR 2000E Installation, Operation And Maintenance Manual
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Marathon Electric DVR 2000E Installation, Operation And Maintenance Manual

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2000 E
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Installation, Operation,
and Maintenance Manual

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Mark Selman
May 13, 2025

Is there a direct replacement part available to Replace. A DVR 2000?

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Mr. Anderson
May 21, 2025

Yes, the direct replacement part for the Marathon Electric DVR 2000E is the Marathon DVR2400.

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Summary of Contents for Marathon Electric DVR 2000E

  • Page 1 2000 E ® Installation, Operation, and Maintenance Manual...

  • Page 3: Section 1 • General Information 4

    INTRODUCTION This manual provides information concerning the operation and installation of the DVR 2000E, Digital Voltage ® Regulator. To accomplish this, the following is provided: • General Information and Specifications • Human-Machine Interface • Functional Description • Installation • Software for Windows Operating System •...
  • Page 4 CONTENTS A table of contents in the front of each section provides detailed information for that section. The sections in this manual are as follows. Section 1 General Information .......................3 Section 2 Human-Machine Interface......................7 Section 3 Functional Description ......................17 Section 4 Installation..........................25 Section 5 Marathon-DVR...
  • Page 5 SECTION 1 • GENERAL INFORMATION TABLE OF CONTENTS ection SECTION 1 • GENERAL INFORMATION ....................4 GENERAL..............................4 FEATURES ............................4 SPECIFICATIONS ..........................4 Operating Power ..........................5 Generator Voltage Sensing......................5 Generator Current Sensing ......................5 Contact Input Circuits ........................5 Common Alarm Output........................5 Field Output .............................5 AVR Operating Mode........................5 FCR (Manual) Operating Mode .......................5 VAR Operating Mode (Optional) ......................5...

  • Page 6: General

    SECTION 1 • GENERAL INFORMATION GENERAL ection The DVR 2000E is an electronic, solid-state, microprocessor-based control device. The DVR 2000E regulates the ® ® output voltage of a brushless, ac generator by controlling the current into the generator exciter field. Input power to the DVR ®...

  • Page 7: Operating Power

    Operating Power Underfrequency (V/Hz) Underfrequency (V/Hz) Characteristic: Slope from 1 to 3PU is adjustable in Single-Phase: 120 to 300 Vac 0.01 increments. Frequency Range: 225 to 325 Hz Range: 40 to 65 Hz Burden: 350 VA Increment: 0.01 Hz Terminals: 3, 4 ection FCR (Manual) Operating Mode...

  • Page 8: Soft-Start Function

    Soft-Start Function Environment Operating Temp.: -40°C to +70°C (-40°F to Time Adjust Range: 2 to 120 seconds +158°F) Increment: 1 second Storage Temp.: -40°C to +85°C (-40°F to +185°F) Analog (Auxiliary) Input Voltage Range: -3 Vdc to +3 Vdc ection Type Tests Setpoint Range: -30% to +30% shift...

  • Page 9: Table Of Contents

    SECTION 2 • HUMAN-MACHINE INTERFACE TABLE OF CONTENTS SECTION 2 • HUMAN-MACHINE INTERFACE ..................8 GENERAL............................8 ection FRONT PANEL CONTROLS AND INDICATORS ................8 INITIAL ADJUSTMENTS ........................ 9 MAKING SETTINGS CHANGES ....................10 Front Panel Operation......................10 Setting Level Indication......................11 COMMUNICATION PORT ......................

  • Page 10: Section 2 • Human-Machine Interface

    SECTION 2 • HUMAN-MACHINE INTERFACE GENERAL The DVR 2000E human-machine interface (HMI) consists of front panel controls and indicators and a rear panel ® communication port. FRONT PANEL CONTROLS AND INDICATORS ection ® 2000E front panel controls and indicators consist of 12 red LEDs and three pushbuttons. Figure 2-1 illustrates the front panel controls and indicators of the DVR ®...

  • Page 11: Initial Adjustments

    Table 2-2. DVR ® 2000E Front Panel Mode Status Indicator Descriptions Indicator Description This LED blinks rapidly when the Overexcitation Protection feature is enabled and the field voltage exceeds the setpoint (80 V default) for 15 seconds. The Overexcitation LED #12 2000E will shutdown when an overexcitation condition is detected.

  • Page 12: Making Settings Changes

    After the initial adjustments are made, shutdown the generator and connect the remaining regulator leads. The generator may be started and final adjustments may be performed on the regulator. MAKING SETTINGS CHANGES The following paragraphs describe how the HMI is used to make setting changes. Front Panel Operation The LEDs indicate control mode and status conditions and are also used when adjusting settings at the front panel.

  • Page 13: Setting Level Indication

    1 - 3 Phase This LED blinks slowly when selecting single or three phase sensing via the front panel Sensing push buttons. When in this adjustment mode, LED #1 is on if single phase sensing is LED #2 selected, LED #3 is on if three phase sensing is selected. Coarse Voltage This LED blinks slowly when the “Coarse Voltage”...

  • Page 14: Table 2-6. Manual Mode (On/Off) Select

    Table 2-6. Manual Mode (On/Off) Select Manual Mode On/Off – LED 3 Blinking Slowly MODE ection Table 2-7. Manual Mode (If – Limit) Adjustment Ranges Manual Mode Adjust – LED 4 Blinking Slowly Adjustment Range: 0 to 3 Adc Increment: 0.01 Adc Minimum Value Maximum Value 2.75...

  • Page 15: Table 2-9. Var Control Adjustment Ranges

    Table 2-9. VAR Control Adjustment Ranges * VAR Control Adjust – LED 6 Blinking Slowly Maximum Adjustment Range: −100% (absorb) to +100% (generate) Increment: 1.0% Minimum Value † Maximum Value † ection -100 * VAR/PF control is available only on DVR 2000EC.

  • Page 16: Table 2-11. Underfrequency Adjustment Ranges

    Table 2-11. Underfrequency Adjustment Ranges Underfrequency Adjust – LED 7 Blinking Slowly Maximum Adjustment Range: 40 to 65 Hz Increment: 0.1 Hz Minimum Value Maximum Value 63.0 65.0 60.9 62.9 58.8 60.8 56.7 58.7 54.6 56.6 52.5 54.5 ection 50.5 52.4 48.4 50.4...

  • Page 17: Table 2-13. Stability Range Selection Settings

    Table 2-13. Stability Range Selection Settings Stability Range Select – LED 9 Blinking Slowly Adjustment Range per LED: 1 Frame/Poles Range Selected Programmable 1,000/6 740/6 ection 1,000/4 740/4 570/4 430/4 360/4 * Note: For 280 Frame generators see Section 8, Set-Up From the Computer. Table 2-14.

  • Page 18: Communication Port

    COMMUNICATION PORT A communication port is located on the rear panel and consists of a female RS-232 (DB-9) connector. The communication port serves as an interface for programming (setup) of the DVR 2000E. Figure 2-2 ® illustrates the location of the communication port. Programming requires a standard 9-pin serial communication cable...

  • Page 19: Table Of Contents

    SECTION 3 • FUNCTIONAL DESCRIPTION TABLE OF CONTENTS SECTION • FUNCTIONAL DESCRIPTION ....................18 INTRODUCTION..........................18 2000E FUNCTION BLOCKS.......................18 ® Analog Inputs..........................18 Generator Voltage ..........................19 Phase B Line Current ..........................19 Field Voltage (V )...........................19 FIELD Field Current (I ) ..........................19 FIELD Analog (Auxiliary) Input ........................19 Contact Input Circuits ........................19 ection Raise ..............................20...

  • Page 20: Functional Description

    SECTION 3 • FUNCTIONAL DESCRIPTION INTRODUCTION This section describes how the DVR 2000E functions and explains its operating features. To ease understanding, ® ® 2000E functions are illustrated in the block diagram of Figure 3-1. A detailed description of each function block is provided in the paragraphs under the heading of DVR 2000E Function Blocks.

  • Page 21: Generator Voltage

    Generator Voltage Generator Voltage Generator voltage is monitored at terminals E1 (A-phase), E2 (B-phase), and E3 (C-phase). Nominal voltages of up to 600Vac may be sensed at these terminals. Voltage applied to these inputs is scaled and conditioned before being applied to the input of the ADC. The voltage signal from phase C and A (V ) of the generator is used by the ADC to calculate the rms value of generator voltage across phases C and A.

  • Page 22: Section 2 • Human-Machine Interface

    Raise Closing a contact across terminals 6U and 7 causes the active operating setpoint to increase. This function is active as long as the contact is closed. Lower Closing a contact across terminals 6D and 7 causes the active operating setpoint to decrease. This function is active as long as the contact is closed.

  • Page 23: Front Panel Switches

    Front Panel Switches Changes to settings can be made at the front panel using the three pushbutton switches. These push-buttons are labeled Select, Up, and Down. Section 2, Human-Machine Interface provides more information about the front panel switches. The setting is saved when the “SELECT” button is pressed. If no button is pressed for a period of one minute, the regulator saves the new settings and exits the adjustment mode.

  • Page 24: Reactive Droop Compensation

    Power Factor Control Mode (Optional) Power Factor Control Mode (Optional) In Power Factor Control mode, the DVR 2000E(C) maintains generator power factor at a set level when paralleling ® with an infinite bus. The DVR 2000E(C) calculates generator power factor using the sensed generator output ®...

  • Page 25: Protection

    Protection The DVR 2000E has the six protective functions listed below: ® • Overexcitation shutdown • Generator overvoltage shutdown • overtemperature shutdown overtemperature shutdown ® ® ® • Loss of generator sensing shutdown • Overexcitation limiting • Crowbar shutdown Each function, except Crowbar Shutdown, has a corresponding front panel indicator that lights when the function is active.

  • Page 26: Crowbar Shutdown

    Crowbar Shutdown The Crowbar Shutdown Circuit protects the generator rotor from overcurrent damage resulting from a shorted 2000E power switch. During operation, if the field voltage exceeds the setpoint and the power stage receives ® no gating pulses for 1.5 seconds, the Crowbar Circuit activates and places a short-circuit across the DVR 2000E ®...
  • Page 27 SECTION 4 • INSTALLATION TABLE OF CONTENTS SECTION 4 • INSTALLATION........................26 GENERAL............................26 MOUNTING ............................26 CONNECTIONS ..........................29 2000E Terminations ......................29 ® Generator Voltage Sensing Inputs ....................30 Phase B Line Current Sensing Input .....................30 Raise and Lower Contact Inputs ....................30 VAR/Power Factor Control Contact Input..................30 Parallel Generator Compensation ....................30 Analog (Auxiliary) Adjust .......................30 Power Supply Inputs........................30...

  • Page 28: Section 4 • Installation

    SECTION 4 • INSTALLATION GENERAL The DVR 2000E is delivered in a sturdy carton to prevent shipping damage. Upon receipt, check the part number ® against the requisition and packaging list for agreement. Inspect for damage, and if there is evidence of such, immediately file a claim with the carrier and notify your sales representative or a sales representative at Marathon Electric.
  • Page 29 ection Figure 4-1. DVR 2000E Dimensions with and without cover ®...
  • Page 30 ection Figure 4-2. Cutout and Drilling Dimensions...

  • Page 31: Connections

    CONNECTIONS 2000E connections are dependent on the application. Incorrect wiring may damage the unit. ® NOTE Be sure that the DVR 2000E is hard-wired to earth ground with no smaller than 12 AWG copper ® wire attached to the ground terminal on the rear of the unit case. When the unit is configured in a system with other devices, it is recommended to use a separate lead to the ground bus from each device.

  • Page 32: Generator Voltage Sensing Inputs

    Generator Voltage Sensing Inputs The generator voltage sensing terminals are labeled E1, E2, and E3. A single-phase sensing connection is obtained by connecting the C-phase sensing input to terminals E2 and E3. Table 4-2 lists the terminal assignments for three-phase and single-phase generator voltage sensing. Table 4-1.

  • Page 33: Chassis Ground

    Chassis Ground The chassis ground terminal is labeled GND. Power (Field) Output The field output terminals for connection to the generator exciter field are labeled F+ and F-. Relay Output The common alarm relay output contact may be accessed at the terminals labeled AL1 and AL2. The relay output is normally open.

  • Page 34: Dvr

    Figure 4-5. Personal Computer to DVR 2000E Connections ® 2000E Connections for Typical Applications ® Figures 4-6 through 4-9 illustrate typical applications using the DVR 2000E. Figure 4-6 shows an application ® where the DVR 2000E is connected for three-phase voltage sensing. Figure 4-7 shows an application with single- ®...
  • Page 35 ection Figure 4-6. Typical Connections with ABC Rotation and Three-Phase Sensing...
  • Page 36 ection Figure 4-7. Typical Connections with ABC Rotation and Single-Phase Sensing...
  • Page 37 ection Figure 4-8. Typical Connections to a Single-Phase Generator...
  • Page 38 Figure 4-9. Cross-Current (Reactive Differential) Connections for Two Generators ection LOAD ENABLE CONTACT Figure 4-10. Cross-Current (Reactive Differential) Connections for Three or More Generators...

  • Page 39: Preliminary Setup

    PRELIMINARY SETUP Use caution when working around the rear of the DVR 2000E. ® Dangerous voltage levels are present at the exposed heatsinks when the unit is energized. Before starting the generator and DVR 2000E for the first time, proceed as follows. ®...
  • Page 40 2000E with a PC, which requires special software. The software ® and instructions can be downloaded from the Marathon Electric website at www.marathonelectric.com. Section 5 of this manual appears in its entirety within the PDF file for this manual (Publication GPN019), which is also available from our website.

  • Page 41: Platform Platform

    2000E with a Palm® Pilot (PDA), which requires special ® software. The software and instructions can be downloaded from the Marathon Electric website at www.marathonelectric.com. Section 6 of this manual appears in its entirety within the PDF file for this manual (Publication GPN019), which is also available from our website.
  • Page 42 SECTION 7 • MAINTENANCE AND TROUBLE- SHOOTING TABLE OF CONTENTS SECTION 7 • MAINTENANCE AND TROUBLE-SHOOTING ..............41 PREVENTATIVE MAINTENANCE .......................41 TROUBLESHOOTING .........................41 Generator Voltage Does Not Build....................41 Low Generator Output Voltage ......................42 High Generator Output Voltage .....................42 Poor Voltage Regulation ........................43 Generator Output Unstable (Hunting)....................43 OVEREXCITATION SHUTDOWN Indicator Is Annunciating ............44 LOSS OF GENERATOR SENSING Indicator Is Annunciating ............44...

  • Page 43: Section 7 • Maintenance And Trouble-Shooting

    2000E units are manufactured using state-of-the-art, ® ® surface-mount technology. As such, Marathon Electric recommends that no repair procedures be attempted by anyone other than Marathon Electric personnel. TROUBLESHOOTING If you do not get the results that you expect from the DVR 2000E, first check the programmable settings for...

  • Page 44: Low Generator Output Voltage

    If the soft start settings are incorrect, adjust the settings. If the soft start settings have no effect, proceed to Step 8. Step 8. Replace the DVR 2000E unit. ® If replacing the DVR 2000E unit does not correct the malfunction, then the generator is defective. ®...

  • Page 45: Poor Voltage Regulation

    If the sensing potential transformer is correct, proceed to Step 3. Step 3. High generator output voltage may occur when operating in droop mode with a capacitive load. If the high voltage condition is not caused by the droop function, proceed to Step 4. Step 4.

  • Page 46: Overexcitation Shutdown Indicator Is Annunciating

    OVEREXCITATION SHUTDOWN Indicator Is Annunciating Step 1. Verify that the field overvoltage setpoint is adjusted properly. If not properly adjusted, readjust the field overvoltage setpoint. If properly adjusted, proceed to Step 2. Step 2. Check for generator overloading. If the generator is operating with a larger than rated load, shed load. If the generator is operating with a rated or less than rated load, proceed to Step 3.

  • Page 47: Underfrequency Active Indicator Is Annunciating

    Step 4. Replace the DVR 2000E. ® If replacing the DVR 2000E does not correct the malfunction, proceed to Step 5. ® Step 5. Refer to the generator manual. Generator is defective. UNDERFREQUENCY ACTIVE Indicator Is Annunciating Step 1. Verify that the generator is operating at rated speed. If the generator is not operating at rated speed, adjust the generator speed.
  • Page 48 SECTION 8 • SET-UP PROCEDURES TABLE OF CONTENTS SECTION 8 • SET-UP PROCEDURES ......................47 SET-UP From the Front Panel......................47 SET-UP From the Computer ........................50 SET-UP For Paralleling ........................53 ection...

  • Page 49: Section 8 • Set-Up Procedures

    SECTION 8 • DVR 2000E VOLTAGE REGULATOR ® SET-UP FROM THE FRONT PANEL PROCEDURE The regulator must be powered from an external source into terminals 3 and 4. This power can be from the generator PMG with the engine running or a 120 Vac wall outlet. Ground the regulator with the ground terminal. No other wires should be connected to the regulator at this time.
  • Page 50 Press the ‘SELECT’ button one time. LED 3, ‘Manual Mode On/Off’ should now be blinking. Use the ‘UP’ button to move the steady LED to ‘2’ for ‘Manual Mode’ On. Note: For the first time start up of the generator, the ‘Manual Mode’ should be turned on. This is important for higher voltage generators to insure connections are correct before damage is done.
  • Page 51 Press the ‘SELECT’ button to select LED 4, ‘Manual Mode Adj.’ Press the ‘UP’ button to increase the field current until LED 2 lights. This should increase the generator voltage a small amount. If everything is still okay, continue increasing the field current until the desired generator voltage is reached.

  • Page 52: Set-Up From The Computer

    SECTION 8 • DVR 2000E VOLTAGE REGULATOR ® SET-UP FROM THE COMPUTER FOR SINGLE UNIT OPERATION PROCEDURE The regulator must be powered from an external source into terminals 3 and 4. This power can be from the generator PMG with the engine running or a 120 Vac wall outlet. Before terminals 3 and 4 on the voltage regulator are connected to the PMG, the engine must be set for 1800 RPM for 60 Hz operation or 1500 RPM for 50 Hz operation.
  • Page 53 Note: If an ammeter is installed, it is recommended that the B phase CT be connected in series through the regulator CT1 and CT2 terminals. This will provide additional information on the ‘Metering’ screen that can be very useful for any troubleshooting. Click the ‘Settings’...
  • Page 54 Click on the ‘Control Mode’ button to change to ‘AVR’ mode (rectangular box to the right of ‘FCR’). The generator should be operating at the desired voltage. Note the field voltage in ‘Voltage (V)’ and field current in ‘Current (A)’ values for future reference. The ‘Field Current (A)’...

  • Page 55: Set-Up For Paralleling

    SECTION 8 • DVR 2000E VOLTAGE REGULATOR ® SET-UP FOR PARALLELING WITH THE COMPUTER PROCEDURE For generators to parallel properly certain conditions must be met. The governors must be set for the engine speed, response and load sharing to match all units. The regulators must be set to provide matching voltage, droop and response on all units.
  • Page 56 Marathon Electric Mfg. Corp. P.O. Box 8003 Wausau, WI 54402-8003 USA Phone: 715.675.3359 Fax: 715.675.8026 www.marathonelectric.com Printed in USA GPN019 03/06 5369J/10K/03-06/SL/BH...

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