Basler Electric DGC-2020 User Manual

INSTRUCTION MANUA L

FOR

DIGITAL GENSET CONTRO LL ER

DGC-2020

Publication: 9400200990
Revision: X Oct-14

INTRODUCTION

WARNING!

2020 settings. Instructions for changing passwords are

This instruction manu al pro vides inform ation abo ut the operation and inst allation of the DGC-2020 Digital
Genset Controller. To accomplish this, the following information is provided:

• General Information and Specifications

• Controls and Indicators

• Functional Description

• Graphical User Interface Operation

• Installation

• Setup

• Maintenance and Troubleshooting

To avoid personal injury or equipment damage, only qualified personnel should
perform the procedures in this manual.

NOTES

Check for the latest version of this instruction manual at www.basler.com
DGC-2020 controllers are moun ted using th e four permane ntly-at tached 10-24

studs and the provided self-locking nuts. Failure to use the proper 10-24
locking nuts may da mage t he stu d thr eads and/or impr operly s ecure the DG C-

2020.
Be sure that the control ler is hard-wired to earth grou nd with no smaller than

12 AWG copper wire attach ed to the c hass is groun d terminal on the rear of the
unit. When the controller is configured in a system with other devices, it is
recommended to use a separate lead to the ground bus from each unit.

The DGC-2020 utilizes pas sword protection that guards against unauthorized
changing of DGC­provided in Section 4, BESTCOMSPlus® Software, General Settings, Device
Security Setup. The default passwords are listed below.

• OEM access level: OEM

• Settings access level: SET

• Operator access level: OP

• LSM-2020 (Load Share Module)

• CEM-2020 (Contact Expansion Module)

• AEM-2020 (Analog Expans ion Mod ule)

• Time Overcurrent Characteristic Curves

• Modbus™ Communication

• PID Tuning Settings

• MTU Fault Codes

.

BOX DEFINITIONS

WARNING!

A warning box indicates a potentially hazardous situa tion which co uld result in
death or injury.

CAUTION

A caution box indicates a potentially hazar dous situation which could result in
equipment or property damage.

NOTE

A note box provides helpful information.

9400200990 Rev X DGC-2020 Introduction i

First Printing: November 2006

OR STATUTORY WARRANTY, INCLUDING BUT NOT LIMITED TO

any products or services supplied or Web sites maintained or provided by third parties and/or

Printed in USA

Copyright © 2014 Basler Electric, Highland Illinois 62249 USA

All Rights Reserved

October 2014

CONFIDENTIAL INFORMATION

of Basler Electric, Highland Illinois, USA. It is loaned for confidential use,
subject to return on request, and with the mutual understanding th at it will not
be used in any manner detrimental to the interest of Basler Electric.

Disclaimer of Liability and Warranty

Basler Electric provides links to third-party Web sites and references to third party products and
services as a convenience in locating relative information, products, and serv ices for our users. The
existence of these links an d referenc es is not to be c onstrued as an endors ement by Basler Electric of
the content of any of these third-party sites, produc ts or services. BASLER ELECTRIC MAKES NO

EXPRESS, IMPLIED,
WARRANTY OF MERCHANTABILITY, WARRANTY OF FITNESS FOR A PAR TICULAR PURPOSE,
WARRANTY OF NONINFRINGEMENT OR THE LIKE, OR WARRANTY OF TITLE. Basler Electric

makes no representatio n of fr eedo m fr om computer viruses or of the ac cur ac y of the in forma ti on an d/or
the quality of products or services provided by thes e referenc ed products or advertis ed on these third­party Web sites. Basl er El ectric d i scl aim s, to th e fullest extent permi ssible by applicable law, an y

and all liability and respo nsibility for any claims o r damage that may ari se as a result of use of
linked to the Basler Electric W eb site. Basler El ectric advises site visitors that link s to Web sites not

controlled by Basler Electr ic are not subject to the privacy notice as sociated with the Basler Electric
Web site and, therefore, are advised to read the privacy policies of any third-party sites accessed
through this site.

It is not the intent ion of th is manual to cover a ll detai ls and variat ions in equipme nt, nor do es this m anual
provide data for every pos s ible c ont ing enc y regar di ng i nstal lat ion or operation. The avai labil ity and design
of all features and options are subject to modification without notice. Should further information be
required, contact Basler Electric.

For terms of service relati ng to this product and software, see the Commercial Ter ms of Products and
Services document available at www.basler.com/terms

.

Basler Electric

12570 State Route 143

Highland IL 62249-1074 USA

http://www.basler.com, [e-mail]

PHONE [phone] FAX [phone]

ii DGC-2020 Introduction 9400200990 Rev X

REVISION HISTORY

Manual

Revision and Date

X, 10/14

• Revised to support firmware package version 1.19.00 (see firmware

• Minor text edits throughout manual.

W, 04/14

• Added German and Portuguese language support.

• Increased unique recorded events to 50 from 30.

V, 03/14

• Added features of DGC-2020 hardware version 3.

• This revision was released in English language only.

U, 03/13

• Revised to support firmware package version 1.17.02 (see firmware

• Minor text edits

T, 01/13

• Revised to support firmware package version 1.17.00 (see firmware

package version history).

S, 05/12

• Revised to support firmware package version 1.15.00 (see firmware

• Added Appendix E • EXHAUST TREATMENT.

R, 10/11

• Added Disclaimer of Liability and Warranty in Introduction.

Q

• This revision letter not used.

The following inform ation provides a h istorical summary of th e changes made to this instruction manual
(9400200990), BESTCOMSPlus® software, firmware package, and hardwar e of the DGC-2020.

Change

package version history) and BESTCOMSPlus version 3.07.00 (see
BESTCOMSPlus revision history).

• Added Diagnostics under Metering Explorer in Section 4.

• Added Offline Logic Simulator in Section 5.

• Improvements to Appendix C, Tuning PID Settings.

• Replaced several BESTCOMSPlus screenshots where the layout

changed throughout manual.

• Added DGC-2000 legacy Modbus option and register table.

• Added Breaker configuration one-line diagram (front panel only) and

mains fail transfer status screen.

• Added Windows 8 compatibility and updated system recommendations

for BESTCOMSPlus and .NET framework.

• Expansion modules (AEM-2020, CEM-2020, and LSM-2020) now

have gold-plated communication terminals for increased signal
integrity.

• Removed product registration information.

• Added EMC wiring requirements for the LSM-2020 BATT and GOV

terminals.

• Minor text edits.

package version history).

• Added new breaker hardware and mains fail transfer settings

package version history).

• Enhanced description of DTCs (diagnostic trouble codes).

• Added Tables 3-5 DTCs Displayed by the DGC-2020 (FMI Strings)

and 3-6 DTCs Displayed by the DGC-2020.

• Removed Setup from Section 6 • Installation, and created separate

Section 7 • Setup.

9400200990 Rev X DGC-2020 Introduction iii

Manual

Revision and Date

Change

P, 08/11

• Revised to support firmware package version 1.13.04 (see firmware

• Improved Figure 8-9, Typical LSM-2020 Interconnection Diagram.

O

• This revision letter not used.

N, 04/10

• Revised to support firmware package version 1.10.00 (see firmware

• Added Table 4-2, Generator Parameter Transmit.

M, 11/09

• Section 1: Under Specifications, Metering, Power Factor, changed

45754.

package version history) and BESTCOMSPlus version 2.10.02 (see
BESTCOMSPlus version history).

• Added LCD Heater specifications in Section 1.

• Added Analog Input Burden data in Section 10.

• Updated Activation of DGC-2020 Plugin for BESTCOMSPlus and

Communication in Secti on 4.

package version history) and BESTCOMSPlus version 2.07.01 (see
BESTCOMSPlus version history).

• Changed Battery Backup for Real-Time Clock to a standard feature.

• Added Table 3-3, J1939 Data Transmitted from the DGC-2020.

calculation method from “PF = P (3-phase average) / S (3-phase
average)” to “PF = Cosine of the Angle between Phase AB voltage
(Vab) and Phase A current (Ia)”.

• Added “Diagnostics” to Figure 2-2, Metering Screen Branches.

• Section 3: Updated MTU Fault Code list.

• Added description for Logic Control Relays in Table 5-1.

• Updated cutout dimensions in Figure 6-1, Panel Cutting and Drilling

Dimensions.

• Section 6: Added Setting Up DGC-2020 Programmable Inputs and

Outputs, Synchronizer, and Setting up a DGC-2020 and LSM-2020 for
a Load Sharing and kW Control Application.

• Section 10: Added Maximum Consumption under Specifications,

Operating Power.

• Appendix B: Improved description for registers 40020, 43750, and

iv DGC-2020 Introduction 9400200990 Rev X

Manual

Revision and Date

Change

L, 05/09

• Added information for CEM-2020H in Sec t ion 9.

B, Modbus Communication.

K, 01/09

• Updated manual to support firmware package 1.08.01 changes and

40476.

J, 08/08

• Added Section 10, AEM-2020 (Anal og Ex pans ion Mo d ule) .

• Added Appendix C, Tu ni ng PID Sett in gs .

I, 07/08

• Changed Output Contacts 13 through 24 rating from 2 Adc to 1 Adc.
Changed Output Contacts 25 through 36 rating from 10 Adc to 4 Adc.

H, 02/08

• Added Section 9, CEM-2020 (Contact Expansion Module).

• Added CSA Certification in Sections 1 (DGC-2020), 8 (LSM-2020), 9

(CEM-2020), and 10 (AEM-2020).

• Added DGC-2020 Setup in Section 6, Installation.

• Added description of special strings displayed (NC, SF, NS, NA, UF)

under DGC-2020 Function Blocks, Communication Ports, CANbus in
Section 3.

• Improved procedure for upgrading firmware in Section 4.

• Expanded explanation of configurable elements in Section 4.

• Added “P” (programmable) curves for overcurrent protection in Section

4.

• Added Figure 4-51, Sy nchronizer Screen, and re-numbered remaining

figures.

• Clarified low-line scale factor on Bus Condition Detection and Pre-

Alarms in Section 4.

• Added “1/2 watt” for resistor in #1 in NOTE box for CANbus in Sections

1, 6, 8, 9, and 10.

• In Figure 8-7, corrected LSM-2020 terminal numbering for AVR & GOV

inputs.

• Added Figure 8-9, additional method for interfacing an external control

device with a DGC-2020 - LSM-2020 system.

• Added “P” curve to Tables A-1 and A-2 in Appendix A, Time

Overcurrent Curves.

• Corrected bit numbering for registers 44812 through 45572 and added

missing bits in Appendix B, Modbus Communication.

• Added registers 44936 through 44946, 44982, and 44984 in Appendix

BESTCOMSPlus version 2.03.00 changes. (See firmware package
and BESTCOMSPlus revision history below for details.)

• Removed duplicate Speed Controller Tuning Procedure from Appendix

C.

• In Appendix B, added additional information for registers 40436 -

• Added information for Automatic Generator Detection in Section 4.

• Improved CAN bus diagrams and notes throughout manual.

• Added information for Integrating Reset func t ion in Sec tion 4.

• Added information for Configurab le Protec t ion in Section 4.

• Improved definition of Emergency Stop Input in Section 6.

• Added installation diagrams for MTU MDEC ECU in Section 6.

• Added Typical LSM-2020 Interconnection Diagram in Section 8.

• Enhanced Section 7, Maintenance and Troubleshooting.

• Added Synchronizer Operation under Breaker Management in Sect ion

3.

• Improved Communication in Section 4.

• Added Bits 6 through 10 to register 44822 in Appendix B.

•

9400200990 Rev X DGC-2020 Introduction v

Manual

Revision and Date

Change

G, 11/07

• Added Section 8, LSM-2020 (Load Share Module).

Added BESTCOM SPlus Multigen Management screens.

F, 08/07

• Updated manual to support firmware package 1.02.00 changes and

and BESTCOMSPlus revision history below for details.)

E, 05/07

• Added description of Clock Setup screen in BESTCO M SPlus.

• Increased Low Coolant Temp Pre-Alarm range to 30 - 150°F.

D, 03/07

• Removed International Modem option from Style Chart in Section 1.

• Added coverage of part numbers 9400200105 and 9400200106.

C, 02/07

• Added Event Recording in Section 3, Function al Desc r ipt ion.

• Minor text edits throug hout manual.

B, 11/06

• Initial release

BESTCOMSPlus®

Version and Date

3.07.00, 10/14

• Updated to support firmware package 1.19.00 (see firmware package

• Changed to make BESTlogicPlus status LEDs report all logic errors.

3.06.00, 04/14

• Maintenance release (BE1-11 changes)

3.05.03, 03/14

• Maintenance release (DECS-250N changes)

3.05.02, 01/14

• Updated to support firmware package 1.18.00 (see firmware package

version history).

3.04.01. 10/13

• Maintenance release (BE1-11 changes)

3.04.00, 08/13

• Maintenance release (BE1-11 changes)

3.03.03, 06/13

• Maintenance release (BE1-11 changes)

3.03.00, 03/13

• Updated to support firmware package 1.17.02 (see firmware package

• Added new mains fail transfer screen.

• Updated HMI screens layout in Section 2.

•

BESTCOMSPlus version 1.03.00 changes. (See firmware package

• Updated several BESTCOMSPlus screen shots.

Change

version history).

• Added Load Share and Control Diagnostics screens.

• Changed to allow the Metering Status screen to open before a

connection is made.

• Removed duplicate results in the device discovery list.

• Improvements to device directory on Connection screen.

• Changed how the LSM-2020 model number is reported on the Device

Info screen.

• Changed to allow a comma in the Device ID.

• Changed to annunciate a connection failure message when a device is

not present on a selected port.

• Improved prompts to save settings when choosing to close all open

views.

• Changed to hide security settings for the LSM-2020 when opening a

settings file.

• Changed to allow the middle mouse button to close the security view.

• Improved display of raw analog input currents.

version history).

• Added breaker hardware settings.

vi DGC-2020 Introduction 9400200990 Rev X

BESTCOMSPlus®

Version and Date

Change

3.02.00, 01/13

• Updated to support firmware package 1.17.00 (see firmware package

• Increased number of logic gates per level from 10 to 20.

3.01.01, 11/12

• Maintenance release (DECS-250 changes)

3.00.02, 09/12

• Maintenance release (BE1-11 changes)

2.14.00, 07/12

• Maintenance release (BE1-11 changes)

2.13.01, 05/12

• Updated to support firmware package 1.15.00 (see firmware package

version history).

2.13.00, 04/12

• Changes invisible to the user.

2.11.02, 12/11

• Added a Cancel button on the Rated Data dialog.

• Improved workspace files.

2.11.01, 11/11

• Changed Manual Regeneration setting to use a button instead of a

• Enhanced settings file printout.

2.10.02, 06/11

• Updated to support firmware package version 1.13.04 (see firmware

• Enhanced BESTlogic™Plus.

2.08.01, 10/10

• Improved off-page logic.

2.08.00, 08/10

• Updated to support firmware package version 1.11.00 (see firmware

package version history).

2.07.03, 06/10

• Changes invisible to the user.

2.07.01, 03/10

• Updated to support firmware package version 1.10.00 (see firmware

compatibility.

2.06.02, 01/10

• Changes invisible to the user.

2.06.01, 12/09

• Added Total Engine Run Time Minutes on Engine and Summary

• Added Windows 7 32-bit compatibility.

version history).

• Added Windows® 8 compatibility.

• Added the ability to disable settings download after reconnect or initial

connect on the Advanced Properties dialog in the DGC-2020
Connection screen.

drop-down menu on the ECU Setup screen.

package version history).

• Settings for generator protection, battery voltage protection, and

configurable protection can now be entered in secondary or per unit
values.

• Added the ability to set IP Address of LSM-2020 through device

discovery.

• Added the ability to select what data to view/export from the Preview

Metering and Export Metering buttons.

• Added the ability to save workspace.

• Added the ability to auto reconnect when connection is lost.

• Added the ability to close multiple views.

package version history).

• Added Export Metering.

• Added Windows® 7 64-bit compatib il ity and rem ov ed Window s 200 0

9400200990 Rev X DGC-2020 Introduction vii

screens in the Metering Explorer.

• BESTCOMSPlus shell enhancements.

BESTCOMSPlus®

Version and Date

2.05.00, 07/09

• Made a correction to announce a message that logic will not be saved

logic control relay outputs in the logic diagram.

2.04.01, 05/09

• Changes invisible to the user.

2.03.01, 02/09

• Added “P” (programmable) curve selection for the 51 function.

Metering Explorer.

2.03.00, 12/08

• Added support for CEM-2020H.

screen.

2.02.01, 10/08

• Maintenance release (BE1-11 changes)

2.01.00, 05/08

• Added settings for AEM-2020.

• Added settings for Configurable Protection.

2.00.01, 03/08

• Added settings for CEM-2020.

1.04.01, 11/07

• Added settings for LSM-2020.

Change

if the maximum number of logic gates on any one level has been
exceeded.

• On the Breaker Management, Breaker Hardware screen, changed the

Gen and Mains Breaker Closing Time from 0.1-600 in increments of

0.1 to 0-800 in increments of 5.

• Corrected Settings Compare error when there are remote outputs or

• Improvement to allow spaces in Initializing Message 1 & 2 on General

Settings, Front Panel HMI screen in the Settings Explorer.

• Improved backwards compatibility.

• Improved Commission Date setting on Run Stat is tics screen in the

• Added Export to File feature.

• Added settings for Phase Toggle and Initializing Messages on General

Settings, Front Panel HMI screen.

• Re-arranged CANbus Setup screen and added ECU Setup screen

under Communications.

• Added settings for 51-3 element under Generator Protection, Current.

• Added setting for Off Mode Cooldown on System Parameters, System

Settings screen.

• Added Remote Module Setup screen under System Parameters.

• Added Remote LSM Inputs settings and metering screens under

Programmable Inputs.

• Added settings to Bias Control screens for Var/PF control.

• Added kvar A, B, C, and Total to Power and Summary metering

screens.

• Re-arranged MTU metering screens.

• Added MTU Status scr een and MTU Engine Status screen.

• Added BESTlogicPlus Input Objects for Configurable Elements,

Configurable Protection, Front Panel Buttons, PF Mode Active, Pre
Start Input, and Run Input.

• Added BESTlogicPlus Pre-Alarms for Checksum Fail and CEM

Hardware Mismatch.

• Added BESTlogicPlus Elements for 51-3, COOLSTOPREQ,

COOLDOWNREQ, EXTSTARTDEL, PRESTARTOUT, RUNOUTPUT,
STARTDELBYP, and STARTOUTPUT.

• Added Relay Control settings on System Param eter s, Sys tem Sett ings

• Added settings for Automatic Generator Protection.

• Added settings for Integrating Reset on 51 function.

viii DGC-2020 Introduction 9400200990 Rev X

BESTCOMSPlus®

Version and Date

Change

1.03.00, 08/07

• Added/Updated screens to support firmware package version 1.03.00.

• Made all status LEDs available as inputs for PLC logic.

1.02.00, 05/07

• Added Spanish language support.

• Changed layout of several screens.

1.01.02, 04/07

• Removed International Modem option from Style Chart.

1.01.01, 02/07

• Added Chinese language support.

1.00.07, 11/06

• Initial release

Firmware Package

Version and Date

1.19.00, 10/14

• Modified Voltage Trim function to support paralleling of reconfigurable

• Added ECU9 Fault Code list for MTU.

1.18.02, 04/14

• Added German and Portuguese language support.

• Increased unique recorded events to 50 from 30.

1.17.07, 05/13

• Minor firmware improvements

1.17.02, 03/13

• Added new breaker hardware and mains fail transfer settings.

units.

(See firmware package version history for details.)

• Added password protection for portions of the programmable logic.

• Added Clock Setup screen.

Change

machines.

• Added MTU Speed Demand Switch setting from logic capability.

• Added a rest timer for cyclic cranking.

• Added Mains Fail Return Fail pre-alarm and Mains Fail Max Return

Time setting.

• Added a deadband setting for speed trim and voltage trim.

• Added Parallel to Mains Gain Factor for mains parallel operation.

• Added System kW Generation in percent to Gen Status screen and

configurable protection.

• Added System Total Capacity on Generator Network Status screen.

• Added DPF Outlet Gas Temperature to J1939 metering and

configurable protection.

• Added John Deere to list of ECU configurations.

• Added AEM thermal protection settings to Modbus.

• Changed DEF EMPTY pre-alarm to DEF LOW SEVERE.

• Changed DEF ENGINE DERATE pre-alarm to DEF INDUCEMENT.

• Added descriptive text for Diagnostic Trouble Codes (DTC’s)

broadcast by Mercedes, PSI, and MTU-ECU9 engine ECU’s.

• Added DGC-2000 legacy Modbus option.

• Added Breaker configuration one-line diagram and mains fail transfer

9400200990 Rev X DGC-2020 Introduction ix

status screen to front panel.

• Improved breaker hardware, synch check, and mains fail logic.

• Added a logic element which allows the EPS Supplying Load front

panel LED to be driven via logic.

• Improved event log processing rate.

• Improved CAN transmit processing rate.

• Added single-phase AC bus sensing configuration option.

• Corrected battle override function preventing engine shut-off in rare

cases.

• Corrected DTCs not clearing when receiving a “no active” DTC frame.

• Corrected frequency settings reverting to 60 Hz on startup for 400 Hz

Firmware Package

Version and Date

Change

1.17.00, 01/13

• Added French language support.

scenarios.

1.15.00, 06/12

• Added Russian language support.

RDP-110.

1.13.08, 11/11

• Made Diesel Particulate Filter Regeneration Request momentary.

• Minor firmware improvements.

• Increased the number of gates per logic level to 20.

• Allow Grounded Delta Override to be effective regardless of configured

generator connection.

• Increased the number of logic latches to 10.

• Added phase rotation checks and pre-alarms.

• Remote speed trim bias adjustable from analog input.

• Added speed bias range in units of percent.

• Added sequencing status display.

• Added Ethernet kW and kvar sharing.

• Phase Imbalance (47) disables in singl e-phase mode.

• Improved response during Modbus writes.

• Increased available configurable protection parameters.

• Added system status display.

• Modified breaker reset function so that breakers are only reset if

locked out, sync failed, or failed to open.

• Added a setting to breaker fail pre-alarm to be active on transitions

only or always.

• Modified sequencing to operate correctly when units are operating due

to external ATS.

• Corrected handling of Combined Code Red Al arm on EC U7/ ECU 8

engines.

• Modified speed raise/lower so no change occurs if both conditions are

true.

• Corrected potential settings loss in weak battery and emergency stop

• Added Auto Breaker Operation Inhibit, Mains Fail Transfer Inhibit, and

Closed Transition Override logic elements.

• Added Restart Delay setting.

• Added SPN Conversion Method

• Increased Max on Weak Battery and Low Battery Pre-alarms. 14 V for

12 V systems and 28 V for 24 V systems.

• Added DPF Soot Level Pre-Alarms

• Added DEF Fluid Level and Inducement Pre-Alarms

• Added Unexpected Shutdown Alarm

• Added function which disables the front panel buttons Run, Off, and

Auto when logic elements Run Mode, Off Mode, and Auto Mode are
set true.

• Added 4 logic elements which override control of 4 LEDs on the

x DGC-2020 Introduction 9400200990 Rev X

Firmware Package

Version and Date

Change

1.13.04, 07/11

• Enhanced configurable protection.

• Improved detection of Intergenset Communications failures.

1.11.02, 11/10

• Improved time dials for fixed time curves of the 51 function.

1.11.00, 08/10

• Changed synchronizer slip frequency to have minimum slip rate of

State.

1.10.00, 03/10

• Added Loss of Mains Protection (78 Vector Shift and 81 ROCOF).

Detection, and Relay Control for organizational purposes.

• Enhanced synchronizer.

• Enhanced J1939.

• Added Q parameter to 51 programmable curve equation.

• Added Sequenced System Startup logic element.

• Added Low Fuel logic element.

• Added Last Unit Shutdown enable/disable setting for generator

sequencing.

• Added the ability to set IP Address of LSM-2020 through the front

panel.

• Added governor load sharing over J1939.

0.01 in increments of 0.01.

• Added pre-alarms logic for Mains Fail Transfer Fail, Gen Breaker Sync

Fail, Gen Breaker Fail to Close, Gen Breaker Fail to Open, Mains
Breaker Sync Fail, Mains Breaker Fail to Close, and Mains Breaker
Fail to Open.

• Added status logic for Mains Fail Transfer Complete and Unloading

• Added Dead Bus Breaker Close Arbitrati on.

• Added GM and Cummins as settings for ECU type.

• Added CAN settings for MTU 50/60 Hz Switch, NMT Alive Transmit

Rate, Generator Parameter Transmit, and Diesel Particulate Filter.

• Added Modem Setup through the Front Panel HMI.

• Added settings for Clock Not Set Warning, Gen CT Low Line Scale

Factor, Horn Enable, Not in Auto Horn Enable, Low Line Scale Factor
for 47 function, Alternate Frequency Scale Factors, Alternate
Frequency, Metric Pressure Units, and Dead Gen Close Enable.

• Added logic for Idle Request, Alternate Frequency Override, Mains Fail

Test, Load Take Over, Alarm Silence, Lamp Test, Generator
Protection, DPF Regeneration Disabled, DPF Regeneration Required,
and High Exhaust Temperature.

• Added ranges for hours and minutes of Logic Timers.

• Moved Engine Cooldown, Horn, Sin gl e-Phase Override, Auto Config

9400200990 Rev X DGC-2020 Introduction xi

Firmware Package

Version and Date

Change

1.09.00, 07/09

• Corrected transmittal of parameters to engine for MDEC module types

a dead generator was not possible.

1.08.01, 01/09

• Added support for CEM-2020H.

• Added “P” (programmable) curve selection for the 51 function.

1.07.02, 09/08

• Finalized settings for AEM-2020.

1.06.00, 07/08

• Added settings for AEM-2020.

Added settings for Configurable Protection.

1.05.00, 04/08

• Added settings for CEM-2020.

1.04.00, 12/07

• Added settings for LSM-2020.

1.03.00, 08/07

• Added 32 and 40Q protection functions.

• Changed the Low-Coolant Temp Pre-Alarm range to 32-150 F.

1.02.00, 05/07

• Added Spanish language support.

1.00.08, 03/07

• Minor firmware improvements.

1.00.07, 01/07

• Added Chinese language support.

201, 302, and 303.

• Implemented most recent MTU fault codes.

• Engine Total Run Time in metering now displays hours and minutes.

Engine Total Run Time previously displayed hours only.

• Added front panel diagnostics to show Modbus Read Count, Modbus

Write Count, and Serial Flash Write Count.

• Modbus legacy registers 40019 and 40020 are now read/write.

Previously these registers were write only.

• Improved MCS5 parameter handling.

• Fixed spurious High Charge Air Temp Pre-Alarm every time engine

starts on MTU-ECU7 mach i nes .

• Accelerator pedal position is now sent to Volvo ECU for load sharing.

• Modified generator breaker logic to allow closure of generator breaker

from a dead gen to a dead bus (if Dead Bus Close Enable is selected).
In previous versions of firmware, closure of the generator breaker from

• Changed time dial range of 51 element fixed time curve from 0-30 s to

0-7,200 s.

• Added Phase Toggle Delay setting for front panel HMI.

• Added Off Mode Cooldown feature.

• Added 51-3 element.

• Added Var/PF control.

• Added LSM Input settings.

• Added Checksum Fail and CEM Hardwar e Mismatc h p r e-alarms.

• Added kvar A, B, C, and Total metering.

• Added several MTU items to metering.

• Re-arranged CANbus Setup screens and added ECU Setu p screens

on front panel HMI.

• Added settings for Automatic Generator Detection.

• Added settings for Integrating Reset on 51 function.

•

• Added Automatic Restart function and Exercise Timer.

xii DGC-2020 Introduction 9400200990 Rev X

• Added dual settings for 51, 27, and 59 functions.

• Added Oil Pressure Crank Disconnect Enabl e.

• Modified Prestart operation during rest cycle.

• Added 2 additional Engine kW Overload Pre-Alarms.

• Added Low Line Scale Factor for EPS Supplying Load and Engine kW

Overload Pre-Alarms.

• Changed the metering range of coolant temperature to 32-410 F.

Firmware Package

Version and Date

Change

1.00.06, 11/06

• Initial release

DGC-2020 Hardware

Revision and Date

AK, 10/14

• Released firmware package 1.19.00 and BESTCOMSPlus 3.07.00.

AJ, 07/14

• Updated internal documentation.

AH, 04/14

• Released firmware package 1.18.02.

AG, 04/14

• Updated internal documentation.

AF, 11/13

• Improved membrane venting to prevent moisture accumulation in LCD

window.

AE, 11/13

• Released DGC-2020 rev 3 hardware: Three-phase bus sensing

• Expanded panel cutout dimensions for easier fit.

AD, 07/13

• Improved LCD heater cable routing.

AC, 06/13

• Upgraded injection mold tool.

AB, 05/13

• Released firmware package 1.17.07

AA, 03/13

• Released firmware package 1.17.02 and BESTCOMSPlus 3.03.00

Z, 01/13

• Released firmware package 1.17.00 and BESTCOMSPlus 3.02.00.

Y, 06/12

• Released firmware package 1.15.00 and BESTCOMSPlus 2.13.01.

X, 06/12

• Changed PCB to enhance product.

W, 09/11

• Released firmware package 1.13.04 and BESTCOMSPlus 2.10.02.

V, 02/11

• Released firmware package 1.11.02.

U, 04/10

• Released firmware package 1.10.00 and BESTCOMSPlus 2.07.01.

T, 01/10

• Improved panel gasket.

S, 10/09

• Improved transient protection.

R, 07/09

• Added ribbon cable slot for front overlay to prevent cable damage.

P, 01/09

• Released firmware package 1.08.01 and BESTCOMSPlus 2.03.00.

N, 09/08

• Released firmware package 1.07.02.

M, 07/08

• Released firmware package 1.06.00 and BESTCOMSPlus 2.01.00.

L, 04/08

• Released firmware package 1.05.00 and BESTCOMSPlus 2.00.01.

K, 01/08

• Added definition of emergency stop input terminals.

J, 12/07

• Released firmware package 1.04.00 and BESTCOMSPlus 1.04.01.

H, 12/07

• Switched LCD heater types for manufacturability.

G, 08/07

• Released firmware package 1.03.00 and BESTCOMSPlus 1.03.00.

F, 04/07

• Released BESTCOMSPlus 1.02.00.

E, 03/07

• Released firmware 1.00.08 and changed LCD heater.

D, 02/07

• LCD heater and battery holder made as a standard feature.

C, 01/07

• Deleted, added, or changed components to enhance product.

B, 11/06

• Initial release

Change

capability, RS-232 port, enhanced microprocessor for expanded
programmable logic, greatly increased mini-B USB transfer rate

9400200990 Rev X DGC-2020 Introduction xiii

xiv DGC-2020 Introduction 9400200990 Rev X

DETAILED FIRMWARE REL E AS E HISTORY

Pkg.

File
Ver.

1.19.00

1.18.02

1.17.07

1.17.02

1.17.00

Digital Genset Controller (DGC-2020) Load Share Module (LSM-2020)

Application Code Flash Language Module CANBus App. Ethernet App.

Version & P/N Version & P/N Lang.* Version & P/N Version & P/N Version & P/N Version & P/N

3.18.00

10/16/14

9400209013/-14

2.18.00

10/16/14

9400206035/-36

1.18.00

10/16/14

9400201087/-88

3.17.02

04/25/14

9400209011/-12

2.17.02

04/25/14

9400206033/-34

1.17.02

04/25/14

9400201085/-86

3.16.07

05/09/13

9400209009/-010

2.16.07

05/09/13

9400206029/-030

1.16.07

05/09/13

9400201082/-083

3.16.02

03/13/13

9400209005/-006

2.16.02

03/13/13

9400206022/-023

1.16.02

03/13/13

9400201076/-077

3.16.00

11/16/12

9400209002/-03

2.16.00

11/16/12

9400206015/-016

1.16.00

11/16/12

9400201070/-071

5.06.00
9/18/14

9400201089

5.05.01

02/04/14

9400201081

5.04.03

05/08/13

9400201084

5.04.01

02/20/13

9400201078

5.04.00

11/16/12

9400201072

C,E,F,
G,P,R,

S

C,E,F,
G,P,R,

S

C,E,F

R,S

C,E,F

R,S

C,E,F

R,S

1.04.00

08/20/14

9417501031

1.03.02

10/28/13

9417501029

1.03.01

03/15/13

9417501024

1.03.01

03/13/13

9417501024

1.03.00

11/07/12

9417501022

1.04.00

08/20/14

9417501032

1.03.02

10/28/13

9417501030

1.03.01

03/15/13

9417501025

1.03.01

03/13/13

9417501025

1.03.00

11/07/12

9417501023

Contact Expansion

Module

(CEM-2020/H)

1.01.04

02/14/13

9421001014

1.01.04

02/14/13

9421001014

1.01.04

02/14/13

9421001014

1.01.04

02/14/13

9421001014

1.01.03

03/29/12

9421001013

Analog Expansion

Module

(AEM-2020)

1.00.05

02/14/13

9421103002

1.00.05

02/14/13

9421103002

1.00.05

02/14/13

9421103002

1.00.05

02/14/13

9421103002

1.00.04

03/29/12

9421103001

9400200990 Rev X DGC-2020 Introduction xv

Pkg.

File
Ver.

1.15.00

1.13.08

1.13.04

1.11.02

1.11.00

1.10.00

1.09.00

1.08.01

1.07.02

1.06.00

1.05.00

1.04.00

1.03.00

Digital Genset Controller (DGC-2020) Load Share Module (LSM-2020)

Application Code Flash Language Module CANBus App. Ethernet App.

Version & P/N Version & P/N Lang.* Version & P/N Version & P/N Version & P/N Version & P/N

2.14.00

08/13/12

9400206009/-010

1.14.00

08/13/12

9400201065/-066

2.12.08

11/10/11

9400206003/-004

1.12.08

11/10/11

9400201058/-059

2.12.04

07/01/11

9400206001/-002

1.12.04

07/01/11

9400201051/-054

1.10.00

07/09/10

9400201046/-052

1.10.00

07/09/10

9400201046/-047

1.09.00

03/05/10

9400201043/-044

1.08.00

06/24/09

9400201039/-040

1.07.01

01/14/09

9400201036/-035

1.06.01
07/5/08

9400201030

1.05.00

05/19/08

9400201028

1.04.00

01/15/08

9400201025

1.03.00

11/21/07

9400201022

1.02.00

08/14/07

9400201020

5.02.00

06/18/12

9400201064

4.06.05

11/04/11

9400201060

4.06.03

07/01/11

9400201055

4.04.01

11/24/10

9400201053

4.04.00

08/02/10

9400201048

4.03.00

03/05/10

9400201045

4.02.00

06/24/09

9400201041

4.00.01

01/14/09

9400201037

3.00.03

07/16/08

9400201031

3.00.00

05/19/08

9400201029

2.03.00

01/15/08

9400201026

2.01.00

11/15/07

9400201023

2.01.00

08/09/07

9400201021

C,E,

R,S

C,E,S

C,E,S

C,E,S

C,E,S

C,E,S

C,E,S

C,E,S

C,E,S

C,E,S

C,E,S

C,E,S

C,E,S N/A N/A N/A N/A

1.02.05

06/12/12

9417501020

1.02.03

07/21/11

9417501016

1.02.03

07/21/11

9417501016

1.01.00

02/04/10

9417501014

1.01.00

02/04/10

9417501014

1.01.00

02/04/10

9417501014

1.00.05

12/09/08

9417501012

1.00.05

12/09/08

9417501012

1.00.04

07/22/08

9417501010

1.00.03

05/19/08

9417501008

1.00.02

01/02/08

9417501006

1.00.00

11/21/07

9417501005

1.02.05

06/12/12

9417501021

1.02.03

07/21/11

9417501017

1.02.03

07/21/10

9417501017

1.01.00

02/04/10

9417501015

1.01.00

02/04/10

9417501015

1.01.00

02/04/10

9417501015

1.00.05

12/09/08

9417501013

1.00.05

12/09/08

9417501013

1.00.04

07/22/08

9417501011

1.00.03

05/19/08

9417501009

1.00.02

01/02/08

9417501007

1.00.00

11/21/07

9417501004

Contact Expansion

Module

(CEM-2020/H)

1.01.03

03/29/12

9421001013

1.01.02

06/06/11

9421001012

1.01.02

06/06/11

9421001012

1.01.00

12/09/08

9421001009

1.01.00

12/09/08

9421001009

1.01.00

12/09/08

9421001009

1.01.00

12/09/08

9421001009

1.01.00

12/09/08

9421001009

1.00.03

07/22/08

9421001007

1.00.01

05/19/08

9421001005

1.00.00

01/02/08

9421001004

N/A N/A

Analog Expansion

Module

(AEM-2020)

1.00.04

03/29/12

9421103001

1.00.03

06/06/11

9421101012

1.00.03

06/06/11

9421101012

1.00.01

12/09/08

9421101009

1.00.01

12/09/08

9421101009

1.00.01

12/09/08

9421101009

1.00.01

12/09/08

9421101009

1.00.01

12/09/08

9421101009

1.00.00

07/22/08

9421101007

N/A

N/A

xvi DGC-2020 Introduction 9400200990 Rev X

Pkg.

File
Ver.

Digital Genset Controller (DGC-2020) Load Share Module (LSM-2020)

Application Code Flash Language Module CANBus App. Ethernet App.

Version & P/N Version & P/N Lang.* Version & P/N Version & P/N Version & P/N Version & P/N

Contact Expansion

Module

(CEM-2020/H)

Analog Expansion

Module

(AEM-2020)

2.00.00

05/01/07

9400201017

1.00.00/1.00.00
9400201011/-

012

1.00.00/1.00.00
9400201011/-

012

N/A N/A N/A N/A N/A N/A

C,E,S N/A N/A N/A N/A

C,E N/A N/A N/A N/A

C,E N/A N/A N/A N/A

1.02.00

N/A

N/A

N/A

1.01.00

05/02/07

9400201016

1.00.08

9400201015

1.00.07

9400201013

1.00.06

9400201008

* C = Chinese, E = English, F = French, G = German, P = Portuguese, R = Russian, S = Spanish
Note: For firmware upgrade procedure, refer to Section 4, BESTCOMSPlus® Software.

9400200990 Rev X DGC-2020 Introduction xvii

xviii DGC-2020 Introduction 9400200990 Rev X

CONTENTS

SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1

SECTION 2 • HUMAN-MACHINE INTERFACE ....................................................................................... 2-1

SECTION 3 • FUNCTIONAL DESCRIPTION ........................................................................................... 3-1

SECTION 4 • BESTCOMSPlus® SOFTWARE ......................................................................................... 4-1

SECTION 5 • BESTlogic™Plus PROGRAMMABLE LOGIC .................................................................... 5-1

SECTION 6 • INSTALLATION .................................................................................................................. 6-1

SECTION 7 • SETUP ................................................................................................................................ 7-1

SECTION 8 • MAINTENANCE AND TROUBLESHOOTING ................................................................... 8-1

SECTION 9 • LSM-2020 (LOAD SHARE MODULE) ................................................................................ 9-1

SECTION 10 • CEM-2020 (CONTACT EXPANSION MODULE) ........................................................... 10-1

SECTION 11 • AEM-2020 (ANALOG EXPANSION MODULE) .............................................................. 11-1

APPENDIX A • TIME OVERCURRENT CHARACTERISTIC CURVES ................................................... A-1

APPENDIX B • MODBUS™ COMMUNICATION ...................................................................................... B-1

APPENDIX C • TUNING PID SETTINGS ................................................................................................. C-1

APPENDIX D • MTU FAULT CODES ....................................................................................................... D-1

APPENDIX E • EXHAUST TREATMEN T ................................................................................................. E-1

9400200990 Rev X DGC-2020 Introduction xix

xx DGC-2020 Introduction 9400200990 Rev X

SECTION 1 • GENERAL INFORMATION

TABLE OF CONTENTS

SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1

Description ............................................................................................................................................. 1-1

Hardware Versions ................................................................................................................................ 1-1

Identifying DGC-2020 Vers i on ............................................................................................................ 1-1

Features ................................................................................................................................................. 1-1

Functions ................................................................................................................................................ 1-2

Generator Protection and Meter ing .................................................................................................... 1-2

Engine Protection and Metering ......................................................................................................... 1-2

Event Recording ................................................................................................................................. 1-2

Auto-Synchronizer .............................................................................................................................. 1-2

Contact Inputs and Output Contacts .................................................................................................. 1-2

Automatic Transfer Switch Control (Mains Failure)............................................................................ 1-2

Communication .................................................................................................................................. 1-2

USB Port ......................................................................................................................................... 1-3

CAN Bus Interface .......................................................................................................................... 1-3

External Dial-Out Modem Port ........................................................................................................ 1-3

RS-485 Port .................................................................................................................................... 1-3

AEM-2020 (Analog Expans ion Mod ule) ................................................................................................. 1-3

CEM-2020 (Contact Expansion Module) ............................................................................................... 1-3

LSM-2020 (Load Share Module) ............................................................................................................ 1-3

Style Number ......................................................................................................................................... 1-3

Specifications ......................................................................................................................................... 1-5

Operating Power ................................................................................................................................ 1-5

Power Consumption ....................................................................................................................... 1-5

Battery Ride Through ......................................................................................................................... 1-5

Current Sensing ................................................................................................................................. 1-5

1 Aac Current Sensing .................................................................................................................... 1-5

5 Aac Current Sensing .................................................................................................................... 1-5

Voltage Sensing ................................................................................................................................. 1-5

Contact Sensing ................................................................................................................................. 1-5

Terminals ........................................................................................................................................ 1-6

Engine System Inputs ........................................................................................................................ 1-6

Fuel Level Sensing ......................................................................................................................... 1-6

Coolant Temperature Sensing ........................................................................................................ 1-6

Oil Pressure Sensing ...................................................................................................................... 1-6

Engine Speed Sensing ................................................................................................................... 1-6

Output Contacts ................................................................................................................................. 1-7

PRESTART, START, and RUN Relays .......................................................................................... 1-7

Programmable Relays (12) ............................................................................................................. 1-7

Metering .............................................................................................................................................. 1-7

Generator and Bus Voltage (rms) ................................................................................................... 1-7

Generator Current (rms) ................................................................................................................. 1-7

Generator and Bus Frequency ....................................................................................................... 1-7

Apparent Power .............................................................................................................................. 1-7

Power Factor .................................................................................................................................. 1-8

Real Power ..................................................................................................................................... 1-8

Oil Pressure .................................................................................................................................... 1-8

Coolant Temperature ...................................................................................................................... 1-8

Battery Voltage ............................................................................................................................... 1-8

Engine RPM .................................................................................................................................... 1-9

Engine Run Time ............................................................................................................................ 1-9

Maintenance Timer ......................................................................................................................... 1-9

Fuel Level ....................................................................................................................................... 1-9

Generator Protection Functions ......................................................................................................... 1-9

Overvoltage (59) and Undervoltage (27) ........................................................................................ 1-9

9400200990 Rev X DGC-2020 General Information i

Underfrequency (81U) and Overfrequency (81O) .......................................................................... 1-9

Reverse Power (32) ........................................................................................................................ 1-9

Loss of Excitation (40Q) ............................................................................................................... 1-10

Overcurrent (51) (Optional) ........................................................................................................... 1-10

Phase Imbalance (47) (Optional) .................................................................................................. 1-10

ROCOF (Rate of Change of Frequency) (81) (Optional) .............................................................. 1-10

Vector Shift (78) (Optional) ........................................................................................................... 1-10

Logic Timers ..................................................................................................................................... 1-10

Communication Interface ................................................................................................................. 1-10

USB ............................................................................................................................................... 1-10

External Dial-Out Modem (Optional)............................................................................................. 1-10

RS-485 (Optional) ......................................................................................................................... 1-10

RDP-110 ....................................................................................................................................... 1-11

CAN .............................................................................................................................................. 1-11

Real-Time Clock ............................................................................................................................... 1-11

Clock Holdup................................................................................................................................. 1-11

LCD Heater ....................................................................................................................................... 1-12

Type Tests ........................................................................................................................................ 1-12

Shock ............................................................................................................................................ 1-12

Vibration ........................................................................................................................................ 1-12

Radio Interference ........................................................................................................................ 1-12

HALT (Highly Accelerated Life Testing) ....................................................................................... 1-12

Ignition System ............................................................................................................................. 1-12

Environment ..................................................................................................................................... 1-12

UL Recognition ................................................................................................................................. 1-12

CSA Certification .............................................................................................................................. 1-13

NFPA Compliance ............................................................................................................................ 1-13

CE Compliance................................................................................................................................. 1-13

GOST-R Certification ....................................................................................................................... 1-13

Physical ............................................................................................................................................ 1-13

Figures

Figure 1-1. DGC-2020 Style Chart for Hardware Version 3 ...................................................................... 1-4

Figure 1-2. DGC-2020 Style Chart for Hardware Versions 1 and 2 .......................................................... 1-4

ii DGC-2020 General Information 9400200990 Rev X

SECTION 1 • GENERAL INFORMATION

Feature

Versions 1 and 2∗

Version 3

Three-phase bus sensing

Single-phase bus sensing only

Available

Optional RS-232 port for
communication with external modem

Optional RJ-11 jack for internal

modem communication only

Description

The DGC-2020 Digital Genset Controller provides integrated engine-genset control, protection, and
metering in a single package. M icroprocessor based tec hnology allows for exact measur ement, setpoint
adjustment, and ti ming func tions. Front panel co ntrols and indica tors enab le quick and simp le DGC-2020
operation. Basler Electric communication software (BESTCOMSPlus®) allows units to be easily
customized for each application. Because of the low sensing burden in the DGC-2020, dedicated
potential transformers (PTs) are not required. A wi de temperature-ran ge liquid crys tal display (LCD) wit h
backlighting can be viewed under a wide range of ambient light and temperature conditions.

Hardware Versions

This instruction manu al covers all hardware versions of the DGC-2020. Differences between hardware
versions are listed in Table 1-1 below, and noted throughout this publication where applicable.

Table 1-1. DGC-2020 Hardware Version Differences

Available

∗Versions 1 and 2 are no longer available for ordering.

Identifying DGC-2020 Version

DGC-2020 version inform ation can be f ound throu gh the front-panel inter face an d via connec tion to a PC
running BESTCOMSPlus software.

Version information is displayed on t he front panel LC D immediately aft er applying operat ing power and
on the Version Info screen. To view the Version Info screen, navigate to Setting s > General Settings >
Version Info > DGC-2 020 > Firmware version. The f irmware version number c onsists of five digits. The
first digit is the hard ware version number. Re fer to Section 2, Controls and Indicators for inf ormation on
using the front panel.

In BESTCOMSPlus, th e DGC-2020 har dware vers ion is found on t he Device Inf o screen. Connect to t he
DGC-2020 and download setti ngs and logic. Using t he Settings Explorer , open G eneral Settings , Device
Info. The hardware version of the DGC-2020 is shown in the Application Version field. The a pplication
version number consis ts of five di gits. The first d igit is the hardwar e version num ber. Refer to Secti on 4,
BESTCOMSPlus Software for details on installing and using BESTCOMSPlus.

Features

DGC-2020 Digital Genset Controllers have the following features:

• Local and Remote Generator Control

• Engine, Generator, and Loss of Mains Protection

• Automatic Transfer Switch Control (Mains Failure)

• Automatic Generator Configuration Detection

• Generator Sequencing

• Generator Soft Loading/Unloading

• Auto Synchronizing

• Programmable Analog Engine Senders

• 16 Programmable Contact Inputs

• Programmable Logic

• Exercise Timer

• ECU Communications via SAE J1939

• Marathon DVR2000E+ Voltage Regulator Control via SAE J1939

• Integrated RS485 communication (optional)

• Dial-Out Modem communication (optional)

• Additional modules available to expand the capabilities of the DGC-2020

9400200990 Rev X DGC-2020 General Information 1-1

Functions

DGC-2020 Digital Genset Controllers perform the following functions:

Generator Protection and Metering

Multifunction generator protection guards against generator overvoltage, undervoltage, reverse power,
loss of excitation, underfre quency, and overfreque ncy. Overcurrent, phase imb alance, and loss of mains
protection are available as an o ption. Each generator protection f unction has an adjustable pickup and
time delay setting. Sixteen invers e time curves en able the DGC-20 20 to offer ov ercurrent prot ection in a
variety of applications.

Metered generator parameters include voltage, current, real power (watts), apparent power (VA), and
power factor (PF).

Engine Protection and Metering

Engine protection fe atures inc lude o il press ure a nd coola nt temp eratur e mo nitorin g, overc rank pr otec tion,
ECU specific protection elements, and diagnostic reporting.

Metered engine param eters include oil press ure, coolant temperature, battery voltage, speed, f uel level,
engine load, coolant level (from ECU), ECU specific parameters, and run-time statistics.

Event Recording

An event log retains a histo ry of system events in n onvolatile mem ory. Up to 30 event ty pes are retained
and each record contains a time stamp of the first and last occurrence, a nd the number of occ ur renc es for
each event. For more informati on, se e Sec ti on 3, Fun ctiona l Des c riptio n, Ev ent Rec ordin g.

Auto-Synchronizer

An optional automatic synchronizer monitors the bus and generator voltages and supplies discrete
raise/lower correcti on signals to sy nchronize the ge nerator v oltage, frequenc y, and slip angle with that o f
the bus.

Contact Inputs and Output Contacts

DGC-2020 controllers have one, dedicated emergency stop contact input and 16 program mable contact
inputs. All contact inputs re cognize dry contacts. T he program mable inpu ts can be config ured to initiat e a
pre-alarm or alarm. A programmable input can be programmed to receive an input from an automatic
transfer switch or over ride DGC-2020 alarms and protec tion functions. Each programmable in put can be
assigned a user-defined name for easy identification at the front panel display and in fault records.

Output contacts include thr ee dedicated relays for ener gizing an engine’s glow plugs, fuel s olenoid, and
starter solenoid. An additional four user -progr amma ble outp ut cont acts are provided i f the style number is
xxAxxxxxx. If the style number is xxBxxxxxx, an additional twelve output contacts are provided.

Additional contact inputs and output contacts can be accommodated with an o ptio nal CEM-2020 (Contact
Expansion Module). Contact Basler Electric for ordering information.

Automatic Transfer Switch Control (Mains Failure)

The DGC-2020 has the ab ility to detect a mains failur e via a single- or three-phase Bus input. A mains
failure is established when any one of the following conditions are met:

• Any phase of bus voltage falls below dead bus threshold

• Any phase of bus voltage unstable due to overvoltage or undervoltage

• Any phase of bus voltage unstable due to overfrequency or underfrequency

At this time, the DGC-2 020 will start the genset and when ready , apply power to the loa d via the gens et.
The DGC-2020 impleme nts open or closed transitio ns to and from the mains. Whe n the mains returns
and is considered sta ble, the DG C-2020 w ill transf er the load back to t he mains. When closed transitions
are required, the Auto Synchronizer option of the DGC-2020 is required in order to synchronize the
generator to the mains when transferring a load from generator power to utility power.

Communication

Standard DGC-2020 communication features include a standard USB port and SAE J1939 interface.
Optional communicat ion features include an RS-232 port for conn ection with an external dial-out modem

1-2 DGC-2020 General Information 9400200990 Rev X

and RS-485 communication port. BESTCOMSPlus® can communicate with the DGC-2020 through
Ethernet via an optional LSM-2020 (Load Share Module). Contact Basler Electric for ordering information.

USB Port

A USB communication port can be used with BESTCOMSPlus® software to quickly configure a DGC­2020 with the desired settings or retrieve metering values and event log records.

CAN Bus Interface

A CAN bus interface provides high-spee d commu nication b etween the DGC-2020 and the eng ine contro l
unit (ECU) on an e lectronically contr olled engine. Th is interface provid es access to oil pres sure, coolant
temperature, and engine s peed data by reading thes e parameter s direc tly from th e ECU. When av aila ble,
engine diagnostic data can also be accessed.

The CAN bus interface also provides communication between the DGC-2020 and the Marathon
DVR2000E+ voltage regulator. Voltage setpoint and underfrequency knee-point settings can be sent
directly to the DVR2000E+ from the DGC-2020.

The CAN bus interface supports the following protocols:

• SAE J1939 Protocol - Oil pressure, coolant temperature, and engine speed data are

received from the ECU. In addition, DTCs (D iagnostic Trouble Codes) help diag nose any engine
or related failures. The eng ine DTCs are displayed on the front panel of the DGC -2020 and may
be obtained using BESTCOMSPlus® software.

• MTU Protocol - A DG C-2 020 c onnected to a gense t e quip ped wit h an MTU engine ECU receives

Oil pressure, coolant temperature, and en gine speed data from the engine con troller, along with
various alarms and pre-alarms that are MTU specific. In addition, the DGC-2020 tracks and
displays the active fault codes issued by the MTU engine ECU.

External Dial-Out Modem Port

An optional RS-232 comm unication port uses the ASCII protocol to communicate with a user-supplied
external modem. Th e opti onal ex terna l dial-out modem enables r emote contro l, mon itoring, an d sett ing of
the DGC-2020. When an alarm or pre-alarm condition occurs, the DGC-2020 can dial up to four
telephone numbers, in sequence, until an answer is received and the condition is annunciated.

RS-485 Port

An optional RS-485 com municatio n port uses the Modbus™ communicati on protocol a nd enables remot e
control and monitoring of the DGC-2020 over a polled network.

AEM-2020 (Analog Expansion Module)

The optional AEM-2020 provides eight remote analog inputs, eight remote RTD inputs, two remote
thermocouple inputs, an d four remote analog outputs t o the DGC-2020. The AEM-2020 communicates
with the DGC-2020 through a CAN bus interface. Refer to Section 11, AEM-2020 (Analog Expansion
Module), for more information.

CEM-2020 (Contact Expansion Module)

The optional CEM-2020 provides 10 additional contact inputs and 18 or 24 additional output contacts
(depending on module type) to the DGC-2020. The CEM-2020 communicates with the DGC-2020 through
a CAN bus interface. Refer to Section 10, CEM-2020 (Contact Expansion Module), for more information.

LSM-2020 (Load Share Module)

The optional LSM-2020 in conjunction with the DGC-2020 provides load sharing between governors
through an analog load sh are line. The LSM-2020 commu nicates through an Et hernet port and provides
access to the DGC-2020 via Ethernet. Refer to Section 9, LSM-2020 (Load Share Module), for more
information.

Style Number

Standard-order DGC-20 20 contr ollers are identifie d by a sty le number w hich cons ists of a co mbinatio n of
letters and numbers that define the controller’s electrical characteristics and operational features. The

9400200990 Rev X DGC-2020 General Information 1-3

model number, together with the style number, describes the options included in a specific controller.
Figure 1-1 i llustrates the DGC-2020 styl e number identification ch art for hardware ver sion 3. Figure 1-2
illustrates the DGC-2020 style number identification chart for hardware versions 1 and 2.

Figure 1-1. DGC-2020 Style Chart for Hardware Version 3

Figure 1-2. DGC-2020 Style Chart for Hardware Versions 1 and 2

For example, if a DGC-2020 (hardw are version 3) style num ber were 51BNBREAH, the con troller would
have the following characteristics and operating features.

5 5 Aac current sensing inputs
1 50/60 hertz nominal generator frequency
B Three fixed-function output contacts and 12 programmable output contacts
N No RS-485 communication port
B Battery backup for real-time clock during losses of control power
R External dial-out modem port
E Enhanc ed gen er ator pr otection (27 undervoltage, 32R reverse power, 40Q loss of excitation, 47

phase imbalance, 51 overcurrent, 59 overvoltage, 78 vector shift, 81O overfrequency, 81U
underfrequency, and 81 ROCOF)

A Auto-synchronizer
H LCD heater

1-4 DGC-2020 General Information 9400200990 Rev X

Specifications

Operating Power

Nominal ............................................. 12 or 24 Vdc

Range ............................................... 6 to 32 Vdc

Terminals .......................................... 3 (+), 2 (–), 1 (chassis ground)

Power Consumption

Sleep Mode ....................................... 5W with all relays non-energized

Normal Operational Mode ................ 7.9W - Run mode, LCD heater off, 3 relays energized

Maximum Operational Mod e ............ 14.2W - Run mode, LCD heater on, 6 relays energized

Battery Ride Through

Withstands cranking ride-through down to 0 V for 50 ms, starting at 10 Vdc.

Current Sensing

Burden .............................................. 1 VA

Terminals .......................................... 68, 69 (A-phase)

71, 72 (B-phase)
74, 75 (C-phase)

1 Aac Current Sensing

Continuous Rating ............................ 0.02 to 1.0 Aac

1 Second Rating ............................... 2 Aac

5 Aac Current Sensing

Continuous Rating ............................ 0.1 to 5.0 Aac

1 Second Rating ............................... 10 Aac

Voltage Sensing

Generator Configuration ................... Line-to-line or line-to-neutral

Bus Configuration ............................. Line-to-line

Range ............................................... 12 to 576 V rms, line-to-line

Frequency ......................................... Style selectable, 50/60 Hz or 400 Hz

Frequency Range ............................. 10 to 72 Hz for 50/60 style and 10 to 480 Hz for 400 Hz style

Burden ............................................. 1 VA

1 Second Rating ............................... 720 V rms

Generator Sensing Terminals ........... 41 (A-phase)

39 (B-phase)
37 (C-phase)
35 (Neutral)

Bus Sensing Terminals

Hardware Version 3 .......................... 76, 45 (A-phase)∗

78, 43 (B-phase)∗
80 (C-phase)

Hardware Versions 1 and 2 .............. 45 (A-phase)

43 (B-phase)
∗ In version 3 hardware, terminal 45 is internally tied to 76 and terminal 43 is internally tied to 78. This
accommodates the use of connectors wired for legacy DGC-2020 versions.

Contact Sensing

Contact sensing inputs incl ude 1 emergency stop input and 16 programmable inputs. All inputs accept dry
contacts.

Time from a DGC-2020 input application to:
Shutdown the generator via an alarm = 490 ms max

Close a relay on board the DGC-2020 = 215 ms max
Close a relay on board the CEM-2020 = 400 ms max

9400200990 Rev X DGC-2020 General Information 1-5

A contact i nput is true (on) if the input is connected t o battery ground with a
resistance of less than 240 ohms.

The maximum length of wire that can be accommodated depends on the
resistance of the w ire, and the resist ance of the conta cts of the device driving
the input at the far end of the wire.

The maximum wire length can be calculated as follows:

L

= (240 – R

max

)/(Resistance per Foot of Desired Wire)

device

Terminals

Emergency Stop ............................... 46, 47

Programmable

Input 1 ............................................... 30, 2

Input 2 ............................................... 29, 2

Input 3 ............................................... 28, 2

Input 4 ............................................... 27, 2

Input 5 ............................................... 26, 2

Input 6 ............................................... 25, 2

Input 7 ............................................... 24, 2

Input 8 ............................................... 23, 2

Input 9 ............................................... 22, 2

Input 10 ............................................. 21, 2

Input 11 ............................................. 20, 2

Input 12 ............................................. 19, 2

Input 13 ............................................. 18, 2

Input 14 ............................................. 17, 2

Input 15 ............................................. 16, 2

Input 16 ............................................. 15, 2

NOTES

Engine System Inputs

Stated accuracies are subject to the accuracy of the senders used. Values within these ranges are
deemed “good” and the DGC-2020 will use them for the appropriate calculation and protection. Values
outside these ranges are deemed “bad” and the DGC-2020 will begin timing towards a sender failure
condition.

Fuel Level Sensing

Resistance Range ............................ 0 to 250 Ω nominal

Terminals .......................................... 9, 11 (sender common)

Coolant Temperature Sensing

Resistance Range ............................ 10 to 2,750 Ω nominal

Terminals .......................................... 10, 11 (sender common)

Oil Pressure Sensing

Resistance Range ............................ 0 to 250 Ω nominal

Terminals .......................................... 8, 11 (sender common)

Engine Speed Sensing

Magnetic Pickup

Voltage Range .................................. 3 to 35 V peak (6 to 70 V peak-peak)

Frequency Range ............................. 32 to 10,000 Hz

Terminals .......................................... 31 (+), 32 (–)

Generator Voltage

Range ............................................. 12 to 576 V rms

Terminals .......................................... 41 (A-phase)

39 (B-phase)
37 (C-phase)

1-6 DGC-2020 General Information 9400200990 Rev X

Output Contacts

PRESTART, START, and RUN Relays

Rating ............................................... 30 Adc at 28 Vdc - General purpose, 3 A pilot duty∗

Programmable Relays (12)

Rating ............................................... 2 Adc at 28 Vdc - General purpose, 1.2 A pilot duty∗

∗ The load mus t be in parallel with a diode rated at least 3 tim es the coil current and 3 times the coil

voltage.

Terminals†

Output 1 ............................................ 52, 51 (common)

Output 2 ............................................ 53, 51 (common)

Output 3 ............................................ 54, 51 (common)

Output 4 ............................................ 56, 55 (common)

Output 5 ............................................ 57, 55 (common)

Output 6 ............................................ 58, 55 (common)

Output 7 ............................................ 60, 59 (common)

Output 8 ............................................ 61, 59 (common)

Output 9 ............................................ 62, 59 (common)

Output 10 .......................................... 64, 63 (common)

Output 11 .......................................... 65, 63 (common)

Output 12 .......................................... 66, 63 (common)

† The number of programmable output contacts provided is determined by the output contacts

character of the DGC-2020 style number. Controllers with output contacts option A have 4 program­mable outputs (Outputs 1, 2, 3, and 4). Controllers with output contacts option B have 12
programmable outputs.

The programmable relays share common terminals: terminal 51 is used for outputs 1, 2, and 3,

terminal 55 is us ed for out puts 4, 5, and 6, ter minal 59 is used for outputs 7, 8, and 9, 63 is used for
outputs 10, 11, and 12.

Metering

Generator and Bus Voltage (rms)

Metering Range ................................ 0 to 576 Vac (direct measurement)

577 to 9,999 Vac (through VT using VT ratio setting)

VT Ratio Range ................................ 1:1 to 125:1 in primary increments of 1

Accuracy* ......................................... ±1.0% of programmed rated voltage or ±2 Vac

Display Resolution ............................ 1 Vac

* Voltage metering indicates 0 V when generator voltage is below 2% of the full-scale rating.

Generator Current (rms)

Generator current is measured at the secondary windings of user-supplied 1 A or 5 A CTs.

Metering Range ................................ 0 to 5,000 Aac

CT Primary Range ............................ 1 to 5,000 Aac in primary increments of 1 Aac

Accuracy* ......................................... ±1.0% of programmed rated current or ±2 Aac

Display Resolution ............................ 1 Aac

* Current metering indicates 0 A when generator current is below 2% of the full-scale rating.

Generator and Bus Frequency

Generator frequency is sensed through the generator voltage input.

Metering Range ................................ 10 to 72 Hz (50/60 Hz)

10 to 480 (400 Hz)

Accuracy ........................................... ±0.25% or 0.05 Hz

Display Resolution ............................ 0.1 Hz

Apparent Power

Indicates total kVA and individual line kVA (4-wire, line-to-neutral or 3-wire, line-to-line).

9400200990 Rev X DGC-2020 General Information 1-7

Measurement/Calcula tio n Meth ods

Total .................................................. kVA = (V

× IL ×√3) ÷ 1000

L-L

4-Wire, Line-to-Neutral ..................... kVA calculated with respect to neutral

3-Wire, Line-to-Line .......................... A-phase kVA = V

B-phase kVA = V
C-phase kVA = V

× IA ÷ 1000 ÷ √3

AB

× IB ÷ 1000 ÷ √3

BC

× IC ÷ 1000 ÷ √3

CA

Accuracy ........................................... ±3% or the full-scale indication or ±2 kVA ∗†

∗ kVA metering indicates 0 kVA when the generator kVA is below 2% of the full-scale rating.
† Applies when temperature is between −40°C to +70°C.

Power Factor

Metering Range ................................ 0.2 leading to 0.2 lagging

Calculation Method ........................... PF = cosine of the angle between phase AB voltage (Vab) and

phase A current (Ia) *

Accuracy ........................................... ±0.02 †

* In single-phase AC-connected machines, it is the cosine of the angle between phase CA voltage

(Vca) and phase C current (Ic).

† Applies when temperature is between –40°C to +70°C (–40°F to +158°F).

NOTE

For the DGC-2020 to correctly meter power factor, the generator must be
rotating clockwise (A-B-C).

Real Power

Indicates total kW and individual line kW (4-wire, line-to-neutral or 3-wire line-to-line)

Measurement/Calcula tio n Meth ods

Total .................................................. PF × Total kVA

4-Wire, Line-to-Neutral ..................... kW calculated with respect to neutral

3-Wire, Line-to-Line .......................... A-phase kW = V

B-phase kW = V
C-phase kW = V

× IA × PF ÷ 1000 ÷ √3

AB

× IB × PF ÷ 1000 ÷ √3

BC

× IC × PF ÷ 1000 ÷ √3

CA

Accuracy ........................................... ±3% of the full-scale indication or ±2 kW ∗†

∗ kW metering indicates 0 kW when the generator kW is below 2% of the full-scale rating.
† Applies when temperature is between –40°C to +70°C.

Oil Pressure

Metering Range ................................ 0 to 150 psi, 0 to 10.3 bar, or 0 to 1,034 kPa

Accuracy ........................................... ±3% of actual indication or ±2 psi, ±0.12 bar, or ±12 kPa ( subjec t to

accuracy of sender)

Display Resolution ............................ 1 psi, 0.1 bar, or 1 kPa

Coolant Temperature

Metering Range ................................ 32 to 410°F or 0 to 204°C

Accuracy ........................................... ±3% of actual indication or ±2° (subject to accuracy of sender)

Battery Voltage

Metering Range ................................ 6 to 32 Vdc

Accuracy ........................................... ±3% of actual indication or ±0.2 Vdc

Display Resolution ............................ 0.1 Vdc

1-8 DGC-2020 General Information 9400200990 Rev X

Engine RPM

Metering Range ................................ 0 to 4,500 rpm

Accuracy* ......................................... ±2% of actual indication or ±2 rpm

Display Resolution ............................ 2 rpm

* When engine speed is below 2% of full-scale, reported rpm is 0.

Engine Run Time

Engine run time is retained in nonvolatile memory.

Metering Range ................................ 0 to 99,999 hours

Update Interval ................................. 6 min

Accuracy ........................................... ±1% of actual indication or ±12 min

Display Resolution ............................ 1 minute

Maintenance Timer

Maintenance timer indicates the time remaining until genset service is due. Value is retained in
nonvolatile memory.

Metering Range ................................ 0 to 5,000 hours

Update Interval ................................. 6 min

Accuracy ........................................... ±1% or actual indication or ±12 min

Display Resolution ............................ 1 minute

Fuel Level

Metering Range ................................ 0 to 100%

Accuracy ........................................... ±2% (subject to accuracy of sender)

Display Resolution ............................ 1.0%

Generator Protection Functions

Overvoltage (59) and Undervoltage (27)

Pickup Range ................................... 70 to 1,000 Vac

Pickup Increment .............................. 1 Vac

Inhibit Frequency Range .................. 20 to 400 Hz (27 function only)

Activation Delay Range .................... 0 to 30 s

Activation Delay Increment ............... 0.1 s

NOTE

The maximum voltage that can be s afely ap plied to t he DGC-2020 is 576 volts.
The pickup range is higher so that when the lo w-line over ride is used, and the
scale factor is 0.5 or less, effective protection levels of 500 volts can be
reached with a scale factor of 0.5.

Underfrequency (81U) and Overfrequency (81O)

Pickup Range ................................... 45 to 66 Hz (50/60 Hz nominal)

360 to 440 Hz (400 Hz nominal)

Pickup Increment .............................. 0.1 Hz (50/60 Hz nominal)

0.1 Hz (400 Hz nominal)

Activation Delay Range .................... 0 to 30 s

Activation Delay Increment ............... 0.1 s

Inhibit Voltage Range ....................... 70 to 576 Vac (81U function only)

Reverse Power (32)

Pickup Range ................................... –50 to 5% of Genset kW Rating

Pickup Increment .............................. 0.1%

Hysteresis Range ............................. 1 to 10% of Genset kW Rating

Hysteresis Increment ........................ 0.1%

Activation Delay Range .................... 0 to 30 s

Activation Delay Increment ............... 0.1 s

9400200990 Rev X DGC-2020 General Information 1-9

Loss of Excitation (40Q)

Pickup Range ................................... –150 to 0% of Rated kvar*

Pickup Increment .............................. 0.1%

Hysteresis Range ............................. 1 to 10% of Rated kvar*

Hysteresis Increment ........................ 0.1%

Activation Delay Range .................... 0 to 30 s

Activation Delay Increment ............... 0.1 s

* Rated kvar is calculated on the System Settings, Rated Data screen in BESTCOMSPlus®.

Overcurrent (51) (Optional)

Pickup Range ................................... 0.18 to 1.18 Aac (1 A current sensing)

0.9 to 7.75 Aac (5 A current sensing)

Time Dial Range ............................... 0 to 7,200 s (fixed time curve)

0 to 9.9 (inverse curve time multiplier)

Time Dial Increment.......................... 0.1

Inverse Time Curves......................... See Appendix A, Time Overcurrent Characteristic Curves

Phase Imbalance (47) (Optional)

Pickup Range ................................... 5 to 100 Vac

Pickup Increment .............................. 1 Vac

Activation Delay Range .................... 0 to 30 s

Activation Delay Increment ............... 0.1 s

ROCOF (Rate of Change of Frequency) (81) (Optional)

Pickup Range ................................... 0.2 to 10 Hz/s

Pickup Increment .............................. 0.1 Hz/s

Activation Delay Range .................... 0 to 100 s

Activation Delay Increment ............... 0.01 s

Vector Shift (78) (Optional)

Pickup Range ................................... 2 to 90°

Pickup Increment .............................. 1°

Logic Timers

Hours Setting Range ........................ 0 to 250

Hours Setting Increment ................... 1

Minutes Setting Range ..................... 0 to 250

Minutes Setting Increment ................ 1

Seconds Setting Range .................... 0 to 1,800

Seconds Setting Increment .............. 0.1

Accuracy ........................................... ±15 ms

Communication Interface

USB

Specification Compatibility ................ USB 2.0

Data Transfer Speed ........................ 115200 baud

Connector Type ................................ Mini-B jack

External Dial-Out Modem (Optional)

Protocol ............................................. ASCII

Data Transmission ............................ Full Dup lex

Baud ................................................. 9600

Data Bits ........................................... 8

Parity ................................................. None

Stop Bits ........................................... 1

Connector Type ................................ DB-9 Connector (Male)

RS-485 (Optional)

Baud ................................................. 9600

Data Bits ........................................... 8

1-10 DGC-2020 General Information 9400200990 Rev X

Parity ................................................. None

The J1939 drain (shield) should be grounded at one point only. If

CAUTION

2020 is to be

Stop Bits ........................................... 1

Terminals .......................................... 14 (A), 13 (B), and 12 (shield)

RDP-110

Minimum Wire Size ........................... 20 AWG

Maximum Wire Length ...................... 4,000 feet ( 1,2 19 met er s)

Terminals .......................................... 6 (RDP TXD–), 7 (RDP TXD+)

CAN

NOTES

1. If the DGC-2020 is providing one end of the J19 39 bus, a 120 Ω, ½ watt
terminating resistor shou ld be insta lled ac ross terminal s 48 (CANL) and 49
(CANH).

2. If the DGC-2020 is not part of the J1939 bus, the stub connecting the
DGC-2020 to the bus should not exceed 914 mm (3 ft) in length.

3. The maximum bus length, not including stubs, is 40 m (131 ft).

4.
grounded elsewhere, do not connec t the drai n to the D GC -2020.

Differential Bus Voltage .................... 1.5 to 3 Vdc

Maximum Voltage ............................. –32 to +32 Vdc with respect to negative battery terminal

Communication Rate ........................ 250 kb/s

Terminals .......................................... 48 (low), 49 (high), and 50 (shield)

Real-Time Clock

Clock has leap year and s electable daylight s aving time cor rection. Backup c apacitor and backup battery
sustain timekeeping during losses of DGC-2 020 operating power.

Resolution ......................................... 1 s

Accuracy ........................................... ±1.73 s/d at 25°C

Clock Holdup

Battery Holdup Time ......................... Approximately 10 yrs

Battery Type ..................................... Rayovac BR2032, lithium, coin-type, 3 Vdc, 195 mAh

Basler Electric P/N 38526

Replacement of the bac kup bat tery f or the real-time clock s hould b e p er forme d
only by qualified personnel.

Do not short-circuit t he batt ery, rever se battery polarity , or attem pt to rechar ge
the battery. Observe po larity markings on the battery socket while inserting a
new battery. The battery polarity mus t be correc t in order to provide back up for
the real-time clock.

It is recommended that the battery be removed if the DGC­operated in a salt-fog environment. Salt-fog is known to be conductive and
may short-circuit the batter y.

NOTE

Failure to replace the battery with Basler Electric P/N 38526 may void the
warranty.

9400200990 Rev X DGC-2020 General Information 1-11

LCD Heater

The ambient temperat ure is monitored by a temperat ure sensor located near the LCD ins ide the DGC-

2020. The LCD heater turns on when the ambient temperature falls below 0°C (32°F). The heater turns off
when the ambient temp erature rises above 5 °C (41°F). This range of operation implements 5°C (9°F) of
hysteresis between heater turn on and turn off.

Type Tests

Vibration ............................................ EN60068-2-6

Dielectric Strength ............................ EN60664-1

Impulse ............................................. EN60664-1

Transients ......................................... EN61000-4-4

Static Discharge ................................ EN61000-4-2

Shock

Withstands 15 G in 3 perpendicular planes.

Vibration

Swept over the following ra nges for 12 sweeps in e ach of three mutually per pendicular planes with each
15-minute sweep consisting of the following:

5 to 29 to 5 Hz .................................. 1.5 G peak for 5 minutes

29 to 52 to 29 Hz .............................. 0.036 inches (0.914 mm) double amplitude for 2.5 minutes

52 to 500 to 52 Hz ............................ 5 G peak for 7.5 minutes

Radio Interference

Type tested using a 5 W, hand-held transceiver operatin g at random frequencies centered ar ound 144
and 440 MHz with the antenna located within 150 mm ( 6”) of the device in both vertic al and horizontal
planes.

HALT (Highly Accelerated Life Testing)

HALT is used by Basler Electric to prove that our products will provide the user with many years of
reliable service. HALT subjects the device to extreme s in temperature, shock , and vibration to simulate
years of operation, but in a muc h s hort er period span. HALT a llo ws Basler Electric to evaluate all possib le
design elements that will add to the life of this device. As an example of some of the extreme testing
conditions, the DGC-2020 was subjected to temperature tests (tested over a temperature range of
–100°C to +115°C),
over a temperature range of –80°C to +90°C). Combined temperature and vibration testing at these
extremes proves that the D GC-2020 is ex pected to provide lon g-term oper ation in a r ugged envir onment.
Note that the vibration a nd t emperatur e ex tremes listed in this p aragra ph are s pec ific to H ALT and do not
reflect recommended operation levels. These operational ratings are included in Section 1 of this manual.

vibration tests (of 5 to 50 G at +20°C) , and temperature/vibration tests (tested at 40 G

Ignition System

Tested in close proximity to an unshielded, unsuppressed Altronic DISN 800 Ignition System.

Environment

Operating Temperature .................... –40 to +70°C (–40 to +158°F)

Storage Temperature........................ –40 to +85°C (–40 to +185°F)

Humidity ............................................ IEC 60068-2-38

Salt Fog ............................................ ASTM B 17-73, EN 68-2-11

Ingress Protection ............................. IEC IP54 for front panel

UL Recognition

The DGC-2020 is recognized to applicable Canadian and US safety standards and requirements by UL.
Standards used for evaluation:

• UL6200

• CSA C22.2 No. 14

CAUTION

To follow UL guidelines, replacement of the backup battery for the real-time
clock should be performed only by qualified personnel.

1-12 DGC-2020 General Information 9400200990 Rev X

Part Number 9400200223

“cURus” recognized per Standard 1604, Electrical Eq uipment for Use in Class I and II, Div ision 2, a nd
Class III Hazardous (Classified) Locations, Class I, Division 2, Zone 2, Groups A, B, C, D,

Temperature Code - T3C.
This equipment is s uitable for use in Class I, Divis ion 2, Groups A, B, C, D, or n on-hazardous loc ations

only.
Currently, only style DGC-2020-51BRBXEAH is available with Hazardous Location certification. If an

additional style option is needed with this certification, contact Basler Elec tr ic.

WARNING! - EXPLOSION HAZARD

Substitution of components may impair suitability for Class I, Division 2.
Do not disconnect eq uipment unless power has been s witched off or the area

is known to be non-hazardous.
Exposure to some ch emicals may degrade the sealing proper ties of materials

used in the sealed relay device.

CSA Certification

The DGC-2020 was tested and has met the certification requirements for electrical, plumbing and/or
mechanical products.
Standards used for evalu ati on:

• CSA C22.2 No. 0

• CSA C22.2 No. 14

NFPA Compliance

Complies with NFPA Standard 110, Standard for Emergency and Standby Power.

CE Compliance

This product has been evaluated and complies with the relevant essential requirements set forth by the
EU legislation.

EC Directives:

• LVD – 2006/95/EC

• Electromagnetic Compatibility (EMC) – 2004/108/EC

Harmonized Standards used for evaluation:

• EN 50178: Electronic Equipment for use in Power Insta llatio ns

• EN 61000-6-4: Electromag netic Compatibility (EMC), Generic Sta ndards, Emission Standard for

Industrial Environments

• EN 61000-6-2: Electromag netic Compatibility (EMC), Generic Standards, Immunity for Industria l

Environments

GOST-R Certification

The DGC-2020 has been evaluated and complies with the relevant essential requirements set forth to
meet the Russian certification system.

Physical

Weight ............................................... 4.40 lb (1.99 kg)

Dimensions ....................................... See Section 6, Installation.

9400200990 Rev X DGC-2020 General Information 1-13

1-14 DGC-2020 General Information 9400200990 Rev X

SECTION 2 • HUMAN-MACHINE INTERFACE

TABLE OF CONTENTS

SECTION 2 • HUMAN-M ACHINE INTERF ACE ....................................................................................... 2-1

Introduction ............................................................................................................................................ 2-1

Front Panel ............................................................................................................................................. 2-1

Display Operation................................................................................................................................... 2-2

Login and Permissions ....................................................................................................................... 2-2

Summary Screen and Configurable Metering .................................................................................... 2-3

Sleep Mode ........................................................................................................................................ 2-4

Changing a Setting ............................................................................................................................. 2-4

Front Panel Display Structu r e ............................................................................................................ 2-4

Generator Network Status Dis pl ay ................................................................................................... 2-26

Rear Panel ........................................................................................................................................... 2-27

Figures

Figure 2-1. Front Panel HMI ...................................................................................................................... 2-1

Figure 2-2. Metering Screen Branc hes ..................................................................................................... 2-4

Figure 2-3. Settings Screen Branches..................................................................................................... 2-11

Figure 2-4. One-Line Diagram Menu Options (Available when One-Line Diagram is enabled) ............. 2-25

Figure 2-5. Breaker Hardware One-Line Diagram .................................................................................. 2-26

Figure 2-6. Rear Panel for DGC-2020 Hardware Version 3 .................................................................... 2-28

Figure 2-7. Rear Panel for DGC-2020 Hardware Versions 1 and 2. ....................................................... 2-30

Tables

Table 2-1. Front Panel HMI Descriptions .................................................................................................. 2-2

Table 2-2. Descriptions for Figure 2-6. Rear Panel for DGC-2020 Hardware Version 3. ....................... 2-29

Table 2-3. Descriptions for Figure 2-7. Rear Panel for DGC-2020 Hardware Versions 1 and 2. ........... 2-31

9400200990 Rev X DGC-2020 Human-Machine Interface i

ii DGC-2020 Human-Machine Interface 9400200990 Rev X

SECTION 2 • HUMAN-MACHINE INTERFACE

Introduction

This section describes the components of the DGC-2020 human-machine interface (HMI). DGC-2020
HMI components are located on the front panel (controls and indicators) and the rear panel (terminals and
connectors).

Front Panel

Figure 2-1 illustrates the front panel HMI of the DGC-2020. Table 2-1 lists the call-outs of Figure 2-1 along
with a description of each HMI component.

Figure 2-1. Front Panel HMI

9400200990 Rev X DGC-2020 Human-Machine Interface 2-1

Table 2-1. Front Panel HMI Descriptions

Locator

Description

A

Liquid Crystal Display. The backlit, 64 by 128 pixel LCD serves as the local information
maintained at −40°C.

B

Not in Auto Indicator. This red LED lights when the DGC-2020 is not oper at ing in Auto
mode.

C

Alarm Indicator. This red LED lights continuously during alarm conditions and flashes
during pre-alarm conditions.

D

Supplying Load Indicator. This green LED lights when the generator current is greater
than EPS threshold current.

E

Alarm Silence Pushbutton. Pressing this button opens the relay output programmed as
the horn output.

F

Lamp Test Pushbutton. Pressing this button tests the DGC-2020 indicators by exercising
all LCD pixels and lighting all LEDs.

G

Auto Pushbutton and Mode Indicator. Pressing the Auto button places the DGC -2 020 in
Auto mode. The green Auto mode LED lights when Auto mode is active.

H

Off Pushbutton and Mode Indicator. Pressing this button places the DGC-2020 in Off
resets the Breaker Management Pre-Alarms and al l MTU ECU Alar ms .

I

Run Pushbutton and Mode Indicator. Pressing this button places the DGC-2020 in Run
mode. The green Run mode LED lights when Run mode is active.

J

Reset Pushbutton. This button is pressed to cancel a settings editing session and disc ard

Maintenance or Maintenance Due Pre-Alarm.

K

Arrow Pushbuttons. These four buttons are used to navigate through the front panel

lower the value of the selected setting.

L

Edit Pushbutton. Pressing this button starts an editing session and enables changes to
pressed again to save the setting changes.

source for metering, alarms, pre-alarms, and protective functions. Display operation is

mode. The red Off mode LED lights when the DGC-2020 is in Off mode. This button also

any settings changes. When pressed momentarily, this button also resets the Breaker
Management Pre-Alarms and all MTU ECU Alarms. This button is also used to reset the
Maintenance Interval when pressed for 10 seconds while viewing Hours Until

display menus and modify settings.
The left- and right-arrow buttons are used to navigate through the menu levels. The right-

arrow button is pressed to move downward through the menu levels and the left-arrow
button is pressed to move upward.

Within a level, the up-arrow and down-arrow buttons are used to move among items
within the menu level. Pressing the down-arrow button moves to items lower in the list.
Pressing the up-arrow button moves to items higher in the list.

During a settings editing session, the up- and down-arrow buttons are used to raise and

DGC-2020 settings. At the conclusion of an editing session, the Edit pushbutton is

Display Operation

The front panel display is us ed to make settings changes and display metering valu es. Refer to call-outs
J, K, and L in Table 2-1 for information on changing settings through the front panel and navigating
through the Metering screens.

Login and Permissions

Login

To login, navigate to the SETTINGS, ENTER PASSWORD screen and press the Edit key. Use the
Up/Down arrow keys to scroll through the characters. Use the Left/Right arrow keys to enter more
characters. Once the pass word has been entered, pres s the Edit key to login. A LOGO UT selection now

2-2 DGC-2020 Human-Machine Interface 9400200990 Rev X

appears in the list of SETTING S. To logout, navigate to SETTING S > LOGOUT and press the Edit key.

• VOLT∗

Hz

• OIL

BATT

• NONE (Removes a line from the scrolling list)

GEN IB

• RTD IN X (X = 1 to 8) (with AEM-2020)

DEF 1 %

The LOGOUT selection is removed from the SETTINGS list.
If a front-panel key is not pressed for more than 15 minutes, the user is automatically logged out.

Permissions

If communications access is active through the modem or USB, the front panel will display REMOTE
COMMS, FRONT PANEL IS RE AD ONLY and the summary sc reen. This informs the user that the front
panel can only be used for viewing metering data and settings information. Remote access must be
ended before modifying settings through the front panel.

Summary Screen and Configurable Metering

The summary screen can be set to standard or scrolling. When set to standard, only the follow ing are
displayed:

• AMP∗

• PH∗

•

∗ When s et to standard, individual phas e information can be automatically t oggled at a rate set by the

Phase Toggle Delay settin g. Navigate to the SETTIN GS > G ENERAL SETT INGS > FRONT PANEL HMI
screen and edit PH TOG DELAY. When the Phase Toggle Delay is set to zero, information for each
phase is obtained by pressing the Up or Down arro w keys on the front panel HMI . When it is set to a
number other than zero, th e display will toggle thr ough the phases automat ically at the rate specif ied by
the Phase Toggle Delay Setting.

† When a Selective Catalytic Reduction (SCR) with Diesel Exhaust Fluid (DEF) exhaust after-treatment
system is implemented, the Summary screen automatically alternates the display of FUEL level and DEF
level.

When the summary screen is set to scrolling, you can select/configure the metering values that are
displayed. Up to 20 v alues can be d isplayed and thes e values will sc roll at a delay tim e specified by the
user. To select a stan dard or scrolling summar y, navigate to the S ETTINGS > GENER AL SETTINGS >
FRONT PANEL HMI screen and edit the SUMMARY VIEW. The SCROLL DELAY setting is also found on
this screen.

To select the scrolling val u es , nav ig ate to t he S ETT IN G S > GENERAL S ETT IN GS > FRONT PANEL HMI
screen and edit the CO NFIGURABLE METERING. The following items may be selecte d by th e us er to be
placed in the scrolling summary:

• BLANK (Shows nothing on this line)

• OIL P

• TEMP

• BATT V

• RPM

• RPM SRC

• FUEL

• RUN HRS

• GEN VAB

• GEN VBC

• GEN VCA

• GEN VAN

• GEN VBN

• GEN VCN

• BUS Hz

• BUS V

• GEN Hz

• GEN PF

• kWH

• GEN IA

•

• FUEL/DEF†

• TEMP

•

• THRM CPL X (X = 1 to 2) (with AEM-2020)

• FUEL DELV P

• kvar A

• kvar B

• kvar C

• kvar TOTAL

• INJ RAIL PRS

• TOTAL FUEL USED

• FUEL TEMP

• ENG OIL TEMP

• ENG INTCLR TEMP

• COOLANT PRESS

• FUEL RATE

• BOOST PRESS

• INTAK MNFLD TMP

• CHRG AIR TMP

• ENGINE % LOAD

• BUS VAB

• BUS VBC

• BUS VCA

•

9400200990 Rev X DGC-2020 Human-Machine Interface 2-3

• GEN IC

• kW A

ALG IN X (X = 1 to 8) (with AEM-2020)

• DEF 2 %

G

L

P0059-83

ENGINE
GENERATOR
POWER
BIAS CONTROL (Available when LSM-2020 is enabled.)
RUN STATISTICS
ALARMS-STATUS
DIAGNOSTICS

METERING

• kW B

• kW C

• kW TOT

• kVA A

• kVA B

• kVA C

• kVA TOT

• KW LD%

• ON LINE

• # UNITS

• SYS CAP

• SYS KW

• SY KVAR

• SYS TOTAL KW

• SYS GEN KW %

•

Sleep Mode

Sleep mode serves as a power sav ing featur e. If the DGC-2020 is in Off m ode or Auto mode n ot running
and a key is not press ed for more than 15 minutes, t he front panel LCD backlight an d LCD heater are
turned off. The DGC-2020 res umes normal display operation when any front panel button is pressed or
the genset is starte d remotely via the ATS input. T he DGC-2020 will not go to sleep while in an Alarm
state. If needed, Sleep mode can be permanently disabled via BESTCOMSPlus® or the front panel.

Changing a Setting

To change a setting, navigate to the setting you want to change and press the Edit key. If yo u are not
already logged in, you wi ll be as ked t o e nter y our password at this time. Us e the Up/Down arrows to raise
or lower the value. Press the Edit key again when finished.

Front Panel Display Structure

The front panel display begins with the SU MMARY SCREE N. Pressing the Right arrow key will open t he
MAIN MENU screen. The MAIN M ENU screen consists of MET ERING, SETTINGS, and, when enabled,

the ONE-LINE DIAGRAM, indicated by this symbol: The METERING screen branches are
shown in Figure 2-2. Details of the METERING screen branches follow Figure 2-2. The SETTINGS
screen branches are show n in Figure 2-3. Details of t he SETTINGS screen branches follow Figure 2-3.
The ONE-LINE DIAGRAM s c reen options are shown in Figure 2-4.

Figure 2-2. Metering Screen Branc hes

ENGINE

● OIL PRESSURE

● COOLANT TMP

● BATTERY VOLT

● RPM

● SPEED SRC

● FUEL LEVEL

● ENGINE LOAD

● COOLANT LEVL (Visible when CAN BUS is enabled.)

● TOTAL RUN TM

● HRS TO MAINT

● DEF TANK 1 LVL %

● DEF TANK 2 LVL %

2-4 DGC-2020 Human-Machine Interface 9400200990 Rev X

GENERATOR

● GEN CONNECT

● GEN VAB

● GEN VBC

● GEN VCA

● GEN VAN

● GEN VBN

● GEN VCN

● GEN FREQ

● GEN AMPS A

● GEN AMPS B

● GEN AMPS C

● BUS CONNECT

● BUS VAB

● BUS VBC (Visible when three-phase bus connection is selected.)

● BUS VCA (Visible when three-phase bus connection is selected.)

● BUS FREQ

● SYNCHRONIZER

○ SLIP ANGLE
○ DELTA HERTZ
○ DELTA VOLTS
○ STATUS

● MAX VECT SHIFT (Optional)

● MAX ROCOF (Optional)

● ROCOF (Optional)

POWER

● kW A

● kW B

● kW C

● kW TOTAL

● kVA A

● kVA B

● kVA C

● kVA TOTAL

● kvar A

● kvar B

● kvar C

● kvar TOTAL

● PF

BIAS CONTROL (Visible when LS M-2020 is enabled.)

● var MODE

● PF MODE

● BL LV SRC

● BASELOAD LVL

● kvar SRC

● kvar SETPT

● PF SRC

● PF SETPT

RUN STATISTICS

● CUMULATIVE

○ CUMULATIVE

■ START

■ # STARTS

■ HRS TO MAINT

■ kW-HRS

○ TOTAL RUN TIME

■ HOURS

■ MINUTES

9400200990 Rev X DGC-2020 Human-Machine Interface 2-5

○ LOADED RUN TIME

■ HOURS

■ MINUTES

○ UNLOADED RUN TIME

■ HOURS

■ MINUTES

● SESSION

○ SESSION

■ START

■ kW-HRS

○ TOTAL RUN TIME

■ HOURS

■ MINUTES

○ LOADED RUN TIME

■ HOURS

■ MINUTES

○ UNLOADED RUN TIME

■ HOURS

■ MINUTES

ALARMS-STATUS

● ACTIVE ALARMS

● ACTIVE PRE-ALARMS

● MTU FAULT CODES (Visible when ECU is configured for MTU MDEC, MTU ADEC, or MTU ECU7/ECU8.)

● MTU STATUS (Visible when ECU is configured for MTU MDEC, MTU ADEC, MTU ECU7/ECU8, or MTU Smart

Connect.)

○ NMT-ALIVE STATUS (Visible when ECU is configured for MTU MDEC or MTU ECU7/ECU8.)

■ SPS NODE

■ SW TYP

■ SW VAR

■ SW ED1

■ SW ED2

■ REV

■ SW MOD

○ TRIP FUEL (Visible when ECU is configured for MTU ECU7/ECU8.)

■ TRIP HRS

■ TRIP IDLE HRS

■ FUEL RATE

■ TRIP FL RATE

■ TOTAL RUN TM

■ DAILY FUEL

■ TOTAL FUEL

○ FUEL (Visible when ECU is configured for MTU ADEC.)

■ DAY TANK LVL

■ STORE TANK LVL

○ ENGINE STATUS (Visible when ECU is configured for MTU ADEC, MTU ECU7/ECU8, or MTU Smart

Connect.)

■ MTU FAULT CODES

■ ENG RUNNING

■ CYL CUTOUT

■ ENG OPTIMIZED (Visible when ECU is configured for MTU ADEC or MTU ECU7/ECU8.)

■ PREHT NT RCHD (Visible when ECU is configured for MTU ADEC or MTU ECU7/ECU8.)

■ SPEC TORQUE (Visible when ECU is configured for MTU ADEC or MTU ECU7/ECU8.)

■ SPD DMD FL MD (Visible when ECU is configured for MTU ADEC.)

■ CURR P DEGREE (Visible when ECU is configured for MTU ADEC.)

■ LOAD GEN ON (Visible when ECU is configured for MTU ADEC, MTU ECU7/ECU8, or MTU

Smart Connect.)

■ PRIME PUMP ON (Visible when ECU is configured for MTU ADEC.)

■ RUNUP SPD LO (Visible when ECU is configured for MTU ADEC.)

■ IDLE SPD LO (Visible when ECU is configured for MTU ADEC.)

■ CYL CUTOUT CD (Visible when ECU is configured for MTU ECU7/ECU8.)

■ RPM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ DROOP % (Visible when ECU is configured for MTU ECU7/ECU8 or MTU Smart Connect.)

■ ENG COOL TEMP (Visible when ECU is configured for MTU ECU7/ECU8.)

■ CHRG AIR TMP (Visible when ECU is configured for MTU ECU7/ECU8.)

■ INTRCOOLR TEMP (Visible when ECU is configured for MTU ECU7/ECU8.)

2-6 DGC-2020 Human-Machine Interface 9400200990 Rev X

■ ENG OIL TEMP (Visible when ECU is configured for MTU ECU7/ECU8.)

■ FUEL TEMP (Visible when ECU is configured for MTU ECU7/ECU8.)

■ ECU TEMP (Visible when ECU is configured for MTU ECU7/ECU8.)

■ OIL PRESSURE (Visible when ECU is configured for MTU ECU7/ECU8.)

■ CHG AIR P (Visible when ECU is configured for MTU ECU7/ECU8.)

■ FUEL DELV P (Visible when ECU is configured for MTU ECU7/ECU8.)

■ FL RAIL P (Visible when ECU is configured for MTU ECU7/ECU8.)

■ CAMSHAFT RPM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ IDLE RPM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ ECU SHUTDOWN (Visible when ECU is configured for MTU ECU7/ECU8.)

■ TOTAL RUN TM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ ECU SUPP VOLTS (Visible when ECU is configured for MTU ECU7/ECU8.)

■ INJCT DBR % (Visible when ECU is configured for MTU ECU7/ECU8.)

■ RATED RPM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ INJCT QTY (Visible when ECU is configured for MTU ECU7/ECU8.)

■ RATED KW (Visible when ECU is configured for MTU ECU7/ECU8.)

■ RESRV PWR % (Visible when ECU is configured for MTU ECU7/ECU8.)

■ START SEQ (Visible when ECU is configured for MTU ECU7/ECU8 or MTU Smart Connect.)

■ ECU OVRD FDBK (Visible when ECU is configured for MTU Smart Connect.)

■ COOLNT PRHT DONE (Visible when ECU is configured for MTU Smart Connect.)

■ REQ TORQUE (Visible when ECU is configured for MTU Smart Connect.)

■ EXT STOP (Visible when ECU is configured for MTU Smart Connect.)

■ OPERATING MODE (Visible when ECU is configured for MTU Smart Connect.)

○ SPEED (Visible when ECU is configured for MTU ADEC, MTU ECU7/ECU8, or MTU Smart Connect.)

■ SEL SPD DMD

■ EFF SET SPEED

■ CAN SPD DMD

■ ANLG SPD DMD

■ SPD DMD FL MD

■ RATED RPM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ RPM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ CAMSHAFT RPM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ IDLE RPM (Visible when ECU is configured for MTU ECU7/ECU8.)

■ SPD DMD SRC (Visible when ECU is configured for MTU ECU7/ECU8.)

■ FREQ RPM DMD (Visible when ECU is configured for MTU ECU7/ECU8.)

○ SIGNL FEEDBK (Visible when ECU is configured for MTU ADEC, MTU ECU7/ECU8, or MTU Smart

Connect.)

■ ECU_OVRD_FDBK

■ EXT STOP

■ SPD UP IN

■ SPD DN IN

■ CAN MODE FDBK

■ CYL CUTOUT (Visible when ECU is configured for MTU ECU7/ECU8.)

○ DIAGNOSTICS (Visible when ECU is configured for MTU ECU7/ECU8.)

■ AL PWR AMP 1

■ AL PWR AMP 2

■ XSTR OUT AL

■ XSTR OUT STS

■ ECU SHUTDOWN

○ CAN Bus (Visible when ECU is configured for MTU ECU7/ECU8.)

■ CAN MODE FDBK

■ CAN NODES

■ LOST NODES

○ LIMITS (Visible when ECU is configured for MTU ECU7/ECU8.)

■ OIL PRESSURE

■ LO LIM OILP

■ LOLOLIM OILP

■ ENG COOL TEMP

■ CLNT LMT HI

■ CLNT LMT HIHI

■ CHRG AIR TMP

■ CHG AIR LMT HI

■ ECU SUPP VOLTS

■ L1L ECU VOLTS

■ L2L ECU VOLTS

■ U1L ECU VOLTS

■ U2l ECU VOLTS

9400200990 Rev X DGC-2020 Human-Machine Interface 2-7

■ INTRCOOLR TMP

■ INTCLR LMT HI

● STATUS

○ AUTO XFER SWITCH (Visible when the Auto Transfer Switch programmable function is configured to

be driven by an input.)

○ EPS SUPP. LOAD
○ GEN BREAKER
○ MAINS BREAKER
○ BATTLE OVERRIDE (Visible when the Battle Override programmable function is configured to be

driven by an input.)

○ LOW LINE OVERRIDE (Visible when the Low Line Override programmable function is configured to be

driven by an input.)

○ LOW COOL LEVEL (Visible when the Low Coolant Level programmable function is configured to be

driven by an input.)

○ BATT CHRG FAIL (Visible when the Battery Charger Fail programmable function is configured to be

driven by an input.)

○ FUEL LEAK DETECT (Visible when the Fuel Leak Detect programmable function is configured to be

driven by an input.)

○ GRND DELTA O-RIDE (Visible when Generator Connection is configured for Delta and the Grounded

Delta Override programmable function is configured to be driven by an input.)

○ 1 PHASE O-RIDE (Visible when the 1-Phase Override programmable function is configured to be driven

by an input.)

○ 1 PHASE AC O-RIDE (Visible when the 1-Phase AC Override programmable function is configured to

be driven by an input.)

○ BUS DEAD
○ BUS STABLE
○ BUS FAILED
○ BUS FWD ROT
○ BUS REV ROT
○ GEN DEAD
○ GEN STABLE
○ GEN FAILED
○ GEN FWD ROT
○ GEN REV ROT
○ ENG RUNNING
○ CLDN TMR ACTVE
○ OFF MODE COOLDN
○ COOLDN REQ
○ COOL & STOP REQ
○ var MODE
○ PF MODE
○ EXT START DEL
○ START DEL BYPASS
○ ALT FRQ O-RIDE
○ RESET
○ ALARM SILENCE
○ LAMP TEST
○ IDLE REQUEST
○ LOAD TAKEOVER
○ MAINS FAIL TEST
○ SYNCHRONIZING
○ SYNC VOLT OK
○ SYNC SLIP FRQ OK
○ SYNC ANGLE OK
○ SYNC BRK CL OK
○ PARALLEL TO MAINS
○ LSM CONNECTED
○ CEM CONNECTED
○ AEM CONNECTED

● INPUTS

○ INPUT X (X = 1 to 16 (17 to 26 optional))

● OUTPUTS

○ START
○ RUN
○ PRESTART
○ OUTPUT X (X = 1 to 12 (13 to 36 optional))

2-8 DGC-2020 Human-Machine Interface 9400200990 Rev X

● LOGIC CTL RELAYS

○ LCR X (X = 1 to 16)

● LSM INPUTS (Visible when LSM-2020 is enabled.)

○ SCALED
○ RAW

■ LSM IN

● ANALOG INPUTS (Visible when AEM-2020 is enabled.)

○ SCALED

■ ALG IN X (X = 1 to 8)

○ RAW

■ ALG IN X (X = 1 to 8)

● THERMAL INPUTS (Visible when AEM-2020 is enabled.)

○ SCALED

■ RTD IN X (X = 1 to 8)

■ THRM CPL X (X = 1 to 2)

○ RAW

■ RTD IN X (X = 1 to 8)

■ THRM CPL X (X = 1 to 2)

● ANALOG OUTPUTS (Visible when AEM-2020 is enabled.)

○ SCALED

■ ALG OUT X (X = 1 to 4)

○ RAW

■ ALG OUT X (X = 1 to 4)

● ANALOG STATUS (Visible when AEM-2020 is enabled.)

● CONF ELEMENTS

○ CONFIG ELEMENT X (X = 1 to 8)

● CONF PROT STATUS

● EVENT LOG

○ [EVENT NAME]

■ ACTIVE

■ OCCURRENCE COUNT

■ FIRST DATE

■ FIRST TIME

■ LAST DATE

■ LAST TIME

■ FIRST ENG HRS

■ LAST ENG HRS

■ DETAILS

□ OCCURRENCE (Use the Edit/Up/Down keys to change the occurrence.)
□ DATE
□ TIME
□ ENG HRS

■ CLEAR EVENT (Visible when logged in through the front panel.)

● J1939 DATA (Visible when CAN bus is enabled and ECU is configured for Standard, Volvo Penta, MTU ADEC,

GM/Doosan, Cummins, Scania, or John Deere.)

○ THROTTLE POSITN
○ LOAD @ CRNT RPM
○ ACTUAL ENG TORQ
○ ENGINE SPEED
○ INJ CNTRL PRESS
○ INJ RAIL PRS
○ ENGINE HOURS
○ TRIP FUEL
○ TOTAL FUEL USED
○ ENG COOLANT TEMP
○ FUEL TEMP
○ ENG OIL TEMP
○ ENG INTCLR TEMP
○ FUEL DELV P
○ ENG OIL LEVEL
○ ENG OIL PRESS
○ COOLANT PRESS
○ COOLANT LEVEL
○ FUEL RATE
○ BAROMETRIC PRESS
○ AMB AIR TEMP
○ AIR INLET TEMP

9400200990 Rev X DGC-2020 Human-Machine Interface 2-9

○ BOOST PRESS
○ INTAK MNFLD TEMP
○ AIR FLTR DIF PRS
○ EXHAUST GAS TEMP
○ BATTERY VOLTAGE
○ ECU INPUT VOLTS
○ TRANS OIL PRESS
○ TRANS OIL TEMP
○ WINDG 1 TEMP
○ WINDG 2 TEMP
○ WINDG 3 TEMP
○ ECU TEMP
○ AUX PRESSURE1
○ AUX PRESSURE2
○ RATED KW
○ RATED RPM
○ EXHAUST TMP A
○ EXHAUST TMP B
○ CHRG AIR TMP
○ FUEL 1 LEAK
○ FUEL 2 LEAK
○ ALARM RST FDBK
○ ECU SHUTDOWN
○ DEF TANK 1 LVL %
○ DEF TANK 2 LVL %

● J1939 ENGINE CONFIG (Visible when ECU is configured for Standard, Volvo Penta, MTU ADEC, GM/Doosan,

or Cummins.)

○ SPD @ IDLE PNT 1
○ TRQ @ IDLE PNT 1
○ SPD @ PNT 2
○ TRQ @ PNT 2
○ SPD @ PNT 3
○ TRQ @ PNT 3
○ SPD @ PNT 4
○ TRQ @ PNT 4
○ SPD @ PNT 5
○ TRQ @ PNT 5
○ SPD @ PNT 6
○ ENDSPEED GOV KP
○ REF ENG TORQUE
○ O-RIDE SPD PNT 7
○ O-RIDE TIME LMT
○ SPEED LOWER LMT
○ SPEED UPPER LMT
○ TORQUE LOWER LMT
○ TORQUE UPPER LMT

● J1939 ACTIVE DTC (Visible when D TC supp or t is enab led a nd any ECU type is sel ect ed.)

○ CLEAR DTCs

● J1939 PREV DTC (Visible when DTC support is enabled and any ECU type is selected.)

○ CLEAR DTCs

● NETWORK STATUS (Visible when Multiple Generator is selected as System Type.)

○ SYSTEM MANAGER (Displays “0” when LSM-2020 is not connected.)
○ NUMBER OF UNITS (Displays “0” when LSM-2020 is not connected.)
○ ID (Visible when LSM-2020 is connected.)
○ NUM ON LINE (Displays “0” when LSM-2020 is not connecte d.)
○ ID X (X = 1 to 16) (The ID of each online unit is displayed)
○ SYS KW CAP
○ SYS GEN KW
○ SYS GEN KVAR

● SEQUENCING STATUS (Visible when Demand Start/Stop is enabled.)

○ NEXT TO START (Displays “0” when LSM-2020 is not connected.)
○ NEXT TO STOP (Displays “0” when LSM-2020 is not connected.)
○ START TMR 1
○ START TMR 2
○ STOP TIMER
○ WATT DEMAND
○ MODE

2-10 DGC-2020 Human-Machine Interface 9400200990 Rev X

○ SEQUENCE ID (Displays “0” when LSM-2020 is not connected.)

P0059-82

GENERAL SETTINGS
COMMUNICATIONS
SYSTEM PARAMS
PROGRAMMABLE INPUTS
PROGRAMMABLE OUTPUTS
CONFIG PROTECTION
ALARM CONFIGURATION
GENERATOR PROTECTION
BREAKER MANAGEMENT
BIAS CONTROL
MULTIGEN MANAGEMENT (Available when LSM-2020 is enabled.)
LOGIC TIMERS
ENTER PASSWORD

SETTINGS

○ SYSTEM MANAGER (Displays “0” when LSM-2020 is not connec ted.)
○ START LVL 1
○ START LVL 2
○ STOP LVL
○ START TD 1
○ START TD 2
○ STOP TD

● MAINS FAIL TRANSFER (Visible when Mains Fail Transfer is enabled.)

○ MAINSFAIL XFER STATE

■ DISABLED ( The possible mains fail transfer states are as follows: Power From Mains,

Transfer Timer Active, Transferring to Gens, Power From Gens, Return Timer Active,
Transferring to Mains, Disabled (when DGC is in OFF or RUN modes, or in the alarm state))

○ TRANSFER DELAY (Visible when actively counting and relevant to mains fail transfer.)
○ RETURN DELAY (Visible when actively counting and relevant to mains fail transfer.)
○ MAX TRANSFER TIME (Visible when actively counting and relevant to mains fail transfer.)
○ MAX PARALLEL TIME (Visible when actively counting and relevant to mains fail transfer.)
○ OPEN TRANS DELAY (Visible when actively counting and relevant to mains fail transfer.)

DIAGNOSTICS

● MODBUS RD

● MODBUS WR

● FLASH WR

Figure 2-3. Settings Screen Branches

GENERAL SETTINGS

● FRONT PANEL HMI

● CONFIGURE DATE/TIME

9400200990 Rev X DGC-2020 Human-Machine Interface 2-11

○ SUMMARY VIEW
○ SCROLL DELAY
○ PH TOG DELAY
○ LCD CONTRAST
○ SLEEP MODE
○ LANGUAGE
○ CONFIGURABLE METERING

■ ITEM X (X = 1 to 20)

○ ONE-LINE DIAGRAM
○ YEAR

○ MONTH
○ DAY
○ HOURS

○ MINUTES
○ SECONDS
○ UTC OFFSET
○ DST ENABLED
○ CLK NOT SET WRN

● VIEW DATE/TIME

● VERSION INFO

○ DGC-2020

■ FIRMWARE VERSION

■ BOOT CODE VERSION

■ SERIAL NUMBER

■ PART NUMBER

■ MODEL NUMBER

■ LANGUAGE VERSION

■ LANGUAGE PART NUM

■ STYLE CODE

○ LSM-2020 (Visible when LSM-2020 is enabled.)

■ VERSION INFO

■ TCP/IP SETTINGS

○ CEM-2020 (Visi ble when CEM-2020 is enabled.)

■ FIRMWARE VERSION

■ BOOT CODE VERSION

■ SERIAL NUMBER

■ PART NUMBER

■ MODEL NUMBER

■ BUILD DATE

○ AEM-2020 (Visible when AEM-2020 is enabled.)

■ FIRMWARE VERSION

■ BOOT CODE VERSION

■ SERIAL NUMBER

■ PART NUMBER

■ MODEL NUMBER

■ BUILD DATE

□ FIRMWARE VERSION
□ BOOT CODE VERSION

□ IP ADDRESS
□ SUBNET MASK
□ GATEWAY ADDRESS
□ DHCP ENABLE

● CAN Bus SETUP

○ CAN Bus SETUP

■ CAN Bus ENABLE

■ DTC ENABLE (Visible when CAN bus is enabled.)

■ SPN CONV METHOD (Visib le when CAN bus is enabled.)

■ CAN Bus ADDR (Visible when CAN bus is enabled.)

■ ECU OPT SLCT (Visible when CAN bus is enabled.)

■ ECU PULSING (Visible when CAN bus is enabled.)

■ ENG SHTDN TM (Visible when CAN bus is enabled.)

■ PLS CYCL TM (Visible when CAN bus is enabled.)

■ ECU SET TM (Visible when CAN bus is enabled. )

■ RESP TIMEOUT (Visible when CAN bus is enabled.)

○ ECU SETUP (Visible when CAN bus is enabled.)

■ ECU CONF

■ GEN DATA TRANSMIT (Visible when ECU is configured for Standard, Volvo Penta, MTU

■ ENGINE PARAM XMT

■ TRIP RESET (Visible when ECU is configured for Standard, Volvo Penta, MTU ADEC,

■ DPF REGENRATE SETUP (Visible when ECU is configured for Standard, Volvo Penta, MTU

■ SPEED SELECT (Visible when ECU is configured for Volvo Penta.)

■ ACCEL POSITION (Visible when ECU is configured for Volvo Penta.)

COMMUNICATIONS

ADEC, GM/Doosan, Cummins, or MTU Smart Connect.)

GM/Doosan, Cummins, or MTU Smart Connect.)
ADEC, GM/Doosan, Cummins, or MTU Smart Connect.)

□ DPF MANUAL REGEN
□ DPF REGEN DISABLE

2-12 DGC-2020 Human-Machine Interface 9400200990 Rev X

■ MODULE TYPE (Visible when ECU is configured for MTU MDEC or MTU ECU7/ECU8.)

■ ALIVE MSG (Visible when ECU is configured for MTU MDEC or MTU ECU7/ECU8.)

■ SPEED SETUP (Visible when ECU is configured for (MTU ADEC, MTU MDEC 304, MTU

■ ECU SETUP (Visible when ECU is configured for MTU ADEC, MTU ECU7/ECU8, or MTU

● MODEM SETUP

○ DIALOUT X (X = 1 TO 4)
○ PAGER ID X (X = 1 TO 4)
○ RINGS FOR ANSWER
○ OFFLN DELAY
○ DIALOUT DLY
○ PGR BUFF LMT
○ PGR COM

● RS485 SETUP

○ COMM BAUD
○ COMM PARITY
○ MODBUS ADDR
○ LEGACY MODBUS

ECU7/ECU8, or MTU Smart Connect.)

□ J1939 RPM ENABLE (Visible when ECU is configured for Standard, Volvo Penta,

MTU ADEC, GM/Doosan, Cummins, or MTU Smart Connect.)

□ ENGINE RPM
□ RPM BAND WIDTH
□ IDLE RPM
□ SPEED UP (Visible when ECU is configured for MTU ADEC, MTU MDEC 304, MTU

ECU7/ECU8, or MTU Smart Connect.)

□ SPEED DN (Visible when ECU is configured for MTU ADEC, MTU MDEC 304, MTU

ECU7/ECU8, or MTU Smart Connect.)

□ TEST OVRSPEED (Visible when ECU is configured for MTU ADEC, MTU MDEC

304, MTU ECU7/ECU8, or MTU Smart Connect.)

□ SPD DMAND SRC (Visible when ECU is configured for MTU MDEC 304, MTU

ECU7/ECU8, or MTU Smart Connect.)

□ IDLE REQUEST (Visible when ECU is configured for MTU MDEC 304, MTU

ECU7/ECU8, or MTU Smart Connect.)

□ INCREASE IDLE (Visible when ECU is configured for MTU MDEC 304, or MTU

ECU7/ECU8.)

Smart Connect.)

□ TRIP RESET (Visible when ECU is configured for MTU ECU7/ECU8.)
□ INT OIL PRIME
□ GOV PRM SW (Visible when ECU is configured for MTU ADEC or MTU Smart

Connect.)

□ ENG STRT PRIME (Visible when ECU is configured for MTU ECU7/ECU8.)
□ FAN OVERRIDE (Visible when ECU is configured for MTU ECU7/ECU8.)
□ MODE SWITCH (Visible when ECU is configured for MTU ECU7/ECU8.)
□ GOV PARAM SET (Visible when ECU is configured for MTU ECU7/ECU8.)
□ CAN RATING SW 1 (Visible when ECU is configured for MTU ECU7/ECU8.)
□ CAN RATING SW 2 (Visible when ECU is configured for MTU ECU7/ECU8.)
□ DIS CYL CUT 1 (Visible when ECU is configured for MTU ECU7/ECU8.)
□ DIS CYL CUT 2 (Visible when ECU is configured for MTU ECU7/ECU8 or MTU Smart

Connect.)

□ OPERATING MODE (Visible when ECU is configured for MTU Smart Connect.)

SYSTEM PARAMS

● SYSTEM SETTINGS

○ GEN CONNECT
○ BUS CONNECT
○ RATED kW
○ RATED VOLTS
○ RATED FREQ
○ ALTRNATE FRQ
○ RATED RPM
○ RATED PF
○ ROTATION
○ SYSTEM TYPE

9400200990 Rev X DGC-2020 Human-Machine Interface 2-13

○ EPS

■ EPS THRESHLD

■ LOW LINE SF (Visible when an input is selected for the Low Line Override programmable

function.)

○ FUEL LEVEL SETUP

■ FUEL LVL TYP

■ FUEL LVL SRC (Visible when AEM-2020 is enabled)

■ FL MAX ALG % (Visible when AEM-2020 is enabled)

■ FL MIN ALG % (Visible when AEM-2020 is enabled)

○ SYSTEM UNITS
○ PRESSURE UNITS (Visible when Metric is selected for System Units.)
○ BATTERY VOLT
○ FLYWHL TEETH
○ SPEED SOURCE
○ MAINT RESET
○ NFPA LEVEL
○ POWER UP DELAY

● REMOTE MODULE SETUP

○ LSM SETUP

■ ENABLE

■ CAN Bus ADDRESS (Visible when LSM-2020 is enabled.)

■ AUX IN SRC

■ VERSION INFO (Visible when LSM-2020 is enabled.)

□ FIRMWARE VERSION
□ BOOT CODE VERSION

■ TCP/IP SETTINGS (Visible when LSM-2020 is enabled.)

□ IP ADDRESS
□ SUBNET MASK
□ GATEWAY ADDRESS
□ DHCP ENABLE

■ LOAD SHARE DEBUG (Visible when LSM-2020 is enabled.)

□ FDBK VOLT
□ AUX VOLT
□ AUX CURR
□ SPEED BIAS
□ VOLT BIAS
□ WATT DEMAND
□ kW TOTAL
□ RATED kW
□ var DEMAND
□ kvar TOTAL
□ RATED kvar
□ LSM RT BIN
□ DGC RT BIN

○ CEM SETUP

■ ENABLE

■ OUTPUTS (Visible when CEM-2020 is enabled.)

■ CAN Bus ADDR (Visible when CEM-2020 is enabled.)

■ VERSION INFO (Visible when CEM-2020 is enabled.)

□ FIRMWARE VERSION
□ BOOT CODE VERSION
□ SERIAL NUMBER
□ PART NUMBER
□ MODEL NUMBER
□ BUILD DATE

■ CEM DEBUG MENU (Visible when CEM-2020 is enabled.)

□ DGC TO CEM BP
□ CEM TO DGC BP

○ AEM SETUP

■ ENABLE

■ CAN Bus ADDR (Visible when AEM-2020 is enabled.)

■ VERSION INFO (Visible when AEM-2020 is enabled.)

□ FIRMWARE VERSION
□ BOOT CODE VERSION
□ SERIAL NUMBER
□ PART NUMBER

2-14 DGC-2020 Human-Machine Interface 9400200990 Rev X

□ MODEL NUMBER
□ BUILD DATE

■ AEM DEBUG MENU (Visible when AEM-2020 is enabled.)

□ DGC TO AEM BP
□ AEM TO DGC BP
□ ANALOG INPUTS

□ THERMAL INPUTS

□ ANALOG OUTPUTS

● CRANK SETTINGS

○ DISCNCT LMIT
○ PRECRNK DELY
○ PRESTRT CNTCT
○ STYLE
○ # CYCLES (Visible when Cycle is selected for Cranking Style.)
○ CONT TIME (Visible when Continuous is selected for Cranking Style.)
○ CYCLE TIME
○ COOLDWN TIME
○ OFF MODE COOLDN
○ PRESTART REST CONFIG

■ CONF

○ OIL PRS CRANK DISC

■ ENABLE

■ CRANK DISC PRS

● AUTOMATIC RESTART

○ ENABLE
○ ATTEMPTS
○ INTERVAL

● EXERCISE TIMER

○ MODE
○ RUN WITH LOAD
○ START HOUR
○ START MINUTE
○ RUN HOURS
○ RUN MINUTES

● SENSING TRANS

○ GEN PT PRI V
○ GEN PT SEC V
○ GEN CT PRI A
○ CT LOW LINE SF (Visible when an input is selected for the Low Line Override programmable function.)
○ BUS PT PRI V
○ BUS PT SEC V

● RELAY CONTROL

○ START
○ RUN
○ PRESTART

● AUTO CONFIG DETECT

○ ENABLE
○ LOW LINE THRESH
○ 1-PH THRESH
○ 1-PH GEN CONN

● ENGINE STATISTICS

○ START YEAR

♦ SCALED

◊ ALG IN X (X = 1 TO 8)

♦ RAW

◊ ALG IN X (X = 1 TO 8)

♦ SCALED

◊ RTD IN X (X = 1 TO 8
◊ THRM CPL X (X = 1 TO 2)
◊ AMBIENT

♦ RAW

◊ RTD IN X (X = 1 TO 8
◊ THRM CPL X (X = 1 TO 2)

♦ SCALED

◊ ALG OUT X (X = 1 TO 4)

♦ RAW

◊ ALG OUT X (X = 1 TO 4)

9400200990 Rev X DGC-2020 Human-Machine Interface 2-15

○ START MONTH
○ START DAY
○ # STARTS
○ HRS TO MAINT
○ kW-HRS
○ TOTAL HRS
○ LOADED HRS
○ UNLOADED HRS

PROGRAMMABLE INPUTS

● CONFIGURABLE INPUTS

○ INPUT X (X = 1 to 26)

■ ALARM CONFIG

■ ACTIVATN DLY

■ RECOGNITION

■ NAME

● PROG FUNCTIONS

○ AUTO XFER SWITCH

■ INPUT

○ GRND DELTA O-RIDE

■ INPUT

■ RECOGNITION (Visible when an INPUT is selected.)

○ BATTLE OVERRIDE

■ INPUT

■ RECOGNITION (Visible when an INPUT is selected.)

○ LOW LINE OVERRIDE

■ INPUT

■ RECOGNITION (Visible when an INPUT is selected.)

○ 1 PHASE O-RIDE

■ INPUT

■ RECOGNITION (Visible when an INPUT is selected.)

■ 1 PH O-RIDE CFG (Visible when an INPUT is selected.)

○ 1 PHASE AC O-RIDE

■ INPUT

■ RECOGNITION (Visible when an INPUT is selected.)

○ BATT CHRG FAIL

■ INPUT

■ ALARM CONFIG (Visible when an INPUT is selected.)

■ ACTIVATN DLY (Visible when an INPUT is selected.)

○ LOW COOL LEVEL

■ INPUT

■ ALARM CONFIG (Visible when an INPUT is selected.)

■ ACTIVATN DLY (Visible when an INPUT is selected.)

○ FUEL LEAK DETECT

■ INPUT

■ ALARM CONFIG (Visible when an INPUT is selected.)

■ ACTIVATN DLY (Visible when an INPUT is selected.)

● LSM INPUTS (Visible when LSM-2020 is enabled.)

○ ALG IN 1

■ INPUT TYPE

■ MIN VOLTAGE

■ MAX VOLTAGE

■ MIN CURRENT

■ MAX CURRENT

● ANALOG INPUTS (Visible when AEM-2020 is enabled.)

○ ALG IN X (X = 1 to 8)

■ INPUT TYPE

■ MIN VOLTAGE

■ MAX VOLTAGE

■ MIN CURRENT

■ MAX CURRENT

■ PARAM MIN

■ PARAM MAX

■ OVER 1

□ THRESHOLD
□ ALARM CONFIG

2-16 DGC-2020 Human-Machine Interface 9400200990 Rev X

■ OVER 2

□ THRESHOLD
□ ALARM CONFIG

■ UNDER 1

□ THRESHOLD
□ ALARM CONFIG

■ UNDER 2

□ THRESHOLD
□ ALARM CONFIG

■ ARMING DELAY

■ THR1 ACT DLY

■ THR2 ACT DLY

■ HYSTERESIS

■ OOR ALM CFG

■ NAME

● THERMAL INPUTS (Visible when AEM-2020 is enabled.)

○ RTD IN X (X = 1 to 8)

■ TYPE

■ OVER 1

□ THRESHOLD
□ ALARM CONFIG

■ OVER 2

□ THRESHOLD
□ ALARM CONFIG

■ UNDER 1

□ THRESHOLD
□ ALARM CONFIG

■ UNDER 2

□ THRESHOLD
□ ALARM CONFIG

■ ARMING DELAY

■ THR1 ACT DLY

■ THR2 ACT DLY

■ HYSTERESIS

■ OOR ALM CFG

■ NAME

○ THRM CPL X (X = 1 to 2)

■ OVER 1

□ THRESHOLD
□ ALARM CONFIG

■ OVER 2

□ THRESHOLD
□ ALARM CONFIG

■ UNDER 1

□ THRESHOLD
□ ALARM CONFIG

■ UNDER 2

□ THRESHOLD
□ ALARM CONFIG

■ ARMING DELAY

■ THR1 ACT DLY

■ THR2 ACT DLY

■ HYSTERESIS

■ OOR ALM CFG

■ NAME

PROGRAMMABLE OUTPUTS

● OUTPUTS

○ OUTPUT X (X = 1 to 12) (X = 1 to 36 when CEM-2020 is enabled.)

■ NAME

● CONFIG ELEMENTS

○ CONFIG ELEMENT X (X = 1 to 8)

■ ALARM CONFIG

■ ACTIVATN DLY

■ RECOGNITION

■ NAME

9400200990 Rev X DGC-2020 Human-Machine Interface 2-17

● ANALOG OUTPUTS (Visible when AEM-2020 is enabled.)

○ ANALOG OUTPUT X (X = 1 to 4)

■ OUTPUT TYPE

■ MIN VOLTAGE

■ MAX VOLTAGE

■ MIN CURRENT

■ MAX CURRENT

■ PARAM MIN

■ PARAM MAX

■ OOR ALM CFG

■ OOR ACT DLY

■ PARAM

CONFIG PROTECTION

● SCALE FACTORS

○ ALT FREQ SF
○ VOLT LO LINE SF
○ AMPS LO LINE SF

● CONFIG PROT X (X = 1 to 9)

○ PARAM
○ OVER 1

■ THRESHOLD

■ ALARM CONFIG

○ OVER 2

■ THRESHOLD

■ ALARM CONFIG

○ UNDER 1

■ THRESHOLD

■ ALARM CONFIG

○ UNDER 2

■ THRESHOLD

■ ALARM CONFIG

○ ARMING DELAY
○ THR1 ACT DLY
○ THR2 ACT DLY
○ HYSTERESIS
○ NAME

● HORN CONFIGURATION

○ HORN
○ NOT IN AUTO HORN

● PRE-ALARMS

○ HIGH COOLANT TEMP

■ ENABLE

■ THRESHOLD

○ LOW COOLANT TEMP

■ ENABLE

■ THRESHOLD

○ LOW OIL PRESSURE

■ ENABLE

■ THRESHOLD

○ LOW FUEL LEVEL

■ ENABLE

■ THRESHOLD

○ ENGINE OVERLOAD

■ ENG kW OVRLD-X (X = 1 to 3)

□ ENABLE
□ LOW LINE SF (Visible when an input is selected for the Low Line Override

programmable function.)

□ 3 PHASE SETTINGS

ALARM CONFIGURATION

♦ THRESHOLD
♦ HYSTERESIS

2-18 DGC-2020 Human-Machine Interface 9400200990 Rev X

○ MAINTENANCE INTERVAL

○ BATTERY OVERVOLTAGE

○ LOW BATTERY VOLTAGE

○ WEAK BATTERY VOLTAGE

○ HIGH FUEL LEVEL

○ ACTIVE DTC (Visible when DTC is enabled.)
○ ECU COMMS FAIL (Visible when CAN bus is enabled.)
○ COOLANT LEVEL (Visible when CAN bus is enabled.)

○ AVR OUTPUT LIMIT (Visible when LSM-2020 is enabled.)

○ GOV OUTPUT LIMIT (Visible when LSM-2020 is enabled.)

○ INTERGENSET COMM FAIL (Visible when LSM-2020 is enabled.)
○ LSM COMM FAIL (Visible when LSM-2020 is enabled.)
○ CEM COMM FAIL (Visible when CEM-2020 is enabled.)
○ AEM COMM FAIL (Visible when AEM-2020 is enabled.)
○ ID MISSING (Visible when LSM-2020 is enabled.)
○ ID REPEAT (Visible when LSM-2020 is enabled.)
○ CHECKSUM FAIL
○ SYNC FAIL PALM
○ BRK CLOSE FAIL PALM

○ BRK OPEN FAIL PALM

○ REVERSE ROTATION

• ALARMS

○ HIGH COOLANT TEMP

○ LOW OIL PRESSURE

□ 1 PHASE SETTINGS

♦ THRESHOLD
♦ HYSTERESIS

■ ENABLE

■ THRESHOLD

■ ENABLE

■ THRESHOLD

■ ENABLE

■ THRESHOLD

■ ACTIVATN DLY

■ ENABLE

■ THRESHOLD

■ ACTIVATN DLY

■ ENABLE

■ THRESHOLD

■ ACTIVATN DLY

■ ENABLE

■ ENABLE

■ ENABLE

■ THRESHOLD

■ ENABLE

■ ACTIVATN DLY

■ ENABLE

■ ACTIVATN DLY

■ ENABLE

■ ENABLE

■ ENABLE

■ ENABLE

■ ENABLE

■ ENABLE

■ ENABLE

■ ENABLE

■ ENABLE

■ MONITOR

■ ENABLE

■ MONITOR

■ ENABLE

■ ENABLE

■ THRESHOLD

■ ARMING DELAY

■ ENABLE

■ THRESHOLD

■ ARMING DELAY

9400200990 Rev X DGC-2020 Human-Machine Interface 2-19

○ LOW FUEL LEVEL

■ ENABLE

■ THRESHOLD

■ ACTIVATN DLY

○ OVERSPEED

■ ENABLE

■ THRESHOLD

■ ACTIVATN DLY

○ COOLANT LEVEL (Visible when CAN bus is enabled.)

■ ENABLE

■ THRESHOLD

The HIGH COOLANT TEMP and LOW OIL PRESSURE alarms have an
ARMING DELAY setting that disables the alarm for the specified time after
engine startup.

● SENDER FAIL

○ COOL TEMP SENDR FAIL

■ CONFIG TYPE

■ ACTIVATN DLY

○ OIL PRESS SENDR FAIL

■ CONFIG TYPE

■ ACTIVATN DLY

○ FUEL LEVL SENDR FAIL

■ CONFIG TYPE

■ ACTIVATN DLY

○ VOLTAGE SENSE FAIL

■ CONFIG TYPE

■ ACTIVATN DLY

○ SPEED SENDR FAIL

■ TIME DELAY

NOTE

● 27 UNDERVOLTAGE

○ 27-1 / 27-2

■ LOW LINE SF (Visible when an input is selected for the Low Line Override programmable

function.)

■ 3 / 1 PHASE SETTINGS

□ PICKUP
□ HYSTERESIS
□ TIME DELAY
□ FREQ INHIBIT
□ ALARM CONFIG

● 59 OVERVOLTAGE

○ 59-1 / 59-2

■ LOW LINE SF (Visible when an input is selected for the Low Line Override programmable

function.)

■ 3 / 1 PHASE SETTINGS

□ PICKUP
□ HYSTERESIS
□ TIME DELAY
□ ALARM CONFIG

● 47 PHASE IMBALANCE (Optional)

○ PICKUP
○ HYSTERESIS
○ TIME DELAY
○ ALARM CONFIG
○ LOW LINE SF (Visible when an input is selected for the Low Line Override programmable function.)

● 81 O/U FREQUENCY

○ UNDERFREQUENCY

■ INHIBIT VOLTS

■ PICKUP

GENERATOR PROTECTION

2-20 DGC-2020 Human-Machine Interface 9400200990 Rev X

■ HYSTERESIS

■ TIME DELAY

■ ALARM CONFIG

○ OVERFREQUENCY

■ PICKUP

■ HYSTERESIS

■ TIME DELAY

■ ALARM CONFIG

○ ALTRNT FRQ SCALE FCTR

■ ALT FREQ SF

● 51 OVERCURRENT (Optional)

○ 51-1 / 51-2 / 51-3

■ LOW LINE SF (Visible when an input is selected for the Low Line Override programmable

function.)

■ 3 / 1 PHASE SETTINGS

□ PICKUP
□ TIME DIAL
□ CURVE
□ ALARM CONFIG
□ RESET TYPE

■ PROG CURVE CONSTANTS

□ A
□ B
□ C
□ N
□ R

● 32 REVERSE POWER

○ 3 / 1 PHASE SETTINGS

■ PICKUP

■ HYSTERESIS

■ TIME DELAY

■ ALARM CONFIG

● 40 LOSS OF EXCITATION

○ 3 / 1 PHASE SETTINGS

■ PICKUP

■ HYSTERESIS

■ TIME DELAY

■ ALARM CONFIG

● LOSS OF MAINS PROTECT (Optional)

○ 78 VECTOR SHIFT

■ PICKUP

■ ALARM CONFIG

■ OPEN MAINS ON TRP

■ OPEN GEN ON TRP

○ 81 ROCOF

■ PICKUP

■ TIME DELAY

■ ALARM CONFIG

■ OPEN MAINS ON TRP

■ OPEN GEN ON TRP

BREAKER MANAGEMENT

● BREAKER HARDWARE

○ MAINS FAIL TRANSFER

■ ENABLE

■ RETURN DELAY

■ TRANSFER DELAY

■ MAX TRANSFER TIME

■ TRANSFER TYPE

■ IN PHASE MON EN

■ MAX PARALLEL TIME

○ CLOSE WAIT TIME

■ TIME

○ GEN BREAKER

■ CONTINUOUS

■ CLOSING TIME

9400200990 Rev X DGC-2020 Human-Machine Interface 2-21

■ DEAD BUS CL ENBL

■ DEAD GEN CL ENBL

■ OPEN CMD

■ CLOSE CMD

○ MAINS BREAKER

■ CONFIGURED

■ CONTINUOUS (Visible when configured.)

■ CLOSING TIME ( Visible w hen configured.)

■ OPEN CMD (Visible when configured.)

■ CLOSE CMD (Visible when configured.)

○ BRK CLOSE FAIL PALM
○ BRK OPEN FAIL PALM

● BUS CONDITION DETECT

○ GEN DEAD

■ THRESHOLD

■ TIME DELAY

○ GEN STABLE

■ OV PICKUP

■ OV DROPOUT

■ UV PICKUP

■ UV DROPOUT

■ OF PICKUP

■ OF DROPOUT

■ UF PICKUP

■ UF DROPOUT

■ TIME DELAY

■ LOW LINE SF (Visible when an input is selected for the Low Line Override programmable

function.)

■ ALT FREQ SF

○ GEN FAILED

■ TIME DELAY

○ BUS DEAD

■ THRESHOLD

■ TIME DELAY

○ BUS STABLE

■ OV PICKUP

■ OV DROPOUT

■ UV PICKUP

■ UV DROPOUT

■ OF PICKUP

■ OF DROPOUT

■ UF PICKUP

■ UF DROPOUT

■ TIME DELAY

■ LOW LINE SF (Visible when an input is selected for the Low Line Override programmable

function.)

■ ALT FREQ SF

○ BUS FAILED

■ TIME DELAY

● SYNCHRONIZER (Optional)

○ TYPE
○ SLIP FREQ
○ MIN SLIP CTL LMT
○ MAX SLIP CTL LMT
○ VOLT WINDOW
○ CLOSING ANGLE
○ VG>VB
○ TIME DELAY
○ FAIL DELAY
○ VOLT GAIN
○ SPEED GAIN
○ SYNC FAIL PALM

2-22 DGC-2020 Human-Machine Interface 9400200990 Rev X

● AVR BIAS CONTROL

○ OUTPUT (Visible when LSM-2020 is enabled.)

■ TYPE

○ CONTACT (Visible when LSM-2020 is disabled or when LSM-2020 is enabled and OUTPUT TYPE =

CONTACT.)

■ TYPE

■ CORRECTION PULSE (Visible when OUTPUT TYPE = CONTACT and CONTACT TYPE =

PROPORTIONAL.)

○ VOLT CONTROL (Visible when LSM-2020 is enabled.)

■ VOLT CTRL GAINS

■ VOLTAGE TRIM

○ VAR CTRL

■ DROOP

■ DROOP GAIN

■ var CTRL ENABLE (Visible when LSM-2020 is enabled.)

■ var CTRL MODE (Visible when LSM-2020 is enabled.)

■ KP (Visible when LSM-2020 is enabled.)

■ RAMP RATE (Visible when LSM-2020 is enabled.)

■ kvar SETPT (Visible when LSM-2020 is enabled.)

■ kvar SRC (Visible when LSM-2020 is enabled .)

■ kvar ALG MAX (Visible when LSM-2020 is enab led.)

■ kvar ALG MIN (Visible when LSM-2020 is enabled.)

■ PF SETPT (Visible when LSM-2020 is enabled.)

■ PF SRC (Visible when LSM-2020 is enabled.)

■ PF ALG MAX (Visible when LSM-2020 is enabled.)

■ PF ALG MIN (Visible when LSM-2020 is enabled.)

■ KI (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

■ KD (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

■ TD (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

■ LOOP GAIN (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

● GOV BIAS CONTROL

○ OUTPUT (Visible when LSM-2020 is enabled.)

■ TYPE

○ CONTACT (Visible when LSM-2020 is disabled or when LSM-2020 is enabled and OUTPUT TYPE =

CONTACT.)

■ TYPE

○ SPEED CONTROL

■ SPEED CTRL GAINS

■ SPEED TRIM

○ kW CTRL

■ LOAD CTRL ENABLE (Visible when LSM-2020 is enabled.)

■ LOAD SHARE (Visible when LSM-2020 is enabled.)

■ KP (Visible when LSM-2020 is enabled.)

BIAS CONTROL

□ WIDTH
□ INTERVAL

□ KP
□ KI (Visible when OUTPUT TYPE = ANALOG.)
□ KD (Visible when OUTPUT TYPE = ANALOG.)
□ TD (Visible when OUTPUT TYPE = ANALOG.)
□ LOOP GAIN (Visible when OUTPUT TYPE = ANALOG.)

□ ENABLE
□ DEADBAND
□ VOLT TRIM SETPT RATED VOLTS (Rev 3 hardware only.)
□ RMT VLT BIAS (Rev 3 hardware only.)
□ VOLT TRM BIAS (Rev 3 hardware only.)

□ KP
□ KI (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)
□ KD (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)
□ TD (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)
□ LOOP GAIN (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

□ ENABLE
□ SETPOINT
□ DEADBAND
□ RMT SPD BIAS
□ SPEED BIAS

9400200990 Rev X DGC-2020 Human-Machine Interface 2-23

■ KI (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

■ KD (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

■ TD (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

■ LOOP GAIN (Visible when LSM-2020 is enabled and OUTPUT TYPE = ANALOG.)

■ DROOP

■ DROOP GAIN

■ RAMP RATE (Visible when LSM-2020 is enabled.)

■ BASELOAD LVL (Visible when LSM-2020 is enabled.)

■ BL LV SRC (Visible when LSM-2020 is enabled.)

■ PF SRC (Visible when LSM-2020 is enabled.)

■ BL ALG MAX (Visible when LSM-2020 is enabled.)

■ BL ALG MIN (Visible when LSM-2020 is enabled.)

■ BRKR OPEN PT (Visible when LSM-2020 is enabled.)

● CONTROL DEBUG (Visible when LSM-2020 is enabled.)

○ kW RAMP
○ kW RAMP DMD
○ WATT DEMAND
○ SPEED PID
○ kW PID
○ SPEED ERR
○ kW ERR
○ SPEED BIAS
○ PF SETPT
○ kvar RAMP
○ var RAMP DMD
○ var DEMAND
○ VOLT PID
○ kvar PID
○ VOLT ERR
○ kvar ERR
○ VOLT BIAS

MULTIGEN MANAGEMENT (Visible when LSM-2020 is enabled.)

● AVR ANALOG OUTPUT

○ OUTPUT TYPE
○ MIN OUTPUT
○ MAX OUTPUT
○ VOLT RESPONSE

● GOV ANALOG OUTPUT

○ OUTPUT TYPE
○ MIN OUTPUT
○ MAX OUTPUT
○ SPD RESPONSE

● LOAD SHARE LINE

○ MIN VOLTAGE
○ MAX VOLTAGE

● DEMAND START STOP

○ ENABLE
○ START TD 1
○ START TD 2
○ STOP TD
○ START LVL 1
○ START LVL 2
○ STOP LVL

● SEQUENCING

○ SEQUENCE ID
○ MODE
○ MAX GEN START
○ MAX GEN STOP
○ LAST UNIT SHUTDN

● NETWORK CONFIG

○ EXP SEQ ID X (X = 1 TO 16)

2-24 DGC-2020 Human-Machine Interface 9400200990 Rev X

LOGIC TIMERS

0 VLL 0 VLN

0.0

Hz 0 A

0 kW 0 KVar
PF 1.00 LEAD
BUS 0 VLL 0.0 Hz

G

L

GN BRK OPN CMD OFF
GN BRK CLS CMD OFF
MN BRK OPN CMD OFF
MN BRK CLS CMD OFF

P0071-89

MAINSFAIL XFER STATE

DISABLED

● TIMER X (X = 1 to 10)

○ HOURS
○ MINUTES
○ SECONDS

ENTER PASSWORD

LOGOUT (Visible when logged in through the front panel.)

Breaker Hardware One-Line Diagram

A one-line diagram of the breaker hardware configuration can be displayed on the front panel. This
diagram changes in real time to reflect the current state of the configured breakers. The breaker hardw ar e
one-line diagram is disabled by default. To display the breaker hardware one-line diagram using front
panel controls, navigate to Settings > General Settings > Front Panel HMI > One-Line Diagram and
enable the setting. If usin g BEST COM SPlus, navigate t o Settings Explorer, G ener al Settings , Front Pa nel
HMI and select Enable on the One-Line Diagram setting.

Once enabled, the o ne-line diagram a ppears on bot h the front panel Summary and Main Menu screens .
The One-Line Diagram Menu screen provides metering for mains fail transfer, generator and bus
parameters as well as bre aker controls. To reach the One-Line Diagra m Menu screen, go to the Main
Menu and select the one-line diagram as you would a normal menu option and press the right arrow
pushbutton. The one-line diagram, m ains fail transfer state (if enabled), generator and bus parameters,
and breaker controls are displayed respectively from the top of the menu.

Further mains fail transfer state metering is av ailable by selecting the “MAINSF AIL XFER STATE” and
pressing the right ar row pushbutton. Mains fail trans fer state, transfer delay, return de lay, max transfer
time, max parallel time, and open transition delay are displayed.

To issue a breaker open or breaker close command, select the appropr iate menu opt ion, press Edit and
select ON.

The ONE-LINE DIAGRAM screen options are shown in Figure 2-4. Figure 2-5, below, illustrates and
describes the different configurations of the one-line diagram.

Figure 2-4. One-Line Diagram Menu Options (Available when One-Line Diagram is Enabled)

9400200990 Rev X DGC-2020 Human-Machine Interface 2-25

Generator and mains breakers are configured and

Generator and mains breakers are configured. The

Generator and mains breakers are configured. The

Generator breaker is configured and open.

G

L

G

L

G

L

G L

G

L

P0071-88

both breakers are open.

generator breaker is closed and the mains breaker
is open.

generator breaker is open and the mains breaker is
closed.

No breakers are configured.

Figure 2-5. Breaker Hardware One-Line Diagram

Generator Network Status Display

The status of the gen er ator network is availabl e on th e front panel of eac h DGC -2020 when the gener at or
is part of a multi-machine network. T he System Type setting (fou nd under S ettings > System Parame ters
> Syste m Settings) c onfigures the m achine to be par t of a multi-machine network . When System Ty pe is
set to Multiple Generator, the machine is configured for participation in a multiple machine system.

Generator network status is found on the front panel under Metering > Alarms-Status > Network Status.

• System Manager - the sequencing ID of the m achine that controls all dead bus ar bitration and

generator sequencing. This ID is always assigned to the machine on the network that has the
lowest nonzero value of sequencing ID.

• Number of Units - the number of units on the generator network. The sequencing IDs of all

machines on the network are listed as ID1:, ID2:, etc.

All machines on the net work display the same value f or System M anager and Nu mber of Units . Each un it
to be used as part of generator sequenc ing or dead bus breaker arbitration must have a uniqu e nonzero
sequencing ID. The ID M issing and ID Repeat pre-alarms annunciate whe n a machine is not conf igured
for proper system operation.

The System Manager and Number of Units parameters display zero when the DGC-2020 is not
communicating with an LSM-2020. The Sys tem Man ager paramet er d isplay s −1 when a system ma nager
is not present on the network (all unit IDs are zero).

Mains Fail Transfer Status Display

Mains Fail Transfer Status can be viewed in three locations, however, Mains Fail Transfer must first be
enabled.

To enable Mains Fai l Trans fer, nav igat e to Se ttings > Breaker Mana gement > Breaker Hardw are > Mains
Fail Transfer using t he front panel c ontrols or Settings Explorer, Breaker Management, M ains Fail using
BESTCOMSPlus.

Mains Fail Transfer Status is displayed on the front panel in Metering > Alarms-Status > Mains Fail
Transfer and also on the Br eaker H ardw are On e-Line D iagram screen. It is dis pla yed in B ESTCO MS Plus
on the Metering Explorer, Mains Fail Transfer Status screen.

These screens display t he Mains Fail Transfer State and any timers relevant to the mains fail tr ansfer
process. These parameters are listed below.

Mains Fail Transfer State: The different mains fail transfer states are described below.
Power From Mains: Power is being supplied to the load from the mains bus.
Transfer Timer Active: Transfer Delay timer is actively counting.
Transferring to Gens: Load is being transferred to the generator bus.
Power From Gens: Power is being supplied to the load from the generator bus.
Return Timer Active: Return Delay timer is actively counting.

2-26 DGC-2020 Human-Machine Interface 9400200990 Rev X

Transferring to Mains: Load is being transferred to the mains bus.

Note

Disabled: DGC-2020 is in the OFF or RUN operating mode or in the alarm state.

Transfer Delay: Displays the current timer value in seconds.
Return Delay: Displays the current timer value in seconds.
Max Transfer Time: Displays the current timer value in seconds.
Max Parallel Time: Displays the current timer value in seconds.
Open Transition Delay: Displays the current timer value in seconds.

The Mains Fail Transfer screen found at Metering > Alarms-Status >
Mains Fail Transfer o nly shows timers that are actively count ing and
are relevant to mains fail transfer. They are not otherwise visible.

Rear Panel

All DGC-2020 terminals and connectors are located on the rear panel. Rear panel terminals and
connectors, for hardwar e vers ion 3, are illustrated in Figure 2-6. Table 2-2 lists th e call-o uts of Figure 2-6
along with a description of each connector type. Rear panel terminals and connectors, for hardware
versions 1 and 2, are illustrated in Figure 2-7. Table 2-3 lists the call-outs of Figure 2-7 along with a
description of each con nector ty pe. The DGC-2 020 rea r panel is s hown in Figure 2-6 and Figure 2-7 with
the rear cover removed.

9400200990 Rev X DGC-2020 Human-Machine Interface 2-27

DGC-2020

CHASSIS

BATT –

BATT +
RDPBATT +
RDPBATT –

RDPTXD –
RDPTXD +

OIL

FUEL

COOLANT

SENDER COM

485 SHIELD

485 B
485 A

INPUT 16

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15

INPUT 15
INPUT

14

INPUT

13
INPUT 12
INPUT 11
INPUT 10

INPUT

9
INPUT 8
INPUT 7
INPUT

6
INPUT 5
INPUT

4
INPUT 3
INPUT 2
INPUT 1

16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

MPU +

MPU –
Not Used
Not Used

GEN VN

Not Used

GEN VC

Not Used

GEN VB

Not Used

GEN VA

Not Used

BUS VB

Not Used

BUS VA

31
32
33
34
35
36
37
38
39
40
41
42
43
44
45

OUT 8
OUT 9

COM 10, 11, 12

OUT 10
OUT 11
OUT 12

Not Used

IA –
IA +

Not Used

IB –
IB +

Not Used

IC –
IC +

61
62
63
64
65
66
67
68
69
70
71
72
73
74
75

E STOP
E STOP

CAN L

CAN H

SHIELD

COM 1, 2, 3

OUT 1
OUT 2
OUT 3

COM 4, 5, 6

OUT 4
OUT 5
OUT 6

COM 7, 8, 9

OUT 7

46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

P0067-67

B

B

A

STARTRUN

PRE

C

D

E

BUS VA

Not Used

BUS VB

Not Used

BUS VC

76

77

78

7980

B

2-28 DGC-2020 Human-Machine Interface 9400200990 Rev X

Figure 2-6. Rear Panel f or D GC -2020 Hardware Version 3

Locator

Description

A

Connections to the DGC-2020 Start (starter), Run (fuel solenoid), and Pre (glow plug)
terminals.

B

The majority of external, DGC-2020 wiring is terminated at 15-position connectors with

compatibility with hardware versions 1 and 2 of the DGC-2020.

C

The DGC-2020 provides a battery backup for the real-time clock. See Section 8,
replace the battery with Basler Electric P/N 38526 may void the warranty.

D

The mini-B USB socket mates with a standard USB cable and is used with a PC running
BESTCOMSPlus® software for local communication with the DGC-2020.

E

DGC-2020 controllers equipped with the optional external modem port, connect to the
user-supplied modem using a standard R S-232 cable.

Table 2-2. Descriptions for Figure 2-6. Rear Panel for DGC-2020 Hardware Version 3

output contacts are made directly to each relay through quarter-inch, male, quick-connect

compression terminals. These connectors plug into headers on the DGC-2020. The
connectors and headers have a dovetailed edge that ensures proper connector
orientation. Each connector and header is uniquely keyed to ensure that a connector
mates only with the correct header. Connector screw terminals accept a maximum wire
size of 12 AWG.
Bus sensing terminal 76 (BUS VA) is internally tied to terminal 45 (BUS VA) and terminal
78 (BUS VB) is internally tied to terminal 43 (BUS VB). This maintains backward

Maintenance and Troubleshooting, for instructions on replacing the battery. Failure to

9400200990 Rev X DGC-2020 Human-Machine Interface 2-29

Figure 2-7. Rear Panel for DGC-2020 Hardware Versions 1 and 2

2-30 DGC-2020 Human-Machine Interface 9400200990 Rev X

Table 2-3. Descriptions for Figure 2-7. Rear Panel for DGC-2020 Hardw are Versions 1 and 2

Locator Description

A, D The majority of external, DGC-2020 wiring is terminated at 15-position connectors with

compression terminals. These connectors plug into headers on the DGC-2020. The
connectors and headers have a dovetailed edge that ensures proper connector
orientation. Each connector and header is uniquely keyed to ensure that a connector
mates only with the correct header. Connector screw terminals accept a maximum wire
size of 12 AWG (3.31 mm

2

).

B The mini-B USB socket mates with a standard USB cable and is used with a PC running

BESTCOMSPlus® software for local communication with the DGC-2020.

C DGC-2020 controllers equipped with an optional, internal, dial-out modem port, connect

to a telephone line through a USOC RJ-11 jack.

E Connections to the DGC-2020 Start (starter), Run (fuel solenoid), and Pre (glow plug)

output contacts are made directly to each relay through quarter-inch, male, quick-connect
terminals.

F The DGC-2020 provides a battery backup for the real-time clock. See Section 8,

Maintenance and Troubleshooting, for instructions on replacing the battery. Failure to
replace the battery with Basler Electric P/N 38526 may void the warranty.

9400200990 Rev X DGC-2020 Human-Machine Interface 2-31

2-32 DGC-2020 Human-Machine Interface 9400200990 Rev X

SECTION 3 • FUNCTIONAL DESCRIPTION

TABLE OF CONTENTS

SECTION 3 • FUNCTIONAL DESCRIPTION ........................................................................................... 3-1

Introduction ............................................................................................................................................ 3-1

DGC-2020 Function Blocks ................................................................................................................... 3-1

Power Supply ..................................................................................................................................... 3-1

Battery Voltage Sensing ................................................................................................................. 3-1

Microprocessor ................................................................................................................................... 3-1

Zero Crossing Detection ................................................................................................................. 3-2

Analog-to-Digital Converter ............................................................................................................ 3-2

Watchdog Timer ............................................................................................................................. 3-2

Generator Voltage Sensing Inputs ..................................................................................................... 3-2

Bus Voltage Sensing Inputs ............................................................................................................... 3-2

Current Sensing Inputs ....................................................................................................................... 3-2

Analog Engine Sender Inputs............................................................................................................. 3-2

Oil Pressure .................................................................................................................................... 3-2

Coolant Temperature ...................................................................................................................... 3-2

Fuel Level ....................................................................................................................................... 3-3

Speed Signal Inputs ........................................................................................................................... 3-3

Generator Voltage Sensing Input ................................................................................................... 3-3

Magnetic Pickup Input (MPU) ......................................................................................................... 3-3

Contact Inputs .................................................................................................................................... 3-3

Emergency Stop Input .................................................................................................................... 3-3

Programmable Inputs ..................................................................................................................... 3-3

Front Panel HMI ................................................................................................................................. 3-4

LCD ................................................................................................................................................. 3-4

LED Indicators ................................................................................................................................ 3-4

Pushbuttons .................................................................................................................................... 3-4

Remote Display Panel (Optional) ....................................................................................................... 3-4

Communication Ports ......................................................................................................................... 3-5

USB ................................................................................................................................................. 3-5

CAN ................................................................................................................................................ 3-5

Diagnostic Trouble Codes (DTCs) .................................................................................................. 3-8

MTU Fault Codes .......................................................................................................................... 3-20

RS-485 (Optional) ......................................................................................................................... 3-20

Modem (Optional) ......................................................................................................................... 3-20

Output Contacts ............................................................................................................................... 3-20

PRESTART ................................................................................................................................... 3-20

START .......................................................................................................................................... 3-20

RUN .............................................................................................................................................. 3-21

Programmable .............................................................................................................................. 3-21

Modes of Operation ............................................................................................................................. 3-21

OFF .................................................................................................................................................. 3-21

RUN .................................................................................................................................................. 3-21

AUTO ................................................................................................................................................ 3-21

ATS Contact Input ........................................................................................................................ 3-21

Generator Exerciser ...................................................................................................................... 3-21

Mains Fail Transfer Functionality .................................................................................................. 3-21

Run with Load Logic Element ....................................................................................................... 3-21

Engine Run Logic Element ........................................................................................................... 3-21

Demand Start/Stop Function ........................................................................................................ 3-22

Interoperability of the Run with Load Logic El eme nt and the Demand Start/Stop Function ........ 3-22

Breaker Management .......................................................................................................................... 3-22

Introduction ....................................................................................................................................... 3-22

Determining Breaker Statu s ............................................................................................................. 3-22

Processing Breaker Requests .......................................................................................................... 3-22

RUN Mode .................................................................................................................................... 3-22

9400200990 Rev X DGC-2020 Functional Description i

OFF or AUTO Mode (Not Running) .............................................................................................. 3-22

AUTO Mode (Running) ................................................................................................................. 3-22

Breaker Operation ............................................................................................................................ 3-23

Determining if it is Acceptable to Close a Breaker ....................................................................... 3-23

Changing the Breaker State ......................................................................................................... 3-23

Synchronizer Operation .................................................................................................................... 3-23

Dead Bus Breaker Close Arbitrat ion .................................................................................................... 3-25

Event Recording ................................................................................................................................... 3-25

Figures

Figure 3-1. Function Block Diagram .......................................................................................................... 3-1

Tables

Table 3-1. ECU Parameters Obtained from CAN bus Interface ................................................................ 3-5

Table 3-2. Engine Configuration Parameters Obtained from CAN bus Interface ..................................... 3-7

Table 3-3. J1939 Data Transmitted from the DGC-2020 .......................................................................... 3-7

Table 3-4. Diagnostic Information Obtained Over the CAN bus Interface ................................................ 3-8

Table 3-5. DTCs Displayed by the DGC-2020 (FMI Strings) .................................................................... 3-9

Table 3-6. DTCs Displayed by the DGC-2020 .......................................................................................... 3-9

Table 3-7. Event List ................................................................................................................................ 3-26

ii DGC-2020 Functional Description 9400200990 Rev X

SECTION 3 • FUNCTIONAL DESCRIPTION

Microprocessor

Power Supply

Battery Voltage Sensing

Sender Input Sensing

(To Internal Circuitry)

Generator Current Sensing

Bus Voltage Sensing

Generator Voltage Sensing

MPU Speed Sensing

Programmable Dry Contact Inputs (16)

USB Com Port

J1939 CAN Com Port

RS-485 Com Port (Optional)

External Modem Com Port (Optional)

Emergency Stop Contact Input

Front Panel HMI

and LCD

Remote Display

Panel Driver

(RDP-110)

Programmable

Output Contacts

(4 or 12)

Fuel Solenoid

Output Contacts

Engine Crank

Output Contacts

Pre-start Output

Contacts

P0067-68

Sensing

Com Ports

Sensing

HMI

Output
Contacts

Introduction

This section describes how the DGC-2020 functions. A detailed description of each function block is
provided in the paragraphs under the heading of DGC-2020 Function Blocks.

DGC-2020 operating and metering features are described in Section 4, BESTCOMSPlus® Software.

DGC-2020 Function Blocks

To ease understanding, DGC-2020 functions are illustrated in the block diagram of Figure 3-1. The
following paragraphs describe each function in detail.

Figure 3-1. Function Block Diagram

Power Supply

The internal, switc h-mode power supp ly uses t he appl ied batter y voltag e to gener ate opera ting power for
the internal circuitry of the DGC-2020. The power su pply accepts a nominal batt ery voltage of 12 or 24
Vdc and has an operat ing range of 6 to 32 Vdc. Batt ery voltage is applied to te rminals 2 (–) and 3 (+).
Operating power must be of the correct polarity. Although reverse polarity will not cause damage, the
DGC-2020 will not operate.

Battery Voltage Sensing

Voltage applied to the power supply is filtered and reduced to a suitable level for sensing by the
microprocessor.

Microprocessor

The microprocessor controls the overall functionality of the DGC-2020 and makes decisions based on
programming and system inputs.

9400200990 Rev X DGC-2020 Functional Description 3-1

Circuits relating to the microprocessor inputs are described in the following paragraphs.

Zero Crossing Detection

The zero crossing of A-pha s e to B-phase or A-phase to C-phas e (us er -selectable) line voltag e is det ec ted
and used to calculate t he generator frequency. The zero crossing of A-phase to B-phase bus voltage is
used to calculate the bus frequency.

Analog-to-Digital Converter

Scaled and condition ed signals representing the sensing v oltage, sensing current, coolant t emperature,
fuel level, oil pressure, and battery voltage are digitized by the microprocessor’s analog-to-digital
converter. The digitized information is stored in random access memory (RAM) and used by the
microprocessor for all metering and protection functions.

Watchdog Timer

The watchdog timer monitors the firmware executed by the microprocessor. If the firmware ceases normal
operation, the watchdog t imer will reset the microprocessor. After reset, the microprocessor will resu me
normal operation if t he condition tha t caused the watc hdog reset is no longer present. If th e condition is
still present, the unit will reset repeatedly until it can resume normal operation.

Generator Voltage Sensing Inputs

Voltages applied to the generator voltage sensing inputs are scaled to levels suitable for use by the
internal circuitry. Generator voltage sensing configuration is menu-selectable.

The generator voltage sensing inputs accept a maximum voltage of 576 Vrms, line-to-line. Sensing
voltage is applied to terminals 41 (A-phase), 39 (B-phase), 37 (C-p has e) , and 35 ( neutra l) .

Bus Voltage Sensing Inputs

Voltage applied to the bus voltage sensing input is scaled to a level suitable for use by the internal
circuitry.

The bus voltage sensin g input acc epts a maximum v ol tage of 57 6 Vrms. F or har dwar e vers ion 3, s ensing
voltage is applied to term inals 76 (A-phase), 78 (B-phase), and 80 (C-phase). For hardw are versions 1
and 2, sensing voltage is applied to terminals 45 (A-phase) and 43 (B-phase).

In version 3 hardware, terminal 45 is internally tied to 76 and terminal 43 is internally tied to 78. This
accommodates the use of connectors wired for legacy DGC-2020 versions.

Current Sensing Inputs

Generator currents are sensed and scaled to values suitable for use by the internal circuitry.
DGC-2020 controllers with 1 ampere current sensing (style number 1xxxxxxxx) accept a maximum

current value of 1 Aac. DGC-2020 co ntrollers with 5 ampere current sens ing (style number 5xxxxxxxx)
accept a maximum current v alue of 5 Aac. Sensing cur rent is applied to termina ls 68 (IA–) and 69 (IA+),
71 (IB–) and 72 (IB+), and 74 (IC–) and 75 (IC+).

Analog Engine Sender Inputs

Programmable analog engine sender inputs g ive the DGC-2020 user the flexibil ity to select the engine
sender to be used in an application. Information about programming the sender inputs is provided in
Section 4, BESTCOMSPlus® Software.

Oil Pressure

A current is provided to the oil pressure sender. The develope d voltage is measur ed and scaled for use
by the inter nal c irc uit ry. An open cir cuit or sh ort circ uit acros s the o il press ure sender terminals w il l ca use
the DGC-2020 to indic ate a failed sender. Oil pressur e senders that are co mpatible with the DGC -2020
include Datcon model 02505-00, Isspro model R8919, and Stewart-Warner models 411K and 411M.
Other senders may also be used. BESTCOMSPlus® software allows for the programming of sender
characteristics. See Section 4, BESTCOMSPlus® Software, for more information.

Oil pressure sender co nnections are made at terminals 8 and 11 (sender common).

Coolant Temperature

A current is provided to the coolant temperatur e sender. The develop ed voltage is measured and scaled
for use by the intern al circuitry. An open circuit or short circuit across the coolant temperature sender

3-2 DGC-2020 Functional Description 9400200990 Rev X

terminals will cause the DGC-2020 to indicate a failed sender. Coolant temperature senders that are
compatible with the DGC-2020 include Datcon model 02019-00, Faria model TS4042, Isspro model
R8959, and Stewart-War ne r mode l 33 4P. Ot her s end e rs may be us ed. BESTCOMSPlus® software allows
for the programming of sender characteristics. See Section 4, BESTCOMSPlus® Software, for more
information.

Coolant temperature sender connections are made at terminals 10 and 11 (sender common).

Fuel Level

A current is provide d to the fuel lev el sender. The developed volt age is measured an d scaled for use by
the internal circuitry. An open circuit or short circuit ac ross the fuel level sender termin als will cause the
DGC-2020 to indicate a failed sender. Fuel level sender s that are compat ible with the DGC -2020 include
Isspro model R8925. Other senders may be used. BESTCOMSPlus® software allows for the
programming of sender characteristics. See Section 4, BESTCOMSPlus® Software, for more information.

Fuel level sender connections are made at terminals 9 and 11 (sender common).

Speed Signal Inputs

The DGC-2020 uses signals from the generator voltage sensing inputs and magnetic pickup input to
detect machine speed.

Generator Voltage Sensing Input

The generator voltage sensed by the DGC-2020 is used to measure frequency and can be used to
measure machine speed.

Sensing voltage is applied to terminals 41 (A-phase), 39 (B-phase), 37 (C-phase), and 35 (Neutral).

Magnetic Pickup Input (MPU)

Voltage supplied by a magnetic pickup is scaled and conditioned for use by the internal circuitry as a
speed signal source. The MPU input accepts a sign al over the range of 3 to 35 volts peak and 32 to
10,000 hertz.

Magnetic pickup connections are provided at terminals 31 (+) and 32 (–).

Contact Inputs

The DGC-2020 has sevent een contact sensing inputs: an emergency stop input and 16 program mable
inputs. Addit ional contact inputs can be ac commodated with a CEM-2020 (Co ntact Expansion Module).
Contact Basler Electric for availability and ordering information.

Emergency Stop Input

This input accepts Form B, dr y contacts. An open circuit at th is continuously monitore d input initiates an
emergency stop. An emer gency stop removes operat ing power from the DGC-2020 Pre-Start, Run , and
Fuel output relays.

Emergency stop contact connections are made at terminals 46 and 47.

Programmable Inputs

Each programmable input (Input 1 through Input 16) can be independently configured to perform the
following functions. By default, each programmable input is disabled.

• Auto Transfer Switch

• Battery Charger Fail

• Battle Override

• Fuel Leak Detect

• Grounded Delta Override

• Low Coolant Level

• Low Line Override

• Single-Phase A-C Override

• Single-Phase Override

The programmable inputs accept dry contacts. A contact is connected between a programmable input
and the negative sid e of the battery. Through BESTCOMSPlus®, each programmable contact input can
be assigned a name ( 16 alphanumeric charact ers, maximum) and configured a s an alarm input, a pre­alarm input, or neither. The default names for the inputs are INPUT_x (where x = 1 to 16). When a

9400200990 Rev X DGC-2020 Functional Description 3-3

programmable contact inp ut is closed, the fr ont pa nel displ ay shows the name of the clos ed inp ut if it was
programmed as an alarm or pre-alarm i nput. Alarm inputs are annunciated t hrough the Normal display
mode screens of the front panel. Pre-alarm inputs are annunciat ed through the pre-alarm metering screen
of the front panel. If ne ither is programmed, no indication is giv en. Programming an input as neither is
useful when a programmable input is used as an inp ut to progr amm ab le log ic.

Connections for the progra mmable inputs are provided at terminals 15 (Input 1 6) through 30 (Input 1).
The negative side of the battery voltage (terminal 2) serves as the return connection for the
programmable inputs.

Front Panel HMI

The front panel HMI provid es a c onvenie nt i nter fac e f o r viewing s ys tem p ar ame ters and for controlling the
DGC-2020/generator s et. Front p anel HMI c ompone nts inclu de an LCD (liqu id cry stal display), LED (l ight
emitting diodes) indicators, and pushbuttons.

LCD

The backlit LCD provides met ering, pre-alarm, and alarm infor mat ion. Detailed informat ion a bout the LCD
is provided in the Soft w are O perat ion sub-section.

LED Indicators

The LEDs indicate pre-alarm and alarm conditions along with DGC-2020 status and generator status.

Pushbuttons

The pushbuttons are used to scroll through and select parameters displayed on the LCD, change
setpoints, start and stop the generator, and reset alarms.

Remote Display Panel (Optional)

Applications that req uire re mote annunc iation ca n use Bas ler Electr ic’s Rem ote Displ ay Panel, RD P-110.
Using the RDP-110 with the D GC-2020 meets the requirements of NFP A Standard 110. The RDP-110
uses a dedicated, four-terminal interface with the DGC-2020. It communicates with the DGC-2020 via
terminals 6 (RDP T XD–) and 7 (RDP TXD+) and receives power from t erminals 4 (RDP BATT+) and 5
(RDP BATT-). Remote indication of many pre-alarm and alarm conditions is provided by the RDP-110.

The following pre-alarm conditions are indicated by LEDs on the RDP-110 front panel:

• Battery charger failure ∗†

• Battery overvoltage †

• High coolant temperature

• Low coolant temperature

• Low fuel level

• Low oil pressure

• Weak battery or low battery voltage

The following alarm conditions are indicated by LEDs and an audible alarm on the RDP-110 front panel:

• Low coolant level ∗

• High coolant temperature

• Low oil pressure

• Overcrank

• Overspeed

• Emergency stop

• Fuel leak/fuel sender failure ∗†

• Engine sender unit failure †

∗ Can be configured in the DGC-2020 as N one, Alarm, or Pre-Alarm. See Section 4, BESTCOMSPlus®

Software, Programm able Inputs, Pr ogramma ble Funct ions, for more information . The light on the RDP­110 turns on when the input that is assigned to the programmable function is closed, whether the
function is configured as None, Alarm, or Pre-Alarm.

† For DGC-2020 units loaded with firmware version X.14.00 and higher this LED is fully programmable via

BESTlogic™Plus.

Additionally, the RDP-110 indicates when the DGC-2020 is not operating in Auto mode and when the
generator is supply ing load. When the DGC -2020 is in an alarm state n ot listed abov e, the Switch N ot In

3-4 DGC-2020 Functional Description 9400200990 Rev X

Auto LED lights and the ho rn sounds. For more informati on about the RDP-110, request product bulle tin

Units

Units

SPN

Dependent

Aftertreatment 1 Diesel Particulate Filter Outlet
Temperature

C °F

500 ms

3246
Air Filter Differential Pressure

kPa

psi

500 ms

107

Air Inlet Temperature

kPa

F

1 s

172

Alarm Reset Feedback

Binary (0 or 1)

1 s

2815

Ambient Air Temperature

°C

°F

1 s

171

Auxiliary Pressure 1

kPa

psi

On Request

1387

Auxiliary Pressure 2

kPa

psi

On Request

1388

Barometric Pressure

kPa

psi

1 s

108

Battery Voltage

Vdc

Vdc

1 s

168

Boost Pressure

kPa

psi

500 ms

102

Charge Air Temperature

°C

°F

1 s

2629

Coolant Level

% % 500 ms

111

Coolant Pressure

kPa

psi

500 ms

109

DEF Inducement Level - Level of Inducement Not to
Run the Engine

% % 1 s

5246
DEF Severity Level - Severity of Tank Low Level

% % 1 s

5245

DEF Tank 1 Level

% % 1 s

1761

SNE.
RDP-110 communication connections are made at DGC-2020 terminals 6 (RDP TXD–) and 7

(RDP TXD+). RDP-110 operatin g power is s upplied a t DGC-2020 ter minals 4 (RDP BAT T+) and 5 (RDP
BATT–).

Communication Ports

DGC-2020 communication por ts include a USB jack, CAN terminals , optional RS-485 terminals, and an
optional modem jack.

USB

The rear-panel, mini-B USB socket enables local communication with a PC running BESTCOMSPlus®
software. The DGC-2020 is connected to a PC using a standard USB cable. BESTCOMSPlus® is a
Windows® based communication software package that is supplied with the DGC-2020. A detailed
description of BESTCOMSPlus® is provided in Section 4, BESTCOMSPlus® Software.

CAN

A Controller Area Network (CAN) is a standard int erface that enables c ommunication between multiple
controllers on a com mon n etwork us ing a stand ard mes sage prot ocol. DGC -202 0 contr ollers h ave a CAN
bus interface that supports the SAE J1939 protocol and the MTU protocol.

Applications using an engine-driven generator set c ontrolled by a DGC-2020 may also have an Engine
Control Unit (ECU). The CAN bus interf ace allows the ECU and DG C-2020 to communicate. The ECU
reports operating i nformation to the D GC -202 0 through the CAN bus interface. Op erating par ameter s and
diagnostic information, if supported by the ECU, are decoded and displayed for monitoring.

The primary use of the CAN bus interface is to o btain eng ine opera ting parame ters for monitor ing speed,
coolant temperature , oil pressur e, coolant level, a nd engine hour s without the n eed for direct c onnection
to individual senders. Table 3-1 lists the ECU parameters and Table 3-2 lists the engine configuration
parameters supported by the DGC-2020 CAN bus interface. Th ese parameters are transmitted via the
CAN bus inter face at prese t intervals. See th e column labele d Update Rate in Table 3-1 for transm ission
rates. This information can also be transmitted upon user request.

CAN bus interface connections are made at 48 (CAN L), 49 (CAN H), and 50 (SHIELD).

Table 3-1. ECU Parameters Obtained from CAN bus Interface

ECU Parameter

Actual Engine Percent Torque % % Engine Speed

Metric

°

English

°

Update Rate

∗

513

9400200990 Rev X DGC-2020 Functional Description 3-5

ECU Parameter

Units

Units

SPN

DEF Tank 2 Level

% % 1 s

4367

ECU Temperature

°C

°F

1 s

1136

Engine Coolant Preheated State

Binary (0 or 1)

500 ms

3552

Engine Coolant Temperature

°C

°F

1 s

110

Engine Desired Operating Speed

rpm

rpm

250 ms

515

Engine Intake Manifold #1 Absolute Pressure

kPa

psi

500 ms

3563

Engine Intercooler Coolant Level

% % 500 ms

3668

Engine Intercooler Temperature

°C

°F

1 s

52

Engine Oil Level

% % 500 ms

98

Engine Oil Pressure

kPa

psi

500 ms

100

Engine Oil Temperature

°C

°F

1 s

175

Engine Speed

rpm

rpm

Engine Speed

Dependent

190

Exhaust Gas Temperature

°C

°F

500 ms

173

Exhaust Temperature A

°C

°F

500 ms

2433

Exhaust Temperature B

°C

°F

500 ms

2434

Fuel Delivery Pressure

kPa

psi

500 ms

94

Fuel Leak Filter 1

Binary (0 or 1)

1 s

1239

Fuel Leak Filter 2

Binary (0 or 1)

1 s

1240

Fuel Rate

liter/hr

gal/hr

100 ms

183

Fuel Temperature

°C

°F

1 s

174

High Exhaust System Temp (HEST) Lamp/Indicator

—

—

500 ms

3698

Injection Control Pressure

MPa

psi

500 ms

164

Injector Metering Rail Pressure

MPa

psi

500 ms

157

Intake Manifold Temperature

°C

°F

500 ms

105

Particulate Filter (DPF) Lamp/Indicator

—

—

500 ms

3697

Percent Load at Current rpm

% % 50 ms

92

Rated Power

watts

watts

On Request

166

Rated rpm

rpm

rpm

On Request

189

Regeneration Disabled (Inhibit) Lamp/Indicator

—

—

500 ms

3703

Shutdown from ECU

Binary (0 or 1)

1 s

1110

Switched Battery Voltage (at ECU)

Vdc

Vdc

1 s

158

Throttle (Accelerator Pedal) Position

% % 50 ms

91

Total Engine Hours

hours

hours

Requested 1.5 s

247

Total Fuel Used

liters

gallons

Requested 1.5 s

250

Transmission Oil Pressure

kPa

psi

1 s

127

Transmission Oil Temperature

°C

°F

1 s

177

Trip Average Fuel Rate

liters

gallons

500 ms

1029

Trip Fuel

liters

gallons

Requested 1.5 s

182

Winding 1 Temperature

°C

°F

1 s

1124

Winding 2 Temperature

°C

°F

1 s

1125

Winding 3 Temperature

°C

°F

1 s

1126

Metric

English

Update Rate

∗

∗ SPN is suspect parameter number.

3-6 DGC-2020 Functional Description 9400200990 Rev X

Table 3-2. Engine Configuration Parameters Obtained from CAN bus Interface

SPN

Engine Speed at High Idle Point 6

rpm

rpm

5 s

532

Engine Speed at Idle Point 1

rpm

rpm

5 s

188

Engine Speed at Point 2

rpm

rpm

5 s

528

Engine Speed at Point 3

rpm

rpm

5 s

529

Engine Speed at Point 4

rpm

rpm

5 s

530

Engine Speed at Point 5

rpm

rpm

5 s

531

Gain (Kp) of End Speed Governor

%/rpm

%/rpm

5 s

545

Maximum Momentary Engine Override Speed Point 7

rpm

rpm

5 s

533

Maximum Momentary Engine Override Time Limit

seconds

seconds

5 s

534

Percent Torque at Idle Point 1

% % 5 s

539

Percent Torque at Point 2

% % 5 s

540

Percent Torque at Point 3

% % 5 s

541

Percent Torque at Point 4

% % 5 s

542

Percent Torque at Point 5

% % 5 s

543

Reference Engine Torque

N•m

ft-lb

5 s

544

Requested Speed Control Range Lower Limit

rpm

rpm

5 s

535

Requested Speed Control Range Upper Limit

rpm

rpm

5 s

536

Requested Torque Control Range Lower Limit

% % 5 s

537

Requested Torque Control Range Upper Limit

% % 5 s

538

CAUTION

SPN

Battle Override Switch

100 ms

1237

Speed Request

10 ms

518

ECU Parameter Metric Units English Units Update Rate

∗

∗ SPN is suspect parameter number.

When the CAN bus is enable d, the DGC-2020 will ignore the following se nder
inputs: oil pressure, coolant temperature, and magnetic pickup.

Under certain circumst ances, the following strings may be displayed on the front panel HMI and in the
Metering Explorer of BESTCOMSPlus®:

• NC (Not Connected) - String displayed for a J1939 parameter when the engine ECU is not

connected to the DGC-2020.

• SF (Sender Fail) - String d isplayed f or a J1939 param eter when t he engine ECU sends a special

code indicating a measurement failure for the parameter. For example, if oil sender is determined
to be bad by the ECU, it se nds a s pec ia l cod e in plac e of the J 1 939 o il pr es sur e d ata i ndicating a
sender fail condition.

• NS (Not Sent) - String d isplayed f or a J193 9 parame ter when the J19 39 para meter has not been

sent to the DGC-2020 by the engine ECU.

• NA (Not Applicable) - String displayed for a J1939 parameter when the engine ECU sends a

special code for the par am eter indicating that the par a meter is no t i mp lem ent ed or not applicable
in the ECU.

• UF (Unknown Failur e) - String dis played w hen the J1939 p arameter d ata receiv ed by t he ECU is

not within the valid J1939 data range for the parameter but is not one of the special codes above.

Table 3-3 lists the J1939 data transmitted from the DGC-2020.

Table 3-3. J1939 Data Transmitted from the DGC-2020

ECU Parameter Update Rate

9400200990 Rev X DGC-2020 Functional Description 3-7

∗

ECU Parameter Update Rate

SPN

Note: Requests from the DGC-2020 to the Engine ECU for various parameters are made by issuing the request.

Address Claim Request

Once on power up, and any time a Global Request for
Address Claim (GRAC) PGN is received.

NA

Request

Trouble Code Request is received.

Previously Active Diagnostic Trouble Codes
Request

2 s

NA

Codes Request

Trouble Code Request is made.

Clear Previously Active Diagnostic Trouble
Codes Request

Whenever a request to reset Previously Active Diagnostic
Trouble Code Request is made.

NA

Engine Hours/Revolutions Request

2 s

NA

Fuel Consumption Request

2 s

NA

Speed and Power) Request

Auxiliary Analog Information

2 s

N/A

Data Transmitted to Marathon DVR2000E+ Voltage Regulator

Primary Voltage Setpoint

1 s

N/A

Alternate Voltage Setpoint

1 s

N/A

Voltage Adjustment Bandwidth

1 s

N/A

Field Current

1 s

N/A

Primary Underfrequency Knee-point

1 s

N/A

Alternate Underfrequency Knee-point

1 s

N/A

Underfrequency Slope

1 s

N/A

Transmission

Repetition Rate

Active diagnostic trouble code

1 s

Lamp status

1 s

Previously active diagnostic trouble code

On request

Request to clear active DTCs

On request

Request to clear previously active DTCs

On request

∗

Currently Active Diagnostic Trouble Codes

Clear Currently Active Diagnostic Trouble

Electronic Engine Controller #4 (Rated

∗ SPN is suspect parameter number.

Whenever a refresh of Currently Active Diagnostic

Whenever a request to reset Currently Active Diagnostic

2 s NA

NA

NA

Diagnostic Trouble Codes (DTCs)

The DGC-2020 obtains di agnostic engine information from a compatible engine contr ol unit (ECU). The
DGC-2020 will receive an unsolicited message of a currently active diagnostic trouble code (DTC).
Previously active DTCs are available upo n request. Active and prev iously active DTCs can be c leared on
request. Table 3-4 lists the diagnostic information that the DGC-20 20 obta ins over the CAN bus interface.

Table 3-4. Diagnostic Information Obtained Over the CAN bus Interface

Parameter

DTCs are reported in coded diagnostic infor mation that includ es the Suspect Pa rameter Number (SPN),
Failure Mode Identifier (FMI), and Occ urrence Count ( OC). All para meters have an SPN a nd are used to
display or identify the item s for which diagnost ics are being rep orted. The FMI d efines the type of fa ilure
detected in the subsy stem i dentified by an SPN. The r epor te d pr ob le m may n ot b e an e lect ric a l fa ilur e bu t
a subsystem condition n eeding to be repor ted to an oper ator or technici an. The OC cont ains the number
of times that a fault has gone from active to previously active.

For certain DTCs, if the DG C-2020 recog nizes a p air of SPN and FMI numbers , it display s a single str ing
as listed in Table 3-6. If the DGC-202 0 recognizes an SPN in Table 3-6, but the FMI does not matc h the
FMI in Table 3-6, then it displays the stri ng fr o m Table 3-6 corresponding to the table entry w here t he F MI
is # and a second string corresponding to the FMI number listed in Table 3-5. For example, if th e DGC­2020 receives SPN 29 and F MI 13 , it disp lays ACC EL P ED AL 2 PO SITN and OU T O F C ALIBR AT ION. If

3-8 DGC-2020 Functional Description 9400200990 Rev X

the DGC-2020 does not have descriptive information about an SPN and FMI that was received, the

FMI

String Displayed

Description

0

DATA HI MOST SEVERE

Data is higher than expected at the most severe level

1

DATA LO MOST SEVERE

Data is lower than expected at the most severe level

2

DATA ERRATIC OR BAD

Data is erratic, intermittent, or incorrect

3

VOLTS HI OR SHORTED

Measured voltage is higher than expected or shorted to a high source

4

VOLTS LO OR SHORTED

Measured voltage is lower than expected or shorted to a low source

5

CURRENT LO OR OPEN

Measured current is lower than expected or the circuit is open

6

CURRENT HI OR SHORTED

Measured current is higher than expected or shorted

7

MECHANICAL SYSTM ERR

Mechanical system error

is outside its predetermined lim its.

9

ABNORMAL UPDATE RATE

Update rate of parameter is abnormal.

10

DATA RT OF CHG ERR

Rate of change of data is abnormal.

11

FAILURE CAUSE UNKNOWN

String indicating failure cause is unknown.

has been detected.

13

OUT OF CALIBRATION

Device or parameter is out of calibration.

14

CONSULT ENG MFG DATA

User should consult engine manufacturer's data.

15

DATA HI LST SEVERE

Data is higher than expected at the least severe level.

16

DATA HI MODERATE SVR

Data is higher than expected at a moderately severe level.

17

DATA LO LST SEVERE

Data is lower than expected at the least severe level.

18

DATA LO MODERATE SVR

Data is lower than expected at a moderately severe level.

19

NETWORK DATA ERR

String Indicating Network Data contained an error indication.

20

DATA DRIFTED HI

Data has drifted to a value higher than the maximum valid value.

21

DATA DRIFTED LO

Data has drifted to a value lower than the minimum valid value.

22

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

23

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

24

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

25

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

26

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

27

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

28

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

29

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

30

FMI RESERVED BY SAE

This FMI is reserved by the Society of Automotive Engineers.

31

CONDTN EXST OR FMI NA

If the SPN refers to a parameter with status of ON or OFF, an FMI of 31

condition.

SPN

FMI

String Displayed

Description

27

#

EGR1 VALVE POSITN

Caption Indicating EGR1 Valve Position

28

3

Throttle Volt HI

Throttle Voltage High

28

4

Throttle Volt LO

Throttle Voltage Low

28

14

Throttle Volt OOR

Throttle Input Voltage Out of Range

29

#

ACCEL PEDAL 2 POSITN

Caption string for accelerator pedal 2 position

29

3

Throttle Volt HI

Throttle Voltage High

29

4

Throttle Volt LO

Throttle Voltage Low

29

14

Throttle Volt OOR

Throttle Input Voltage Out of Range

51

#

ENG THROTTLE POSITN

Caption Indicating Engine Throttle Position

52

15

INTERCOOLER TEMP HI

Engine Intercooler Temperature is above the HIGH threshold

69

#

2 SPEED AXLE SWITCH

Caption Indicating Two Speed Axle Switch

description will display as “NO TEXT AVAILABLE”.

Table 3-5. DTCs Displayed by the DGC-2020 (FMI Strings)

8 FREQ OR PWM ERROR Error in frequency, pulse width or period of any frequency or PWM signal

12 BAD INTELLIGNT DEVICE Engine ECU is reporting that an intelligent device or component failure

indicates ON. If the SPN refers to a parameter with a numeric value, an
FMI of 31 indicates that there is no FMI to describe the parameter’s

Table 3-6. DTCs Displayed by the DGC-2020

9400200990 Rev X DGC-2020 Functional Description 3-9

SPN

FMI

String Displayed

Description

70

#

PARKING BRAKE SWITCH

Caption Indicating Parking Brake Switch

84

#

VEHICLE SPEED

Caption string for vehicle speed signal

91

#

ACCEL POSITION

Caption string for Accelerator Posit ion

91

3

Thr Pos Sns Volt HI

Throttle Position Sensor Input Voltage (High)

91

4

Thr Pos Sns Volt LO

Throttle Position Sensor Input Voltage (Low)

91

14

Thr Pos Sns Volt OOR

Throttle Voltage (Out of Range)

94

1

FUEL DELIV PRS LO LO

Engine Fuel Delivery Pressure is below the LOW LOW
threshold

94

3

Fuel Pmp Prs Volt HI

Fuel Pump Pressure Input Voltage (High)

94

4

Fuel Pmp Prs Volt LO

Fuel Pump Pressure Input Voltage (Low)

94

17

Fuel Pressure LO

Fuel Supply Pressure (Low Least Severe)

96

#

FUEL LEVEL

Caption string for Fuel Level

97

3

Water In Fl Volt HI

Water In Fuel Signal Voltage High

97

4

Water In Fl Volt LO

Water In Fuel Signal Voltage Low

97

16

Water in Fuel

Water In Fuel Detected

98

#

ENG OIL LEVEL

Caption used on front panel for Display of J1939 Parameter

99

#

OIL FILTER DIFF PRESS

Caption string for oil filter differential pressure parameter

100

1

ENG OIL PRESS LO LO

Engine Oil Pressure is below the LOW LOW threshold

100

3

Oil Prs Snsr Volt HI

Oil Pressure Sensor Input Voltage (High)

100

4

Oil Prs Snsr Volt LO

Oil Pressure Sensor Input Voltage (Low)

100

17

ENG OIL PRESS LO

Engine Oil Pressure is below the LOW threshold

100

18

Oil Prs Snsr Volt MLO

Oil Pressure Sensor Input Voltage (Moderately Low)

100

31

Oil Pressure INVLD

Oil Pressure (Invalid)

101

#

CRANKCASE PRESSURE

Caption string for crankcase pressur e

102

#

INTK MNFLD1 PRESSURE

Caption string for intake manifold 1 pressure

102

2

Manifld Air Prs INVD

Manifold Air Pressure Invalid

102

3

Mnfld AirP SnsVlt HI

Manifold Air Pressure Sensor Input Voltage High

102

4

Mnfld AirP SnsVlt LO

Manifold Air Pressure Sensor Input Voltage Low

103

0

Trbo Overspd Severe

Turbo Overspeed (Most Severe)

103

2

Trbo Speed MisMatch

Turbo Speed (Mismatch)

103

5

Trbo Spd Sns Curr LO

Turbo Speed Sensor Current (Low)

103

6

Trbo Spd Sns Curr HI

Turbo Speed Sensor Current (High)

103

8

Trbo Speed INVLD

Turbo Speed (Invalid)

103

31

Trbo Speed MISSING

Turbo Speed (Missing)

105

0

EGR Mixed Air Tmp HI

Exhaust Gas Recirculation Mixed Air High (Least Severe)

105

3

EGR Air Temp Vlt HI

Exhaust Gas Recirculation Mixed Air Temp Voltage (High)

105

4

EGR Air Temp Vlt LO

Exhaust Gas Recirculation Mixed Air Temp Voltage (Low)

105

15

EGR Mixed Air Tmp HI

Exhaust Gas Recirculation Mixed Air High (Least Severe)

105

16

EGR MxdAir Tmp MHI

Exhaust Gas Recirculation Mixed Air Temp (Moderately High)

106

#

INTAKE AIR PRESSR

Caption Indicating Intake Air Pressure

107

0

Air Filt Restricted

Air Filter Restriction (High)

108

2

Barometrc Prs INVLD

Barometric Pressure (Invalid)

108

31

Barometrc Prs ERR

Barometric Pressure (Error)

109

1

ENG COOLNT PRS LO LO

Engine Coolant Pressure is below the LOW LOW threshold

109

17

ENG COOLANT PRS LO

Engine Coolant Pressure is below the LOW threshold

110

0

ENG COOLNT TMP HI HI

Engine Coolant Temperature is above the HIGH HIGH
threshold

110

3

Cool Tmp Sns Volt HI

Coolant Temp Sensor Input Voltage (High)

110

4

Cool Tmp Sns Volt LO

Coolant Temp Sensor Input Voltage (Low)

110

15

ENG COOLANT TEMP HI

Engine Coolant Temperature is above the HIGH threshold

110

16

Cool Temp MHI

Coolant Temp Sensor Input (Moderately High)

110

17

Cool Temp LO

Coolant Temp Sensor Input (Low Least Severe)

111 # LOW COOL LEVEL Low Coolant Level string used in event log and/or Alarm and

Prealarm annunciation

3-10 DGC-2020 Functional Description 9400200990 Rev X

SPN

FMI

String Displayed

Description

111

1

Coolnt Lvl LO

Coolant Level (Low)

111

17

ENG COOLANT LVL LO

Engine Coolant Level is below the LOW thresho ld

157

3

Fuel Rail Prs Vlt HI

Fuel Rail Pressure Input Voltage (High)

157

4

Fuel Rail Prs Vlt LO

Fuel Rail Pressure Input Voltage (Low)

157

10

Fuel Rail Prs LOSS

Fuel Rail Pressure Loss Detected

157

17

Fuel Rl Prs NOT DEV

Fuel Rail Pressure Not Developed

158

#

BATTERY VOLTAGE

Caption Indicating Battery Voltage

158

#

KEY SW BATT VOLTAGE

Caption string for key switch battery potent i al

158

0

KSW BATT VOLTS HI HI

Key Switch Battery Potential is above the HIGH HIGH threshold

158

1

KSW BATT VOLTS LO LO

Key Switch Battery Potential is below the LOW LOW threshold

158

15

KSW BATT VOLTS HI

Key Switch Battery Potential is above the HIGH threshold

158

17

KSW BATT VOLTS LO

Key Switch Battery Potential is below the LOW threshold

161

#

TR INPUT SHAFT SPD

Caption Indicating Transmission Input Shaft Speed

168

#

LOW BATT VOLT

Low Battery Voltage string used in event log and/or Alarm and
Pre-alarm annunciation

174

0

Fuel Temp EXT HI

Fuel Temp (Extremely High)

174

3

Fuel Tmp Sns Volt HI

Fuel Temp Sensor Input Voltage (High)

174

4

Fuel Tmp Sns Volt LO

Fuel Temp Sensor Input Voltage (Low)

174

16

Fuel Temp MHI

Fuel Temp (Moderately High)

175

#

ENG OIL TEMP

Caption used on front panel for Display of J1939 Parameter

188

17

SPEED AT IDLE LO

Metering string for ECU trouble code metering indicates Engine
Idle speed is below the LOW threshold

189

0

Engine Spd DERATE

Engine Speed Derate

190

#

ENGINE SPEED

Caption used on front panel for Display of J1939 Parameter

190

0

Engine OvrSpd EXTRM

Engine Overspeed (Extreme)

190

1

ENGINE SPEED LOW

Engine speed is below the LOW threshold

190

16

Engine OvrSpd MODRT

Engine Overspeed (Moderate)

190

17

SPEED AT IDLE LO

Engine Idle speed is below the LOW threshold

191

#

TR OUTPUT SHAFT SPD

Caption Indicating Transmission Output Shaft Speed

237

2

VIN Data MisMatch

VIN Data Mismatch with other controllers

354

#

RELATIVE HUMIDITY

Caption Indicating Relative Humidity

412

0

EGR Temp EXT HI

Exhaust Gas Recirculation Temp (Extremely High)

412

3

EGR Temp In Vlt HI

Exhaust Gas Recirculation Temp Input Voltage (High)

412

4

EGR Temp In Vlt LO

Exhaust Gas Recirculation Temp Input Voltage (Low)

412

16

EGR Temp MHI

Exhaust Gas Recirculation Temp (Moderately High)

442

#

AUX TEMP 2

Caption Indicating Aux Temperature 2

443

#

BATTERY VOLT 2

Caption Indicating Battery Voltage 2

444

#

AUX PRESSURE2

Caption Indicating Auxiliary Pressure 2

515

#

DESIRED SPEED

Caption string for parameter that indicates speed demand
desired from the engine.

520

#

RETARDER % TORQUE

Caption string for retarder % torque

523

#

TRANS CURRNT GEAR

Caption Indicating Transmission Current Gear

524

#

TRANS SELECTD GEAR

Caption Indicating Transmission Selected Gear

558

#

ACCEL PEDAL IDLE SW

Caption Indicating Accelerator Pedal Idle Switch

559

#

ACCEL PEDAL KICKDN SW

Caption Indicating Accelerator Pedal Kickdown Switch

563

#

ABS ACTIVE

Caption String for Antilock Brake System (ABS) active

573

#

TRQCNV LOCKUP ENGAGD

Caption Indicating Transmission Torque Converter Lockup
Engaged

574

#

TR SHIFT IN PROGRESS

Caption Indicating Transmission Shift in Process

596

#

CRUISE CNTL ENABLE SW

Caption Indicating Cruise Control Enable Switch

597

#

BRAKE SWITCH

Caption Indicating Brake Switch

598

#

CLUTCH SWITCH

Caption Indicating Clutch Switch

599

#

CRUISE CNTL SET SW

Caption Indicating Cruise Control Set Switch

600

#

CRUISE CNTL COAST SW

Caption Indicating Cruise Control Coast (Decelerate) Switch

9400200990 Rev X DGC-2020 Functional Description 3-11

SPN

FMI

String Displayed

Description

601

#

CRUISE CNTL RESUME SW

Caption Indicating Cruise Control Resume Switch

602

#

CRUISE CNTL ACCEL SW

Caption Indicating Cruise Control Accelerate Switch

609

#

CONTROLLER #2

Caption Indicating Controller Number 2

611

#

SYS DIAGNST CODE 1

Caption Indicating System Diagnostic Code 1

611

3

Inj Short to PWR

Injector Wiring Shorted to Power

611

4

Inj Short to GND

Injector Wiring Shorted to Ground

620

#

5 VOLT SUPPLY

Caption Indicating 5 Volt Supply

623

#

RED STOP LAMP

Caption Indicating Red Stop Lamp

624

#

DIAGNOSTIC LAMP

Caption String for Diagnostic Lamp

624

#

COMBINED YELLOW

Caption Indicating a Yellow Alarm from the Engine ECU

625

#

PROP COMM NETWK 1

Caption Indicating Proprietary Communications Network 1

627

1

Inj Spply Vlt Problm

Injector Supply Voltage Probl em

627

13

ECU ERROR

ECU Error

627

16

ECU Power Volt HI

ECU Power High Voltage

627

18

ECU Power Volt LO

ECU Power Low Voltage

628

#

PROGRAM MEMORY

Caption Indicating Program Memory

629

#

CONTROLLER #1

Caption Indicating Controller 1

630

#

ECU INTERNAL ERROR

Caption string for ECU Internal Error

630

#

ECU INTERNAL ERROR

Caption string for ECU Internal Error

636

#

ENG POSITION SENSOR

Caption Indicating Engine Position Sensor

636

2

Pump Pos Sns Noisy

Pump Position Sensor Input Noise

636

5

Pump Pos Sns Curr LO

Pump Position Sensor Current (Low)

636

6

Pump Pos Sns Curr HI

Pump Position Sensor Current (High)

636

8

Pump Pos Sns In MSNG

Pump Position Sensor Input Missing

636

10

Pump Pos Sns In ERR

Pump Position Sensor Input Pattern Error

637

2

Crank Pos Sns Noisy

Crank Position Input Noise

637

5

Crank Pos Sns Curr LO

Crank Position Sensor Current (Low)

637

6

Crank Pos Sns Curr HI

Crank Position Sensor Current (High)

637

7

Crnk/Pmp Pos Tmg OOS

Crank/Pump Position Timing Moderately Out of Sync

637

8

Crank Pos Sns MSNG

Crank Position Missing

637

10

Crank Pos Sns In ERR

Crank Position Input Pattern Error

639

#

J1939 NETWORK 1

Caption String for J1939 Network number 1

641

4

Trbo Actuator ERR

Turbo Actuator Error

641

12

ECU/Trbo Comm ERR

ECU/Turbo Communication Error

641

13

TrboAct Lrnd Val ERR

Turbo Actuator Learned Value Error

641

16

Trbo Act Temp MHI

Turbo Actuator Temp (Moderately High)

645

#

J1939 NETWORK 1

Caption String for J1939 Network number 1

651

#

CYLINDER 1 INJECTOR

Caption String for Cylinder 1 Injector

651

2

Cyl 1 EUI PN INVLD

Cylinder #1 EUI Part Number (Invalid)

651

5

Cyl 1 EUI Ckt OPEN

Cylinder #1 EUI Circuit (Open)

651

6

Cyl 1 EUI Ckt SHORT

Cylinder #1 EUI Circuit (Shorted)

651

7

Cyl 1 EUI Ckt MECH FL

Cylinder #1 EUI Circuit (Mechanical Failure)

651

13

Cyl 1 EUI QR INVLD

Cylinder #1 EUI Circuit QR Code (Invalid)

652

#

CYLINDER 2 INJECTOR

Caption String for Cylinder 2 Injector

652

2

Cyl 2 EUI PN INVLD

Cylinde r #2 EUI Part Number (Invalid)

652

5

Cyl 2 EUI Ckt OPEN

Cylinder #2 EUI Circuit (Open)

652

6

Cyl 2 EUI Ckt SHORT

Cylinder #2 EUI Circuit (Shorted)

652

7

Cyl 2 EUI Ckt MECH FL

Cylinder #2 EUI Circuit (Mechanical Failure)

652

13

Cyl 2 EUI QR INVLD

Cylinder #2 EUI Circuit QR Code (Invalid)

653

#

CYLINDER 3 INJECTOR

Caption String for Cylinder 3 Injector

653

2

Cyl 3 EUI PN INVLD

Cylinder #3 EUI Part Number (Invalid)

653

5

Cyl 3 EUI Ckt OPEN

Cylinder #3 EUI Circuit (Open)

653

6

Cyl 3 EUI Ckt SHORT

Cylinder #3 EUI Circuit (Shorted)

3-12 DGC-2020 Functional Description 9400200990 Rev X

SPN

FMI

String Displayed

Description

653

7

Cyl 3 EUI Ckt MECH FL

Cylinder #3 EUI Circuit (Mechanical Failure)

653

13

Cyl 3 EUI QR INVLD

Cylinder #3 EUI Circuit QR Code (Invalid)

654

#

CYLINDER 4 INJECTOR

Caption String for Cylinder 4 Injector

654

2

Cyl 4 EUI PN INVLD

Cylinder #4 EUI Part Number (Invalid)

654

5

Cyl 4 EUI Ckt OPEN

Cylinder #4 EUI Circuit (Open)

654

6

Cyl 4 EUI Ckt SHORT

Cylinder #4 EUI Circuit (Shorted)

654

7

Cyl 4 EUI Ckt MECH FL

Cylinder #4 EUI Circuit (Mechanical Failure)

654

13

Cyl 4 EUI QR INVLD

Cylinder #4 EUI Circuit QR Code (Invalid)

655

#

CYLINDER 5 INJECTOR

Caption String for Cylinder 5 Injector

655

2

Cyl 5 EUI PN INVLD

Cylinder #5 EUI Part Number (Invalid)

655

5

Cyl 5 EUI Ckt OPEN

Cylinder #5 EUI Circuit (Open)

655

6

Cyl 5 EUI Ckt SHORT

Cylinder #5 EUI Circuit (Shorted)

655

7

Cyl 5 EUI Ckt MECH FL

Cylinder #5 EUI Circuit (Mechanical Failure)

655

13

Cyl 5 EUI QR INVLD

Cylinder #5 EUI Circuit QR Code (Invalid)

656

#

CYLINDER 6 INJECTOR

Caption String for Cylinder 6 Injector

656

2

Cyl 6 EUI PN INVLD

Cylinder #6 EUI Part Number (Invalid)

656

5

Cyl 6 EUI Ckt OPEN

Cylinder #6 EUI Circuit (Open)

656

6

Cyl 6 EUI Ckt SHORT

Cylinder #6 EUI Circuit (Shorted)

656

7

Cyl 6 EUI Ckt MECH FL

Cylinder #6 EUI Circuit (Mechanical Failure)

656

13

Cyl 6 EUI QR INVLD

Cylinder #6 EUI Circuit QR Code (Invalid)

657

#

CYLINDER 7 INJECTOR

Caption String for Cylinder 7 Injector

658

#

CYLINDER 8 INJECTOR

Caption String for Cylinder 8 Injector

659

#

CYLINDER 9 INJECTOR

Caption String for Cylinder 9 Injector

660

#

CYLINDER 10 INJECTOR

Caption String for Cylinder 10 Injector

661

#

CYLINDER 11 INJECTOR

Caption String for Cylinder 11 Injector

662

#

CYLINDER 12 INJECTOR

Caption String for Cylinder 12 Injector

663

#

CYLINDER 13 INJECTOR

Caption String for Cylinder 13 Injector

664

#

CYLINDER 14 INJECTOR

Caption String for Cylinder 14 Injector

665

#

CYLINDER 15 INJECTOR

Caption String for Cylinder 15 Injector

666

#

CYLINDER 16 INJECTOR

Caption String for Cylinder 16 Injector

667

#

CYLINDER 17 INJECTOR

Caption String for Cylinder 17Injector

668

#

CYLINDER 18 INJECTOR

Caption String for Cylinder 18 Injector

669

#

CYLINDER 19 INJECTOR

Caption String for Cylinder 19 Injector

670

#

CYLINDER 20 INJECTOR

Caption String for Cylinder 20 Injector

671

#

CYLINDER 21 INJECTOR

Caption String for Cylinder 21 Injector

672

#

CYLINDER 22 INJECTOR

Caption String for Cylinder 22 Injector

673

#

CYLINDER 23 INJECTOR

Caption String for Cylinder 23 Injector

674

#

CYLINDER 24 INJECTOR

Caption String for Cylinder 24 Injector

675

#

ENG GLOW PLUG LAMP

Caption Indicating Glow Plug Lamp

676

#

ENG GLOW PLUG RELAY

Caption String for Engine Glow Plug Relay

677

#

ENGINE START RELAY

Caption String for Engine Start Relay

697

#

AUX PWM DRIVER 1

Caption Indicating Auxiliary PWM Driver 1

698

#

AUX PWM DRIVER 2

Caption Indicating Auxiliary PWM Driver 2

699

#

AUX PWM DRIVER 3

Caption Indicating Auxiliary PWM Driver 3

700

#

AUX PWM DRIVER 4

Caption Indicating Auxiliary PWM Driver 4

701

#

AUX I/O 1

Caption String for Auxiliary I/O 1

702

#

AUX I/O 2

Caption String for Auxiliary I/O 2

703

#

AUX I/O 3

Caption String for Auxiliary I/O 3

704

#

AUX I/O 4

Caption String for Auxiliary I/O 4

705

#

AUX I/O 5

Caption String for Auxiliary I/O 5

706

#

AUX I/O 6

Caption String for Auxiliary I/O 6

707

#

AUX I/O 7

Caption String for Auxiliary I/O 7

708

#

AUX I/O 8

Caption String for Auxiliary I/O 8

9400200990 Rev X DGC-2020 Functional Description 3-13

SPN

FMI

String Displayed

Description

709

#

AUX I/O 9

Caption String for Auxiliary I/O 9

710

#

AUX I/O 10

Caption String for Auxiliary I/O 10

711

#

AUX I/O 11

Caption String for Auxiliary I/O 11

712

#

AUX I/O 12

Caption String for Auxiliary I/O 12

713

#

AUX I/O 13

Caption String for Auxiliary I/O 13

714

#

AUX I/O 14

Caption String for Auxiliary I/O 14

715

#

AUX I/O 15

Caption String for Auxiliary I/O 15

716

#

AUX I/O 16

Caption String for Auxiliary I/O 16

723

#

SPEED SENSOR #2

Caption Indicating Engine Speed Sensor #2

724

#

O2 SENSOR

Caption Indicating O2 Sensor

729

#

INTAKE HEATER #1

Caption Indicating Intake Air Heater #1

730

#

INTAKE HEATER #2

Caption Indicating Intake Air Heater #2

731

#

KNOCK SENSOR #1

Caption Indicating Knock Sensor 1

870

#

HEATER REGEN SYSTM

Caption Indicating Heater Regeneration System

898

#

ENGINE REQSTED SPEED

Caption String for Engine Requested Speed

898

2

REQ SPD DATA ERRATIC

Speed Demand Data is erratic

898

9

Spd/Trq Msg INVLD

Vehicle Speed/Torque Message Invalid

904

#

FRONT AXLE SPEED

Caption Indicating Front Axle Speed

920

#

AUDIBLE ALARM

Caption Indicating Audible Alarm

923

#

PWM OUTPUT

Caption String for Engine PWM Output

924

#

AUX OUT #1

Caption Indicating Auxiliary Output 1

925

#

AUX OUT #2

Caption Indicating Auxiliary Output 2

926

#

AUX OUT #3

Caption Indicating Auxiliary Output 3

970

2

Aux Eng SD SW INVLD

Auxiliary Engine Shutdown Switch (Invalid)

970

31

Aux Eng SD SW ACTV

Auxiliary Engine Shutdown Switch Active

971

31

Eng Derate SW ACTV

External Engine Derate Switch Active

973

#

ENG RETARDR SELECTN

Caption Indicating Engine Retarder Selection

974

#

REMOTE ACCEL PEDAL

Caption Indicating Remote Accelerator Pedal

975

#

FAN SPEED

Caption String for Engine Fan Speed

986

#

REQSTD FAN SPEED

Caption Indicating Requested Fan Speed

1004

#

TRIP VEH IDLE FL USED

Caption Indicating Trip Vehicle Idle Fuel Used

1005

#

TRIP CRUISE FL USED

Caption Indicating Trip Cruise Fuel Used

1015

#

TRIP AVG LOAD FACTOR

Caption Indicating Trip Average Load Factor

1072

#

ENG BRAKE OUTPUT 1

Caption String for Engine Brake Output 1

1072

#

ENG COMPR BRK OUTPUT1

Caption Indicating Eng ine (C o m pressi on) Br ake Ou tput 1

1073

#

ENG COMPR BRK OUTPUT2

Caption Indicating Engine (Compression) Brake Output 2

1074

#

ENG EXHAUST BRAKE OUT

Caption String for Engine Exhaust Brake Output

1075

5

Fuel TR Pump Curr LO

Fuel Transfer Pump Current (Low)

1075

6

Fuel TR Pump Curr HI

Fuel Transfer Pump Current (High)

1075

12

Fuel TR Pump ERR

Fuel Transfer Pump (Error)

1079

#

SENSOR SUPPLY VOLTS 1

Caption String for Sensor Supply Voltage 1

1080

#

SENSOR SUPPLY VOLTS 2

Caption String for Sensor Supply Voltage 2

1080

3

Snsr Supp 1 Volt LO

Sensor Supply 1 Voltage (Low)

1080

4

Snsr Supp 1 Volt HI

Sensor Supply 1 Voltage (High)

1081

#

ENG WAIT TO START LMP

Caption String for Engine Wait to Start Lamp

1109

#

EPS SHUTDN APPROACHG

Caption String for indication that Engine Protective System
Shutdown Is Approaching

1109

31

Eng Shutdown WARNING

Engine Shutdown Warning

1110

31

Eng Prot Shutdown

Engine Protection Shutdown

1127

#

TURBOCHG1 BOOST PRS

Caption Indicating Turbo Charger 1 Boost Pressure

1128

#

TURBOCHG2 BOOST PRS

Caption Indicating Turbo Charger 2 Boost Pressure

1129

#

TURBOCHG3 BOOST PRS

Caption Indicating Turbo Charger 3 Boost Pressure

1130

#

TURBOCHG4 BOOST PRS

Caption Indicating Turbo Charger 4 Boost Pressure

3-14 DGC-2020 Functional Description 9400200990 Rev X

SPN

FMI

String Displayed

Description

1132

#

INTK MNFLD3 TEMP

Caption Indicating Intake Manifold 3 Temperature

1133

#

INTK MNFLD4 TEMP

Caption Indicating Intake Manifold 4 Temperature

1136

0

ECU Temp EXT HI

ECU Temperature (Extremely High)

1136

15

ENG ECU TEMP HI

ECU Temperature has exceeded the HIGH level

1136

16

ECU Temp MHI

ECU Temperature (Moderately High)

1172

3

Trbo Cmp Tmp Volt HI

Turbo Compressor Inlet Temp Input Voltage (High)

1172

4

Trbo Cmp Tmp Volt LO

Turbo Compressor Inlet Temp Input Voltage (Low)

1172

16

Trbo Cmp In Tmp MHI

Turbo Compressor Inlet Temp (M oderately High)

1180

0

Trbo Trbn Tmp EXT HI

Turbo Turbine Inlet Temp (Extremely High)

1180

16

Trbo Trbn In Tmp MHI

Turbo Turbine Inlet Temp (Moderately High)

1184

#

TURBOCHG1 OUTLET TEMP

Caption Indicating Turbo Charger 1 Outlet Temperature

1185

#

TURBOCHG2 OUTLET TEMP

Caption Indicating Turbo Charger 2 Outlet Temperature

1186

#

TURBOCHG3 OUTLET TEMP

Caption Indicating Turbo Charger 3 Outlet Temperature

1187

#

TURBOCHG4 OUTLET TEMP

Caption Indicating Turbo Charger 4 Outlet Temperature

1188

#

TRBO WST GT ACT1 POS

Caption Indicating Turbo Waste Gate Actuator 1 Position

1189

#

TRBO WST GT ACT2 POS

Caption Indicating Turbo Waste Gate Actuator 2 Position

1192

#

TRBO WSTGT ACT AIR PR

Caption Indicating Engine Turbocharger Waste gate Actuator
Control Air Pressure

1213

#

MALFUNC LAMP

Caption string for the malfunction indicator lamp status that is

broadcast by ECU as part of diagnostic trouble code

information

1227

#

TEST LIMIT MAX

Caption Indicating Test Limit Maximum

1231

#

J1939 NETWORK 2

Caption String for J1939 Network number 2

1235

#

J1939 NETWORK 3

Caption String for J1939 Network number 3

1237

#

ENG SHUTDN ORIDE SW

Caption String for Engine Shutdown Override Switch

1240

#

FUEL LEAKAGE2

Caption Indicating Fuel Leakage 2 Parameter

1268

#

IGNITION COIL 1

Caption Indicating Engine Ignition Coil 1

1269

#

IGNITION COIL 2

Caption Indicating Engine Ignition Coil 2

1270

#

IGNITION COIL 3

Caption Indicating Engine Ignition Coil 3

1271

#

IGNITION COIL 4

Caption Indicating Engine Ignition Coil 4

1272

#

IGNITION COIL 5

Caption Indicating Engine Ignition Coil 5

1273

#

IGNITION COIL 6

Caption Indicating Engine Ignition Coil 6

1274

#

IGNITION COIL 7

Caption Indicating Engine Ignition Coil 7

1275

#

IGNITION COIL 8

Caption Indicating Engine Ignition Coil 8

1276

#

IGNITION COIL 9

Caption Indicating Engine Ignition Coil 9

1277

#

IGNITION COIL 10

Caption Indicating Engine Ignition Coil 10

1278

#

IGNITION COIL 11

Caption Indicating Engine Ignition Coil 11

1279

#

IGNITION COIL 12

Caption Indicating Engine Ignition Coil 12

1280

#

IGNITION COIL 13

Caption Indicating Engine Ignition Coil 13

1281

#

IGNITION COIL 14

Caption Indicating Engine Ignition Coil 14

1282

#

IGNITION COIL 15

Caption Indicating Engine Ignition Coil 15

1283

#

IGNITION COIL 16

Caption Indicating Engine Ignition Coil 16

1284

#

IGNITION COIL 17

Caption Indicating Engine Ignition Coil 17

1285

#

IGNITION COIL 18

Caption Indicating Engine Ignition Coil 18

1286

#

IGNITION COIL 19

Caption Indicating Engine Ignition Coil 19

1287

#

IGNITION COIL 20

Caption Indicating Engine Ignition Coil 20

1288

#

IGNITION COIL 21

Caption Indicating Engine Ignition Coil 21

1289

#

IGNITION COIL 22

Caption Indicating Engine Ignition Coil 22

1290

#

IGNITION COIL 23

Caption Indicating Engine Ignition Coil 23

1291

#

IGNITION COIL 24

Caption Indicating Engine Ignition Coil 24

1321

#

STARTER LKOUT RLY DRV

Caption Indicating Engine Starter Solenoid Lockout Relay
Driver Circuit

1322

#

MULTI CYL MISFIRE

Caption String for Misfire detected on multiple engine cylinders

1323

#

MISFIRE CYLINDER 1

Caption String for Misfire detected on a single engine cylinder

9400200990 Rev X DGC-2020 Functional Description 3-15

SPN

FMI

String Displayed

Description

1324

#

MISFIRE CYLINDER 2

Caption String for Misfire detected on a single engine cylinder

1325

#

MISFIRE CYLINDER 3

Caption String for Misfire detected on a single engine cylinder

1326

#

MISFIRE CYLINDER 4

Caption String for Misfire detected on a single engine cylinder

1327

#

MISFIRE CYLINDER 5

Caption String for Misfire detected on a single engine cylinder

1328

#

MISFIRE CYLINDER 6

Caption String for Misfire detected on a single engine cylinder

1329

#

MISFIRE CYLINDER 7

Caption String for Misfire detected on a single engine cylinder

1330

#

MISFIRE CYLINDER 8

Caption String for Misfire detected on a single engine cylinder

1331

#

MISFIRE CYLINDER 9

Caption String for Misfire detected on a single engine cylinder

1332

#

MISFIRE CYLINDER 10

Caption String for Misfire detected on a single engine cylinder

1333

#

MISFIRE CYLINDER 11

Caption String for Misfire detected on a single engine cylinder

1334

#

MISFIRE CYLINDER 12

Caption String for Misfire detected on a single engine cylinder

1335

#

MISFIRE CYLINDER 13

Caption String for Misfire detected on a single engine cylinder

1336

#

MISFIRE CYLINDER 14

Caption String for Misfire detected on a single engine cylinder

1337

#

MISFIRE CYLINDER 15

Caption String for Misfire detected on a single engine cylinder

1338

#

MISFIRE CYLINDER 16

Caption String for Misfire detected on a single engine cylinder

1339

#

MISFIRE CYLINDER 17

Caption String for Misfire detected on a single engine cylinder

1340

#

MISFIRE CYLINDER 18

Caption String for Misfire detected on a single engine cylinder

1341

#

MISFIRE CYLINDER 19

Caption String for Misfire detected on a single engine cylinder

1342

#

MISFIRE CYLINDER 20

Caption String for Misfire detected on a single engine cylinder

1343

#

MISFIRE CYLINDER 21

Caption String for Misfire detected on a single engine cylinder

1344

#

MISFIRE CYLINDER 22

Caption String for Misfire detected on a single engine cylinder

1345

#

MISFIRE CYLINDER 23

Caption String for Misfire detected on a single engine cylinder

1346

#

MISFIRE CYLINDER 24

Caption String for Misfire detected on a single engine cylinder

1347

#

FUEL PUMP ASSY #1

Caption Indicating Fuel Pump Pressurizing Assembly #1

1347

3

Pump Ctrl Vlv Curr HI

Pump Control Valve Current (High)

1347

5

Pmp Ctrl Vlv C MSMCH

Pump Control Valve Current (Mismatch)

1347

7

Fuel Rl Prs Ctrl ERR

Fuel Rail Pressure Control (Error)

1348

#

FUEL PUMP ASSY #2

Caption Indicating Fuel Pump Pressurizing Assembly #2

1350

#

TIME SINCE LST SERVC

Caption Indicating Time Since Last Service

1384

#

J1939 COMANDED SHUTDN

Caption Indicating J1939 Commanded Shutdown

1385

#

AUX TEMP 1

Caption Indicating Aux Temperature 1

1386

#

AUX TEMP 2

Caption Indicating Aux Temperature 2

1387

#

AUX PRESSURE1

Caption Indicating Auxiliary Pressure 1

1388

#

AUX PRESSURE2

Caption Indicating Auxiliary Pressure 2

1390

#

FUEL VALVE1 INLET PRS

Caption Indicating Fuel Valve 1 Inlet Pressure

1485

#

ECU MAIN RELAY

Caption Indicating ECM Main Relay

1569

#

Engine Torque Derate

Engine Torque Derate

1569

31

Fuel Derate

Fuel Derate

1623

#

TACOGRPH OUT SHFT SPD

Caption Indicating Tachograph Output Shaft Speed

1624

#

TACOGRPH VEHICLE SPD

Caption Indicating Tachograph Vehicle Speed

1633

#

CRUISE CNTL PAUSE SW

Caption Indicating Cruise Control Pause Switch

1634

#

CALIB VERIFICATN NMBR

Caption Indicating Calibration Verification Number

1636

#

INTK MNFD1 TMP HI RES

Caption Indicating Intake Manifold 1 Air Temperature (High
Resolution)

1638

#

HYDRAULIC TEMP

Caption String for Hydraulic Temperature

1639

1

Fan Speed Zero

Fan Speed Detected (Zero)

1639

16

Fan Speed HI

Fan Speed Detected (High)

1639

18

Fan Speed LO

Fan Speed Detected (Low)

1692

INTKMNFLD1 DESIRD PR

Caption Indicating Engine Intake Manifold Desired Absolute
Pressure

1695

#

EGO SNSR FUEL CORRCTN

Caption Indicating Exhaust Gas Oxygen Sensor Fueling
Correction

1716

#

RETRDR SEL NON ENGINE

Caption Indicating Retarder Selection non-engine

1761

#

DEF 1 TANK LEVEL

Diesel Exhaust Fluid 1 Tank Level

#

3-16 DGC-2020 Functional Description 9400200990 Rev X

SPN

FMI

String Displayed

Description

1908

#

AUX VLV0 STATE CMD

Caption Indicating Aux Valve 0 State Command

2000

13

Security Violation

Security Violation

2005

9

TSC CAN Msg NT RCV

TSC CAN Message Not Received

2030

9

AC Clutch Msg NT RCV

A/C Clutch Status CAN Message Not Received

2071

9

Tr Oil Can Msg NT RCV

Trans. Oil, Tier Size, Vehicle Speed CAN Message Not
Received

2436

#

GEN AVG FREQUENCY

Caption Indicating Generator Average AC Frequency

2629 0 TRBO 1 OUT TMP HI HI Turbocharger 1 outlet pressure is above the HIGH HIGH

threshold

2629

15

TURBO 1 OUT TMP HI

Turbocharger 1 outlet pressure is above the HIGH threshold

2630

0

EGR FrAir Tmp EXT HI

Exhaust Gas Recirculation Fresh Air Temp (Extremely High)

2630

3

EGR FrAir Tmp Vlt HI

Exhaust Gas Recirculation Fresh Air Temp Input Voltage (High)

2630

4

EGR FrAir Tmp Vlt LO

Exhaust Gas Recirculation Fresh Air Temp Input Voltage (Low)

2630

15

EGR FrAir Tmp HI

Exhaust Gas Recirculation Fresh Air Temp (High Least Severe)

2630

16

EGR FrAir Tmp MHI

Exhaust Gas Recirculation Fresh Air Temp (Moderately High)

2634

#

POWER RELAY

Caption String for main Power Relay

2646

#

AUX OUT #4

Caption Indicating Auxiliary Output 4

2647

#

AUX OUT #5

Caption Indicating Auxiliary Output 5

2659

2

EGR Flo/Tmp MI SMATCH

Exhaust Gas Recirculation Flow/Temp Mismatch

2659

15

EGR Flo Rt High

Exhaust Gas Recirculation Flow Rate (High Least Severe)

2659

17

EGR Flo Rt LO

Exhaust Gas Recirculation Flow Rate (Low Least Severe)

2790

16

Trbo Cmp Out Tmp HI

Turbo Compressor Outlet Temp (Moderately High)

2791

#

EGR VALVE CONTROL

Caption String for EGR Valve Control

2791

2

EGR Vlv Pos Invld

Exhaust Gas Recirculation Valve Position Invalid

2791

3

EGRVlv Pos In Vlt HI

Exhaust Gas Recirculation Valve Position Input Voltage (High)

2791

4

EGRVlv Pos In Vlt LO

Exhaust Gas Recirculation Valve Position Input Voltage (Low)

2791

13

EGR Vlv Control ERR

Exhaust Gas Recirculation Valve Control Error

2791

31

EGR Valve Cal ERR

Exhaust Gas Recirculation Valve Calibration Error

2795

7

Trbo Act Pos MSMATCH

Turbo Actuator Position Mismatch

2797

#

INJECTOR GROUP 1

Caption Indicating Engine Injector Group 1

2798

#

INJECTOR GROUP 2

Caption Indicating Engine Injector Group 2

2899

#

START ENABL DEV 1 CFG

Caption Indicating Engine Start Enable Device 1 Configuration

3050

#

CATALYST SYSTM MONITR

Caption Indicating Catalyst 1 System Monitor

3056

#

EGO SENSOR MONITOR 1

Caption Indicating Exhaust Gas Oxygen Sensor 1 Monitor

3057

#

EGO SENSOR MONITOR 2

Caption Indicating Exhaust Gas Oxygen Sensor 2 Monitor

3217

#

AFTR TRT 1 INTK O2

Caption Indicating Aftertreatment 1 Intake O2

3218

#

AFT1 INTK SNSPWR IN RG

Caption Indicating Aftertreatment 1 Intake Gas Sensor Power In
Range

3219

AFT1 INTK SNSR AT TMP

Caption Indicating Aftertreatment 1 Intake Gas Sensor at
Temperature

3220

#

AFT1 INTK NOX STBL

Caption Indicating Aftertreatment 1 Intake NOx Reading Stable

3221

AFT1 INTK WR O2 STBL

Caption Indicating Aftertreatment 1 Intake Wide-Range Percent
O2 Reading Stable

3222

#

AFT1 INTK SNS HTR FMI

Caption Indicating Aftertreatment 1 Intake Gas Sensor Heater
Preliminary FMI

3224

#

AFT1 INTK NOXSNSR FMI

Caption Indicating Aftertreatment 1 Intake NOx Sensor
Preliminary FMI

3225

AFT1 INTK O2 SNSR FMI

Caption Indicating Aftertreatment 1 Intake O2 Sensor
Preliminary FMI

3232

#

AFT1 OUT SNS HTR FMI

Caption Indicating Aftertreatment 1 Outlet Gas Sensor Heater
Preliminary FMI

3234

#

AFT1 OUT NOX SNSR FMI

Caption Indicating Aftertreatment 1 Outlet NOx Sensor
Preliminary FMI

3250

DPF INTRMED GAS TEMP

Caption Indicating Aftertreatment 1 Diesel Particulate Filter
Intermediate Gas Temperature

3256

#

AFTR TRT 2 INTK O2

Caption Indicating Aftertreatment 2 Intake Percent O2

#

#

#

#

9400200990 Rev X DGC-2020 Functional Description 3-17

SPN

FMI

String Displayed

Description

3257

#

AFT2 INTK SNSPWR IN RG

Caption Indicating Aftertreatment 2 Intake Gas Sensor Power In
Range

3260

#

AFT2 INTK WR O2 STBL

Caption Indicating Aftertreatment 2 Intake Wide-Range Percent
O2 Reading Stable

3261

#

AFT2 INTK SNS HTR FMI

Caption Indicating Aftertreatment 2 Intake Gas Sensor Heater
Preliminary FMI

3264

AFT2 INTK O2 SNSR FMI

Caption Indicating Aftertreatment 2 Intake O2 Sensor
Preliminary FMI

3271

#

AFT2 OUT SNS HTR FMI

Caption Indicating Aftertreatment 2 Outlet Gas Sensor Heater
Preliminary FMI

3361

#

AFT1 CTLYST DOSE UNIT

Caption Indicating Aftertreatment 1 SCR Catalyst Dosing Unit

3363

#

AFT1 SCR TANK HTR

Caption Indicating Aftertreatment 1 SCR Tank Heater

3464

#

THROTTLE ACT 1 CNTL

Caption Indicating Throttle Actuator 1 Control

3465

#

THROTTLE ACT 2 CNTL

Caption Indicating Throttle Actuator 2 Control

3485

#

AFT1 SUPPLY AIR PRESS

Caption Indicating Aftertreatment 1 Supply Air Pressure

3509

#

SENSOR SUPPLY VOLTS 1

Caption String for Sensor Supply Voltage 1

3510

#

SENSOR SUPPLY VOLTS 2

Caption String for Sensor Supply Voltage 2

3511

#

SNSR SUPPLY VOLT 3

Caption Indicating Sensor Supply Voltage 3

3512

#

SNSR SUPPLY VOLT 4

Caption Indicating Sensor Supply Voltage 4

3513

#

SNSR SUPPLY VOLT 5

Caption Indicating Sensor Supply Voltage 5

3514

#

SNSR SUPPLY VOLT 6

Caption Indicating Sensor Supply Voltage 6

3515

#

DEF TEMP

String for Diagnostic Trouble Code Indicating DEF Temperature

3516

#

DEF CONCENTRATION

Caption Indicating Aftertreatment 1 SCR Catalyst Reagent
Concentration

3520

#

DEF QUALITY

Caption Indicating Aftertreatment 1 SCR Catalyst Reagent
Properties Preliminary FMI

3597

#

ECU SUPPLY VOLTAGE 1

Caption Indicating ECU Power Supply Voltage 1

3598

#

ECU SUPPLY VOLTAGE 2

Caption Indicating ECU Power Supply Voltage 2

3599

#

ECU SUPPLY VOLTAGE 3

Caption Indicating ECU Power Supply Voltage 3

3601

#

FUEL VLV LK TEST CTL

Caption Indicating Engine Fuel Shutoff Valve Leak Test Control

3605

#

COOLANT PUMP CTL

Caption Indicating Coolant Pump Control

3609

#

DPF INTAKE PRESSR 1

Caption Indicating DPF Intake Pressure 1

3610

#

DPF OUTLET PRESSR 1

Caption Indicating DPF Outlet Pressure 1

3611

#

DPF INTAKE PRESSR 2

Caption Indicating DPF Intake Pressure 2

3612

#

DPF OUTLET PRESSR 2

Caption Indicating DPF Outlet Pressure 2

3673

#

THROTTLE POSITION 2

Caption Indicating Engine Trhottle 2 Position

Filter Soot Level High - Most Severe Level

3719

15

DPF SOOT LVL HI

String for Diagnostic Trouble Code Indicating Diesel Particulate

3719

16

DPF SOOT LVL MOD HI

String for Diagnostic Trouble Code Indicating Diesel Particulate
Filter Soot Level High - M od er at el y Severe Lev el

3822

EGR1 VLV 2 POSITION

Caption Indicating Engine Exhaust Gas Recirculation 1 Valve 2
Position

3826

#

DEF AVG CONSUMPTION

Caption Indicating DEF Average Consumption

3828

#

DEF CURRNT CONSUMPTN

Caption Indicating DEF Current Consumption

4096

#

NOx HI DEF EMPTY

NOx Limits Exceeded Due to Diesel Exhaust Fluid Empty

4213

#

ENG CRNK WITHOUT_FUEL

Caption Indicating Engine Crank Without Fuel

4332

#

DEF SYSTEM STATE

Caption Indicating DEF System State

4334

#

DEF ABSOLUTE PRESSR

Caption Indicating DEF Absolute Pressure

4335

#

DEF DOSING AIR ABS PR

Caption Indicating DEF Dosing Air Assist Absolute Pressure

4336

#

AFT1 DOSE AIR ASSTVLV

Caption Indicating Aftertreatment 1 SCR Dosing Air Assist
Valve

4354

AFT1 DEF LINE HTR

Caption Indicating Aftertreatment 1 SCR Catalyst Reagent Line
Heater 1

4364

#

SCR CNVRSN EFFICIENCY

Caption Indicating SCR Conversion Efficiency

4755

AFT1 CTLYST DIFF PRS

Caption Indicating Aftertreatment 1 Gas Oxidation Catalyst
Differential Pressure

#

3719 0 DPF SOOT LVL EXT HI String for Diagnostic Trouble Code Indicating Diesel Particulate

#

#

#

3-18 DGC-2020 Functional Description 9400200990 Rev X

Filter Soot Level High - Least Severe Level

SPN

FMI

String Displayed

Description

4794

#

AFT1 CTLYST SYS MSSNG

Caption Indicating Aftertreatment 1 SCR Catalyst System
Missing

4809

#

AFT1 DEF WARM IN TMP

Caption Indicating Aftertreatment 1 Warm Up Diesel Oxidation
Catalyst Inlet Temperature

4810

#

AFT1 DEF WARM OUT TMP

Caption Indicating Aftertreatment 1 Warm Up Diesel Oxidation
Catalyst Outlet Temperature

5246

#

SCR INDUCMT SEVERITY

Selective Catalytic Reduction Inducement Severity Level

5264

#

EGR2 VALVE 1 CONTROL

Caption Indicating Engine Exhaust Gas Recirculation 2 Valve 1
Control

520837

1

STARTER SPEED LO LO

Starter Speed is below the LOW LOW threshold

520838

1

RUN UP SPEED LO LO

Run Up Speed is below the LOW LOW threshold

522192

12

MTU ENGINE BAD

Component failure of the MTU engine control ECU

523212

#

ENGPRT CAN MSG

Caption String for CAN bus Message

523216

#

PREHTENCMD CAN MSG

Caption String for CAN bus Message

523218

#

RxCCVS CAN MSG

Caption String for CAN bus Message

523222

#

TC01 CAN MSG

Caption String for CAN bus Message

523238

#

SWTOUT CAN MSG

Caption String for CAN bus Message

523239

#

DECV1 CAN MSG

Caption String for CAN bus Message

523240

#

FUNMODCTL CAN MSG

Caption String for CAN bus Message

523350

#

CYL BANK 1 INJECTORS

Caption String for Cylinder Bank 1 Injectors

523351

#

CYL BANK 1 INJECTORS

Caption String for Cylinder Bank 1 Injectors

523352

#

CYL BANK 2 INJECTORS

Caption String for Cylinder Bank 2 Injectors

523353

#

CYL BANK 2 INJECTORS

Caption String for Cylinder Bank 2 Injectors

523354

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

523355

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

523370

#

RAIL PRESSURE

Caption String for Rail Pressure

523420

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

523450

#

MULTI STATE SWITCH 1

Caption String for Multi State Switch 1

523451

#

MULTI STATE SWITCH 2

Caption String for Multi State Switch 2

523452

#

MULTI STATE SWITCH 3

Caption String for Multi S t ate S witch 3

523470

#

RAIL PRESSURE LMT VLV

Caption String for Rail Pressure Limit Valve

523490

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

523500

#

CAN MSG TIMEOUT

Caption String indicating Can Message Timeout has occurred

523550

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

523561

#

INJECTN PERIOD CYL 1

Caption String for Single Cylinder Injection Period

523562

#

INJECTN PERIOD CYL 2

Caption String for Single Cylinder Injection Period

523563

#

INJECTN PERIOD CYL 3

Caption String for Single Cylinder Injection Period

523564

#

INJECTN PERIOD CYL 4

Caption String for Single Cylinder Injection Period

523565

#

INJECTN PERIOD CYL 5

Caption String for Single Cylinder Injection Period

523566

#

INJECTN PERIOD CYL 6

Caption String for Single Cylinder Injection Period

523567

#

INJECTN PERIOD CYL 7

Caption String for Single Cylinder Injection Period

523568

#

INJECTN PERIOD CYL 8

Caption String for Single Cylinder Injection Period

523600

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

523601

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

523602

#

FAN SPEED

Caption String for Engine Fan Speed

523604

#

RXENGTMP CAN MSG

Caption String for CAN bus Message

523605

#

TSC1-AE MSG MISSING

Caption String for CAN bus Message

523606

#

TSC1-AR MSG MISSING

Caption String for CAN bus Message

523607

#

TSC1-DE MSG MISSING

Caption String for CAN bus Message

523608

#

TSC1-DR MSG MISSING

Caption String for CAN bus Message

523609

#

TSC1-PE MSG MISSING

Caption String for CAN bus Message

523610

#

TSC1-VE MSG MISSING

Caption String for CAN bus Message

523611

#

TSC1-VR MSG MISSING

Caption String for CAN bus Message

523612

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

9400200990 Rev X DGC-2020 Functional Description 3-19

SPN

FMI

String Displayed

Description

523613

#

RAIL PRESSURE

Caption String for Rail Pressure

523615

#

METERING UNIT VALVE

Caption String for Metering Unit Valve

523617

#

ECU ERROR

String for Diagnostic Trouble Code Indicating ECU Error

MTU Fault Codes

A DGC-2020 connected to a genset equipped with an MTU engine ECU tracks and displays the active
fault codes issued by the MTU engine ECU. Active MTU fault codes can be viewed through
BESTCOMSPlus® by using the Metering Explorer to expand the MTU tree or through the front panel
display by navigating to METERING, ALARMS-STATUS, MTU FAULT CODES.

Each fault code is displ ayed w ith a fa ult desc ription a nd the f ault nu mber. I f the D GC -2020 d oes no t have
descriptive informati on about a fault number th at was received, the fault des cription will display as “NO
TEXT AVAILABLE”. Fault codes display ed by the DGC-2020 are described in Appendix D, MTU Fault

Codes.

RS-485 (Optional)

DGC-2020 controllers with the optional RS-485 communication port (style number xxxRxxxxx) can be
monitored and contro lled via a polled networ k using the Modbus™ protocol. The RS-485 port su pports a
user-selectable baud rate of 1200, 2400, 4800, or 9600. Odd, even, or no parity is supported. Fixed
communication settings include the number of data bits (8) and stop bits (1). Modbus register v alues for
the DGC-2020 are listed and def ined in Ap pendix B, Modbus™ Communication. RS-48 5 port connec tions
are made at DGC-2020 terminals 14 (485A), 13 (485B), and 12 (485 SHIELD).

Modem (Optional)

When DGC-2020 hardware vers ion 3 is equipped wit h the optional external modem port (style number
xxxxxExxx), it can be connected to an external, user-supplied dial-out modem. When DGC-2020
hardware versions 1 and 2 are equipped with the optional internal dial-out modem (style number
xxxxxMxxx), it can be connected to a stan dar d t ele pho ne l ine through its RJ-11 jac k . The modem enables
the DGC-2020 to dial up to four pager telephone numbers and annunciate conditions selected by the
user. These condit ions include any DGC-2020 alar m or pre-alarm, closure o f any program mable contact
input, and an active coo ldown timer. The modem accommodates p agers that use seven data bits with
even parity or modems using eight data bits with no parity.

Output Contacts

Output contact operation is controlled by the operating mode of the DGC-2020. The state of the
Emergency Stop contac t input also affects o utput contact operation. When the Emergency Sto p contact
input is open (emergenc y stop condition), the PRESTART, START, and RUN outputs open. When the
Emergency Stop input is closed, all output contacts operate normally.

DGC-2020 output contacts include PRESTART, START, RUN, and up to 12 standard programmable
outputs. Additional output contacts can be accommodated with a CEM-2020 (Contact Expansion Module).

PRESTART

This output closes to energize the engine glow plugs. The PRESTART output can be programmed to
close up to 30 seconds prior to engine cranking. The PRESTART output can also be programmed to
open upon engine startup or remain closed as long as the engine is operating.

During the resting state, the PRESTART can be set to Off, On, or Preheat Before Crank. If Preheat
Before Crank is selecte d, the PRESTART output will be c losed for a time equal to the Pr e-crank delay
time prior to re-en tering the crankin g state. If the Pre -crank delay setting is longer than t he rest interval,
the PRESTART output will be closed for the entire rest time.

PRESTART output connections are made through terminals located on the PRESTART relay.

START

This output closes when engine cranking is initiated by the DGC-2020 and opens when the magnetic
pickup (MPU) or gen erator frequency indicates that the engine has started. Prior to engine starting, t he
duration of cranking is determined by the cranking style (cycle or continuous) s elected. Cycle cranking
permits up to 7 crank cycles with crank cycle duratio n of 5 to 15 s econds. The continuo us crank time is
adjustable from 5 to 60 seconds.

3-20 DGC-2020 Functional Description 9400200990 Rev X

START output connections are made through terminals located on the START relay.

RUN

This output closes when engi ne cranking is initiated by the DGC -2020. The RUN output remains closed
until an off command or emergency stop command is received.

RUN output connections are made through terminals located on the RUN relay.

Programmable

DGC-2020 controllers with a style number of xxAxxxxxx hav e four progr amm able output c ontac ts (OUT 1
through 4). Twelve pro grammable outputs (OUT 1 through 12) ar e provided on controllers with a style
number of xxBxxxxxx.

Modes of Operation

OFF

When in the OFF mode, the DGC-2020 will not start under any circumstance. It cannot be started
automatically. Programmable logic functions normally in this mode.

RUN

When in the RUN (manu al) mode, th e DGC-20 20 runs and cannot be shut off automatical ly. The br eaker
can be open or closed thro ugh programmab le logic inputs. Pr ogrammable l ogic functions nor mally in this
mode.

AUTO

When in the AUTO mode, the DGC-2020 may be started automa tically or “self-start” fr om an automatic
starting feature listed in t he followi ng paragrap hs. If the DG C-2020 is not i n AUTO mode, t he self-starting
modes will have no effect. The self-s tarting modes are i ndependent, with one exception, meanin g that if
any self-starting mode indi cates that the unit should run, it will run. It will n ot shut down unless all self­starting modes indicate that the unit should not be running.

ATS Contact Input

The ATS programmable function has an input map ped to it from BESTCOMSPlus®. The unit will start and
run when this cont act is clos ed, and will s top when the contact is open. This mode is independent of the
other self-starting modes.

Generator Exerciser

The unit will start at th e de signat ed tim e and w ill run f or the s pecifi ed dur ation. The bre aker wi ll be cl osed
if “Run with Load” is checked in the generator exercis er settings. This mode is indepe ndent of the other
self-starting modes.

Mains Fail Transfer Functionality

If mains fail transfer is ena bled, the u nit will run w hen the utility is determi ned to be bad, an d will not st op
until the utility has been determined to be good and the load has been transitioned to the utility. This
mode is independent of the other self-starti ng mod es .

Run with Load Logic Element

When the run with load logi c eleme nt s tar t inp ut is ene r gized, th e uni t will s tar t, cl os e its break er, and t ake
on load at the programme d load rate. If the unit is the only one o n the load, it will provide the fu ll load.
When the run with load logi c element stop input is en ergiz ed, the unit w ill u nload at the pro gramm ed lo ad
rate, open its breaker, and stop. This mode works in c onjunction with demand start/stop, otherwise it is
completely independent of the other self-starting modes.

Engine Run Logic Element

When the engine run logic element s tart input is ener gized, the unit wi ll start. When t he engine run logic
element stop input is energ ized, the unit wi ll unload if loade d, open its bre aker if needed, c ool down, and
then stop.

9400200990 Rev X DGC-2020 Functional Description 3-21

Demand Start/Stop Function

If the system demand is above the configured level setting for the specified time, and sequencing is
enabled, the unit will start , close its br eaker, and tak e on load at t he program med load rat e. Note the un it
will not start if sequenc i ng i s not e nab led . If t he uni t is the o nly one on the load, it wil l prov i de t he f ul l l oad .
If the load drops bel ow the stop level for t he specified time, t he unit will unload at the programmed load
rate, open its br eaker, and stop. This mode w orks in conjunction with the run with load logic element,
otherwise it is completely independent of the other self-starting mo des.

Interoperability of the Run with Load Logic Element and the Demand Start/Stop Function

These two functions can be used together; they are not independent of each other. Either one can start or
stop the system, but they can s hare functionality in that one can stop the s ystem even if the other one
started it. Thus, if a machine was started by pulsing the run with load start, it could be stopped by demand
start/stop. This ca n be use ful in a s cenario where i t may be desired t o start a number of gener ators all at
the same time b ut sequence some off if the load does not require them. R un with load start could be
pulsed on all the units causing them to start and close their breakers, then demand start/stop and
sequencing could cycle them on and off as the load requirements change.

In order for Run With Load and S equencing to operate r eliably, it is recommend ed that the inputs to the
Run with Load logic eleme nt be pulsed rather than held const ant. For example, if a unit was starte d by
sequencing, a pulse on the Run with Load Stop will shut down the unit. However, if th e Run with Load
Stop is held constant, sequencing could never start a unit because the sequencing starts would be
immediately negated by Run with Load Stops. Similarly, if a Run with Load Start is applied and held
constant, sequencing can not shut down the uni t. Any stops generat ed by sequencing would immediately
be negated by the Run with Load Start.

Breaker Management

Introduction

The DGC-2020 is capable of controlling the generator breaker and the mains breaker. Once it is
determined that a va lid breaker r equest is availab le, the DGC-2 020 will attempt t o operate the bre aker if
possible. The user can choos e to control only the generator breaker, the generat or and mains breakers,
or none. BESTCOMSPlus® is used to configure breaker management. Refer to Section 4,
BESTCOMSPlus® Software, Breaker Management, for setting information.

Determining Breaker Status

The status of the breakers is determined by using BESTlogicPlus Programmable Logic to setup the
GENBRK and MAINSBRK logic blocks. These logic blocks have outputs that can be configured to
energize an output contact and control a breaker as well as inputs for breaker control and status.

Processing Breaker Requests

Types of breaker operate requests include:

• Local Request - generated by internal functions and based on operating modes.

• Com Request - generated through a communication port using BESTCOMSPlus® or the front

panel HMI.

• Logic Request - generat ed f rom BESTlogicPlus.

The type of response given for a local request depends on the operating mode of the DGC-2020.

RUN Mode

When in RUN mode, the g enerator and mains break ers can be closed manu ally using contact inp uts or
the breaker buttons on the BESTCOMSPlus® Control screen.

OFF or A UTO Mode (Not Running)

If operating in the OF F mo de or AUTO and not r unnin g, t he ge nerat or bre aker c annot be c losed beca use
the generator will not be stable.

AUTO Mode (Running)

When in AUTO mode and running, the mains fail transfer feature will automatically control the mains
breaker an d the generator breaker or t he external AT S (automatic transfer switch) will start the generat or

3-22 DGC-2020 Functional Description 9400200990 Rev X

and control the br eakers itself. In addition, the generator breaker can be aut omatically controlle d by the
demand start/stop function, the exercise timer function, or a RUNWLOAD (run with load) start from
BESTlogicPlus. The generator breaker can be manually controlled using contact inputs and outputs or the
breaker buttons on the BESTCOMSPlus® Control screen.

Breaker Operation

The DGC-2020 will attempt to close a breaker only after verifying that it can be closed. If the breaker
cannot be closed, the close request will be ignored. Only one breaker can be closed at a time.
Synchronization is required before closing the breaker to a live bus. Closure to a dead bus can be
performed after meeting dead bus threshold and timing requirements set by the user.

Determining if it is Acceptable to Close a Breaker

Before the generator breaker can be closed, it must be configured in BESTCOMSPlus®. If only the
generator breaker is c onfigured (mains breaker not c onfigured) the DGC-2020 looks at us er settings to
determine if the gener ator side of the breaker is stable and th e bus side is stable or dead. If both the
generator and the mains breakers are configured and open, the DGC-2020 will close the generator
breaker if the generator side of the breaker is stable. If both breakers are configured and the mains
breaker is closed, the DGC-2020 will close the generator breaker after verifying that both sides of the
generator breaker are stable and the DGC-2020 is synchronizing.

Before the mains break er can be closed, it must be configured in BESTCOMSPlus®. If both th e mains
and the generator breakers are configured and open, the DGC-2 020 will close the mains breaker if the
mains side of the breaker i s stable. If both breakers are configured and the ge nerator breaker is close d,
the DGC-2020 will close the mains breaker after verifying that both sides of the mains breaker are stable.

Changing the Breaker State

Synchronization is required when closing a breaker to a live bus. Bus conditions act as a supervisory
control over the synchronizing function. If synchronization is in process and either bus goes unstable,
synchronization is s uspended. To c lose the breaker on a dead bus , the DGC-2020 gen erates a breaker
close request. The closing function is then run without synchronization.

The GENBRK and MAINSBRK logic blocks contain both Open and Close logic outputs that can be
configured to energize an output contact, which would in turn operate the breaker. The Synchronizer
screen in BESTCOMSPlus® is used to set the output contact type to pulses or continuous.

If the breaker does not seem to operate properly, refer to Section 8, Maintenance and Troubleshooting.

Synchronizer Operation

The synchronizer acts to align the generator voltage and frequenc y with that of the bus inputs when the
DGC-2020 desires to clos e the generator to a live, stable b us. Several situations must exis t before the
synchronizer function will begin to execute:

• The DGC-2020 must include the synchronizer option

• The generator voltage must be stable

• The bus voltage must be stable

• The DGC-2020 must be in the process of initiating a breaker close

Breaker close sources are:

• The DGC-2020 itself when the automatic transfer (ATS) feature is enabled.

• The DGC-2020 itself when the Run with Load logic element receives a Start pulse in the

programmable logic.

• The DGC-2020 itself when started from a Demand Start as part of demand start/stop and

sequencing.

• The DGC-2020 itself when started from the Exercise Timer and the Run with Load box is checked

in the Generator Exerciser Settings.

• Manual Breaker Clos e In pu t C o ntac ts app lied to the Open and C los e i nputs on the left sid e o f t he

Generator Breaker logic element in the pr ogra mma bl e logic.

Any of the above close sources will work when the DGC-2020 is in AUTO mode. Only the Manual
Breaker Close Input Contacts can initiate a breaker closure when the DGC-2020 is in RUN mode.

In wye, delta, grounded de lta, or single-phase AB configur ations, the synchronizer aligns the voltage on
the GEN VA termi na l w ith t hat on the BUS VA termin a l, and the voltage on th e GEN VB terminal with that

9400200990 Rev X DGC-2020 Functional Description 3-23

on the BUS VB terminal. In other wor ds, the DGC-2020 aligns th e generator phase AB L-L voltage with
the bus phase AB L-L voltage. In order for the synchr onizer to provide correc t phase alignment ac ross a
breaker, the phase AB L-L voltages on the ge nerator side of the breaker must be wired to the G EN VA
and GEN VB termin als on t he DGC -2020. The phas e AB L-L voltages on the bus side of the br eaker (the
bus to which the generat or will be connected when t he breaker is clos ed) must be wired to the BU S VA
and BUS VB termina ls on the DGC-2020. See Section 6, Installation, for a three-phas e wye connection
for typical applications diagram.

In single-phase AC configuration, the synchronizer aligns the voltage on the GEN VA terminal with that on
the BUS VA terminal, a nd the v oltage on the GE N VC terminal with tha t on the BUS V B terminal. In other
words, the DGC-2020 a ligns the generator ph ase CA L-L voltage with the bus phase CA L-L volta ge. In
order for the synchronizer to provide correct phase alignment across a breaker, the phase CA L-L
voltages on the generator side of the breaker must be wired to the GEN VA and GEN VC terminals on the
DGC-2020. The phase CA L-L voltage on the bus side of the br eaker ( the bus to which th e generator will
be connected when the br eaker is closed) must be wired to the BUS VA and BUS VB ter minals on the
DGC-2020. See Section 6, Installation, for a single-phase AC connection for typical applications diagram.

Generator speed can be influenced by either the speed trim function, which is active at all times if
enabled, and the synchron izer. Since the spee d trim function can caus e some activity on the speed bias
outputs, when performi ng s ynchr onizer trou blesh ootin g it is reco mme nded tha t the s peed trim f uncti on be
disabled.

One way to tell if the synchronizer is active is to observe the DGC-2020 front panel. When the
synchronizer is active the DGC-2020 displays a synchr onizer scope and angl e and voltage error va lues
on the front panel.

Another method is to check for gover nor an d AVR raise and lower output sign als. F irst, disab le the speed
trim function. If the governor or AVR bias control output type is contact, check for raise and/or lower
pulses coming from the DGC-2020 during synchronization. If the governor or AVR bias control output type
is analog, c heck t he gov er nor and/ or AVR b ias analog o utpu ts o n the load share modu le wit h a vo ltmeter
during synchronizati on. The voltag es or raise/lower pulses shoul d be changing when the sync hronizer is
active. If there are no raise/ lower pu lses, or if the ana log bias v oltages do not chan ge, t he sync hroniz er is
not active.

A readily available method of verifying synchronizer operation during initial set up and commissioning is to
connect a light bulb from p hase B of the mac hine b eing sy nchroniz ed to phase B of the bus. T hree b ulbs,
one on each phase ca n be emp loy ed if so desired. The bu lb(s ) should be off or v ery dim whe n i t is O K for
the breaker to close.

If it is not prac tical to use light bulbs, a vo ltmeter can be connected across the GEN VA and BUS VA
terminals. When the DGC-2020 reports that the slip ang le is near zero, the voltage read by the meter
should be near zero. For single-phase ac sys tems, connect the voltm eter across the GEN V A an d BUS
VA or GEN VC and BUS VB terminals.

If the DGC-2020 is indicating t hat the sl ip angl e is at or near zer o, but the s lip angl e measure d acr oss the
breaker is not near zero, it is likely that the signals measur ed by the DGC-2020 are not the sign als that
are present at the br eaker. In th is cas e, all wiring shou ld be chec ked to ver ify th at the v olta ge at t he G EN
VA terminal of the DGC-2020 matches the voltage present at t he Phase A connection on the generator
side of the breaker, that the voltage at the GEN VB terminal of the DGC-2020 matches the voltage
present at the Phas e B c onnection on the g enerator side of t he break er, and that the voltage at th e GEN
VC terminal of the DGC-2020 matches the Phase C connection on the generator side of the breaker.
Similar verification should be performed fr om the BU S VA and B US VB terminals on th e DG C-2020 to the
Phase A and Phase B connections on the bus side of the breaker.

It is also required t hat phase rotation is th e same on both s ides of the breaker f or synchronization to be
possible.

3-24 DGC-2020 Functional Description 9400200990 Rev X

NOTES

When using the DGC-2020 sy nchronizer, it is recom mended that local DGC­2020 relay outputs be used for breaker closing commands to minimize the
possibility of closures outside of desired breaker closing angles.

If remote (CEM-2020) outputs are to be used for breaker close commands, it is
recommended that the anticipatory synchronizer type be used, and the breaker
close wait time be adjusted to account for possible CEM-2020 output delays
(typically 50 ms) to achieve desired breaker closing angles.

If the synchronizer does not seem to operate properly, refer to Section 8, Maintenance and

Troubleshooting.

Dead Bus Breaker Close Arbitration

Dead bus breaker close arbitration ensures that only one machine (assigned by the system manager)
closes its breaker to a dead bus. The system manager controls generator sequencing. The system
manager is the unit w ith th e lo wes t n umb er ed nonzero sequencing ID . A fter a m ac hin e iss ues a dead bus
close request and the sy stem man ager gra nts it, the machine that rec eived th e gr ant closes its bre aker to
the dead bus. Now that the bus is no longer dead, all remaining units must synchronize to the live bus.

Individual units issue dead bus close requests to the system manager when they want to close their
generator breaker an d a dead bus is detecte d. An individual unit issues a dead bus close r equest when
all of the following are true:

1. The generator is stable

2. A dead bus is detected

3. A generator breaker close request is received

An individual unit w ith its S ystem Type p arameter set to Mu ltiple Gen erator wi ll not clos e its bre aker onto
the dead bus unl ess it r ece ives a dead bus cl ose gran t from t he sy stem manag er via Ether net. T he LS M­2020 provides Ethernet communication between the DGC-2020 and the network. The System Type
parameter is found on t he System Settings screen in BESTCOMSPlus®. Aft er an individual unit issues a
dead bus close request an d r eceiv es a dead bus close grant from t he sy s tem ma nager , th e un it maintains
its dead bus close request unless one of the following occurs:

• The dead bus close grant is removed by the system manager

• The generator breaker encounters a breaker close fail

• A generator breaker open request is received

• The generator becomes unstable

An individual unit can cl ose to a dead bus at any time when the Sy stem Type paramet er is set to Single
Generator or an LSM-2020 is not providing Ethernet communication between the DGC-2020 and the
network.

The Unit ID of the system manager can be found on the front panel of each unit and in BESTCOMSPlus®.
Refer to Section 2, Human-Machine Interface, Display Operation, Generator Network Status Display.

All units in the s ystem reporting a dead bus must be visible to the system manager via Ethernet before
any dead bus close grant is issued. The system manager removes any dead bus close grant if any
machine reports the bus is not dead. A dead bus close grant is not removed by the system manager
unless the unit that r eceive d the gran t removes its req uest or anot her mac hine repor ts that th e bus is n ot
dead.

For consistent operation, all units should be set up with the same demand start/stop and sequencing
criteria. This ensures that system mang er functional ity is transferred ac cordingly as the lowest numbere d
nonzero sequence ID changes in the system.

Event Recording

An event log retains history of system events in nonvol atile mem ory. Fifty event re cords ar e retained and
each record contains a tim e stamp of the first and last event occur rence, and the number of occurrenc es
for each event. In addition , each record conta ins details of the time, date , and engine hours for the most
recent 30 occurrences of the event. The number of occurrences stops incrementing at 99. If an event
occurs which is of a type that differs from those in the 50 records in m emory, the record that has the

9400200990 Rev X DGC-2020 Functional Description 3-25

oldest “last” event occur rence is removed from the log, and the new category takes its place. Sinc e 50

Event

Type

27-1 UNDVOLT TRP P

27-1 Undervoltage Trip

Pre-Alarm

27-2 UNDVOLT TRP A

27-2 Undervoltage Trip

Alarm

27-2 UNDVOLT TRP P

27-2 Undervoltage Trip

Pre-Alarm

32 RVS PWR TRP P

32 Reverse Power Trip

Pre-Alarm

40 EXC LOSS TRP A

40 Loss of Excitation Trip

Alarm

40 EXC LOSS TRP P

40 Loss of Excitation Trip

Pre-Alarm

47 PHS IMBAL TRP P

47 Phase Imbalance Trip

Pre-Alarm

51-1 OVRCURR TRP A

51-1 Overcurrent Trip

Alarm

51-1 OVRCURR TRP P

51-1 Overcurrent Trip

Pre-Alarm

51-2 OVRCURR TRP P

51-2 Overcurrent Trip

Pre-Alarm

51-3 OVRCURR TRP A

51-3 Overcurrent Trip

Alarm

51-3 OVRCURR TRP P

51-3 Overcurrent Trip

Pre-Alarm

59-1 OVRVOLT TRP P

59-1 Overvoltage Trip

Pre-Alarm

59-2 OVRVOLT TRP A

59-2 Overvoltage Trip

Alarm

59-2 OVRVOLT TRP P

59-2 Overvoltage Trip

Pre-Alarm

78 VECTOR SHIFT TRI P P

78 Vector Shift Trip

Pre-Alarm

81 ROC DF/DT TRIP A

81 Rate of Change of Frequency DF/DT Trip

Alarm

81 ROC DF/DT TRIP P

81 Rate of Change of Frequency DF/DT Trip

Pre-Alarm

81O OVRFREQ TRP P

81 Overfrequency Trip

Pre-Alarm

81U UNDFREQ TRP A

81 Underfrequency Trip

Alarm

81U UNDFREQ TRP P

81 Underfrequency Trip

Pre-Alarm

AEM OUTX OUT RNG (X = 1 to 4)

User Configurable Analog Output X Out of Range (X = 1 to 4)

Status

AEM OUTX OUT RNG A (X = 1 to 4)

User Configurable Analog Output X Out of Range (X = 1 to 4)

Alarm

AEM OUTX OUT RNG P (X = 1 to 4)

User Configurable Analog Output X Out of Range (X = 1 to 4)

Pre-Alarm

ALG IN X O1 (X = 1 to 8)

User Configurable Analog Input X Over 1 (X = 1 to 8)

Status

ALG IN X O1 A (X = 1 to 8)

User Configurable Analog Input X Over 1 (X = 1 to 8)

Alarm

ALG IN X O1 P (X = 1 to 8)

User Configurable Analog Input X Over 1 (X = 1 to 8)

Pre-Alarm

ALG IN X O2 A (X = 1 to 8)

User Configurable Analog Input X Over 1 (X = 1 to 8)

Alarm

ALG IN X O2 P (X = 1 to 8)

User Configurable Analog Input X Over 1 (X = 1 to 8)

Pre-Alarm

ALG IN X OOR (X = 1 to 8)

User Configurable Analog Input X Out of Range (X = 1 to 8)

Status

ALG IN X OOR P (X = 1 to 8)

User Configurable Analog Input X Out of Range (X = 1 to 8)

Pre-Alarm

event records with up t o 99 occurrences each are retained in mem ory, a history of nearly 5,000 specific
events are retained in the DGC-2020. Detailed occurrence infor mation is retaine d for the most rec ent 30
occurrences of each event record, an d there are 50 event recor ds; th us the t ime, date, and eng ine hours
details for up to 1,500 specific event occurrences are retained in the event log.

BESTCOMSPlus® can be used to view and download the ev ent log. The event log may also be viewed
through the front pane l HM I by navigat ing to Me tering, Al arms-Sta tus, Event Log. Use t he Up/Dow n keys
to highlight an event and pr ess the Right key to view the summary of that event record. The summary
contains the desc ription of the event, date, t ime, and engine hours of th e first occurrence of the ev ent,
along with date, time, and eng ine hours of the most recent occurrence of the ev ent. To view details of
specific event occ urrences, press the Down k ey until DETAILS is h ighlighted, and then, press the Right
key. The occurrenc e number can be cha nged by pressing the Edit key, Up/Down keys to select #, and
pressing the Edit key again to exit. Table 3-7 lists all possible event strings (as shown in the event log).

Table 3-7. Event List

Event String Event Description

27-1 UNDVOLT TRP A 27-1 Undervoltage Trip Alarm

32 RVS PWR TRP A 32 Reverse Power Trip Alarm

47 PHS IMBAL TRP A 47 Phase Imbalance Trip Alarm

51-2 OVRCURR TRP A 51-2 Overcurrent Trip Alarm

59-1 OVRVOLT TRP A 59-1 Overvoltage Trip Alarm

78 VECTOR SHIFT TRI P A 78 Vector Shift Trip Alarm

81O OVRFREQ TRP A 81 Overfrequency Trip Alarm

AEM COMM FAIL P AEM-2020 Communications Failure Pre-Alarm

AL ECU FAULTY P ECU Faulty Pre-Alarm

ALG IN X O2 (X = 1 to 8) User Conf i gurabl e Analog Input X Over 1 (X = 1 to 8) Status

ALG IN X OOR A (X = 1 to 8) User Configurable Analog Input X Out of Range (X = 1 to 8) Alarm

3-26 DGC-2020 Functional Description 9400200990 Rev X