Document Outline

• Cover
• Introduction
• Revision History
• Contents
• Section 1, General Information
  • DESCRIPTION
  • FEATURES
  • FUNCTIONS
    • Generator Protection and Metering
    • Engine Protection and Metering
    • Event Recording
    • Auto-Synchronizer
    • Contact Inputs and Output Contacts
    • Automatic Transfer Switch Control (Mains Failure)
    • Communication
      • USB Port
      • CANBus Interface
      • Dial-Out Modem
      • RS-485 Port
  • STYLE NUMBER
  • SPECIFICATIONS
    • Operating Power
    • Power Consumption
    • Battery Ride Through
    • Current Sensing
      • 1 Aac Current Sensing
      • 5 Aac Current Sensing
    • Voltage Sensing
    • Contact Sensing
      • Terminals
    • Engine System Inputs
      • Fuel Level Sensing
      • Coolant Temperature Sensing
      • Oil Pressure Sensing
      • Engine Speed Sensing
    • Output Contacts
      • Fuel Solenoid, Engine Crank, and Pre-Start Relays
      • Programmable Relays (12)
    • Metering
      • Generator Voltage (rms)
      • Generator Current (rms)
      • Generator Frequency
      • Apparent Power
      • Power Factor
      • Real Power
      • Oil Pressure
      • Coolant Temperature
      • Battery Voltage
      • Engine RPM
      • Engine Run Time
      • Maintenance Timer
      • Fuel Level
    • Generator Protection Functions
      • Overvoltage (59) and Undervoltage (27)
      • Underfrequency (81U) and Overfrequency (81O)
      • Overcurrent (51) (Optional)
      • Phase Imbalance (47) (Optional)
    • Logic Timers
    • Communication Interface
      • USB
      • RS-485 (Optional)
      • CANBus
      • Modem (Optional)
    • Real-Time Clock
      • Clock Holdup
    • Type Tests
      • Shock
      • Vibration
      • Radio Interference
      • HALT (Highly Accelerated Life Testing)
      • Ignition System
    • Environment
    • Agency Approvals
      • UL/CSA Approvals
      • NFPA Compliance
    • CE Compliance
    • Physical
• Section 2, Human-Machine Interface
  • INTRODUCTION
  • FRONT PANEL
  • DISPLAY OPERATION
    • Login and Permissions
      • Login
      • Permissions
    • Summary Screen and Configurable Metering
    • Sleep Mode
    • Changing a Setting
    • Front Panel Display Structure
  • REAR PANEL
• Section 3, Functional Description
  • INTRODUCTION
  • DGC-2020 FUNCTION BLOCKS
    • Power Supply
      • Battery Voltage Sensing
    • Microprocessor
      • Zero Crossing Detection
      • Analog-to-Digital Converter
    • Generator Voltage Sensing Inputs
    • Bus Voltage Sensing Inputs
    • Current Sensing Inputs
    • Analog Engine Sender Inputs
      • Oil Pressure
      • Coolant Temperature
      • Fuel Level
    • Speed Signal Inputs
      • Generator Voltage Sensing Input
      • Magnetic Pickup Input (MPU)
    • Contact Inputs
      • Emergency Stop Input
      • Programmable Inputs
    • Front Panel HMI
      • LCD
      • LED Indicators
      • Pushbuttons
    • Remote Display Panel (Optional)
    • Communication Ports
      • USB
      • CANBus
      • Diagnostic Trouble Codes (DTCs)
      • MTU MDEC ECU Fault Codes
      • RS-485 (Optional)
      • Modem (Optional)
    • Output Contacts
      • Pre-Start
      • Crank
      • Fuel
      • Programmable
  • BREAKER MANAGEMENT
    • Introduction
    • Determining Breaker Status
    • Processing Breaker Requests
    • Breaker Operation
      • Determining if it is Acceptable to Close a Breaker
      • Changing the Breaker State
• Section 4, BESTCOMSPlus Software
  • INTRODUCTION
  • INSTALLATION
    • Installing BESTCOMSPlus
  • STARTUP AND ACTIVATION
    • Starting BESTCOMSPlus
    • Activating the DGC-2020 Plug-In
      • Requesting an Activation Key
      • Entering an Activation Key
  • COMMUNICATION
    • Connecting the DGC-2020 and PC
    • Configuring Communication
    • Installing the USB Driver if Automatic Installation Fails
    • Establishing Communication
  • MENU BARS
    • Upper Menu Bar (BESTCOMSPlus Shell)
      • File
      • Communication
      • Tools
      • Window
      • Help
    • Lower Menu Bar (DGC-2020 Plug-In)
      • View
      • Open File
      • Connect/Disconnect
      • Preview Metering
      • Options
      • Send Settings
  • SETTINGS EXPLORER
  • DGC-2020 AND SYSTEM PARAMETERS
  • GENERAL SETTINGS
    • Front Panel HMI
    • Style Number
    • Device Information
    • Device Security Setup
      • Changing Passwords
  • COMMUNICATIONS
    • CANBus
      • ECU Limitations
      • The DGC-2020 Solution
    • Modem Setup (Optional)
      • Dial-Out
      • Dial-In
    • RS-485 (Optional)
  • SYSTEM PARAMETERS
    • System Settings
      • Genset Electrical Parameters
      • Engine Speed Measurement
      • Engine Cooldown
      • EPS Threshold
      • Measurement/Metering Units
      • Battery Voltage
      • NFPA Compliance Level
      • Horn
      • Single-Phase Override
      • Fuel Level Function
    • Crank Settings
    • Sensing Transformers
      • Generator PT Settings
      • Generator CT Setting
      • Bus Transformer Settings
  • PROGRAMMABLE INPUTS
    • Configurable Inputs
    • Programmable Functions
  • PROGRAMMABLE OUTPUTS
    • Configurable Outputs
  • ALARM CONFIGURATION
    • Pre-Alarms
      • High Fuel Level
      • Low Battery Voltage
      • Weak Battery Voltage
      • Battery Overvoltage
      • Maintenance Interval
      • Engine KW Overload
      • Low Fuel Level
      • High Coolant Temp
      • Low Coolant Temp
      • Low Coolant Level
      • Low Oil Pressure
      • ECU Com’s Fail
      • Active DTC
    • Alarms
      • High Coolant Temperature
      • Low Oil Pressure
      • Overspeed
      • Low Fuel Level
      • Low Coolant Level
    • Sender Fail
  • GENERATOR PROTECTION
    • Voltage Protection
      • Undervoltage (27)
      • Overvoltage (59)
      • Phase Imbalance (47)
    • Frequency Protection
      • Underfrequency
      • Overfrequency
    • Overcurrent Protection
  • BREAKER MANAGEMENT
    • Breaker Hardware
    • Bus Condition Detection
    • Automatic Synchronizer (Optional)
      • Correction Signals
      • Frequency Correction
      • Voltage Correction
      • Synchronization Failure
  • PROGRAMMABLE SENDERS
    • BESTlogic+ PROGRAMMABLE LOGIC
    • Logic Timers
  • FILE MANAGEMENT
    • Settings Files
      • Opening a Settings File
      • Uploading a Settings File
      • Downloading a Settings File
      • Saving a Settings File
      • Printing a Settings File
      • Comparing Settings Files
    • Uploading Firmware Files
      • Uploading a Firmware File to Device
    • Uploading Language Modules
      • Uploading a Language Module to Device
  • METERING EXPLORER
    • Engine
    • Generator
    • Power
    • Run Statistics
    • Status
    • Inputs
    • Outputs
    • Alarms
    • Event Log
    • J1939 ECU
      • ECU Data
      • Engine Configuration
      • Active DTC and Previously Active DTC
    • MTU MDEC
      • MDEC Alarms
      • MDEC Fault Codes
    • Summary
    • Control
    • Real Time Clock
  • UPDATING BESTCOMSPlus SOFTWARE
• Section 5, BESTlogic+ Programmable Logic
  • INTRODUCTION
  • OVERVIEW OF BESTlogic+
    • BESTlogic+ Composition
      • I/O
      • Components
      • Elements
  • LOGIC SCHEMES
    • The Active Logic Scheme
    • Copying and Renaming Preprogrammed Logic Schemes
    • Sending and Retrieving Logic Schemes
      • Retrieving a Logic Scheme from the DGC-2020
      • Sending a Logic Scheme to the DGC-2020
  • PROGRAMMING BESTlogic+
    • I/O
      • Input Objects
      • Output Objects
      • Alarms
      • Pre-Alarms
      • Senders
    • Components
      • Logic Gates
      • Latches
      • Pickup and Dropout Timers
      • Logic Comment Block
    • Elements
      • Protective Elements
      • Control Elements
      • Other
  • BESTlogic+ FILE MANAGEMENT
    • Saving a BESTlogic+ Programmable Logic File
      • Opening a BESTlogic+ File
      • Uploading a BESTlogic+ File
      • Downloading a BESTlogic+ File
      • Printing a BESTlogic+ File
      • Clearing the On-Screen Logic Diagram
  • BESTlogic+ EXAMPLES
    • Example 1 - AVR Logic Block Connections
    • Example 2 - AND Gate Connections
    • Example 3 - Multiple Logic Connections
• Section 6, Installation
  • GENERAL
  • PRODUCT REGISTRATION
  • HARDWARE
  • MOUNTING
  • CONNECTIONS
    • Terminations
      • Operating Power
      • Generator Current Sensing
      • Generator Voltage Sensing
      • Bus Voltage Sensing
      • Analog Engine Sender Inputs
      • Magnetic Pickup Input
      • Contact Sensing Inputs
      • Output Contacts
      • USB Interface
      • RS-485 Communication Port
      • CAN Interface
      • Dial-Out Modem
      • RDP-110 Connections
    • Connections for Typical Applications
      • 3-Phase Wye Connections for Typical Applications
      • 3-Phase Delta Connections for Typical Applications
      • Single-Phase A-B Connections for Typical Applications
      • Single-Phase A-C Connections for Typical Applications
    • Connections for Volvo Penta EDC III Applications
      • 3-Phase Wye Connections for Volvo Penta EDC III Applications
      • 3-Phase Delta Connections for Volvo Penta EDC III Applications
      • Single-Phase A-B Connections for Volvo Penta EDC III Applications
      • Single-Phase A-C Connections for Volvo Penta EDC III Applications
  • INSTALLATION FOR CE SYSTEMS
  • INSTALLATION IN A SALT FOG ENVIRONMENT
• Section 7, Maintenance and Troubleshooting
  • MAINTENANCE
    • Backup Battery for the Real Time Clock
  • TROUBLESHOOTING
    • Incorrect Display of Battery Voltage, Coolant Temperature, Oil Pressure, or Fuel Level
    • Incorrect Display of Generator Voltage
    • Incorrect Measurement or Display of Generator Current
    • Incorrect Display of Engine RPM
    • Programmable Inputs Do Not Operate as Expected
    • Programmable Outputs Do Not Operate as Expected
    • Communication Port Does Not Operate Properly
• Appendix A, Time Overcurrent Characteristic Curves
  • INTRODUCTION
  • CURVE SPECIFICATIONS
  • TIME OVERCURRENT CHARACTERISTIC CURVE GRAPHS
• Appendix B, Modbus Communication
  • INTRODUCTION
    • General Overview
    • Intended Use of the Communications Protocol
  • DETAILED DESCRIPTION OF DGC-2020 MODBUS PROTOCOL
    • Modbus Protocol Overview
      • Device Address Field
      • Function Code Field
      • Data Block Field
      • Error Check Field
    • Serial Transmission Details
    • Message Framing / Timing Considerations
    • Error Handling and Exception Responses
  • DETAILED DGC-2020 MESSAGE DEFINITION
    • Device Address
    • Function Code and Data Block
      • Read Holding Registers
      • Return Query Data
      • Preset Multiple Registers, Non Broadcast & Broadcast
      • Preset Single Register, Non Broadcast & Broadcast
  • DATA FORMATS
    • Short Integer Data Format (INT8)
    • Integer Data Format (INT16)
    • Long Integer Data Format (INT32)
    • Floating Point Data Format
    • Double Precision Data Format (DP)
    • Triple Precision Data Format (TP)
    • Error Check
    • Interdependence of Preset Multiple Register Data
  • MAPPING DGC 2020 PARAMETERS INTO MODICON ADDRESS SPACE
    • Table Conventions
    • Legacy Parameter Table
    • Current Parameter Table