SECTION 1
GENERAL INFORMATION
DESCRIPTION
The DGC-500 Digital Genset Controller provides integrated engine-generator set control, protection, and
metering in a single package. Microprocessor based technology allows for exact measurement, setpoint
adjustment, and timing functions. Front panel controls and indicators enable quick and simple DGC-500
operation. Basler Electric communication software (BESTCOMS-DGC500-32) allows units to be easily
customized for each application. Because of the low sensing burden in the DGC-500, neither dedicated
potential transformers (PTs) nor current transformers (CTs) are required. A wide temperature-range liquid
crystal display (LCD) with backlighting can be viewed under a wide range of ambient light and
temperature conditions.
An event log retains a history of system events in nonvolatile memory. Up to 30 event types are retained
and each record contains a time stamp and the number of occurrences for each event.
Optional, multifunction generator protection guards against generator overvoltage, undervoltage, under-
frequency, overfrequency, overcurrent, and phase imbalance. Each generator protection function has an
adjustable pickup and time delay setting. Sixteen inverse time curves enable the DGC-500 to offer
overcurrent protection in a variety of applications.
An optional, SAE J1939 interface provides high-speed communication between the DGC-500 and the
engine control unit (ECU) on an electronically controlled engine. This interface provides access to oil
pressure, coolant temperature, and engine speed data by reading these parameters directly from the
ECU. When available, engine diagnostic data can also be accessed.
FEATURES
DGC-500 Digital Genset Controllers have the following features.
• Resistant to high moisture, salt fog, humidity, dust, dirt, and chemical contaminants
• Resistant to the entrance of insects and rodents
• Suitable for mounting in any top mount enclosure
• Suitable for controlling isolated generating systems or paralleled generating systems
• Serial link communications and BESTCOMS software eases access to setup parameters
• Compliant with National Fire Prevention Association (NFPA) Standard 110
• Optional SAE J1939 interface provides high-speed communication with the ECU on electronically
controlled engines
FUNCTIONS
DGC-500 Digital Genset Controllers perform the following functions.
• Engine cranking control
• Generator voltage metering
• Generator frequency metering
• Generator current metering
• Engine coolant temperature metering
• Engine coolant temperature protection
• Engine oil pressure metering
• Engine oil pressure protection
• Fuel level sensing
• Fuel level sender protection
• Fuel leak detector
• Engine cool down
• VA metering
• Engine rpm metering
• Engine run time metering
• Battery voltage metering
• Battery condition monitoring
• Engine maintenance monitoring
• Engine diagnostic reporting
• Event log stores a history of up to 30 system
event types
• Multifunction generator protection (optional)
OUTPUTS
Five isolated, form A output contacts are provided: Engine Crank, Fuel Solenoid, Pre-Start, and two user-
programmable outputs.
OPTIONAL EQUIPMENT
An optional Remote Annunciation Display Panel (RDP-110) is available for use with the DGC-500.
9355400990 Rev H DGC-500 General Information 1-1
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