Basler Electric DGC-2020HD Digital Genset Controller

DGC-2020HD. Events are scanned at five millisecond intervals with 1.023 events stored per record. All

changes of state that occur during each scan are time- and date-stamped. Sequences of Events reports

are available through BESTCOMSPlus. Over 1.000 records can be retained in nonvolatile memory. When

the SER memory becomes full, the oldest record is replaced by the latest one acquired.

Data Logging

The data logging function of the DGC-2020HD records up to six records of user-selectable, real-time

parameter data. For more information, see the Reporting and Alarms chapter in the Operation manual.

Contact Inputs and Outputs

DGC-2020HD controllers have 16 programmable contact inputs. All contact inputs recognize dry

contacts. The programmable inputs can be configured to initiate a pre-alarm or alarm condition. A

programmable input can be programmed to receive a contact input from an automatic transfer switch

(ATS). In addition, a programmable Battle Override function allows overriding of DGC-2020HD alarms

and protection functions. Each programmable input can be assigned a user-defined name for easy

identification at the front panel display and in fault records.

Output contacts include three dedicated relays for energizing an engine’s glow plugs, fuel solenoid, and

starter solenoid. An additional twelve programmable output contacts are provided.

Additional contact inputs and output contacts can be accommodated with an optional CEM-2020 Contact

Expansion Module. Contact Basler Electric for ordering information.

Automatic Transfer Switch Control (Mains Failure)

The DGC-2020HD has the ability to detect a mains failure 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 the dead bus threshold

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

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

At this time, the DGC-2020HD starts enough generators to pick up the anticipated load and transfers the

load to the generators when predetermined conditions are met. The DGC-2020HD implements open or

closed breaker transitions to and from the mains. When the mains returns and is considered stable, the

DGC-2020HD transfers the load back to the mains and stops the engines. During closed breaker

transitions, the optional Auto Synchronizer synchronizes the generators to the mains before transferring

the load from generator power to utility power.