Basler Electric DGC-2020HD - Manual (Page 85)

9469300990 Rev B 75
Operating Modes
Three operating modes provide the versatility to meet the application’s needs. The DGC-2020HD
operates in Off, Run, or Auto mode. These operating modes are described in the following paragraphs.
Off
In OFF mode, the DGC-2020HD will not start under any circumstance. It cannot be started automatically.
Programmable logic functions normally in this mode.
Run
In RUN (manual) mode, the DGC-2020HD runs and cannot be shut off automatically. The breaker can be
opened or closed through programmable logic inputs. Programmable logic functions normally in this
mode.
Auto
In AUTO mode, the DGC-2020HD may be started automatically or “self-start” from an automatic starting
feature described in the following paragraphs. If the DGC-2020HD is not in AUTO mode, the self-starting
modes will have no effect. The self-starting modes are independent, meaning that if any self-starting
mode indicates that the unit should run, it will run. It will not shut down unless all self-starting modes
indicate that the unit should not be running.
ATS Contact Input
The ATS (automatic transfer switch) programmable function has an input mapped to it through
BESTCOMSPlus
® . The unit will start and run when this contact is closed, and will stop when the contact is
open.
Generator Exerciser
The unit starts at the designated time and runs for the specified duration. The breaker will be closed if
“Run with Load” is checked in the generator exerciser settings.
Mains Fail Transfer Functionality
If mains fail transfer is enabled, the unit runs when any phase of the utility is dead or unstable, and will not
stop until all phases of the utility are stable and the load has been transitioned to the utility.
Run-with-Load Logic Element
When the run-with-load logic element start input is energized, the unit starts and closes its breaker. When
the run-with-load logic element stop input is energized, the unit opens its breaker and stops.
Engine Run Logic Element
When the engine run logic element start input is energized, the unit starts. When the engine run logic
element stop input is energized, the unit opens its breaker if needed, cools down, and then stops.
Operating Mode Control
Controls for selecting an operating mode are located on the front panel and within BESTCOMSPlus ® .
Refer to the Controls and Indicators chapter for more information.
DGC-2020HD Operating Modes