Basler Electric DGC-2020HD - Manual (Page 192)

182 9469300990 Rev B
Figure 127. Settings Explorer, Report Configuration, Trending Setup
Alarms
DGC-2020HD units monitor ECU data, generator protection functions, and engine senders. An alarm or
pre-alarm is annunciated when the monitored parameter exceeds its threshold settings.
When an alarm condition exists, the engine is stopped by opening the Fuel output contact. An existing
pre-alarm condition is annunciated only.
When alarms are active, the front panel Overview screen is replaced by the Active Alarms screen. When
only pre-alarms are active, the front panel Overview screen is alternated with the Active Pre-Alarms
screen in one-second intervals. Active alarms and pre-alarms can be viewed through BESTCOMSPlus
®.
The front panel Alarm LED is illuminated when alarms are active. When pre-alarms are active, the Alarm
LED flashes in one-second intervals.
If programmed and enabled, the horn output is closed when alarms are active. When pre-alarms are
active, the horn output toggles in one-second intervals.
Active alarms are also indicated on the optional remote display panel in the form of LEDs and an audible
horn. Red alarm LEDs light when the corresponding alarm setting is exceeded and the horn sounds. If an
active alarm condition is not annunciated by the remote display panel, the Switch Not In Auto LED lights
and the horn sounds.
Each alarm provides a logic output that can be connected to a physical output or other logic input using
BESTlogic™Plus Programmable Logic. Refer to the BESTlogicPlus chapter for information.
Alarm Configuration
BESTCOMSPlus ® Navigation Path: Settings Explorer, Alarm Configuration, Alarms
Front Panel Navigation Path: Settings > Alarm Configuration > Alarms
To configure alarms using BESTCOMSPlus, open the Alarm screen (Figure 128). Settings are listed in
Table 50. The alarm settings are described below.
High Coolant Temp
High coolant temperature alarm settings consist of an enable/disable setting, a threshold setting, and an
arming delay. If enabled, a high coolant temperature alarm is triggered instantaneously when the engine
coolant temperature exceeds the threshold setting. A fixed hysteresis of 2% functions as a high coolant
temperature dropout by preventing rapid switching of the pickup output. The arming delay disables the
high coolant temperature alarm function for a user-adjustable period after engine startup. System units
are configured on the System Settings screen.
Reporting and Alarms DGC-2020HD