Basler Electric DGC-2020HD - Manual (Page 295)

9469300990 Rev B 285
Timekeeping
The DGC-2020HD provides a real-time clock with an internal backup battery. The battery will maintain
timekeeping for approximately five years (depending on conditions) after power is removed from the
controller.
The clock is used by the event recorder and sequence of events functions to time-stamp events and the
exercise timer to start and stop the genset when the exercise feature is utilized.
Clock Setup
BESTCOMSPlus Navigation Path: Settings Explorer, General Settings, Clock Setup
Front Panel Navigation Path: Settings > General Settings > Clock Setup
Clock settings are made through the communication ports using BESTCOMSPlus ® or through the front-
panel interface. Write access to ports is required to program the clock.
The BESTCOMSPlus Clock Setup screen is illustrated in Figure 184. Settings are listed in Table 82.
The local time zone is configured on this screen. The Time Zone Offset is the local offset to UTC
(Coordinated Universal Time). The Time Zone Offset is required if NTP or IRIG-B is used for time
synchronization or when the Start/End Time Reference is set to UTC (Coordinated Universal Time). The
Start/End Time Reference is set to UTC time if required by local daylight savings time rules. The
Start/End Hour/Minute settings determine the time when the DST will go into effect. The Bias setting is
the amount of time that the clock moves forward or backward. The default settings are configured for the
Central Time Zone in the United States as shown in Figure 184. Using these settings, the clock would
move forward 1 hour at 2:00 a.m. on the second Sunday in March and move backward 1 hour at 2:00
a.m. on the first Sunday in November. DST can also be configured for a specific day of the month by
selecting Fixed Dates under DST Configuration.
Time Priority Setup
There are two available protocols (NTP and IRIG-B), which can be assigned priorities to update the date
and time. Double-click on an available item to move it to the Enabled box. Use the arrow buttons to set
the priority of the selected item.
The NTP (Network Time Protocol) synchronizes the real-time clock to a network time server when an
Ethernet cable is connected. The address of the NTP server must be entered when NTP is selected in the
Time Priority Setup, Enabled box.
IRIG Decoding
The IRIG Decoding signal defines whether or not to decode the year field in the IRIG signal. Refer to the
manufacturer of your equipment to determine if the year field is being sent to the DGC-2020HD.
Clock Not Set Warning
When enabled, this alarm annunciates when the DGC-2020HD has powered up and the clock has not
been set.
DGC-2020HD Timekeeping