xLogic SuperRelay User’s Manual
38
time-base and corrected. The resultant maximum timing in accuracy is ± 5
s/day.
3.3.3 Backup of the real-time clock
Because the internal real-time clock of an xLogic is backed up, it continues
operation after a power failure. The ambient temperature influences the backup
time. At an ambient temperature of 25°C, the typical backup time of ELC-18
is 10 hours and ELC-12 is 72 hours. If there is a power outage of an
ELC-18 for more than 10 hours, the internal clock responds, dependent on
the equipment series.
3.3.4 Retentivity
The switching states and counter values of SFs can be set retentive. This means
that current data are retained after a power failure, and that the block resumes
operation at the break point. The timer is not reset, but resumes operation
until the time-to-go has expired, for example, to enable this response, however,
the relevant functions must be set retentive.
To Next Page
Loading...
Need help?
General