Battery Voltage Loss Detection - Allen-Bradley Ultra1500 2092-DA1 User Manual

5-18 Ultra1500 Application Examples
Publication 2092-UM001D-EN-P — July 2005
Figure 5.5
Ultra1500 Expected Battery Life
Drive operated for
two shifts a week.
Drive operated for
one shift a week.
In Figure 5.5, three data points are highlighted. For example, if the control
power of the drive is applied for 40 hours per week, (and the encoder uses
battery power the remaining 128 hours in the week), the expected battery life is
about 3.5 years. In applications where machine downtime is a concern,
replacing the battery once a year or once every two years may be a prudent
measure to avoid any interruption.

Battery Voltage Loss Detection

The encoder in the TL-Series motors monitors the battery voltage at all times,
and supplies the Ultra1500 drive with battery status that is in turn relayed to
the user through the status display of the drive.
The upper controller is responsible for managing the
ATTENTION
system behavior in the event of a loss of absolute
position, which may require re-homing of the
!
machinery to avoid incorrect motion.
If the battery voltage is above 3.1 Volts, the encoder will be satisfied with the
battery voltage and no warnings or errors are reported.
Drive operated for
three shifts a week.