4
User Guide DP300E
7OA0001 GB rev.09
Introduction
1.0
Introduction
1.1
General
Congratulations on your choice of UPS (Uninterruptible Power Supply).
This UPS has been designed and produced for reliable and troublefree long-term
use.
For you it means that once installed and commissioned, you can forget it. You only
have to arrange a preventive maintenance as described in section 8 of this manual.
1.2
The display unit
The display unit – placed on the front of the UPS – is the link between user and
UPS.
It consists of a display, an alarm LED, and a keyboard.
The display is used for showing parameters, measured values, and alarm mes-
sages. A background light is activated in case of an alarm or if one of the keys are
pressed. No activity or no alarm for 5 minutes will automatically switch of the
light.
By pressing
and
simultaneously you increase the contrast, and by
pressing
and
simultaneously you decrease the contrast.
The alarm LED is together with an acoustic signal the indicator for unusual
operating situations. The light changes from green to red in case of alarm. The
keyboard is used for programming of operating parameters and for calling read-
outs of parameters / alarm messages.
Note:
The display accuracy is
±
1%,
±
1 digit.
