Refer to the simplified block diagram, Figure 1, for a system description. The
AC source is rectified and provides energy for the DC + Choppers and a float
charge to a standby Battery. These DC Choppers then supply the power to
operate the DC/AC Inverter.
During a utility power-loss, the AC rectification and battery charging capabilities
of the UPS become inactive. The fully-charged battery, however, supplies the
necessary power requirement to maintain the remaining system blocks.
The FALCON
®
ED on-line topology is unique to other on-line systems, in that, it
is designed to meet the needs of non-linear loads. Your computer, with its
switching power supply, is considered a non-linear load which can be very
abusive to most power protection equipment and could decrease its life-
expectancy. The FALCON
®
ED unit is specially devised to accept these loads
and protect them efficiently without any of the output waveform degradation
common to other UPS.
Referring again to the figure below, you will notice a built-in safeguard. If the
unit inadvertently experiences an extreme over temperature situation that
causes inverter malfunction, it will switch over to a filtered emergency bypass
line to insure continuous power to the computer load. If the unit is overloaded, it
will shutdown completely if the overload is not corrected within 15 seconds.
INPUT
FILTER
RECTIFIER
CHARGER
+ DC
CHOPPERS
DC/AC
INVERTER
OUTPUT
FILTER
COMPUTER
(LOAD)
STANDBY
BATTERY
EMERGENCY
BYPASS LINE
EMERGENCY
BYPASS
SWITCH
FIGURE 1: FALCON ED SERIES BLOCK DIAGRAM
3
