Once maintenance has been completed, perform the following operations in order to restart the UPS:
Close the input, output and bypass isolating switches and the battery rack switch/fuse. The signal panel returns
to being active. Command the UPS to switch back on from the
“SYSTEM ON” menu. Wait until the sequence is
complete.
Open the maintenance bypass: the UPS starts to operate normally again.
CAUTION:
The rms output voltage value is set by the precise DSP control independently from the input voltage while the output
frequency is synchronised (within a tolerance range which can be set by the user) with the input frequency in order to
allow the bypass to be used. Outside this tolerance range, the UPS is desynchronised and moves to the rated frequency
and the bypass can no longer be used (free running mode).
R
EDUNDANT AUXILIARY POWER SUPPLY FOR AUTOMATIC BYPASS
The UPS is equipped with a redundant auxiliary power supply which allows operation on the automatic bypass in the
event of a fault with the main auxiliary power supply. In the event of a fault with the UPS which also leads to the
breakage of the main auxiliary power supply, the load nevertheless remains powered through the automatic bypass. The
multiprocessor board and the control panel are not powered therefore the LEDS and the display are off.
E
XTERNAL TEMPERATURE SENSOR
This
NON-ISOLATED
input can be used to measure the temperature inside the battery rack.
The use of the temperature sensor allows the UPS control logic to regulate the load voltage values and keep the battery
working temperature constant.
It is necessary to use the specific kit supplied by the manufacturer only: any uses which do not comply with
the specifications may cause malfunctioning or breakage to the appliance.
For installation, connect the cable contained in the specific kit to the "EXT BATTERY TEMP PROBE" connector (see "Ext
connection view" ).
After installation, it is necessary to enable the external temperature measurement function using the
UPSTools
advanced
configuration software present on the CD-ROM supplied with the UPS.
R
EMOTE PANEL
(
OPTIONAL
)
The remote panel allows the UPS to be monitored from a distance and the user to have a detailed overview of the state
of the machine in real time. Using this device, it is possible to keep the electrical mains, output and battery
measurements etc, under control and to detect any alarms.
For details relative to use and connection, refer to the specific manual.
