19
6. OPERATION.
6.1. UPS STARTUP AND SHUTDOWN.
6.1.1. Preliminary checks.
•
Make sure that all of the connections have been made correctly,
following the instructions on the labelling of the device and in
Chapter 5.
•
Check that the power supply voltage is correct.
•
Check that the UPS is ‘
OFF
.’
•
Make sure that all of the loads are ‘Off.’
•
It is very important to proceed in the established order.
•
For views of the UPS, see Fig. 1 to 4.
•
Set the protection of the distribution board to ‘ON.’
The operation of the device described in this document is
based on the original factory settings and configuration. Fig.
11 shows the screens tree, the variables and the original configura-
tion. Take into consideration that any modification of them can lead
to changes in the behaviour of the device.
6.1.2. UPS startup with mains voltage.
•
When applying input voltage to the UPS, the output
sockets supply power through the static bypass without
the device running.
•
To start the UPS, press the ‘
ON
’ button on the front panel for
more than 1 second, the inverter will start up while the status of
the UPS will be displayed on the LCD on the front panel.
•
Start the load or loads.
6.1.3. UPS startup without mains voltage (battery mode)
•
To start the device without mains voltage
(cold start)
, press the
‘
ON
’ button on the front panel for more than 1 second. The in-
verter will start up while the status of the UPS will be displayed
on the front panel LCD display.
The UPS’s operating time will depend on the level of battery
charge and the consumption of the loads connected to the
output.
•
Start the load or loads.
6.1.4. Turn off the UPS with mains voltage (in inverter mode).
•
Stop the UPS’s inverter by pressing the ‘
OFF
’ button on the front
panel for more than 1 second.
•
Even if the inverter is ‘
OFF
,’ the device will supply output
voltage through its static bypass.
•
To carry out a complete shutdown, it is necessary to set the dis-
tribution board protection to ‘OFF’.
6.1.5. Turn off the UPS without mains voltage (in battery
mode).
•
Stop the UPS’s inverter by pressing the ‘
OFF
’ button for more
than 1 second. The UPS will shut down.
•
With no mains power present, no output voltage will be
available; however, take into consideration that, when it
is restored, the device will immediately supply output voltage
through its static bypass.
•
To carry out a complete shutdown, it is necessary to set the dis-
tribution board protection to ‘OFF.’
6.1.6. Battery test function.
•
To carry out a battery test with the device running and power
supply present, press the ‘
ON
’ button on the front panel for
more than 1 second, and the automatic test will start.
•
This test detects if the batteries are low, open or not connected.
6.1.7. Alarm mute.
•
The audible alarm is activated when the device operates in bat-
tery mode. If it is a nuisance, it can be muted by pressing the
‘
ON
’/‘
MUTE
’ button for more than 1 second.
The alarm will activate automatically if the battery is low (end of
backup). When this happens, the loads must be deactivated and
the UPS stopped, since the device will shortly stop supplying
output voltage.
6.1.8. EPO (emergency power off).
•
It is also known as RPO (Remote Power Off).
Check that the connector in Fig. A is inserted before pro-
ceeding with the startup.
When the device output is activated, it does not supply voltage
and code ‘EP’ is displayed on the LCD screen.
It is a special situation in which the UPS output voltage is cut
immediately, as a preventative safety or emergency measure.
The EPO condition leaves the loads without power supply, but
not for the UPS. To do this, it will be necessary to first release
the EPO condition and then stop the device using the ‘
OFF
’
button, see Tab. 6. To start the UPS, press the ‘
ON
’ button, see
Tab. 6.
SLC TWIN PRO2
UNINTERRUPTIBLE POWER SUPPLY (UPS)
USER MANUAL
