page 26 / 75 0MNA080A55-GB REV 01
3.4 Start-up procedure
mains power supply
The mains power supply has to be present in order to start up the SENTRY MPS-HP. For start-up from
battery, the option “KIT FOR START-UP FROM BATTERY” (COLD START) has to be installed.
The SENTRY MPS-HP output terminals will be powered in this phase and all applications connected will
receive voltages. All users must therefore be warned before carrying out the start-up procedure.
BATTERY CABINET if present:
The battery cabinet must be
provided with a sectioning device for it to be connected to the UPS.
This disconnector must
be closed only when the UPS is started up regularly. During the UPS start-up
phase the disconnector must
remain in the open position.
Once the INPUT/OUTPUT and battery cables have been connected to the UPS terminals and before putting the
switch cover back in place, check that:
• all the input/output terminals are securely tightened;
• all the fuseholders have the fuse inserted, and are in the closed position;
• the input and output protection conductor is connected correctly (yellow/green earth cable);
• check the polarity of the battery connections.
Replace the switch cover.
For the first start-up, the following operations should be carried out in this order:
1) close input disconnector SWIN,
2) press button 1 twice, select the language and then press button 8 to return to the basic menu,
3) after a few seconds, messages on the status of the UPS will start to be shown on the first line of
the display panel; these will include the following message relating to the battery disconnector:
Wait: DO NOT connect the BATTERY
4) close by-pass line disconnector SWBY,
5) close output disconnector SWOUT.
6) do not close the battery cabinet disconnector
Once these operations have been carried out, the humming of the fans and the sound of the buzzer will be
heard.
Close the battery cabinet disconnector or fuses only when the following message is no longer
shown on the first line of the display panel:
Wait: DO NOT connect the BATTERY
Configure the value of the battery capacity according to the instructions on page 59.
After the start-up operations have been completed, perform a manual battery test:
press button 3 and then 2 on the control panel. At the end of the test, after approx. 8 seconds, with the UPS
started correctly and with the battery connected on the signals and control panel, the two green input and
output LEDs must be on constant.
SWMB
The disconnector SWMB must not be closed during normal operation of the SENTRY MPS-HP.
SWMB should only be closed during UPS maintenance operations in order to keep the load
powered (see the instructions on page 30).
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