G-Tec LibraPro, User Manual

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Pag. 30 / 57 0MNLIBRAPROK10NPENUA 01
3.7 Personalizations
Using the CONTROLS PANEL (from the basic menu press keys 3 and 5 and the access code 436215), the following
factory-set electrical parameters can be modified within a certain field:
- Language,
- value of the RATED VOLTAGE OUTPUT ,
- BATTERY parameters,
- end of battery discharge pre-alarm,
- shutdown due to power lower than a set value (AUTO-OFF in power),
- daily programmed shutdown (AUTO OFF time),
- acceptance frequency and voltage field on the BY-PASS line,
- by-pass frequency field,
- modem configuration,
- RS232-1 and RS232-2 ports,
- standby-on operation (see page 28 ),
- Smart active operation (see page 28 ),
- date and time.
3.8 Procedure to transfer the load from UPS onto maintenance by-pass.
Procedure not applicable in the frequency converter
With several LIBRAPRO s connected in parallel, follow the procedure described in the section on “bypass
for maintenance” of chapter “Parallel version”.
The sequences of operations to be carried out to place the UPS in maintenance bypass are shown below. The
procedure varies depending on the initial state of the UPS.
- LIBRAPRO in NORMAL OPERATION
procedure a) the power supply to the load is not interrupted in any way ;
- LIBRAPRO with output not synchronized with the by-pass line
procedure b) the power supply to the load is interrupted
(therefore this operation should be effected only if absolutely necessary).
Procedure a)
the by-pass line is present and its frequency and voltage are suitable the UPS display panel
indicates NORMAL OPERATION.
1) close disconnecting switch SWMB (the control logic automatically disables the inverter)
2) open all the switches on the device (SWIN, SWOUT, SWBY and the battery cabinet
disconnectors/fuses) and keep only disconnecting switch SWMB (maintenance by-pass line)
closed. The control panel remains off.
N.B.: After carrying out the operations indicated above, personnel must wait around ten minutes for the
capacitors to discharge before working on the inside of the UPS.
In this situation (during maintenance operations), any disturbance (such as a blackout) on the UPS supply
line would have an effect on the equipment powered (since the batteries are deactivated in this state).