LEGRAND Archimod, Operating And Maintenance Manual

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3. Technical description
Battery box
The battery modules are designed for easy insertion in the cabinet with no work needed to connect them; they are easy
to handle thanks to their light weight, likewise any maintenance or replacing.
A box holds 7 12V, 7.2 Ah or 9 Ah batteries connected in series and, thanks to the Plug & Play connection can be easily
pulled out or put inside the cabinet. In order to guarantee maximum safety, especially during maintenance, the voltage
of each box is adequately disconnected into two 36 and 48V that are connected in series only when the box is placed
right inside its housing.
This conforms to the CEI-EN 60950 standard on electrical safety which establishes that adequate safeguards must be used
and particular attention where there are dangerous voltages higher than 60 Vdc with the possibility of direct contact.
Autonomy can be increased further still by adding other battery ‘boxes’ in multiples of three, exploiting the space inside
the UPS and the space in the additional Archimod® BATTERY cabinet.
Digital display and displaying alarms
The UPS Archimod® is controlled by 1, 2 or 3 microprocessor boards (depending on the versions) and has the same
number of backlit alphanumerical LC-displays with 20 characters on 4 lines.
They are built into the front of the UPS together with their high luminosity operating status indicators which, by means of
a traffic-light code (green-yellow-red), indicates the operating status and any alarm conditions.
Four simple push buttons near the display allow the user to: see operating data, set operating parameters, analyse the
state of each single power module, select the language in which to see the messages, start the Hot-Swap mode and
execute a set of functional tests.
Off-Line mode
The Archimod® UPS features an Off-Line mode for saving energy while still guaranteeing power continuity protection
to the connected load. When working in the Off-Line mode the load is powered directly by the mains via the automatic
bypass circuit inside the power modules.
This means that both the output frequency and voltage are the same as the input mains and the UPS Archimod cannot
control such quantities.
The advantage of the Off-Line mode is a greater electrical yield in that the UPS does not convert energy.
If the output voltage goes outside the tolerance range (±15% of the voltage set in output) or there is a power cut, the UPS
activates its inverter stage, feeding the load with the energy stored in the battery.
When running on battery power, autonomy depends on UPS configuration (nominal power, battery capacity) and on the
load percentage applied. When the input mains returns to within the tolerance parameters the UPS goes automatically
to the Off-Line mode.
The On-Line and Off-Line modes can be switched (and vice versa) whether the UPS is on or off (accessing the Service
Mode).
• To activate the Off-Line mode access the Main menu
➝
UPS settings
➝
Bypass
➝
Off-Line mode and select Enabled,
confirming your choice with the Enter button.
• To activate the On-Line mode access the Main menu
➝
UPS settings
➝
Bypass
➝
Off-Line mode and select Disabled,
confirming your choice with the Enter button.
ATTENTION!
If the load requires powering without any interruption or with a voltage regulated in amplitude and/or frequency,
the Archimod® UPS must be used in the dual conversion On-Line mode.