LEGRAND Whad 0.8 kVA Manuel D'installation page 23

Controls:
The UPS is managed by means of the button on the front panel, illustrated in figure 1 in the dia-
gram on page 11.
1 On / Off Button:
- Press briefly to switch the UPS on: confirmation is given by the momentary lighting up of all
the Status Indicator's and by a short acoustic signal (beep).
- Keep the same button pressed for longer than 2 seconds to switch the UPS off, confirmed by
the intermittent beeping of the buzzer.
Warning:
• In normal operating conditions, the green Status Indicator is lit.
• During operation with battery power, the yellow Status Indicator is lit.
• The UPS indicates it is operating with battery power by emitting a slow acoustic sound (one
beep every 20seconds). Battery reserve, i.e. the opportune moment for the user to shut down
the open procedures on the computer connected to the UPS, is indicated by an alternating,
slow-fast intermittent sound together with the corresponding flashing of the red Status Indica-
tor. The end of battery autonomy is signalled by the flashing of the red Status Indicator and the
continuous sounding of the buzzer for a total length of 15": in this state, the load is no longer
supplied.
• The red ALARM Status Indicator flashes to indicate the presence of an excessive load on the
output.
In this case, if mains is present, the load is supplied through the bypass with mains power, other-
wise the operation of the UPS will be blocked after 15 seconds of continuous overload. If the red
Status Indicator (4) flashes with a rapid intermittence, it signals a fault in the UPS; if the intermit-
tence is alternating short-long, it signals an anomaly in the connection of the UPS (wrong con-
nection of neutral conductor). If the neutral is wrong, invert the plug on the UPS power supply
cable.
• In all cases, when the operation of the UPS is blocked due to any anomaly, it completely and
automatically shuts down after approximately 15 seconds.
Connection
The UPS has a standard RS232 interface and it is possible to use this, in conjunction with a com-
puter, to access a series of data regarding the operation and the history of the UPS. The function
can be used by means of the UPS Communicator interface programme for Windows and Linux(*)
environments, by connecting a serial port on the PC to the interface socket [7] located on the rear
of the UPS using a RS 232 cable.
It is also possible to configure the UPS, enabling or disabling the special functions (Software).
Whad 0.8, 1, 1.5 kVA
23