ENGLISH
User’s manual
8
UPS ERA LCD 0.65 – 0.85 – 1.1 Rack Mount
6
Functioning
6.1
Normal Mode
The UPS typically works in
Normal mode
: Input mains power is available and its amplitude is within specifications.
During Normal mode, the UPS recharges the batteries and keeps them in an optimal charging voltage.
6.2
Battery Mode
The UPS automatically runs in
Battery mode
if the AC Input Line voltage amplitude gets out of security limits (in
case of a black-out or over-voltage/low-voltage): in this case, the UPS supplies the required output power by its
internal battery and by the Inverter block.
The UPS automatically returns in Normal mode a few seconds after the AC Input Line is recovered.
The Battery mode is identified by an acoustic signal every 10 seconds.
6.3
Low Battery and Automatic Restart
In Battery mode, ERA LCD Rack Mount indicates the
Low Battery
condition whenever the battery reaches a charge
level allowing connected devices to operate for approximately one more minute.
The UPS warns operators of
Low
Battery
by emitting an acoustic signal every second.
If AC Input does not come back on within few minutes, the UPS
shuts-down automatically
thus preventing the
batteries from discharging excessively; the UPS stops supplying Output power, deactivates control panel indication
and goes to a waiting state. Once AC Input comes back on, the UPS
restarts automatically
and after some seconds
it goes back to work in Normal mode.
After a complete discharge, the UPS needs 4 hours to recharge completely the batteries. The UPS recharges
batteries automatically if it works in Normal mode or if it is off and connected to the AC Input Line.
6.4
Load Control
The UPS indicates the Output Load level by LCD display (on the right side as described in the chapter 4).
When the Output load is higher than nominal value the UPS warns of
Overload condition
by LCD display, by
emitting a continuous acoustic alarm.
The UPS warns of an Overload less than 110% by acoustic alarm.
An Overload between 110% and 130% is accepted for about 30 seconds and after UPS switches automatically off.
The UPS switches immediately off if the Overload is higher than than 130%.
Once the requested power is back within range, the UPS switches automatically to the Normal mode.
Make sure that the UPS never indicates Overload condition.
Do not connect a load greater than rated value to the UPS (see POWER specifications in
the chapter “Technical Characteristics”), as this may damage the unit. In this case the
warranty is void.
