16 - E-51028230XT/BG

Keys 10 and 11

These keys are used to select
commands in the main menu and
access the secondary messages.

Key 12

This key is used to validate the user’s
choice.

Key 13

This key is used to access the main
menu: display language, display-
contrast setting, sound level of the
buzzer, lamp test, date and time
settings, inverse-video and event log.

"V" key 14

This key is used to access voltage
measurements:
normal AC source phase-to-phase
voltages;
bypass AC source phase-to-phase
and phase-to-neutral voltages;
load phase-to-phase and phase-to-
neutral voltages.

"A" key 15

This key is used to access current
measurements:
normal AC source, bypass AC source
and load currents;
percent load;
load crest factor.

"W.Hz" key 16

This key is used to access other
measurements:
normal AC source, bypass AC source
and inverter frequencies;
level of active and apparent power
drawn by the load;
load power factor;
inverter load level (percent).

"Anomaly" indicator light 17

This indicator light indicates the
presence of anomalies.
Control panel (cont.)

key 18

This key is used to access the primary
messages.

"Battery" key 19

This key is used to access battery
measurements:
battery voltage (or the DC voltage on
frequency converters without a battery);
battery current (charge or discharge);
battery temperature;
available battery backup time;
inverter load level (percent).

"Forced-transfer" key 20

This key is used to voluntarily transfer
the load to the inverter or from the
inverter to the static bypass (return
transfer). Transfer and return transfer
are carried out only following
confirmation requested by the system
display and a warning as to the risk of
an interruption in the supply of power to
the load.

"Alarm reset" key 21

This key is used to reset stored alarms.
The system accepts resetting only
when alarms have been cleared.

"Buzzer reset" key 22

This key is used to stop the buzzer.
However, new alarms set the buzzer off
again.

Display 23

The display continuously indicates the
system operating status.