E-51028230XT/BG - 19

Shutdown of a rectifier/

charger

Except in frequency converters without
a battery, it is recommended not to stop
the rectifier/charger because the
battery will no longer be charged.
Except in the case of a test of the
inverter on battery power, the rectifier/
charger should be shutdown after the
inverter to avoid unnecessary battery
discharge.
Proceed in the following order:
◗ open battery circuit breaker QF1;
◗ open normal AC input switch Q1:
◗ ◗ the rectifier/charger shuts down,
◗ ◗ the green "rectifier/charger" light 1
goes off.
Note:
In a frequency converter without a
battery, rectifier/charger shutdown
automatically results in inverter
shutdown.

Shutdown of the

inverter

◗ press the "inverter OFF" button 9 on
the control panel for three seconds (see
figure 19).

Single-UPS unit

◗ the green "inverter" light 4 on the
control panel goes off;
◗ the green "static-bypass" light 3
goes on;
◗ the inverter stops;
◗ if bypass AC source (Mains 2)
transfer conditions are satisfied, the
inverter shuts down and the load is
transferred to the bypass AC source;
◗ if bypass AC source (Mains 2)
transfer conditions are not satisfied, the
inverter does not shut down. The
message "MAINS 2 OUTSIDE
TOLERANCES, TRANSFER
DISABLED" is displayed.

UPS in "ECO" mode

◗ the green "inverter" light 4 on the
control panel goes off;
◗ if the load was on the static bypass,
nothing is changed;
◗ if the load was on the inverter:
◗ ◗ the green "static-bypass" light 3
goes on,
◗◗ if bypass AC source (Mains 2)
transfer conditions are satisfied, the
inverter shuts down and the load is
transferred to the bypass AC source,
◗ ◗ if bypass AC source (Mains 2)
transfer conditions are not satisfied, the
inverter does not shut down. The
message " MAINS 2 OUTSIDE
TOLERANCES, TRANSFER
DISABLED" is displayed.
Shutdown

Single-converter unit

◗ the green lights 4 and 5 on the
control panel go off;
◗ the inverter stops.

Parallel UPS unit

◗ if the system is redundant, i.e. the
other parallel-connected inverters can
supply the load on their own, the
inverter shuts down and the green
"inverter" light 4 goes off.
The load is not affected in that the other
inverters continue to supply it normally;
◗ if the system is not redundant, the
other inverters go to overload status.
If overload conditions are overrun, the
load is transferred to the bypass AC
source:
◗ ◗ the green lights 3 turn green,
◗ ◗ the green "inverter" light 4 goes off.

Parallel-converter unit

◗ the redundant system means that the
other parallel inverters can supply the
load unassisted. The inverter shuts
down and the green "inverter" light 4
goes off. The load is not affected in that
the other inverters continue to supply it
normally;