26 User manual GC600-GC600
Mains
contactor is opened and the
Load
stays supplied by the
Mains
. The genset can be stopped by the
“
STOP
” button.
During the synchronisation between
Mains
and
Genset
, if necessary, to regulate manually the
engine speed and/or the voltage, press
ENTER
and the buttons
LEFT
and
RIGHT
to select speed and voltage
regulation; use the
UP
and
DOWN
button to modify the value in percentage (%).
At any time, pressing
EXIT/SHIFT
disables the speed manual controls and allows page
changing.
7.2.1.3
AUTO Mode
It is the normal operating mode.
In this mode the main task of the device is to ensure the electrical power to the
Load
in any situation.
To implement this task, the device continuously monitors the
Mains
for voltage/frequency faults,
phase failure or phase unbalance.
In this mode the
Load
is usually powered by the
Mains
with the
MCB
contactor closed. The supply
of the
Load
is guaranteed all the time the
MCB
remains closed because it is fed by the same
Mains
.
The management of the switch between the
Mains
and
Generator
(
MCB
and
GCB
contactors), the
starting and stopping of the Genset are managed entirely by the operator.
In case of anomaly on the
Mains
, the device automatically:
-
Opens the
MCB
contactor
-
Starts the genset engine
-
With the Genset parameters, carries out the switch of the Load on the Genset by closing the
GCB
contactor
-
Once the correct
Mains
conditions are back, automatically starts the synchronisation and closes
the
MCB
.
-
Once the synchronisation is done, opens the
GCB
. The loads are supplied by the Mains again.
-
After the time for the engine cooling, the genset is stopped. The device stays in stand-by.
INFORMATION! The operating sequence described above is generic and, in some cases, may
not correspond to the one implemented in your system. For further information, please contact your
installer/Manufacturer.
7.2.1.4
TEST
The sole purpose of the “
TEST
” sequence is that of testing the
Generator
set to check the
operating condition in preparation for a possible emergency (e.g. a Black out) and to periodically
keep the mechanical parts efficient and lubricated.
The
TEST
sequence can be scheduled and executed automatically by the Gen-set control module
and periodically with a programming schedule, or manually by means of the operator panel. To
activate the manual sequence, the device must be in the “
AUTO
” mode. Pressing the “
START
”
button in this mode activates the
Generator
set for the “TEST” sequence. The engine stays on
without switching between contactors
MCB
and
GCB
. The operator decides if to stop the “
TEST
”
by pressing the “
START
” button again.
