Sices HS 315, Техническое руководство

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170 Technical Handbook
The following conditions force the opening of the GCB circuit breaker (and avoid its closure),
but only if one closure command for GCB has been configured :
•
If the controller is in OFF mode.
•
If the engine is not running.
•
If the engine is running ad idle speed.
•
If GCB is opened, when the generator voltage is outside the tolerance thresholds.
•
If stop requests are present.
•
GCB closure inhibition by a command through the communication ports. The controller
does not accept this command if it is in OFF or MAN modes. Such command is
temporary (only lasts 30 seconds): so, it must be acknowledged continuously if you
want to keep the GCB open. To send the commands you need to write in sequence
(within 5 seconds):
o
HOLDING REGISTER 101: enter the password configured with the parameter
P.0004.
o
HOLDING REGISTER 102:
▪ “31” or “32” to force the GCB opening.
▪ “33” to remove the “GCB opening” forcing.
•
It is possible to use a digital input configured with the function DIF.2502
– “Inhibition
of supply”. The controller does not take care of the input when in OFF and MAN
modes. When this input is active, the controller commands the opening of the GCB.
•
As default, the controller is configured to not supply the loads if they are not connected
to the plant battery too (because the battery acts as a filter and stabilizes the voltage
produced by the generator). This configuration is achieved by setting the parameter
P.9653
to “0”. In this condition, if the LCB circuit breaker is closed but the BCB circuit
breaker is opened, the controller opens the GCB. This function is not available in OFF
and MAN mode.
•
If the “voltage matching” is enabled, the controller does not allow the closure of GCB
until the generator voltage is aligned with the common bar voltage.
The following conditions always force the opening of the GCB circuit breaker (and avoid its
closure):
•
Alarms (blocks) and deactivations.
•
The trip of the maximum voltage protection for the loads (or the common bar), but only
if the engine is running.
•
The trip of the minimum voltage protection for the loads (or the common bar). This
condition is not checked if the controller is in MAN mode, to allow the charge of a “very
discharged” plant battery.
The following conditions always force the opening of the BCB circuit breaker (and avoid its
closure):
•
The trip of the maximum voltage protection for the plant battery.
•
The trip of the minimum voltage protection for the plant battery. This condition is not
checked if the controller is in
MAN mode, to allow the charge of a “very discharged”
plant battery.