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User’s Manual
If the voltage on at least one of the phases is under the “UNDERVOLTAGE” threshold, the
generator is considered “alive out of window”. Of course, the P13 parameter must be set in
order to be over the “alive” mains threshold and over the parameter P14.
If the generator’s frequency is over the “OVERFREQUENCY” threshold, the generator is
considered “alive out of window”.
If the generator is alive but its f
requency is under the “UNDERFREQUENCY” threshold, the
generator is considered “alive out of window”. Of course, the parameter P11 must be under
the parameter P12.
4 status are defined in the generator management:
Absent:
“dead” or “alive out of window” from a period of time over or
equal to T1
Restoring:
“alive in window” from a period of time under T2
Present:
“alive in window” from a period of time over or equal to T2
Outgoing:
“dead” or “alive out of window” from a period of time under T1
T1 is a fix time of 2 seconds
3
.
T2 is a fix time of 0.5 seconds.
The engine is defined as “running” if
at least one
of the following requirements is met:
Generator’s frequency over the threshold specified through the parameter P42 (only if
enabled with bit 6 of the parameter P49)
Voltage on all the generator’s phases less than 80 V (not configurable). Starting from
version 08.00.23, is used the value of P03 (the default value is changed to 80V).
Voltage at the D+WL input (terminals 39..40) over the threshold (10 or 20 V according to
the nominal voltage of the battery), only if enabled with bit 4 of the parameter P39.
The engine is defined as “dead” if all
the following requirements are met for at least five
seconds:
Generator’s frequency under the threshold specified by the parameter P43 (only if
enabled with bit 6 of the parameter P49)
Voltage on at least one generator’s phases less than 80 V (not configurable). Starting
from version 08.00.23, is used the value of P03 (the default value is changed to 80V).
Voltage at the D+WL input (terminals 39..40) under the threshold (3 or 6 V according to
the nominal voltage of the battery), only if enabled with bit 4 of the parameter P39.
3
On the DST4600A board this time act only if the generator set contactor is open. If it is closed, wait until the alarms
management starts the F01.F04 alarm and then execute the emergency stop cycle.
