Sices GC250, Техническое руководство

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100 GC250 Technical Manual EAAM057608EN
to the back from mains, but during this status the mains fails again). The cycle can be
interrupted also if there is an emergency stop request (a failure or the controller in
OFF_RESET ). In this case, or at the end of time P.0215, we proceed with the emergency stop
cycle.
9.5.3.2.2 Stop with emergency procedure.
The emergency stop procedure consists in stopping the engine without performing the cooling
cycle. Such procedure is also common to the normal stop, after, thus, the cooling cycle.
During the stop phase, the START and PREHEAT commands are removed and it the STOP
command is activated instead.
The FUEL command is removed after the configured time with parameter P.0234
(“Delay
between commands STOP and FUEL”). This delay is useful, when the command is given
through other methods (e.g. via CANBUS) to avoid that the engine in stopping phase causes
a depression in the fuel ducts, which might get the electro-valve stuck at the next opening
command; it is also useful on electronic engines to supply the control unit through the output
FUEL in the way that the control unit itself remains supplied during the stopping. The duration
of this phase is configurable with parameter P.0213
(“duration of stop pulse in excitement”. At
the end, we pass to the
stop waiting phase
If during this phase all the stop requests cease
and there is at least one starting request, we pass to the stop cancellation one and only if
the engine has been diagnosed stopped.
It is not possible to interrupt an automatic stop cycle as situations can be happen where it is
difficult to restart the engine if it was not completely stopped.
During the stop waiting stop waiting phase all engine commands deactivate and therefore
the stop of the engine is waited. The duration of such waiting is configurable with parameter
P.0214
(“Duration of stopping cycle”), from which the configured time with P.0213 is subtracted
(“Duration of stopping command”). At the end of this phase, if the engine has not stopped, the
failure A021 is activated (“A021 – failed stop”) and we pass to the status of
no stop . The whole
phase of stop waiting (and then also the failure A021) can be disabled anyway by setting
zero in parameter P.0214. If the engine stops, it goes back to the stop status. This phase
cannot be interrupted to perform further starting.
The cancel stop phase is only necessary to allow a short delay between the deactivation of
the eventual STOP command and the FUEL activation.
.
This delay is of 0,2 seconds, at the
end of which we go back to the stop status, from where we will proceed immediately with the
starting if there are the conditions (and restarting from zero with the counting of the starting
attempts).
9.5.4 Communication and events
The controller records any change of the engine's status in the events log, if it is enabled with
bit 3 of the P.0441 parameter:

EVT.1040: Engine stopped

EVT.1041: Starting cycle

EVT.1042: Engine running.

EVT.1043: Cooling cycle

EVT.1044: Stopping cycle
The controller records any change of the start/stop requests in the events log, if it is enabled
with bit 6 of the P.0441parameter:

EVT.1050: Manual start-up command

EVT.1051: Manual stop command

EVT.1052: Auto start command

EVT.1053: Auto stop command