If during the start cycle, the engine started condition is not detected after 5
seconds, the ARR output deactivates and the corresponding LED turns off
(
). Subsequently the control unit automatically attempts a new start, repeating
a new cycle without the need to press START (4 cycles by default). After
exhausting the attempts to start the engine without success, the control unit
display shows the alarm (START FAILURE). (5)
To interrupt the start cycle just press the STOP button.
x4
Fig.5
NOTE
The display shows the engine status screen, where the engine status is displayed
during the start up operation. This sequence is:
Genset: Stopped.
Genset: Starting.
Genset: Started.
Genset: Stabilised.
Genset: Charging.
NOTE
Start-up in an automatic system by schedule, or using an external signal, etc. is
carried out following the same process as when starting up manually.
4.2 ENGINE STOP
The engine stopping process in automatic mode is carried out as follows:
DIESEL ENGINE
1. Cooling the motor. Once free of charging, the engine will continue running for
a cooling time (Times table, parameter 11). In certain situations, it is possible to
set the alarms (Alarms table, parameters 3, 6, 9...) of the control unit to perform
a stop without engine cooling.
2. Engine stop. After the engine cooling time has elapsed, the PC output of the
measurements module is enabled or disabled according to the programmed
conguration (Regulations table, parameter 18). As an engine stop condition it is
possible to select:
• Generator voltage (Regulations table, parameter 19). The engine is
considered stopped when the generator voltage is below the start up
threshold (Threshold table, parameter 20).
• Alternator voltage (Regulations table, parameter 20). The engine is
considered stopped when the battery charging alternator voltage is
below the start up threshold (Threshold table, parameter 21).
• Pickup frequency (Regulations table, parameter 21). The engine is
considered stopped when the pickup frequency is below the start
up threshold (Threshold table, parameter 22). To activate the pickup
calculation via the engine ring gear, it is necessary to enter the number
of teeth on the engine's ywheel ring gear (Threshold table, parameter
24); if the number of teeth for the ywheel ring gear is zero, the pickup
frequency is calculated via the generator frequency according to the
ratio 50Hz/1500rpm, 50Hz/3000rpm or 60Hz/1800rpm (Regulations
table, parameter 26).
• Low Oil Pressure Signal (Regulations table, parameter 22). The low oil
pressure condition is used for detecting a stop, by which the engine
is considered stopped when it is detected that the sensor is closed.
Exceptions to this engine stop detection are SCANIA engines and
sensors that have their own power source.
OPERATION | PAGE 14
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