Sices HS 315, Техническое руководство

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152 Technical Handbook
o
If the lubricant low-pressure threshold is not configured, but minimum
pressure threshold is configured (P.0341 <> 0), when the measured pressure
is higher than the threshold.
•
If the board does not acquire the measurement of lubricant pressure, or if both P.0339
and P.0341 thresholds are set to zero:
o
If the digital input is configured to acquire "oil low pressure" (DIF.4222), when
this input is not active.
o
If no digital input is configured to acquire "oil low pressure", but the digital
input to acquire the "oil low pressure" (DIF.4221) is configured, when this input
is not active.
When the pre-lubrication cycle is ended, the starting sequence goes on (with the starter
motor): The pre-lubrication controls remains anyway active until the engine starts or until the
starting sequence is interrupted. In case of repeated attempts to start, the pre-lubrication
control persists: the time configured with P.0242 is counted, but only during the first attempt.
This control is intended for the old diesel engines, for which it was necessary to heat glow
plugs before starting the engine. It can still be used to insert a delay between the opening of
the fuel solenoid valve and the starter motor control: sometimes, as a matter of fact, if the two
controls are activated together, the vacuum in the fuel ducts caused by the starter motor does
not allow the correct opening of the valve (it gets stuck).
To enable this function, it is necessary to set P.0209 parameter ("Pre-heating cycle maximum
duration") to a value other than zero.
The controller activates the glow plugs pre-heating command at the beginning of the starting
cycle, along with the opening of the fuel solenoid valve. The output remains active throughout
the glow plugs pre-heating cycle: it ends after P.0209 seconds.
When the cycle ends, the starting sequence goes on (with the starter motor control): the glow
plugs pre-heating control remains active until the engine starts or until the starting sequence
is interrupted. In case of repeated attempts to start, the glow plugs pre-heating control goes
on: the time configured with P.0209 is counted, but only during the first attempt.
Warning: the glow plugs pre-heating cycle is performed simultaneously with the pre-lubrication
cycle. If P.0242 parameter is set to a value higher than P.0209, the glow plugs pre-heating
cycle will last P.0242 seconds as well.
The controller can control engine cranks alternately managing two battery sets to ensure
engine start. To use this function requires at least one output configured with function
DOF.1008 (BATT1).
If only BATT1 output is configured, then the controller activates this output to select battery
#1, it disables this output to select battery #2.
If both BATT1 and BATT2 outputs are configured, then the active board activates BATT1
output to select battery #1 and BATT2 output to select battery #2. It also guarantees a
minimum time of
two seconds with both outputs off during the shift between battery #1 and
battery #2.
Finally, HS315 guarantees a minimum delay of two seconds between the selection of a battery
and the starter motor control.
In automatic, the board performs on battery #1 the number of starting attempts configured with
P.0211 parameter. If the engine does not start, it switches on battery # 2 and performs again
the same number of starting attempts. If the engine has not been started yet, it activates A022
shutdown ("failure to start").