EAAM057608EN
GC250 Technical Manual 97
All digital outputs of the controller are configurable and therefore the engine commands can
be associated in any way to the outputs of the controller. The outputs START and FUEL are
assigned in default to outputs
T.03
and
T.04
, which are able to supply a major current, but is
is possible to reassign them when needed (see par. 5.4).
The command
STOP
is assigned in default to output
T.05
(but it can be reassigned itself). For
the other four commands, being optional, no dedicated outputs are provided.
To associate each of these commands to any o
f the controller’s outputs, parameter P.3001
must be used (for output 1 or on the equivalent parameters for the other outputs) (menu 1
system, 1.7 digital Inputs/Outputs, 1.7.3 digital Outputs, 1.7.3.1 digital Outputs) using values:
DOF.1001:
glow-plugs preheating (PREHEAT).
DOF.1003:
: fuel valve (FUEL).
DOF.1005:
: start command (START).
DOF.1006:
: stop command when energized (STOP).
9.5.3
Command sequence of the engine
9.5.3.1
Starting
The start-up sequence is activated if there are no failures, downloading and deactivations, and
if at least one of these conditions happens:
In MAN mode
:
o
If button
START
is pres
sed. If the “Protected starting” function is active (bit 2
of P.0495 =1), if you press the button just once, you select mode
MAN
and it
is necessary to press it again to start the engine. Furthermore, there are two
possible sequences of manual start-up:
➢
If bit 1 of parameter P.0495
(“Keyboard options”) is to zero, by
keeping button
START
pressed, the start-up begins; the duration is
set by the operator: the attempt interrupts when the operator releases
button
START
.
➢
Automatic sequence: pressing and releasing button
START
, the
device starts the engine automatically; the maximum duration of the
starting attempt is selected through parameter P.0210.
o
If modbus commands via USB port are used (
in this case, the automatic
sequence is used.
). The commands can be password protected (P.0004)
which has to be sent before any command. To send the command, it is
necessary to write in sequence (within 5 seconds):
➢
HOLDING REGISTER 101: write the password configured
with the parameter P.0004.
➢
HOLDING REGISTER 102: write value “11”.
In
MAN
only one attempt of start is done (even if the automatic sequence is performed),
without activating the “failed start” anomaly.
In AUTO mode
:
o
If the
TEST
mode is activated (see par.
).
o
If the
REMOTE START
mode is activated (see par.
).
o
If an automatic starting is required and no inhibition to the starting is activated
(see 9.4).
In
AUTO
mode, the device automatically starts the engine and possibly with more than
one attempt; the maximum duration of the single starting attempt is selected with
parameter P.0210, the number of attempts with parameter P.0211.
