EAAM057608EN
GC250 Technical Manual 27
With this system (default configuration of the device) the engine is started by delivering power
to the solenoid valve, which opens/closes the fuel flow and is turned off by cutting the power.
So the controller activates the
T.03
FUEL SOLENOID outlet prior to starting the engine (at
least a delay of 200 ms is provided between the activation of this command and the activation
of the command for the starter motor). It deactivates it when the motor must be turned off. If
the engine is stopped by other means, it is possible to delay the deactivation of this command
through parameter P.0234.
Pick-up stop system
This system is used when the engine requires an explicit command to stop. It is mainly used
for safety reasons: in case of arrest during de-energizing, in fact, if you accidentally disconnect
the wire connected to the
T.03
terminal, the engine stops
.
Instead, in case of shut-off while
energizing, the engine does not stop until it receives the explicit arrest command.
By default, the positive auxiliary output
T.05
is configured for the command of arrest during
energizing. You can configure any other output or even the same output
T.03
FUEL
SOLENOID (
while observing the warning below
) to give the shut-down command by setting
the relevant parameters (refer to par.
.
WARNING:
The series connection of the emergency stop button to terminal
T.03
DOES NOT WORK WITH SYSTEMS OF ARREST DURING ENERGIZING
because
you would get the opposite effect, i.e. cutting the power to the stop valve, even if the
controller
activates the “LOCK
A048 Emergency stop”
and the output configured
as stop command anyway.
+
For these systems, in case you need to guarantee the
operation of the mushroom push-button irrespective of the operation of the controller,
it must have a double contact: one NC connected in series to the
T.03
, as shown
before, to cut the power to the starter motor and one NO between battery plus and
valve/stop command with no intermediate fuses which, when activated, delivers
positive voltage to the stop valve by bypassing the controller command.
