Sices HS 315, Техническое руководство

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Technical Handbook 27
JL-2; although one is already present inside, with particularly inductive loads (remote control
switches, electromagnets, etc.) it is advisable to use a damper diode for opening over voltages.
Caution: for currents above the rated use an external relaunch relay.
The controller activates this command when motor start is required and deactivates it
automatically within 200-300ms from the instant when it recognizes the motor started state.
If this command is not necessary (for example with CAN-BUS interface engines), the output
can be configured for other purposes by means of the parameter P.3005, refer to par. 5.5.3
and [1].
Positive relay output, with a capacity of 3A @30VDC. Integrated internal diode for damping
opening over voltages. This terminal shows the battery voltage present on connector JL-2;
although one is already present inside, with particularly inductive loads (remote control
switches, electromagnets, etc.) it is advisable to use a damper diode for opening over voltages.
Caution: for currents above the rated use an external relaunch relay.
The output is configured by default to control the fuel interception solenoid valve with de-
energizing arrest systems (see below); if not used for this purpose (for example in the case of
engines with CAN-BUS interface), it can be reconfigured to serve other purposes by means of
the parameter P.3006, refer to par. 5.5.3 and [1].
Two different ways to stop the engine are implemented in HS315.
Drop-down stop system
With this system (most widely used and default configuration of the HS315) 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 JL-3 FUEL SOLENOID output 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 engine 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 JH-3 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, digital output JE-1 is configured for the command of arrest during energizing. You
can configure any output (
while observing the warning below ) to give the shutdown
command by setting the relevant parameters (refer to par. 5.5.3 and [1]).
WARNING! The series connection of the emergency stop button to terminal JL-2 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 HS315 activates the
A048 Emergency stop alarm and the output configured as stop command anyway. For these
systems, in case you need to guarantee the operation of the emergency pushbutton
irrespective of the operation of the HS315, it must have a double contact: one NC connected
in series to the JL-3, 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 HS315 command.