Sices HS 315, Техническое руководство

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Technical Handbook 157
•
With a digital input configured with DIF.2034 function ("Manual stop control"). This
input is managed exactly as the STOP key: same as said above.
•
It is possible to control the stopping of the engine manually with a control through the
serial ports. These controls can be enabled by a digital input configured with DIF.2706
function - "Enable controls from the serial ports": if this input exists, it should be active.
To start the engine manually, it is necessary to write (within 5 seconds) the Modbus
registers in sequence:
o
HOLDING REGISTER 101: enter the password configured with the parameter
P.0004.
o
HOLDING REGISTER 102: enter the value “21” or “22”.
Note: the stop cycle can also be performed with already stopped engine.
As a rule, in MAN the controller does not perform any cooling cycle for the engine: the operator
is free to keep the engine running (without load) as long as the coolant temperature is
sufficiently low. From version 1.09, however, it is possible to enable the cooling cycle also in
MAN mode, by setting to "1" the bit 1 of the parameter P.0249. If enabled, the cooling cycle
will be performed before each stop cycle, if the GCB circuit breaker has previously been
closed. A second stop command during the cooling cycle stops it.
Before describing automatic start/stop procedures, it is necessary to define when the engine
should be started and stopped automatically.
The engine is started automatically if there are no shutdowns and deactivations and if at least
one of these conditions is present:
•
If the TEST is activated.
•
If the REMOTE START is activated.
•
If there is no active "inhibition to automatic intervention" of the generator and the
automatic intervention of the generator is required:
o
A charge cycle is required for the plant battery.
o
The loads are not supplied by the plant battery nor by the auxiliary source. In
this condition, the controller starts the engine only if P.9653 is set to 1 (it
enables this function).
o
The engine's cranking battery is discharged, and the engine is required to
start charging it (P.9655 <> 0).
o
If the controller has both the opening and closing commands for the GCB
circuit breaker, it normally opens GCB before stopping the engine. If
configured by setting parameter P.0243
to “1”, the controller can keep the
engine running if it is not able to open the circuit breaker.
In automatic mode, the engine can be stopped in two ways:
•
With normal procedure. After opening the GCB switch (if possible), the board performs
a cooling cycle of the engine (only if previously the load was connected to the
generator), by keeping it running without load (or at 0 current if GCB cannot be
opened). This procedure applies if:
o
No automatic start request is pending (see above)
o
It triggers an "inhibition to automatic intervention", with the board in AUTO.
o
An anomaly qua
lified as “deactivation” occurred (it is an anomaly typically
dangerous for loads but not for the engine).