OPERATING MODES | PAGE 8
3. OPERATING MODES
3.1 MANUAL MODE
In manual mode, the control unit is commanded by the user via the front panel of
the display module. The user can start and stop the engine by pressing the
START and STOP keys respectively.
Pressing the START key initiates the engine starting procedure (without
deactivating the network contactor). Pressing the STOP key initiates the engine
stopping procedure with cooling; a second press of the STOP key causes the
engine to stop immediately without waiting for the cooling time.
x 1 click
WITH cooling
x 2 (double click)
WITHOUT cooling
NOTE
In manual mode, the control unit's protection devices remain active, being able
to produce alarms that cause the engine to stop.
In manual mode, the control unit does not take into consideration the start
conditions (programmed, by external signal) that can be programmed.
Furthermore, activation of the network and genset contactors is performed by
pressing the RED/MAINS and GROUP/GEN keys.
In order to achieve activation of the genset contactor, the engine has to be
running and provide a stabilised electrical signal. Activation of the genset
contactor deactivates the network contactor and vice versa; there is a time
delay between activation of contactors of 1 second (not programmable).
Activation of the genset contactor deactivates the network contactor and vice
versa; there is a congurable time delay (Times table, parameter 35) between
activation of contactors of 1 second (not programmable).
3.2 AUTOMATIC MODE
In automatic mode
supervision of the installation is managed by the
control unit. Under certain conditions which can be programmed, the control
unit starts the genset activating the genset contactor to power the installation.
Programmable conditions for genset starting and activation of the genset
contactor include:
• Maximum network voltage alarm (Alarms table, parameter 88).
• Minimum network voltage alarm (Alarms table, parameter 90).
• Maximum network frequency alarm (Alarms table, parameter 92).
• Minimum network frequency alarm (Alarms table, parameter 94).
• Network sequence alarm (Alarms table, parameter 96).
• Network failure alarm (Alarms table, parameter 98).
• Network contactor failure alarm (Alarms table, parameter 100).
• External start (Settings table, parameter 10).
• Programmed start time.
• Forced operation signal (Settings table, parameter 12 and
Regulations table, parameter 25).
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