OPERATING MODES | PAGE 9
3.4 LOCKED MODE
In Lock mode , the control unit disables the genset startup under any
condition.
3.5 AUTOMATIC MODE LOCK
Pressing the AUTO or MAN keys for 5 seconds activates the mode lock. This
status of the control unit is indicated by the ashing of the button for the mode
currently active. To deactivate the mode lock and allow normal operation of the
control unit, press the key associated to the active mode for 5 seconds.
5’’ Locked 5’’ Unlocked
5’’ Locked 5’’ Unlocked
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).
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).
• Programmed start time (if a schedule timer is available).
3.3 TEST MODE
In test mode , the control unit starts the genset following the procedure
explained in the section Engine Starting except the activation of contactors
except in the event a network failure occurs.
In Test mode, the control unit does not manage the functions associated with the
programmable inputs except those relating to alarms, analogue inputs and the
starter disable function of the control unit (IA).
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