32
User’s Manual
4.
The “START” output (terminal 20) controlling the generator set starter, is enabled. The
output is kept for the time set with the parameter P08 or until the engine running
recognition. In this phase
the display “MULTIFUNCTION” shows the message “STA”. If
the engine gets started phase 6 will follow, otherwise phase 5 will follow (unless the
starting attempts have ended,
5.
The “START” output is disabled and there’s a wait for with the duration set with the
parameter P38 During this phase the preheat function for diesel engines is enabled, as
well as the “AUX OUTPUT 1” (terminal15) and the display “MULTIFUNCTION” shows the
message “PRE”.
6. Engine running.
The activation sequence is always: “FUEL SOLENOID” (terminal 22), “AUX OUTPUT 1”
(PREHEAT OUTPUT) (terminal 15) and then “START” (terminal 20). Thus, it is possible to use
this feature to drive an auxiliary output that requires to be activated before the actual start
command (use parameter P38 to configure the delay time).
Starting from SW version 08.00.12, the activation sequence is always: “FUEL SOLENOID”
(terminal 22), “AUX OUTPUT 1” (PREHEAT OUTPUT) (terminal 15) and then “START”
(terminal 20). Thus, it is possible to use this feature to drive an auxiliary output that requires
to be activated before the actual start command (use parameter P38 to configure the delay
time). This sequence is valid also in manual mode.
Starting from SW version 08.00.38, the activation sequence is subjected to the engine stopped
or the shut down cycle completed conditions.
In this phase there’s a wait until the generator reaches the operating speed, that is, when the
voltages on all the phases and the frequency are within the programmed thresholds (see par.
5.1.2
). If this doesn’t take place within the time set with the parameter P32, the block “operating
speed not reached” (F08) is activated and the engine will be stopped. In this phase, if the
voltage or the frequency exceeds the maximum thresholds, the corresponding blocks are
activated (F02 and F04).
This phase is just a wait to allow the lubrication and the heating of the generator set before
connecting it to the users. The following phase takes place as soon as one of the following
requirements is met:
After the time set with the parameter P06 has passed since the generator is in window.
If the temperature analogue sensor exists, if a minimum threshold for the supply
permission has been set (P55 different from 0) and if the temperature is over such
threshold.
In this phase the blocks and deactivations F01, F02, F03 and F04 are enabled, while the block
F08 is disabled.
In sequential order there are:
Opening of mains contactor (closed contact at terminals 60-61)
Change-over wait (set through parameter P22)
Closing of generator set contactor (closed contact at terminals 57-58)
Please, consider that the status of each contactor cannot be inverted from the prior command
before the time set through the parameter P41 is elapsed from the last command.
