14
User’s Manual
As soon as the board is powered it executes the following operations:
Lamp Test: during this phase it turns on all the indicators in the front panel and it shows
888 (with the decimal points turned on) on the three displays. This operation lasts two
seconds and allows the identification of any failure in the front panel that could involve
visual signaling of a fault.
It checks if it has to execute the CALIBRATION procedure. To request the execution of
such procedure press “MODE / ACK” while turning the board. In this phase all the
indicators on the front panel are turned off as well as the displays “V” and “A”, while the
display “MULTIFUNCTION” shows three question marks (this procedure can be made
only by trained operator using proper measurement systems).
Display the software level. The display “MULTIFUNCTION” shows the message “REL”
(release). The display “V” shows the main version; the display “A” shows the secondary
version. For instance, for a software level 1.23 the display “V” will indicate “1” and the
display “A” will indicate “23”. In this phase all the indicators on the front panel are turned
off. This phase lasts one second.
In the event of data errors in the non-
volatile memory, the display “MULTIFUNCTION” shows,
in place of
“REL” the message:
“INI” if the non-volatile memory doesn’t contain any data
“F09” if the non-volatile memory contains mistaken data
After the execution of the above-mentioned operations, the board starts executing the work
sequences, according to the position of the key selector.
During the operation of the generator set (but even when it is not running) some faults may
occur. The faults can be divided into three categories according to the way the affect the
generator set:
Alarms: faults that are not immediately dangerous for the generator set and for its load,
and that therefore allow the generator set to keep on working. They require an operator’s
intervention otherwise they could cause a more dangerous fault.
Deactivations: these faults are more dangerous for the load that needs to be switched
immediately on the mains (even if there’s a mains failure) but they aren’t immediately
dangerous for the generator set and/or for the operator: the generator set will have to be
stopped in any case but it can be stopped with the standard procedure (cooling cycle,
etc.).
Blocks: these faults can damage the generator set and sometimes the load, too. When
they are activated, the load is immediately switched on the mains (even if there’s a mains
failure) and the engine is stopped through the emergency procedure (without the cooling
cycle).
Any fault can be activated only if the key selector is on MAN, AUTO or TEST.
The alarms can always be activated. There may be more than one alarm at the same time.
The deactivation can be activated if in the moment the cause occurs no deactivation or block
is present, while one or more alarms can be present. There cannot be two deactivation at the
same time.
The blocks can be activated only if in the moment the cause occurs no other block is present,
while deactivation and/or alarms can be present. As a principle, there cannot be two blocks at
