EAAM057608EN
GC250 Technical Manual 95
When a function with value 2501 is coupled with a digital input, acquisition of this input
depends on the time set in P.0207 and/or P.0208; the acquisition time related to the
digital input is skipped.
The controller also makes available, to the use of AND/OR logics, the internal status ST.080 -
"Contact starting inhibition”.
The controller records any change of the inhibition status in the events log, if it is enabled with
bit 6 of the P.0441 parameter:
EVT.1013: Inhibition activated (from configurable input)
EVT.1014: Inhibition not activated (from configurable input)
9.4.2
Inhibition from clock
Using parameters P.0421, P.0422 and P.0423 it is possible to define on a weekly basis the
hourly operation ranges. In particular, parameter P.0421 allows to set the generator's weekly
operation days. The remaining two allow to set an hour range valid for all selected days. The
range start time (P.0422) refers to the days set in P.0421, while the range end time (P.0423)
refers to the same day, if its value is higher than P.0422, or to the following day if lower (across
midnight). Moreover, setting P.0422 and P.0423 to the same value, you define a full day range.
Apart from the days and time configured, the inhibition to the automatic intervention is active.
The controller also makes available, to the use of AND/OR logics, the internal status ST.081 -
"Clock/calendar starting
inhibition”.
9.5
The device can start, stop and protect the engine by means of a series of thresholds on the
acquired measures (oil pressure, coolant temperature, speed etc.). Before describing engine
management sequences, it is necessary to define in which way the controller determines the
engine running status.
9.5.1
Engine running/stopped status acknowledgement
There are three engine status:
Idle
: the activation of the command is allowed for starter motor.
In movement
: the engine is not considered running, therefore:
o
If the command for the starter motor is active, it is maintained to try to get the
engine started.
o
If the command for the starter motor is not active, the controller impedes the
starting. (as the engine is rotating).
Running
: the controller deactivates the command of the starter motor and impede its
restart.
The controller recognises the status of the engine
considering the following conditions:
From the signal voltage D+ of the alternator
This control is enabled if the
measure of the D+ voltage is enabled (P.4041 must be set as AIF.1300
– “D+ signal”).
Two thresholds are available (P.0230 e P.0231), which have to be both different from
zero and P.0231 has to be major than P.0230 (otherwise this check is disabled).
The instantaneous status of the engine is:
o
Idle
if the D+ voltage is lower than P.0230.
o
In movement
if the D+ voltage is higher than P.0230, but lower than P.0231.
