EAAM057608EN
GC250 Technical Manual 109
DIF.4021 , DIF.4023 , DIF.4024 . The anomaly can be activated only if GCB switch is
closed. The board will activate this anomaly if the digital input is uninterruptedly active
for the configured (P.2002) time span.
DIF.4031 , DIF.4033 , DIF.4034 . The anomaly can be activated only if the fuel
electromagnetic valve is open (
FUEL
active, see 9.5.2). The board will activate this
anomaly if the digital input is uninterruptedly active for the configured (P.2002) time
span.
DIF.4051 . The board will activate this anomaly if the digital input is uninterruptedly
active for the configured (P.2002) time span. The anomaly activation causes the
stopping of the fuel pump.
10.6
For each analogue input it is possible to set two thresholds on the acquired measure and each
threshold can activate an anomaly. These anomalies are generic, as the controller does not
know how they have to be managed. And does not have pre-defined alarm messages. They
will not be described in the following paragraphs, because they will be infinite repetitions of
the same description for each analogue input. They are described here instead, mentioning
the parameters for input
T.09
.
The controller assigns the numeric codes from 301 to 312 to the generic anomalies related to
the digital inputs (doc [1] contains a table showing the code per each input). The controller will
show a generic symbol, followed by an arrow to indicate:
: “High value from analogue input:” if the anomaly is activated when the
measure is higher than the threshold.
: “Low value from analogue input:” if the anomaly is activated when the
measure is lower than the threshold.
For each analogue input, there are six parameters available for the management of thresholds,
three for each threshold (P.4003, P.4004 and P.4005 for the first threshold of the first analogue
input; P.4006, P.4007 and P.4008 for the second threshold of the first analogue input).
Besides the threshold value (P.4003 or P.4006) and the delay to be managed (P.4004 or
P.4007), the operator has to configure the operations connected to the threshold (P.4005 or
P.4008). The parameter that configures the actions is managed through bits (every bit
enables/disables a function connected to the threshold). A description for these parameters
follows 5.7.2
ATTENTION!
: by setting the d
elay to “0”, the acquisition of the anomaly is not disabled
.
10.7
INFORMATION!
Since you cannot define in advance neither which digital or analogue
inputs (those from the controller or from the additional modules) will be used, nor what function
will they perform, the list below refers, as an example, to the parameters of the first
configurable input
T.09
. The symbol
(*)
or the indication “or equivalent for the other inputs”
next to a parameter show that the same varies according to the particular input configured.
From this point on, words
enabling
and
activation
will be utilized:
Enabling an anomaly means having the minimum conditions necessary in order for
the controller to observe the cause.
Activation of an anomaly refers to the cause after enabling.
