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D-PRO Protection relay Technical Manual
7.2
By pressing the ACK/TEST key on the DST4602 controller, you can identify the anomaly.
If
you push this key when the horn is on, it stops the acoustic signal:
if you press it twice,
it “acknowledges” the anomaly.
The previous operations “acknowledge” all active anomalies. The relevant numeric codes on
the display stop flashing.
7.3
An anomaly can be cancelled only when the cause that activated it is no more present.
The controller automatically resets all the acknowledged warnings when their cause is no
longer active.
In order to reset alarms, it is necessary to follow one of the below procedures:
•
Put the key selector on OFF/RESET.
•
Using a digital input configured with the feature DIF.2001 -
“Alarm reset command”.
Anomalies are cancelled when the input from "inactive" turns into "active".
7.4
The following functions for the configuration of digital outputs are linked to anomalies:
•
DOF.3151
(“reset of anomalies”). The controller activates this output for
one
second
when the internal sequence for the reset of anomalies is carried out. With this
procedure, it is also possible to reset externally managed anomalies.
•
DOF.3152
(“external horn”). This output is activated and deactivated along with the
internal hooter. It can be used to control a more powerful hooter and/or a lamp.
•
DOF.4001: the output will be activated if at least an early warning is active.
•
DOF.4004: the output will be activated if at least a shut-down is active.
•
DOF.0103 (Logics AND/OR)
•
ST.008: the output will be activated if at least an early warning is active.
•
ST.011: the output will be activated if at least a shut-down is active.
•
ST.012: the output will be activated if at least a non-identified early warning
is active.
•
ST.015: the output will be activated if at least a non-identified shut-down is
active.
7.5
WARNING: the use of this function may seriously damage the engine. In any case,
SICES cannot be held responsible for malfunctioning and damages to things and/or
persons resulting from the use of the OVERRIDE function.
Summary of Contents for D-PRO
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