D-PRO Protection relay Technical Manual 13
DOF.3151
Faults reset
YES
It activates when the controller goes to RESET mode
DOF.3152
External horn
YES
It activates together with an internal horn.
DOF.4001
Warnings
YES
It activates in case of warnings
DOF.4005
Alarms (deactivations and unloads)
YES
It activates in case of alarms (deactivations and shut-
downs)
4.4.2
AND/OR logics are simply a list of boolean values (true/false, on/off, 1/0), which can be
configured by the operator (programming), which the controller evaluates and whose result
can be assigned to a digital output or to a virtual digital input (see par. 4.4.1). For using the
AND/OR logics with a digital output, use the DOF.0103function.
NOTE: the configuration of the AND/OR logics must be carried out by means of a PC
with the software BoardPrg3.
First, the operator must decide if the list of conditions have to be evaluated as AND (all must
be verified) or OR (at least one condition must be verified).
It’s not possible to have mixed
AND/OR logics (you can do it using virtual digital inputs, see below).
You can add up to 30 conditions. Each condition can be denied individually: for example, in
the figure above the controller will verify that the digital input 3 and the digital output 8 are both
not active
. The following conditions can be added:
•
DI_XXX: logic statuses of all digital inputs (physical and virtual).
•
DO_XXX: logic statuses of all digital outputs.
•
AL_XXX: presence of warning/alarms.
•
ST_XXX: internal statuses of the controller.
•
AT_XXX: statuses concerning the thresholds on analogue measures.
The following table shows the list of the internal statuses available for the AND/OR logics.
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