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CHARACTERISTICS
31
NV021 - Manual - 08 - 2012
Block1
A change in status of a binary input effects a block for a length of time equal to the activation of the
input[1]; the element pickup that wish be blocked must be enabled (the
Block1
parameter must be
set to
ON
in the concerning menu).
[2]
The application of the IN1 binary input for the acquisition of the Block1 (logic block) coming from
external signal is shown in the following fi gure; in the example the block signal is ORed with Block2
(selective block) to block the generic (xxx) element.
Trip ProtExt
The binary input detects a trip coming from an external protective relay: the information is available
for the breaker failure function (BF).
Reset counters
A change in status of a binary input effects a reset of all start/trip partial counters.
[3]
Reset CB Monitor
A change in status of a binary input effects a reset of all counters concerning the circuit breaker
diagnostic:
CB Open counter
52a-52b
The CB position can be acquired by means of binary inputs connected to the auxiliary contacts: the
information is used in the following functions:
CB position (open-closed)
CB diagnostic (N. of operations, trip time)
Breaker Failure (BF).
Note 1 The Block1 (logic block) keeps block of the protection for the whole time when the input is active.
Note 2 The activation of one binary input produces indiscriminately a block of all protective elements programmed for being blocked from Block1
Note 3 The reset of the total counters is practicable by means ThySetter command with Session Level 1 (available with password)
•
•
•
•
Block1.ai
xxxx Block1
Enable (ON
≡
Enable)
Block1 input (ON
≡
Block)
Block1
&
Block1
Block1
Binary input IN1
Binary input allocation for logic block
(Block1)
Blocking
T
0
IN1
t
ON
T
0
n.o.
n.c.
IN1 t O N
Logic
IN1 t O F F
IN1
t
OFF
Block1.ai
xxxx Block1
Enable (ON
≡
Enable)
Block1 input (ON
≡
Block)
Block1
&
Block1
Block1
Binary input IN1
Binary input allocation for logic block
(Block1)
Blocking
T
0
IN1
t
ON
T
0
n.o.
n.c.
IN1 t O N
Logic
IN1 t O F F
IN1
t
OFF
ExtProt.ai
Breaker failure (BF)
+
U
AUX
-
U
AUX
IN-
IN+
Trip ProtExt
Binary input IN1
T
0
IN1
t
ON
T
0
n.o.
n.c.
IN1 t O N
Logic
IN1 t O F F
IN1
t
OFF
Binary input allocation for trip acquisition from external protection device
ExtProt.ai
Breaker failure (BF)
+
U
AUX
-
U
AUX
IN-
IN+
Trip ProtExt
Binary input IN1
T
0
IN1
t
ON
T
0
n.o.
n.c.
IN1 t O N
Logic
IN1 t O F F
IN1
t
OFF
Binary input allocation for trip acquisition from external protection device
CB-pos.ai
CB position
CB diagnostic
Breaker failure (BF)
52a
52
52b
+
U
AUX
-
U
AUX
IN-
IN+
52a
IN-
IN+
52b
Binary input IN1
T
0
IN1
t
ON
T
0
n.o.
n.c.
IN1 t O N
Logic
IN1 t O F F
IN1
t
OFF
Binary input IN2
T
0
IN2
t
ON
T
0
n.o.
n.c.
IN2 t O N
Logic
IN2 t O F F
IN2
t
OFF
Binary input allocation for CB state acquisition
CB-pos.ai
CB position
CB diagnostic
Breaker failure (BF)
52a
52
52b
+
U
AUX
-
U
AUX
IN-
IN+
52a
IN-
IN+
52b
Binary input IN1
T
0
IN1
t
ON
T
0
n.o.
n.c.
IN1 t O N
Logic
IN1 t O F F
IN1
t
OFF
Binary input IN2
T
0
IN2
t
ON
T
0
n.o.
n.c.
IN2 t O N
Logic
IN2 t O F F
IN2
t
OFF
Binary input allocation for CB state acquisition