57
NV10P - Manual - 01 - 2015
CHARACTERISTICS
Logical block (Block1)
If the
U1<BLK1
enabling parameter is set to
ON
and a binary input is designed for logical block
(Block1), the protection is blocked off whenever the given input is active.
The trip timer is held in reset condition, so the operate time counting starts when the input block goes
down.
[1]
The enabling parameter is available inside the
Set \ Profi le A(or B) \ Positive sequence un-
dervoltage - 27V1 \
U1< Element
\ Setpoints
menus, while the
Block1
function must be assigned to
the selected binary input inside the
Set \ Inputs \ Binary input IN1(x)
menus (IN1 or INx matching)
.
All the named parameters can be set separately for
Profi le A
and
Profi le B
.
Note 1 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside
CONTROL AND MONITOR-
ING
section.
Logic diagram concerning the positive sequence undervoltage element - 27V1
Fun-F27V1_S1.ai
RESET
t
U1<def
0
T
TR
IP
P
ING
M
ATR
IX
(LED
+R
EL
AY
S
)
t
U1<def
Start U1<
U1<ST-K
Start U1<
U1<TR-K
U1<ST-L
U1<TR-L
Trip U1<
Trip U1<
Trip U1<
BF Enable (ON
≡
Enable)
U1<BF
towards BF logic
&
BLK1U1<
U1< BF
&
&
&
Enable (ON
≡
Enable)
Block1 input (ON
≡
Block)
U1<BLK1
Block1
Block1
U
1
Binary input INx
T
0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T
0
n.o.
n.c.
INx
t
OFF
U
1
≤
U
1
<
def
U
1
<
def
(ON
≡
Inhibit)
Disable 27 function by operator
&
State
≥
1
( 1
≡
DDI closed)
DDI state
( 1
≡
upstream)
U1<disbyCB_OPEN
Logic diagram concerning the positive sequence undervoltage element - 27V1
Fun-F27V1_S1.ai
RESET
t
U1<def
0
T
TR
IP
P
ING
M
ATR
IX
(LED
+R
EL
AY
S
)
t
U1<def
Start U1<
U1<ST-K
Start U1<
U1<TR-K
U1<ST-L
U1<TR-L
Trip U1<
Trip U1<
Trip U1<
BF Enable (ON
≡
Enable)
U1<BF
towards BF logic
&
BLK1U1<
U1< BF
&
&
&
Enable (ON
≡
Enable)
Block1 input (ON
≡
Block)
U1<BLK1
Block1
Block1
U
1
Binary input INx
T
0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T
0
n.o.
n.c.
INx
t
OFF
U
1
≤
U
1
<
def
U
1
<
def
(ON
≡
Inhibit)
Disable 27 function by operator
&
State
≥
1
( 1
≡
DDI closed)
DDI state
( 1
≡
upstream)
U1<disbyCB_OPEN