69
NC20 - Manual - 01 - 2015
FUNCTION CHARACTERISTICS
46NS2.ai
I
N C
R E S E T
t
N>>def
0
T
≥
1
Start IN>>
Trip IN>>
CB-State
ON
≡
Enable IN>> unbalance current element
(Pickup within CLP)
(Pickup outside CLP)
&
T
0
t
NCLP>>
INCLP>>Mode
I
N C L P >>def
t
NCLP>>
TR
IP
P
ING
M
A
TR
IX
(LED
+R
EL
A
Y
S
)
A
B
C
A =“1”
A =“0 or OFF”
Output
t
NCLP>
IN>> Enable
t
NCLP>>
CB State
CB OPEN
CB CLOSED
CB OPEN
Output t
NCLP>>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
IN>>TR-K
IN>>TR-L
IN>>ST-L
IN>>ST-K
≥
1
CLP IN>>
I
N C
≥
I
N
>
def
I
N
>>
def
I
N C
≥
I
N C L P >>def
t
N>>def
Neutral unbalance current (46N) - Second element logic diagram (IN>>)
Binary input INx
T
0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T
0
n.o.
n.c.
INx
t
OFF
BLK1IN>>
&
&
&
Enable (ON
≡
Enable)
IN>>BLK1
Block1
Start
I
N
> >
Trip
I
N
>>
Block1
Block1
&
(ON
≡
Inhibit)
Start
I
N
>>
IN>AL inhibition
IN>AL disbyl>>
&
(ON
≡
Inhibit)
Start
I
N
>>
IN> inhibition
IN> disbyl>>