FUNCTION CHARACTERISTICS
143
NVA100X-D - Manual - 02 - 2016
51LR-S2-diagram.ai
BF Enable (ON
≡
Enable)
ILR>>BF
towards BF logic
ILR>> BF
&
Trip ILR>>
t
L R
>>
def
0
T
RESET
Start ILR>>
Trip ILR>
TRIP
P
ING
M
ATRIX
(LED
+R
EL
AY
S
)
ILR>>TR-K
ILR>>TR-L
ILR>>ST-K
t
L R
>>
def
I
L 1L
I
L 2L
≥
1
≥
1
ON
≡
Enable ILR>> overcurrent element
&
&
I
L 3L
ILR>> Enable
I
L 1L
≥
I
L R
>>
def
I
L R
>>
def
I
L 2L
≥
I
L R
>>
def
I
L R
>>
def
I
L 3L
≥
I
L R
>>
def
I
L R
>>
def
ILR>> overcurrent element (51LR) block diagram
Output t
LRCLP>>
T
0
t
LRCLP
>>
t
LRCLP
>>
Block1, Block2
Starting control set
Starting
STOP
RUNNING
Mode51LR>>
Mode51LR>>
Binary input INx
T
0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T
0
n.o.
n.c.
INx
t
OFF
Speed control
Speed control
“0”
“0”
Speed control
“0“ with speed control
“1“ without speed control
“1”
“0”
Mode51LR
“0”
“0”
without speed control
with speed control
Locked rotor - Second element logic diagram
Starting control set
Starting
control
&
C L P s o ur ce
M R E nab l e
CB-State
I
R U N
= 0.1
I
B
M a x [
I
L1...
I
L3
] ≥
I
RUN
I
L1...
I
L3
Output
t
CLP
t
CLP
M a x [
I
L1...
I
L3
] ≥
I
RUN
M a x [
I
L1...
I
L3
] ≥
I
RUN
M a x [
I
L1...
I
L3
] <
I
RUN
S t ar t i ng de t ec t i o n
R e s e t C L P t i m e r
CB State
CB OPEN
CB CLOSED
CB CLOSED
CB OPEN
t
I
RUN
t
CLP
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
UNBLOCK
UNBLOCK
HIGH THRESHOLD/
BLOCK
HIGH THRESHOLD/
BLOCK
+
U
AUX
-
U
AUX
Binary input INx
T
0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
0
n.o.
n.c.
INx
t
OFF
Motor restart
Motor restart
Motor restart
LOW TH.
LOW TH.
