Thytronic XMR-P 4l+4V - Page 200

200
FUNCTION CHARACTERISTICS
51LR-S2-diagram.ai
t
LR
>>
def
0T
RESET
Start ILR>>
Trip ILR>
TRIPPING MATRIX (LED+RELAYS)
ILR>>TR-K
ILR>>TR-L
ILR>>ST-K
t
LR
>>
def
I
L1L
I
L2L
≥1
≥1
ON≡Enable ILR>> overcurrent element
&
&
I
L3L
ILR>> Enable
I
L1L
≥ I
LR
>>
def
I
LR
>>
def
I
L2L
≥ I
LR
>>
def
I
LR
>>
def
I
L3L
≥ I
LR
>>
def
I
LR
>>
def
ILR>> overcurrent element (51LR) block diagram
Output t
LRCLP>>
T0
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
T0
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
&
CLP source
MR Enable
CB-State
I
RUN
= 0.1 I
B
Max[I
L1...
I
L3
] ≥ I
RUN
I
L1...
I
L3
Output t
CLP
t
CLP
Max[I
L1...
I
L3
] ≥ I
RUN
Max[I
L1...
I
L3
] ≥ I
RUN
Max[I
L1...
I
L3
] < I
RUN
Starting detection
Reset CLP timer
CB State
CB OPEN CB CLOSED CB CLOSEDCB OPEN
t
I
RUN
t
CLP
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK UNBLOCK UNBLOCK
HIGH THRESHOLD/
BLOCK
HIGH THRESHOLD/
BLOCK
+UAUX
-UAUX
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.
XMR-D EQUIPMENT MANUAL
Ed. 2.9 - 02/2021