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LY71 with LX71-KR comparator function
+V
Switching of comparing set number and latch input
Number
Signal
Input
①
+Vcc
External power
input
②
CMP0
Bit0
③
CMP1
Bit1
④
CMP2
Bit2
⑤
CMP3
Bit3
⑥
LATCH
Latch
⑦
COM
Common
Input connector pin array
Terminal
Input circuit
Signal
Set
00
Set
01
Set
02
Set
03
Set
04
Set
05
Set
06
Set
07
Set
08
Set
09
Set
10
Set
11
Set
12
Set
13
Set
14
Set
15
CMP0
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
CMP1
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
CMP2
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
CMP3
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
：
High
L
：
Low
* If CMP0 to CMP3 have no signal, set-00 is automatically selected.
Pin 1
Pin 2 to Pin 6
Pin 7
Input signal
GND
External power supply
+ 12V or + 24V
Switch
circuit
①
Display unit side
Timing chart
High
Low
Input signal
(CMP0 to CMP3)
10ms or more
70ms or more
2
nd
input
Keep the input signal low for 10ms or more.
Please allow at least 70ms when re-entering.
GND
Input circuit delay time:
When the external power supply is + 24V and the above
①
is connected, the delay time until the
photocoupler is turned on is about 350μs.
If the external power supply is + 24V and the above
①
is not connected, the delay time until the
photocoupler is turned on is about 3μs.
It takes about 3ms at the shortest from turning on the photocoupler to internal operation.
Photo coupler
1
st
input
External side
Selection of comparison set number
Input connector pin assignment
Input connector
7-Pin
LZ71-KR
