Datasheet

218
EX-20
I/O CIRCUIT AND WIRING DIAGRAMS
Load
Brown
Black (Note)
Blue
Color code


12 to 24 V DC
10 %
Load
Brown
Black (Note)
Blue
Color code


12 to 24 V DC
10 %
I/O circuit diagram
Note: The emitter of the thru-beam type sensor does not incorporate the output.
Note: The emitter of the thru-beam type sensor does not
incorporate the black wire.
Note: The emitter of the thru-beam type sensor does not
incorporate the black wire.
Wiring diagram
Symbols ... D : Reverse supply polarity protection diode
Z
D : Surge absorption zener diode
Tr : NPN output transistor
NPN output type
Users’ circuitInternal circuit
D
Z
D
Tr
(Brown)
V
(Black) Output (Note)
(Blue) 0 V
Color code
50 mA max.
Load
Sensor circuit


12 to 24 V DC
10 %
Note: The emitter of the thru-beam type sensor does not incorporate the output.
Symbols ... D : Reverse supply polarity protection diode
Z
D : Surge absorption zener diode
Tr : PNP output transistor
I/O circuit diagram Wiring diagram
PNP output type
Users’ circuitInternal circuit
D
Tr
(Brown)
V
(Black) Output (Note)
(Blue) 0 V
Color code
50 mA max.
Load
Sensor circuit


12 to 24 V DC
10 %
Z
D
SENSING CHARACTERISTICS (TYPICAL)
Parallel deviation
Angular deviation
Parallel deviation with round
slit masks (
" 0.5 mm " 0.020 in)
Parallel deviation with rectangular slit
masks (0.53 mm 0.0200.118 in)
100 50 0 50 100
3.937 1.969 1.969 3.937
0
0.5
1
1.640
3.281
#
L
Receiver
Emitter
Setting distance L (m ft)
Operating point ? (mm in)
CenterLeft Right
40 20 0 20 40
0
0.5
1
$
L
CenterLeft Right
Operating angle
$
( ° )
Receiver
Emitter
1.640
3.281
Setting distance L (m ft)
Correlation between setting distance and excess gain
01 345
10
5
100
2
3.281 9.843 13.123 16.4046.562
Excess gain
50
Setting distance L (m ft)
EX-21
EX-23
1
0 50 150 200 250
1
10
5
100
100
50
EX-22
1.969 5.906 7.874 9.8433.937
Excess gain
Setting distance L (mm in)
0 200 600 800 1,000
10
5
100
400
50
EX-29
1
10
7.874 23.622 31.496 39.37015.748
Excess gain
Setting distance L (mm in)
20 10 0 10 20
0
100
200
#
L
Receiver
Emitter
Slit on one
side
Slit on both
sides
0.787 0.394 0.394 0.787
3.937
7.874
Setting distance L (mm in)
Operating point ? (mm in)
CenterLeft Right
40 20 0 20 40
0
200
400
600
800
#
L
Receiver
Emitter
Slit on one
side
Slit on both
sides
31.496
23.622
15.748
7.874
1.575 0.787 0.787 1.575
Setting distance L (mm in)
Operating point ? (mm in)
CenterLeft Right
EX-21
Thru-beam type
EX-21 EX-23
EX-29 EX-22
08/2005