CX-20
Amplifier Built-in Compact
Photoelectric Sensor
General Purpose
Photoelectric Sensor
with Full Basic
Performance
160
SERIES
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
Marked
Conforming to EMC Directive
Compact Size
Two Sensors Mountable Together
Waterproof
Just 20mm in depth, 5mm shorter than
a conventional model.
CX-29䡺(retroreflective type), CX-22䡺
and CX-24䡺(diffuse reflective type)
incorporate an automatic interference
prevention function. Hence, two sensors
can be mounted close together.
CX-21䡺, CX-23䡺, CX-28䡺or CX-28IR䡺
do not have this function.
The sensor can be hosed down
because of its IP67 construction and
the non-corrosive stainless steel
mounting bracket.
Plug-in Connector Type Is A vailable
Plug-in connector type sensor, which
can be easily disconnected for
replacement, is available. In case a
problem occurs anyone can replace the
sensor in a minute.
Strong Light Beam
Insusceptible to Extraneous Light: CX-23䡺
CX-21䡺(thru-beam type) emits a
strong light beam which can pass
through 20 sheets of copier paper.
The sensor incorporates an infrared
LED that is strong against dust or dirt.
As the spread of the beam from the
CX-23䡺emitter is narrow, close
mounting of sensors is possible.
()
20mm
31mm
12mm
5mm shorter
20 sheets of copier paper
(at setting distance of 100mm)
CX-21䡺
CX-23䡺
CX-23䡺
Half the
span of CX-21䡺
Plug-in
connector type
CX-2䡺-J
M8 connector
(IEC conforming)
"9mm
Mating cable
CN-24E䡺-C2
(Cable length: 2m)
CN-24E䡺-C5
(Cable length: 5m)
Note: However, take care that if it is exposed to
water splashes during operation, it may
detect a water drop itself.
Thru-beam
Retroreflective
Diffuse reflective
Thru-beam
Retroreflective
Diffuse reflective
Narrow
beam
With
polarizing
filters
For transpar-
ent object
sensing
Long
sensing
range
Short
sensing
range
With
polarizing
filters
For transpar-
ent object
sensing
Long
sensing
range
Short
sensing
range
Narrow
beam
161
CX-20
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
Glass sheet
Cylindrical glass
Acrylic board
Styrol (Floppy case)
Food wrapping film
Cigarette case film
Vinyl sack
Pet bottle
Glass bin
䡺50mm t⳱1.0mm
"50mm ?⳱50mm
t⳱2.0mm
"100mm ?⳱50mm
t⳱2.3mm
䡺50mm t⳱1.5mm
䡺50mm t⳱1.2mm
䡺50mm t⳱10!m
䡺50mm t⳱20!m
䡺50mm t⳱30!m
"55mm
"70mm
"65mm
APPLICATIONS
Detecting contents in paper pouch Detecting shiny refrigerators Detecting rubber sheet
Detecting pet bottles
Sensor
Sensor
1
2
CX-21
CX-29
CX-22
CX-28IR
Reflector setting range: 300 to 500mm
with the RF-230 reflector at the optimum
condition (Note)
Each object should pass across the beam at the
center between the sensor and the reflector.
?: Length of cylindrical glasses
t : Thickness of sensing object
Note: The optimum condition is defined as the
condition in which the sensitivity level is set
such that the stability indicator just lights up
when the object is absent.
Sensing object
Sensing object size
Transparent objects detectable with CX-28IR䡺
(Typical examples)
ORDER GUIDE
NPN output type
PNP output type
10m
5m
0.1 to 3m
(Note 1)
50 to 1,000mm
(Note 1)
800mm
300mm
10m
5m
0.1 to 3m
(Note 1)
50 to 1,000mm
(Note 1)
800mm
300mm
Type Appearance Sensing range Model No. Sensing output
Emitting element
CX-21
CX-23
CX-29
CX-28IR
CX-22
CX-24
CX-21-PN
CX-23-PN
CX-29-PN
CX-28IR-PN
CX-22-PN
CX-24-PN
NPN open-collector
transistor
PNP open-collector
transistor
Infrared LED
Red LED
Infrared LED
Infrared LED
Red LED
Infrared LED
NOTE:
Mounting bracket is not supplied with the sensor. Please select
from the range of optional sensor mounting brackets (five types).
Note 1: The sensing range of the retroreflective type sensor is specified for the RF-230
reflector.
Further, the sensing range is the possible setting range for the reflector. The sensor
can detect an object less than 0.1m away (CX-28IR䡺: 50mm).
Sensor ReflectorReflector
Actual sensing range
of the sensor
Setting range
of the reflector
Reflector cannot
be placed in this
range
0.1m (CX-28IR䡺: 50mm)
3m (CX-28IR䡺: 1,000mm)
Red LED type for transparent object sensing
The red LED type for transparent object sensing, which features easy beam alignment, is available.
Model No.: CX-28, CX-28-PN (Sensing range: 50 to 500mm)
Plug-in connector type (Not available for the self-diagnosis output type)
Plug-in connector type is available. When ordering this type, add ‘-J’ to the model No.
(e.g.) Plug-in connector type of CX-21-PN is ‘CX-21-PN-J’.
Plug-in connector type of CX-29-Y is ‘CX-29-J-Y’.
Self-diagnosis output type (Available with NPN output type only. However,
not available for CX-23䡺,CX-28䡺, CX-28IR䡺, and plug-in connector type.)
The self-diagnosis output type is available. When ordering this type, add ‘S’ to the model No.
(e.g.) Self-diagnosis output type of CX-21 is ‘CX-21S’.
Package without reflector
CX-29䡺, CX-28䡺and CX-28IR䡺are available without the reflector RF-230. When ordering this type, add suffix ‘-Y’ to the model No.
(e.g.) Package without reflector of CX-29 is ‘CX-29-Y’.
CN-24E-C2
CN-24E-C5
CN-24EL-C2
CN-24EL-C5
CX-20
162
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
ORDER GUIDE
Type Model No. Description
Straight
Elbow
Length: 2m
Length: 5m
Length: 2m
Length: 5m
0.2mm24-core cabtyre cable
with connector on one end
Cable outer diameter:
"3.7mm
•CN-24E-C2, CN-24E-C5
•Mating cable (2 Nos. are required for the thru-beam type.) •CN-24EL-C2, CN-24EL-C5
OPTIONS
Designation Model No. Description
Round slit mask
For thru-beam
type sensor
only
Rectangular
slit mask
For thru-beam
type sensor
only
()
OS-CX-05
(Slit size "0.5mm)
OS-CX-1
(Slit size "1mm)
OS-CX-2
(Slit size "2mm)
OS-CX-05ⴒ6
(Slit size 0.5⳯6mm)
OS-CX-1ⴒ6
(Slit size 1⳯6mm)
OS-CX-2ⴒ6
(Slit size 2⳯6mm)
Slit on one side
Slit on both sides
Slit on one side
Slit on both sides
Slit on one side
Slit on both sides
Slit on one side
Slit on both sides
Slit on one side
Slit on both sides
Slit on one side
Slit on both sides
•Sensing range: 400mm [CX-21䡺]
300mm [CX-23䡺]
•Min. sensing object: "12mm
•Sensing range: 20mm
[CX-21䡺, CX-23䡺]
•Min. sensing object: "0.5mm
•Sensing range: 900mm [CX-21䡺]
600mm [CX-23䡺]
•Min. sensing object: "12mm
•Sensing range: 100mm
[CX-21䡺, CX-23䡺]
•Min. sensing object: "1mm
•Sensing range: 2m [CX-21䡺]
1.5m [CX-23䡺]
•Min. sensing object: "12mm
•Sensing range: 400mm
[CX-21䡺, CX-23䡺]
•Min. sensing object: "2mm
•Sensing range: 2m [CX-21䡺]
1.2m [CX-23䡺]
•Min. sensing object: "12mm
•Sensing range: 400mm
[CX-21䡺, CX-23䡺]
•Min. sensing object: 0.5⳯6mm
•Sensing range: 3m [CX-21䡺]
2m [CX-23䡺]
•Min. sensing object: "12mm
•Sensing range: 1m
[CX-21䡺, CX-23䡺]
•Min. sensing object: 1⳯6mm
•Sensing range: 5m [CX-21䡺]
3m [CX-23䡺]
•Min. sensing object: "12mm
•Sensing range: 2m
[CX-21䡺, CX-23䡺]
•Min. sensing object: 2⳯6mm
Round slit mask
Fitted on the front face of the sensor with one-
touch.
Rectangular slit mask
Fitted on the front face of the sensor with one-
touch.
Round slit mask
(Stainless steel)
)(
23mm
"3.7mm
"9mm
23.7mm
Foot angled mounting bracket
It can also be used for mounting RF-210.
(The thru-beam type sensor needs two brackets.)
Foot biangled mounting bracket
Flat mounting saves height.
It can also be used for mounting RF-210.
(The thru-beam type sensor needs two brackets.)
Protective mounting bracket
It protects the sensor from damage and maintains alignment.
(The thru-beam type sensor needs two brackets.)
Back biangled mounting bracket
Suitable for sensing from bottom of conveyors, etc.
(The thru-beam type sensor needs two brackets.)
Back angled mounting bracket
(The thru-beam type sensor needs two brackets.)
Basic assembly
Lateral arm assembly
Assembly for reflector
MS-RF23
RF-11 (Note 1)
RF-12
MS-CX2-1
MS-CX2-2
MS-CX2-4
MS-CX2-5
MS-CX-3
MS-AJ
MS-AJ-A
MS-AJ-M
•Ambient temperature:
ⳮ25 toⳭ50⬚C
•Ambient humidity:
35 to 85% RH
Notes: i) Keep the tape free from
stress. If it is pressed
too much, its capability
may deteriorate.
Notes: ii) Do not cut the tape.
It will deteriorate the
sensing performance.
For RF-220
MS-RF22
163
CX-20
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
It is useful for beam alignment of thru-beam type sensors.
The optimum receiver position is given by indicators, as
well as, an audio signal.
Universal sensor
mounting stand
(Note 3)
OPTIONS
Designation Model No. Description
Reflector
For retro-
reflective type
sensor only
Reflective tape
(For CX-29䡺only)
Sensor mounting
bracket
(Note 2)
Reflector
mounting
bracket
Notes: 1) RF-11 cannot be used with CX-28IR䡺.
Notes: 2) The plug-in connector type sensor does not allow use of some sensor
mounting brackets because of the protrusion of the connector.
Notes: 3) Refer to P.310lfor details of the universal sensor mounting stand.
Notes: 4) Refer to P.378lfor details of the sensor checker CHX-SC2.
Reflector
•RF-210 •RF-220
Reflective tape
•RF-11 •RF-12
Reflector mounting bracket
•MS-RF23 •MS-RF22
•MS-RF21-1
33.3mm 11mm
12.8
mm
35.3mm 8.3mm
42.3mm
30mm 0.7mm
8mm
25mm
0.7mm
30mm
Universal sensor mounting stand
•MS-AJ •MS-AJ-A
Sensor mounting bracket
•MS-CX2-1 •MS-CX2-2 •MS-CX2-4
•MS-AJ-M
•MS-CX2-5 •MS-CX-3
Elevation
angleⳲ45⬚
Height
adjustment:
150mm
approx.
45⬚
45⬚
Mounting holes
for M6 screw
Swivel:
360⬚ rotation
45°
45°
360°
With the lateral arm,
the sensor can sense
from above a
production line.
Mounting holes
for M6 screw
Height
adjustment:
150mm
approx.
rotation
angle
adjustment
Swivel:
360⬚ rotation
45°
45°
Elevation
angleⳲ45°
Height
adjustment:
150mm
approx.
Swivel:
360° rotation
Mounting holes
for M6 screw
•Sensing range:
0.1 to 0.5m [CX-29䡺]
•Sensing range:
0.1 to 0.7m [CX-29䡺]
0.15 to 0.4m [CX-28IR䡺]
()
CHX-SC2
Sensor checker
(Note 4)
Sensor checker
•Sensing range: 0.1 to 1m [CX-29䡺]
50 to 250mm [CX-28IR䡺]
•Min. sensing object: "30mm
•Sensing range: 0.1 to 1.5m [CX-29䡺]
50 to 500mm [CX-28IR䡺]
•Min. sensing object: "35mm
Protective mounting bracket for RF-210
It protects the reflector from damage and maintains alignment.
For RF-230
RF-210
RF-220
MS-RF21-1
Two M4 (length 10mm)
screws with washers
are attached.
Two M3 (length 8mm)
screws with washers
are attached.
Two M3 (length 12mm)
screws with washers
are attached.
Two M3 (length 12mm)
screws with washers
are attached.
Two M3 (length 12mm)
screws with washers
are attached.
Two M3 (length 14mm)
screws with washers
are attached.
Two M3 (length 12mm)
screws with washers
are attached.
Two M3 (length 12mm)
screws with washers
are attached.
LEVEL
POWER
CHX-SC2
Sensor checker
CX-21 CX-23 CX-29 CX-28IR CX-22 CX-24
CX-21-PN CX-23-PN CX-29-PN CX-28IR-PN CX-22-PN CX-24-PN
CX-20
164
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
Sensing range
Sensing object
Hysteresis
Repeatability
(perpendicular to sensing axis)
Supply voltage
NPN output
type
PNP output
type
Sensing output
Utilization category
Output operation
Short-circuit protection
Response time
Operation indicator
Stability indicator
Power indicator
Sensitivity adjuster
Automatic interference
prevention function
Pollution degree
Protection
Ambient temperature
Ambient humidity
Ambient illuminance
EMC
Voltage withstandability
Insulation resistance
Vibration resistance
Shock resistance
Emitting element
Material
Cable
Cable extension
Weight
Accessories
10m 5m 0.1 to 3m (Note 1)
50 to 1,000mm (Note 1)
800mm (Note 2) 300mm (Note 2)
"12mm or more opaque object (Note 3)
Opaque, translucent or transparent object
15% or less of operation distance
0.5mm or less 0.05mm or less 0.5mm or less 1mm or less
12 to 24V DCⳲ10% Ripple P-P 10% or less
Emitter: 35mA or less 30mA or less 35mA or less
Receiver: 25mA or less
Emitter: 35mA or less 35mA or less 40mA or less
Receiver: 30mA or less
<NPN output type>
NPN open-collector transistor
•Maximum sink current: 100mA
•
Applied voltage: 30V DC or less (between sensing output and 0V)
•Residual voltage: 1.5V or less (at 100mA sink current)
0.4V or less (at 16mA sink current)
DC-12 or DC-13
Switchable either Light-ON or Dark-ON
Incorporated
1ms or less
Red LED (lights up when the sensing output is ON)
Green LED (lights up under stable light received condition or stable dark condition)
Red LED
(lights up when the power is ON)
Continuously variable adjuster
3 (Industrial environment)
IP67 (IEC)
ⳮ25 toⳭ55°C (No dew condensation or icing allowed) (Note 4), Storage:ⳮ30 toⳭ70°C
35 to 85% RH, Storage: 35 to 85% RH
Sunlight: 10,000#x at the light-receiving face, Incandescent light: 3,000#x at the light-receiving face
Emission: EN50081-2, Immunity: EN50082-2
1,000V AC for one min. between all supply terminals connected together and enclosure
20MΩ, or more, with 250V DC megger between all supply terminals connected together and enclosure
10 to 500Hz frequency, 1.5mm amplitude in X, Y and Z directions for two hours each
500m/s2acceleration (50G approx.) in X, Y and Z directions for three times each
Infrared LED (modulated)
Red LED (modulated)
Infrared LED (modulated)
Enclosure: Polycarbonate, Lens: Polycarbonate, Indicator cover: Polycarbonate, Front cover: Polycarbonate (CX-29䡺: Acrylic)
0.2mm23-core (thru-beam type emitter: 2-core) oil resistant cabtyre cable, 2m long
Extension up to total 100m is possible with 0.3mm2, or more, cable (thru-beam type: both emitter and receiver).
Emitter: 45g approx., Receiver: 50g approx.
50g approx.
Adjusting screwdriver: 1 No. RF-230 (Reflector): 1 No. Adjusting screwdriver: 1 No.
Adjusting screwdriver: 1 No.
SPECIFICATIONS
Thru-beam Retroreflective Diffuse reflective
Narrow beam With polarizing
filters For transparent
object sensing Long sensing
range Short sensing
range
NPN output type
PNP output type
Type
Model No.
"50mm or more
opaque, translucent
or specular object
(Note 1)
"50mm or more
opaque, translucent
or transparent object
(Note 1)
Notes: 1) The sensing range and the sensing object of the retroreflective type sensor are specified
for the RF-230 reflector.
Further, the sensing range is the possible setting range for the reflector.
The sensor can detect an object less than 0.1m away (CX-28IR䡺: 50mm).
Notes: 2) The sensing range of the diffuse reflective type sensor is specified for white non-glossy
paper (200⳯200mm) as the object.
Notes: 3) If slit masks (optional) are fitted, an object of "0.5mm (using round slit mask) can be
detected.
Notes: 4) In case the sensor is to be used at an ambient temperature ofⳮ15⬚C, or less, please
contact our office.
Sensor ReflectorReflector
Actual sensing range
of the sensor
Setting range
of the reflector
Reflector cannot
be placed in this
range
0.1m (CX-28IR䡺: 50mm)
3m (CX-28IR䡺: 1,000mm)
<PNP output type>
PNP open-collector transistor
•Maximum source current: 100mA
•
Applied voltage: 30V DC or less (between sensing output and
Ⳮ
V)
•Residual voltage: 1.5V or less (at 100mA source current)
0.4V or less (at 16mA source current)
Item
Current
consumption
Environmental resistance
Incorporated
Two units of sensors
can be mounted closely.
() ( )
Incorporated
Two units of sensors can be mounted
closely.
165
CX-20
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
I/O CIRCUIT AND WIRING DIAGRAMS
NPN output type
I/O circuit diagram
SENSING CHARACTERISTICS (TYPICAL)
All models
Correlation between setting distance and excess gain
Ⳮ
ⳮ12 to 24V DC
Ⳳ10%
D
Tr1
80mA max.
Tr2
ZD1
ZD2 100mA max.
Users’ circuitInternal circuit
(Brown/1)ⳭV
(Black/4)
Sensing output (Note 1)
Color code/
Connector pin No. of the plug-in connector type
(Blue/3) 0V
(Orange/2)
Self-diagnosis output (Note 2, 3)
Load
Sensor circuit
Load
Wiring diagram
Connector pin position
(Plug-in connector type)
Symbols ... D: Reverse supply polarity protection diode
ZD1, ZD2: Surge absorption zener diode
Tr1, Tr2: NPN output transistor
Symbols ... D: Reverse supply polarity protection diode
ZD: Surge absorption zener diode
Tr : PNP output transistor
PNP output type
I/O circuit diagram
D
Tr 100mA max.
ZD
(Brown/1) ⳭV
(Black/4) Sensing
output (Note 1)
(Blue/3) 0V
12 to 24V DC
Ⳳ10%
Ⳮ
ⳮ
Color code/
Connector pin No. of the plug-in connector type
Users’ circuitInternal circuit
Load
Sensor circuit
Wiring diagram
Brown
Black (Note)
Blue
12 to 24V DC
Ⳳ10%
Load
Ⳮ
ⳮ
Notes: 1) The emitter of the thru-beam type sensor does not incorporate
the sensing output.
Notes: 2) Only CX-䡺Sincorporates the self-diagnosis output.
Notes: 3) The plug-in connector type sensor does not incorporate the
self-diagnosis output. When connecting the mating cable, the
white wire is not connected.
Notes: 1) The emitter of the thru-beam type sensor does not incorporate
the sensing output.
Notes: 2) When connecting the mating cable to the plug-in connector type
sensor, the white wire is not connected.
2
Not connected 4
Sensing output (Note 1)
1
ⳭV3
0V
Connector pin position
(Plug-in connector type)
2
Not connected 4
Sensing output (Note 1)
1
ⳭV3
0V
0 5 15 20 25
1
10
5
100
10
Excess gain
50
Setting distance L (m)
CX-23䡺
CX-21䡺
01 345
1
10
5
100
2
Excess gain
50
Setting distance L (m)
CX-24䡺
CX-22䡺
CX-29䡺
CX-28IR䡺
Ⳮ
ⳮ12 to 24V DC
Ⳳ10%
Load
Load
Brown
Black
Orange
Blue
CX-20
166
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
SENSING CHARACTERISTICS (TYPICAL)
CX-21䡺Thru-beam type
Parallel deviation Angular deviation Parallel deviation with round
slit masks ("0.5mm) Parallel deviation with round
slit masks ("1mm)
0
5
Left Right
Center
Operating point ?(mm)
2,000 1,000 0 1,000 2,000
10
#L
Receiver
Emitter
Setting distance L (m)
Left Right
Center
Operating angle $( ° )
40 20 0 20 40
0
5
10
$L
Receiver
Emitter
Setting distance L (m)
Left Right
Center
Operating point ?(mm)
40 20 0 20 40
0
200
400
Receiver
Emitter
Slit on
one side
Slit on
both sides
#L
Setting distance L (mm)
Left Right
Center
Operating point ?(mm)
100 50 0 50 100
0
400
800
Receiver
Emitter
Slit on
one side
#L
Setting distance L (mm)
Slit on
both sides
Parallel deviation with round
slit masks ("2mm)
Parallel deviation with rectangular
slit masks (0.5ⴒ6mm)
Parallel deviation with rectangular
slit masks (1ⴒ6mm) Parallel deviation with rectangular
slit masks (2ⴒ6mm)
Left Right
Center
Operating point ?(mm)
200 100 0 100 200
0
1
2
Receiver
Emitter
Slit on
one side
#L
Setting distance L (m)
Slit on
both sides
Left Right
Center
Operating point ?(mm)
200 100 0 100 200
0
1
2
Receiver
Emitter
Slit on
one side
#L
Setting distance L (m)
Slit on
both sides
0
1
2
3
400 200 0 200 400
Left Right
Center
Operating point ?(mm)
4
Receiver
Emitter
Slit on
one side
#L
Setting distance L (m)
Slit on
both sides
0
2
4
6
1,000 500 0 500 1,000
Left Right
Center
Operating point ?(mm)
8
Receiver
Emitter
Slit on
one side
#L
Setting distance L (m)
Slit on
both sides
CX-23䡺Thru-beam type
Parallel deviation Angular deviation Parallel deviation with round
slit masks ("0.5mm) Parallel deviation with round
slit masks ("1mm)
0
2
4
6
8
400 200 0 200 400
Receiver
Emitter Emitter
#L
Horizontal
direction
Receiver
Vertical
direction
Setting distance L (m)
(Down) Left Right (Up)
Center
Operating point ?(mm)
#L
Horizontal
direction
Vertical
direction
(Down) Left Right (Up)
Center
0
2
4
6
8
40 20 0 20 40
Operating angle $( ° )
Receiver
Emitter
Setting distance L (m)
$L
Setting distance L (mm)
Left Right
Center
Operating point ?(mm)
0
100
200
300
400
20 10 0 10 20
Receiver
Emitter
Slit on
one side
#L
Slit on
both sides
Setting distance L (mm)
Left Right
Center
Operating point ?(mm)
0
200
400
600
800
40 20 0 20 40
Receiver
Emitter
Slit on
one side
#L
Slit on
both sides
Parallel deviation with round
slit masks ("2mm)
Parallel deviation with rectangular
slit masks (0.5ⴒ6mm) Parallel deviation with rectangular
slit masks (1ⴒ6mm) Parallel deviation with rectangular
slit masks (2ⴒ6mm)
Left Right
Center
Operating point ?(mm)
0
0.5
1
1.5
2
100 50 0 50 100
Receiver
Emitter
Slit on
one side
Setting distance L (m)
#L
Slit on
both sides
Center
Operating point ?(mm)
0
0.5
1
1.5
2
100 50 0 50 100
(Down) Left Right (Up)
Slit on
one side
Horizontal
direction
Receiver
Emitter Emitter
Slit on
both sides
Horizontal
direction
Slit on
one side
Vertical
direction
Receiver
Slit on
both sides
Vertical
direction
#L
Setting distance L (m)
#L
Horizontal
direction
Vertical
direction
(Down) Left Right (Up)
Center
Operating point ?(mm)
100 50 0 50 100
0
1
2Slit on
one side
Horizontal
direction
Receiver
Emitter Emitter
Slit on
both sides
Vertical
direction
Slit on
both sides
Horizontal
direction
Slit on
one side
Vertical
direction
Receiver
#L
Setting distance L (m)
#L
Horizontal
direction
Vertical
direction
Center
Operating point ?(mm)
0
1
2
3
4
200 100 0 100 200
(Down) Left Right (Up)
Receiver
Emitter Emitter
Receiver
Slit on
one side
Horizontal
direction
Slit on
both sides
Vertical
direction
Slit on
both sides
Horizontal
direction
Slit on
one side
Vertical
direction
#L
Setting distance L (m)
Horizontal
direction
Vertical
direction
#L
167
CX-20
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
As the sensing object size becomes smaller
than the standard size (white non-glossy paper
200⳯200mm), the sensing range shortens, as
shown in the left graph.
For plotting the left graph, the sensitivity
has been set such that a 200⳯200mm
white non-glossy paper is just detectable at
a distance of 800mm.
()
CX-29䡺Retroreflective type CX-28IR䡺Retroreflective type
Parallel deviation Angular deviation Parallel deviation Angular deviation
Left Right
Center
Operating point ?(mm)
0
1
2
3
4
100 50 0 50 100
#L
Sensor
Reflector
(RF-230)
Setting distance L (m)
Left Right
Center
Operating angle $( ° )
0
1
2
3
4
40 20 0 20 40
$L L
$
Sensor
Sensor
Sensor
angular
deviation Reflector (RF-230)
Reflector
angular
deviation
Reflector
angular
deviation
Sensor
angular
deviation
Reflector (RF-230)
Setting distance L (m)
Left Right
Center
Operating point ?(mm)
100 50 0 50 100
0
500
1,000
Sensor
Reflector
(RF-230)
#L
Setting distance L (mm)
Left Right
Center
Operating angle $( ⬚ )
40 20 0 20 40
0
500
1,000
Sensor
Sensor
Sensor
angular
deviation Reflector
(RF-230)
Reflector
angular
deviation
Reflector
(RF-230)
Sensor
angular
deviation
Reflector
angular
deviation
Setting distance L (mm)
$LL
$
SENSING CHARACTERISTICS (TYPICAL)
PRECAUTIONS FOR PROPER USE Refer to P.820lfor general precautions.
CX-22䡺Diffuse reflective type
Sensing field Correlation between sensing object size and sensing range
Left Right
Center
Operating point ?(mm)
40 20 0 20 40
0
500
1,000
Setting distance L (mm)
#L
Sensor
200⳯200mm
White non-
glossy paper
50 100 150 200
400
800
0
Sensing range L (mm)
White non-glossy paper
side length a (mm)
Sensor
L
a⳯amm
White non-
glossy paper
As the sensing object size becomes smaller
than the standard size (white non-glossy paper
200⳯200mm), the sensing range shortens, as
shown in the left graph.
For plotting the left graph, the sensitivity
has been set such that a 200⳯200mm
white non-glossy paper is just detectable at
a distance of 300mm.
()
CX-24䡺Diffuse reflective type
Sensing field Correlation between sensing object size and sensing range
Left Right
Center
Operating point ?(mm)
0
100
200
300
400
20 10 0 10 20
#L
Sensor
200⳯200mm
White non-
glossy paper
Setting distance L (mm)
100
200
300
400
50 100 150 200
0
Sensing range L (mm)
White non-glossy paper
side length a (mm)
Sensor
L
a⳯amm
White non-
glossy paper
This product is not a safety sensor. Its use is not
intended or designed to protect life and prevent body
injury or property damage from dangerous parts of
machinery. It is a normal object detection sensor.
Mounting
•The tightening
torque should be
0.5N䡠m or less.
Operation mode switch
Light-ON mode is obtained when the switch is turned
fully counterclockwise.
Dark-ON mode is obtained when the switch is turned
fully clockwise.
DL
DL
Others
•Do not use during the initial transient time (50ms) after the
power supply is switched on.
•
When connecting the mating cable to the plug-in connector
type sensor, the tightening torque should be 0.4N䡠m or less.
MS-CX2-1
(Optional)
M3 (length 12mm)
screw with washers
CX-20
168
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
PRECAUTIONS FOR PROPER USE Refer to P.820lfor general precautions.
DIMENSIONS (Unit: mm)
Retroreflective type sensor with polarizing filters
•If a shiny object is covered or wrapped with a transparent
film, such as those described below, the retroreflective
type sensor with polarizing filters may not be able to
detect it.
In that case, follow the steps given below.
•Can wrapped by clear film
•Aluminum sheet covered by plastic film
•Gold or silver color (glossy) label or wrapping paper
•Tilt the sensor with respect to the sensing object while fitting.
•Reduce the sensitivity.
•Increase the distance between the sensor and the sensing
object.
Self-diagnosis function (Self-diagnosis output type only)
•The sensor diagnoses the incident light intensity, and if it
is reduced due to dirt or dust, or beam misalignment, an
output is generated.
Stable light received level
Sensing output
threshold level
Stable dark level
Sensing condition
Stability indicator
Self-diagnosis output
ON (Lights up)
OFF (Lights off)
Lights up
Lights off
OFF
ON
Insufficient
beam intensity Insufficient
beam interruption
Sensing output
(operation indicator )
(in the Light-ON mode)
1
123
1The self-diagnosis output transistor stays in the ‘OFF’ state during stable
sensing.
2When the sensing output changes, if the incident light intensity does not
reach the stable light received level or the stable dark level, the self-
diagnosis output becomes ON.
Further, the self-diagnosis output changes state when the sensing output
changes from Light to Dark state. (It is not affected by the operation
mode switch.)
3In case of insufficient beam interruption, there will be a time lag before
the self-diagnosis output turns ON.
Retroreflective type sensor for sensing transparent objects
•Optimum sensing is possible when the position of the
transparent sensing object is set at the center of the
sensor and the reflector.
If the sensing position is set near the sensor or the
reflector, the sensing may be unstable. In this case, set
the sensing position at the center of the sensor and the
reflector.
Sensor Reflector
Transparent sensing object
•When the sensor detects an uneven plastic receptacle or
glass bin, the received light intensity may differ with the
sensing position or direction. Adjust the sensitivity after
confirming the stable sensing condition by turning the
sensing object, etc.
•If the object is a transparent cylinder, feed it in a position
as shown in Figure A. The sensor may fail to detect an
object fed in a position as shown in Figure B.
Reflector
Sensor
Fig. A
Reflector
Sensor
Fig. B
CX-2䡺Sensor CX-2䡺-J Sensor
2-M3⳯0.5
thru-hole threads 20
3
3
1.7
31 15.5 25
"3.7 cable 2m long
12
Center of
sensing
Operation mode switch (Note 1)
Operation indicator (Red) (Note 2)
Stability indicator (Green) (Note 1)
Sensitivity adjuster (Note 1)
22
16
3
3
1.7
31
40.534.5
15.5
25
12
2-M3⳯0.5
thru-hole threads
"11 M8 connector
Operation indicator (Red) (Note 2)
Stability indicator (Green) (Note 1)
Center of
sensing
Operation mode switch (Note 1)
Sensitivity adjuster (Note 1)
Notes: 1) Not incorporated on the emitter of the thru-beam type sensor.
Notes: 2) It is the power indicator (red) on the emitter of the thru-beam type
sensor.
Notes: 1) Not incorporated on the emitter of the thru-beam type sensor.
Notes: 2) It is the power indicator (red) on the emitter of the thru-beam type
sensor.
Example of sensing objects
Steps
169
CX-20
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
DIMENSIONS (Unit: mm)
RF-230
Reflector (Accessory for the retroreflective type sensor)
RF-220 Reflector (Optional)
50.3
49.3
59.3
(30)
40
5
8.3
3.3
10
2-"4.6
mounting
holes
35.3
42.334.3
8
25
4
8.3
3.3
2-"3.6
mounting
holes
(21)
RF-210 Reflector (Optional) RF-11 Reflective tape (Optional)
10
25
3.2
33.3
12.8
11
Reflector
Base
M3 nut mounting holes
(for mounting at the back)
2-"3.4 thru-holes
(for mounting at the side)
(for mounting at the back)
2-"3.4 holes 6 deep
(for mounting at the side)
2-M3 nut mounting holes
RF-12 Reflective tape (Optional)
30 0.7
25
Adhesive tape
Effective
reflecting surface
(28)
(23)
8
0.7
30
Adhesive tape
Effective
reflecting surface
(28)
(6)
Material: Acrylic (Reflector)
ABS (Base)
Material: Acrylic (Reflector)
ABS (Base)
Two M3 (length 8mm)
screws with washers and
two nuts are attached.
Material: Acrylic (Reflector)
ABS (Base)
Material: Acrylic
Material: Acrylic
CX-20
170
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
MS-CX2-1 Sensor mounting bracket (Optional)
DIMENSIONS (Unit: mm)
Assembly dimensions
Mounting drawing with CX-2䡺
MS-CX2-2 Sensor mounting bracket (Optional)
55
15.8
t2
36
7.8
7
14
7
15.5
23
10
5
4.5
4.5
25
22
14°
8-"3.4 holes
7.8
4.5
4
14
12
R12
Assembly dimensions
Mounting drawing with CX-2䡺
MS-CX2-4 Sensor mounting bracket (Optional)
Assembly dimensions
Mounting drawing
with CX-2䡺
Material: Stainless steel (SUS304)
Two M3 (length 12mm) screws
with washers are attached.
Material: Stainless steel (SUS304)
Two M3 (length 12mm) screws
with washers are attached.
Material: Stainless steel (SUS304)
Two M3 (length 14mm) screws
with washers are attached.
22
15
20
10
3.2
25
42.5 R25
7⬚
3.4
12
3
3.4
8
14 14⬚
t 1.2
5
R12
2-"3.4 holes
(for RF-210)
12.5
42.5
22
0.5
25
7⬚
12.5 t 1.2
31
9.5
25
12
14 26
3.4
3.4
5
3
14⬚
12
R12
Center of sensing
28
15.8
55
7.8
36
14
22
25
4.5
4.5
12 5
15.5
7
14⬚
4.5 7.8
4
12R
t 2
(3.6)
Center of sensing
SENSOR
SENSOR
25
4
7⬚18
t 2.5 25
29
19
0.5
39"
7
55
"
20⬚
40⬚
Center of sensing
SENSOR
SENSOR
6.2
R9.5
29
19
5.5
5.5
"55
"39
6
7
40⬚20⬚
3.2 3.2
25
19 4
25
25
7⬚
14⬚18
46
t 2.5
"25
R25
171
CX-20
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
MS-CX2-5 Sensor mounting bracket (Optional)
DIMENSIONS (Unit: mm)
Assembly dimensions
Mounting drawing
with CX-2䡺
MS-CX-3 Sensor mounting bracket (Optional)
Assembly dimensions
Mounting drawing with CX-2䡺
MS-RF21-1 Reflector mounting bracket for RF-210 (Optional)
23
50
5.5
16
10
3.5
3.2
12.5
R7.5
25
46
t1.2
13
"36
"25
20⬚
30⬚
Assembly dimensions
23
50
5.5
10
12.8
13
46
25
"36
20⬚
30⬚
Material: Stainless steel (SUS304)
Two M3 (length 12mm) screws
with washers are attached.
Material: Stainless steel (SUS304)
Two M3 (length 12mm) screws
with washers are attached.
Material: Stainless steel (SUS304)
Two M3 (length 12mm) screws
with washers are attached.
8
5
7.9
18.9
3.2
3.2
25
19
20
737
3.5
6.5
45
19
5
7⬚
15 t1.5
R25
R19
21
27
5
7.9
15 t 1.5
18.9
7
25
20
37
6.5
45
5
7⬚R25
Center of sensing
t 1.2
30
20.5 3.5
3.2
3.4
10⬚
R25 5
3525
3.2
R25 10⬚5
15
14
83.4
6
8.5
18
6
20
0.5
30
3.5
5
25 35
26
14
12
31
3.4 814
6
69
8.5
18
t 1.2
Center of sensing
CX-20
172
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
MS-RF22 Reflector mounting bracket for RF-220 (Optional)
DIMENSIONS (Unit: mm)
25
4.5
10
11
25
35
4
16
10
6
8
44
20
t1.6
8-M3⳯0.5 thru-hole threads
Assembly dimensions
4.5 25
10 28.3
19.3
8.3
35.3
44.3
6
34.3
8
4
t1.6
(27) (21)
MS-RF23 Reflector mounting bracket for RF-230 (Optional)
40 4.5 10
11
50
40 5
16
15
18
7
26
12
35 61
20
t2
(3) (28)
(3)
8-M4⳯0.7 thru-hole threads
Assembly dimensions
40
4.5
28.3
19.3
8.3
50.3
61.3
7
49.3
5
40
t 2
10
10
(30)
(37)
Material: Cold rolled carbon steel (SPCC)
(Uni-chrome plated)
Two M3 (length 8mm) screws with washers are attached.
Material: Cold rolled carbon steel (SPCC)
(Uni-chrome plated)
Two M4 (length 10mm) screws with washers are attached.
173
CX-20
PHOTOELECTRIC SENSORS
FX-D1/A1/M1
Fiber Sensors
FX-13
FX-11A
FZ-10
CX-20
Amplifier Built-in TypeCX-30
CX-RVM5/D100/ND300R
EX-10
EX-20
420
1
20
1
20
2533 3.2
17.8
12
11.8
(42.5)
(214)
(145)(Note)
16
26
16 15
32
46
32
27
31
28
45⬚
45⬚
t 2
6
431
20
Attachment
(Nylon 6)
M4 hexagon-
socket-head
bolt
2-"7 mounting holes
2-"7 mounting holes
2-"3.2 mounting
holes
2-3.2⳯4.2 oblong holes
"10 pipe
[Stainless steel (SUS304)]
Sensor mounting bracket
[Stainless steel (SUS304)]
Cable guide
(POM)
Base
(Nylon 6)
4.2
Note: The dimensions in the brackets indicate the adjustable range of the
movable part.
Assembly dimensions with CX-20 series
(Mounting part only)
Assembly dimensions with RF-210 (Reflector)
(Mounting part only)
20
11.8
33 25
2028
27
18
24
45⬚
45⬚
t 2
6
Center of
sensing
2-M3
(length 14mm)
screws with
washers 4.2
11.8 20
18.4
24.8
45⬚
45⬚
t 2
6
2533.3
31.8 20
33
2-M3
(length 14mm)
screws with
washers
4.2
DIMENSIONS (Unit: mm)
MS-AJ-M Assembly for reflector (Optional)
MS-AJ Basic assembly (Optional)
Two M3 (length 14mm) screws with washers,
two M3 (length 16mm) screws with washers,
two M3 (length 18mm) screws with washers,
one auxiliary mounting plate for EQ-20
series, and one auxiliary mounting plate for
EX-40 series are attached.
MS-AJ-A Lateral arm assembly (Optional)
12
2540
11.8
(214)
(136.5)(Note)
( 51)
16
26
32
46
50
6
431
28
45⬚
45⬚
t 2
4.2
20
M4 hexagon-
socket-head bolt
Cable guide
(POM)
Attachment
(Nylon 6)
"10 pipe
[Stainless steel (SUS304)]
Base
(Nylon 6)
2-"7 mounting
holes
20
Note: The dimensions in the brackets indicate the adjustable range of the
movable part.
Notes: 1) The dimensions in the brackets indicate the adjustable range of
the movable part.
Notes: 2) Refer to MS-AJ (basic assembly) for the assembly diagram
with the base, sensor mounting bracket, sensor or reflector.
Assembly dimensions with RF-220 (Reflector)
(Mounting part only)
Assembly dimensions with RF-230 (Reflector)
(Mounting part only)
35.3
28
45.3
t 2
12
28
45⬚
45⬚
36.3
4.2
38
11.8 55.3
6
50
20
20
2-M3 (length 8mm)
screws with washers
M4 hexagon-socket-
head bolt
36.3
28
45⬚
45⬚
t 2
4.2
61.3
37
47
11.8 71.3
6
50.3
20
20
2-M4 (length 8mm)
screws with washers
M4 hexagon-socket-
head bolt
28.45
12
16.5
(145)
(Note 1)
(42.5)
(208.5)
(134)(Note 1) (33)
210 (16.5)
33
6
(214)
2-"7
mounting
holes
Base (Note 2)
(Nylon 6)
2-"3.2
mounting
holes
Arm joint
(Nylon 6)
"10 pipe
[Stainless steel (SUS304)]
"10 pipe
[Stainless steel (SUS304)]
2-3.2⳯4.2
oblong holes
Cable guide
(POM)
Sensor mounting bracket
[Stainless steel (SUS304)]
(Note 2)
4
4.2
32
46 31
Two M3 (length 8mm) screws
with washers, and two M4
(length 8mm) screws with
washers are attached.
Two M3 (length 14mm) screws with washers,
two M3 (length 16mm) screws with washers,
two M3 (length 18mm) screws with washers,
one auxiliary mounting plate for EQ-20
series and one auxiliary mounting plate for
EX-40 series are attached.