Panasonic EX-21 Series User manual
2
Contens
1. Cautions··························································································3
2. Part Description ················································································4
3. Mounting ·························································································6
3-1 Mounting the sensor ··············································································· 6
3-2 Mounting to sensor mounting bracket (Optional)··········································· 7
3-3 Mounting to mounting spacer (Optional) (Front sensing type) ·························· 8
3-4 Installation interval ················································································ 9
3-5
)
··13
4. I/O Circuit Diagram ·········································································· 14
5. Adjustment····················································································· 15
5-1
Beam alignment (Thru-beam type / )
··15
5-2
,
)
····························································16
6. Stability Indicator············································································· 18
7. Option··························································································· 19
7-1 Slit mask (Thru-beam type / ) ·············································19
) ································20
················································································· 21
9. Dimensions ···················································································· 24
3
1. Cautions
WARNING
Never use this product as a sensing device for personnel protection.
In case of using devices for personnel protection, use products which meet laws and
standards, such as OSHA, ANSI or IEC etc., for personnel protection applicable in
each region or country.
This product has been developed / produced for industrial use only.
The thin cable (0.1mm2) is used for this product. Thus, take care that if the cable is
pulled with excessive force, it may cause cable break.
Convergent reflective type EX-24
there is a reflective object (conveyor, etc.) in the background, since it may affect the
If a reflective object is present in the background, the sensing of narrow-view reflec-
tive type EX-28
If sensors are mounted close together and the ambient temperature is near the maxi-
mum rated value, provide for enough heat radiation / ventilation.
Make sure to carry out wiring in the power supply OFF condition.
Take care that wrong wiring will damage the sensor.
Verify that the supply voltage variation is within the rating.
If power is supplied from a commercial switching regulator, ensure that the frame ground
(F.G.) terminal of the power supply is connected to an actual ground.
In case noise generating equipment (switching regulator, inverter motor, etc.) is used in
the vicinity of this product, connect the frame ground (F.G.) terminal of the equipment to
an actual ground.
Do not run the wires together with high-voltage lines or power lines or put them in the
same raceway. This can cause malfunction due to induction.
Do not use during the initial transient time (50ms) after the power supply is switched
ON.
lamp, a high frequency lighting device or sunlight etc., as it may affect the sensing per-
formance.
Extension up to total 50m (each emitter and receiver of thru-beam type), or less, is pos-
sible with 0.3mm2, or more of conductor area cable. However,the extension of a power
supply line and the output line of less than 10m is acceptable in case using this product
as conforming to S-mark.
This sensor is suitable for indoor use only.
Do not use this sensor in places having excessive vapor, dust, etc., or where it may
come in contact with corrosive gas, etc.
Take care that the sensor does not come in contact with oil, grease, organic solvents
such as thinner, etc., strong acid, or alkaline.
Never disassemble or modify the sensor.
4
2. Part Description
<Emitter>
Beam-emitting
part
<Receiver>
Operation indicator (Orange)
Lights up when the output is
ON.
Stability indicator (Green)
Lights up under stable
light received condition
or stable dark condition.
Beam-receiving
part
Operation
mode switch Operation Description
Light-ON Light-ON mode is obtained when the operation mode switch is
turned fully clockwise (L side).
Dark-ON Dark-ON mode is obtained when the operation mode switch is
turned fully counterclockwise (D side).
Note: Use the accessory adjusting screwdriver to turn the operation mode switch slowly. Turning
with excessive strength will cause damage to the adjuster.
Operation mode
switch
<Receiver>
Operation indicator
(Orange)
Lights up when the
output is ON.
Stability indicator
(Green)
Lights up under
stable light received
condition or stable
dark condition.
Beam-receiving
part
<Emitter>
Sensitivity adjuster
Sensing range
increases when
turned clockwise.
Beam-
emitting
part
5
Stability indicator
(Green)
Lights up under
stable light received
condition or stable
dark condition.
Operation indicator
(Orange)
Lights up when the
output is ON.
Beam-receiving part
Beam-emitting part Sensitivity adjuster
Sensing range
increases when
turned clockwise.
Beam-emitting partBeam-receiving part
Stability indicator (Green)
Lights up under stable
light received condition
or stable dark condition.
Operation indicator (Orange)
Lights up when the output is
ON.
6
3. Mounting
3-1 Mounting the sensor
Mount using M3 screws. The tightening torque should be 0.5N·m or less.
M3 pan head screws
(Note)
Front sensing type
M3 screws
Side sensing type
7
3-2 Mounting to sensor mounting bracket (Optional)
Sensor mounting brackets (optional) are available. In case the sensor is mounted on a
sensor mounting bracket the tightening torque should be 0.5N·m or less.
Sensor mounting bracket for front sensing type
Sensor mounting bracket for side sensing type
MS-EX20-1
Material: Stainless steel (SUS304)
Two M3 (length 5mm) pan head screws
[stainless steel (SUS304)] are attached.
MS-EX20-3
Material: Stainless steel (SUS304)
Two M3 (length 5mm) pan head screws
[stainless steel (SUS304)] are attached.
MS-EX20-2
Material: Stainless steel (SUS304)
Two M3 (length 14mm) screws with washers
[stainless steel (SUS304)] are attached.
MS-EX20-4
Material: Stainless steel (SUS304)
Two M3 (length 14mm) screws with washers
[stainless steel (SUS304)] are attached.
MS-EX20-5
Two M3 (length 12mm) screws with washers [stainless steel (SUS304)],
one M3 (length 10mm) hexagon-socket-head bolt [stainless steel (SUS304)],
one M3 hexagon nut [stainless steel (SUS304)] are attached.
Material: Die-cast zinc alloy
Material: Nylon 6
Swivel: 360° rotation
Height adjustment: Approx. 15mm
8
3-3 Mounting to mounting spacer (Optional)
(Front sensing type)
MS-EX20-FS
Mounting method
1. Fit the mounting spacer on the sensor.
2. Align the mounting holes of the mounting spac-
er and the sensor and mount with M3 screws.
The tightening torque should be 0.5N·m or less.
Mounting spacer
MS-EX20-FS
(Optional)
M3 screws
9
3-4 Installation interval
This product does not incorporate auto interference prevention function. In case aligning
2 of this sensors closely, follow diagrams below. (typical)
In case using at sensing distance (L1) 1m, the op-
diagram.
The installation interval is
Approx. 59.2mm × 2 = approx. 118.4mm
Thus, install EX-21
away.
In case using at sensing distance (L2) 2m, the op-
diagram.
The installation interval is
Approx. 66.9mm × 2 = approx. 133.8mm
Thus, install EX-23
away.
EX-21
EX-23
EX-21
EX-23
EX-21
EX-23
Parallel deviation diagram (typical) of Thru-beam type EX-23
100
50 0 50 100
1
2(L2)
0
Setting distance L (mm)
CenterLeft Right
Parallel deviation diagram (typical) of Thru-beam type EX-21
100
50 0 50 100
0.5
1(L1)
0
Setting distance L (mm)
CenterLeft Right
10
In case using at sensing distance (L3) 200mm, the
left diagram.
The installation interval is
Approx. 9.7mm × 2 = approx. 19.4mm
Thus, install EX-29
away.
EX-29
EX-29
EX-29
20
10 0 10 20
100
200 (L3)
0
Setting distance L (mm)
CenterLeft Right
11
In case using at sensing distance (L4) 120mm, the
left diagram.
The installation interval is
Approx. 3.02mm × 2 = approx. 6.04mm
Thus, install EX-22
away.
In case using at sensing distance (L5) 19mm, the
left diagram.
The installation interval is
Approx. 1.92mm × 2 = approx. 3.84mm
Thus, install EX-24
away.
In case using at sensing distance (L6) 8mm, the op-
diagram.
The installation interval is
Approx. 0.11mm × 2 = approx. 0.22mm
Thus, install EX-26
away.
1
0.5 0 0.5 1
10
20
(L6)
0
15
5
Setting distance L (mm)
CenterLeft Right
4
2 0 2 4
20
40
(L5)
0
30
10
Setting distance L (mm)
CenterLeft Right
4
2 0 2 4
100
200
(L4)
0
150
50
Setting distance L (mm)
CenterLeft Right
12
In case using at sensing distance (L7) 70mm, the
left diagram.
The installation interval is
Approx. 0.74mm × 2 = approx. 1.48mm
Thus, install EX-28
away.
B
A
B
Model No. AB
EX-22 120mm Approx. 6.04mm or more
EX-24 19mm Approx. 3.84mm or more
EX-26 8mm Approx. 0.22mm or more
EX-28 70mm Approx. 1.48mm or more
4
2 0 2 4
100
200
(L7)
0
150
50
Setting distance L (mm)
CenterLeft Right
13
3-5
Mounting when detecting materials having a gloss
Please take care of the following points when detecting materials having a gloss with
EX-29
1.
2. Install at an angle of 10 to 30 degrees to the sensing object.
-
L
Sensing
object
10 to 30°
Glossy surface
14
4. I/O Circuit Diagram
Main circuit
(Brown) +V
(Blue) 0V
Users’ circuitInternal circuit
+
-
12 to 24V DC
±10%
Color code
(Black) Output
(Blue) 0V
Load
+
-
12 to 24V DC
±10%
Users’ circuitInternal circuit
Main circuit
(Brown) +V
50mA max.
Color code
(Black) Output
(Blue) 0V
Load
+
-
12 to 24V DC
±10%
Users’ circuitInternal circuit
Main circuit
(Brown) +V
50mA max.
Color code
15
5. Adjustment
5-1 Beam alignment
1. In case of EX-23
to the Light-ON mode position (L side).
2. Placing the emitter and the receiver face to face
along a straight line, move the emitter in the up,
down, left and right directions, in order to deter-
mine the range of the light received condition
with the help of the operation indicator (orange).
Then, set the emitter at the center of this range.
3. Similarly, adjust for up, down, left and right angu-
lar movement of the emitter.
4. Further, perform the angular adjustment for the
receiver also.
5. Check that the stability indicator (green) lights
up.
6. In case of EX-23
Light-ON or Dark-ON, as per your requirement,
with the operation mode switch.
1. Turn the sensitivity adjuster fully clockwise to the
maximum sensitivity position (MAX).
2.
along a straight line, move the reflector in the
up, down, left and right directions, in order to de-
termine the range of the light received condition
with the help of the operation indicator (orange).
3. Similarly, adjust for up, down, left and right angu-
4. Further, perform the angular adjustment for the
sensor also.
5. Check that the stability indicator (green) lights
up.
Sensing object
Receiver
Emitter
Operation
indicator
(Orange)
Sensing object
Sensor
Operation
indicator
(Orange)
Stability
indicator
(Green)
Sensor
Receiver
Emitter
Stability
indicator
(Green)
16
5-2 Sensitivity adjustment
Step
1. Turn the sensitivity adjuster fully counterclockwise to the
2. In the light received condition, turn the sensitivity adjuster
Awhere the sensor
enters the “Light” state operation.
3. In the dark condition, turn the sensitivity adjuster further
clockwise until the sensor enters the “Light” state opera-
tion and then bring it back to confirm point Bwhere the
sensor just returns to the “Dark” state operation.
If the sensor does not enter the “Light” state operation
even when the sensitivity adjuster is turned fully clock-
wise, the position is point B.
4. The position at the middle of points A and Bis the opti-
mum sensing position.
Notes: 1) Use the accessory adjusting screwdriver to turn the adjuster slowly. Turning with excessive strength
will damage the adjuster.
2) In case of using EX-22
range becomes extremely narrow.
Sensitivity
adjuster
A
A
B
B
A
Optimum
position
17
<Reference>
Light received condition Dark condition
Thru-beam type
Relation between output and indicators
In case of Light-ON In case of Dark-ON
Stability
indicator
(Green)
Operation
indicator
(Orange)
Output Sensing
condition Output
Operation
indicator
(Orange)
Stability
indicator
(Green)
Lights up
Lights up ON
Stable light
receiving OFF Turns OFF
Lights up
Turns OFF
Unstable light
receiving Turns OFF
Turns OFF OFF
Unstable dark
receiving ON Lights up
Lights up Stable dark
receiving Lights up
Emitter Receiver
Sensor Sensor
Sensing
object
Sensor Sensing
object Sensor
Emitter Receiver
Sensing
object
SensorSensor Sensing
object
18
6. Stability Indicator
The stability indicator (green) lights up when the incident light intensity has sufficient
margin with respect to the operation level.
Incident light intensity level is such that the stability indicator light up, stable sensing can
be done without the light received operation and the light interrupted operation being af-
fected by a change in ambient temperature or supply voltage.
Approx.
15%
Output operation level
Output operation
Operation of stability indicator
Light up
Light OFF
Light received
operation
00
100
Incident light intensity (%)
Setting distance
Incident light margin
Light interruption margin
Approx.
25%
Light up
Light interrupted
operation
19
7. Option
, the sensor can detect a small object.
However, the sensing range is reduced when the slit mask is mounted.
Type Model No. Slit size Sensing distance Min. sensing object
Slit mask Slit size
Slit on one side
Slit on both side
Slit on one side
Slit on both side
Round
slit mask
OS-EX20-05 EX21
ø0.5mm
200mm 40mm ø2.6mm ø0.5mm
OS-EX20E-05 EX-23 350mm 70mm ø3mm ø0.5mm
Rectan-
gular slit
mask
OX-EX20-05×3 EX-21
0.5 × 3mm
600mm 300mm ø2.6mm 0.5 × 3mm
OX-EX20E-05×3 EX-23 800mm 400mm ø3mm 0.5 × 3mm
The slit mask should be mounted on the product before mounting the sensor.
Mounting method
1.
2. Align the mounting holes of the slit mask and the sensor and mount with two M3 screws
[in case of EX-21
The tightening torque should be 0.5N·m or less.
Slit mask
OS-EX20-
(Optional)
Slit mask
OS-EX20E-
(Optional)
M3 screws
M3 screws
20
RF-200 EX-29
(we also offer them without refractor RF-200)
Desig-
nation
Model No.
Installation distance
Sensing
distance
Min. sens-
ing object
Sensor A B
RF-200
(Accessory)
EX-29 30mm 200mm
30 to 200mm
ø15mm
9.6mm × 25.25mm × 8mm
Thru-hole threads: ø3.2mm
RF-210
(Optional)
EX-29 50mm 400mm
50 to 400mm
ø30mm
33.3mm × 12.8mm × 11mm
Thru-hole threads: ø3.4mm
tape
RF-11
(Optional)
EX-29 70mm 200mm
70 to 200mm
ø15mm
30mm × 8mm × 0.7mm
Ambient temperature: -25 to +50ºC
Ambient humidity 35 to 85% RH
RF-12
(Optional)
EX-29 60mm 280mm
60 to 280mm
ø15mm
30mm × 25mm × 0.7mm
Ambient temperature: -25 to +50ºC
Ambient humidity 35 to 85% RH
Installation distance
(A)
Actual sensing range of the sensor
Sensor
Installation distance
(B)
in this range
This manual suits for next models
24
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