Panasonic EX-31A Manuale utente
2013.03 panasonic.net/id/pidsx/global
Amplifier Built-in Type Threaded
Miniature Photoelectric Sensor
EX-30 Series
USER’S MANUAL
WUME-EX30-3
2
Contents
1. Cautions··························································································3
2. Part Description ················································································4
3. Mounting ·························································································5
3-1 Mounting the sensor ··············································································· 5
3-2 Installation interval ················································································· 6
4. I/O Circuit Diagram ············································································8
5. Adjustment·······················································································9
5-1 Beam alignment (Thru-beam type EX-31□ / EX-33□)····································· 9
5-2
Sensitivity adjustment (Thru-beam type EX-33□, Diffuse reective type EX-32□)
··10
6. Stability Indicator············································································· 12
7. Option··························································································· 13
7-1 Beam Slit Mask (Thru-beam type EX-31□ / EX-33□)·····································13
8. Specications ················································································· 14
9. Dimensions ···················································································· 15
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.
● Extension up to total 50m (emitter and receiver each of thru-beam type) is possible with
a 0.3mm2, or more of conductor cross-section area cable. However, in order to reduce
noise, make the wiring as short as possible.
●Make sure that stress by forcible bend or pulling is not applied directly to the sensor
cable joint.
● Make sure to carry out wiring in the power supply OFF condition.
● Take care that wrong wiring will damage the sensor.
● 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.
● 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 use during the initial transient time (50ms) after the power supply is switched
ON.
●Make sure to use an isolation transformer for the DC power supply. If an auto-transformer
(single winding transformer) is used, this product or the power supply may get damaged.
●In case a surge is generated from power supply, take countermeasures such as con-
necting a surge absorber to the origin of the surge.
● Take care that the sensor is not directly exposed to uorescent lamp from a rapid-starter
lamp, a high frequency lighting device or sunlight etc., as it may affect the sensing per-
formance.
● 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 product does not come in contact with oil, grease, organic solvents
such as thinner, etc., strong acid or alkaline.
● In case of using the sensor at a place where static electricity is generated, use a metal
mounting plate. Also, ensure to ground the mounting plate.
4
2. Part Description
Thru-beam type EX-31□
Thru-beam type EX-33□
Diffuse reective EX-32□
<Receiver>
<Emitter / Receiver>
Beam axis
<Emitter>
Operation indicator
(Orange)
Output ON: lights up
Stability indicator
(Green)
Stable light re-
ceived condition
or stable dark
condition: light up
Operation mode
switch Operation Description
Light-ON
The operation mode becomes Light-ON
when the operation mode switch turned
clockwise (L side) until it stops.
Dark-ON
The operation mode becomes Dark-ON
when the operation mode switch turned
counter-clockwise (D side) until it stops
Note: Use the flathead screwdriver (please arrange separately) to turn the
operation mode switch slowly. Turning with excessive strength will
cause damage to the operation mode switch.
<Emitter / Receiver> <Emitter>
Sensitivity adjuster
Sensing range becomes
longer when turned
clockwise
<Receiver>
Operation mode
switch
Beam axis
Operation indicator
(Orange)
Output ON: Lights up
Stability indicator
(Green)
Stable light re-
ceived condition
or stable dark con-
dition: lights up
Beam-receiving part
Beam-
emitting
part
Operation indicator
(Orange)
Output ON: Lights up
Stability indicator
(Green)
Stable light
received condi-
tion or stable dark
condition: Lights
up
Sensitivity adjuster
Sensing range becomes
longer when turned
clockwise
5
3. Mounting
3-1 Mounting the sensor
●Mount the sensor on a mounting plate 3mm or less thick and use the enclosed nut and
toothed lock washer for mounting.
● When the nut is tightened, hold the the sensor with hand or a spanner etc. and the tight-
ening torque should be 0.6N·m or less. (diffuse reective type EX-32□: 1N·m or less)
Do not tighten the sensor itself.
Spanner
Mounting plate
(Thick: 3mm or less)
6
3-2 Installation interval
● This product does not incorporate auto interference prevention function. In case aligning
2 of this sensors closely, follow diagrams below. (typical)
●Find out the operating point ℓ1 on the parallel deviation diagram for the setting distance L.
Separate sensors by 2 × ℓ or more.
<Installation interval for EX-31□>
In case using at sensing distance (L1) 500mm, the op-
eration point (ℓ1) is approx. 50.3mm according to left
diagram.
The installation interval is
Approx. 50.3mm × 2 = approx. 100.6mm
Thus, install EX-31□ to approx. 100.6mm or more away.
<Installation interval for EX-33□>
In case using at sensing distance (L2) 800mm, the op-
eration point (ℓ2) is approx. 60.2mm according to left
diagram.
The installation interval is
Approx. 60.2mm × 2 = approx. 120.4mm
Thus, install EX-33□ to approx. 120.4mm or more away.
<Installation interval for EX-32□>
In case using at sensing distance (L3) 50mm, the op-
eration point (ℓ3) is approx. 9.1mm according to left
diagram.
The installation interval is
Approx. 9.1mm × 2 = approx. 18.2mm
Thus, install EX-32□ to approx.
18.2
mm or more away.
Parallel deviation diagram (typical) of Thru-beam type EX-31□
100
(ℓ1)
50 0 50 100
800
(L1)
0
600
400
200
100
(ℓ2)
50 0 50 100
(L2)
0
1,000
500
10
(ℓ3)
5 0 5 10
80
(L3)
0
60
40
20
Sensing eld diagram (typical) Diffuse reective type EX-32□
Setting distance L (mm)
CenterLeft Right
Operating point ℓ (mm)
Parallel deviation diagram (typical) of Thru-beam type EX-33□
Setting distance L (mm)
CenterLeft Right
Operating point ℓ (mm)
Setting distance L (mm)
Operating point ℓ (mm)
CenterLeft Right
7
Thru-beam type EX-31□ / EX-33□
Diffuse reective type EX-32□
EX-31□: Approx. 100.6mm or more
EX-33□: Approx. 120.4mm or more
EX-31□: 500mm
EX-33□: 800mm
EX-31□: Approx. 100.6mm or more
EX-33□ Approx.120.4mm or more
Approx. 18.2mm or more
50mm
Approx. 18.2mm or more
8
4. I/O Circuit Diagram
NPN output type and PNP output type: Emitter of thru-beam type EX-31□ / EX-33□
NPN output type: Receiver of Thru-beam type EX-31□ / EX-33□, Diffuse reective type EX-32□
PNP output type:
Receiver of Thru-beam type
EX-31□-PN / EX-33□-PN,
Diffuse reective
type
EX-32□-PN
+
-
12 to 24V DC
±10%
Color code
(Brown) +V
Main circuit
(Blue) 0V
Users’ circuitInternal circuit
(Black) Output
Load
50mA max.
+
-
12 to 24V DC
±10%
Main circuit
Color code
(Brown) +V
(Blue) 0V
Users’ circuitInternal circuit
Load
+
-
12 to 24V DC
±10%
(Black) Output
50mA max.
Main circuit
Color code
(Brown) +V
(Blue) 0V
Users’ circuitInternal circuit
9
5. Adjustment
5-1 Beam alignment (Thru-beam type EX-31□ / EX-33□)
Thru-beam type EX-31□
1. Place 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 determine 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.
2. Similarly, adjust for up, down, left and right angular
movement of the emitter.
3. Further, perform the angular adjustment for the
receiver also.
4. Check that the stability indicator (green) lights up.
Thru-beam type EX-33□
1. Set the operation mode switch to the L side (Light-
ON mode position).
2. Place 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 determine 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 angular
movement of the emitter.
4. Further, perform the angular adjustment for the
receiver also.
5. Check that the stability indicator (green) lights up.
6. Choose the operation mode, as per your require-
ment, with the operation mode switch.
Sensing object
Receiver
Emitter
Operation
indicator
(Orange)
Stability
indicator
(Green)
Receiver
Emitter
Sensing object
Receiver
Emitter
Operation
indicator
(Orange)
Stability
indicator
(Green)
Receiver
Emitter
10
5-2 Sensitivity adjustment
(Thru-beam type EX-33□, Diffuse reective type EX-32□)
Thru-beam type EX-33□
●When using EX-33□, turn the sensitivity adjuster fully clockwise to the MAX. position.
However, if the beam penetrates a sensing object, adjust the sensitivity as follows.
Step
1. Turn the sensitivity adjuster fully counterclockwise to the
minimum sensitivity position.
2. In the light received condition, turn the sensitivity adjust-
er slowly clockwise and confirm the point A where 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 conrm point B where the
sensor just returns to the “Dark” state operation.
4. The position at the middle of points Aand Bis the opti-
mum sensing position.
Note: Use the flathead screwdriver (purchase separately) to turn the adjuster slowly. Turning with excessive
strength will cause damage to the adjuster.
Sensitivity
adjuster
A
B
Optimum
position
A
B
A
Operation
indicator
(Orange)
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