Panasonic EX-21A Installation Manual

INSTRUCTION MANUAL

Ultra-compact Photoelectric Sensor

Amplifier Built-in Type

EX-20 Series

Thank you very much for using SUNX sensors. Please read this Instruction Manual carefully and thoroughly for the correct and optimum use of this sensor. Kindly keep this manual in a convenient place for quick reference.

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.

EX- A, EX- B, EX-23 / NPN output type

Color code

(Brown)+V

Sensor circuit

(Black) Output (Note)

(Blue) 0V

50mA max.

Load

–

12 to 24V DC ±10%

Convergent reflective

Diffused beam type

EX-24A(-PN) EX-24B(-PN)

2 to 25mm

(Conv. point: 10mm)

With 50 50mm white non-glossy paper

Min. ø0.1mm copper wire

Setting distance: 10mm

Small spot beam type

EX-26A(-PN) EX-26B(-PN)

6 to 14mm

(Conv. point: 10mm)

With 50 50mm white non-glossy paper, spot diameter ø1mm with setting distance 10mm.

Min. ø0.1mm copper wire

Setting distance: 10mm

15% or less of operation distance

0.1mm or less (Setting distance: 10mm)

0.05mm or less (Setting distance: 10mm)

20mA or less

Applied voltage: 30V DC or less(between output and +V) Residual voltage: 1V or less(at 50mA source current)

0.4V or less(at 16mA source current)

Green LED

Continuously variable adjusterContinuously variable adjuster

20g approx.

Adjusting screwdriver: 1 No.

Model

(Note 1)

Item

No.

Type

Light-ON

Dark-ON

Thru-beam

Front sensing Front sensing

EX-21A(-PN) EX-21B(-PN)

Side sensing Side sensing Side sensing Side sensing Side sensing

EX-23(-PN)

(Note 2)

Retroreflective

Diffuse reflective

EX-22A(-PN)EX-29A(-PN) EX-22B(-PN)EX-29B(-PN)

5 to 160mm

Sensing range

1m 2m

30 to 200mm

(Note 3)

With 200 200mm white non-glossy paper

(Note 4)

Sensing object

Min. ø2.6mm opaque object

Setting distance between emitter and receiver: 1m

Min. ø3mm opaque object

Setting distance between emitter and

ø15mm or more opaque or translucent object

receiver: 2m

(Note 3)

Opaque, translucent or transparent object

Hysteresis Repeatability

(perpendicular to sensing axis) Supply voltage Current consumption

Output

Short-circuit protection Response time Operation indicator

Stability indicator

Sensitivity adjuster Protection Ambient temperature Ambient humidity Emitting element Material Cable Weight Accessories

)

Notes: 1

Model Nos. having the suffix ‘-PN’ are PNP output type. The retroreflective type having the suffix ‘-Y’ at the end of the model No. does not have the reflector RF-200 enclosed with it.

)

Either Light-ON or Dark-ON can be selected by the operation mode switch (located on the receiver).

Notes: 2

)

The sensing range and the sensing object of the retroreflective type sensor are specified for the RF-200 reflector.

Notes: 3

Further, the sensing range is the possible setting range for the reflector. The sensor can detect an object less than 30mm away. However, if the reflector is set 100mm or less away, the sensing object should be opaque.

)

In case of using this product at a sensing range of 50mm or less, take care that the sensitivity adjustment range

Notes: 4

becomes extremely narrow.

EX-24A(-PN) and EX-24B(-PN) are not

incorporated with a sensitivity adjuster. If there is a reflective object (conveyor, etc.) in the background, since it may affect the sensing, use these models by keeping enough distance from the reflective object. If a reflective object is present in the background, the sensing of EX-28A(-PN) and

EX-28B(-PN) may be affected. When setting

the sensor, make sure to confirm that the reflective object has no effect. In case the reflective object affects the sensing, take measures such as removing the reflective object or coloring it in black, etc. If sensors are mounted close together and the ambient temperature is near the maximum rated value, provide for enough heat radiation/ ventilation. Make sure to carry out the 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

0.05mm or less

0.3mm or less0.5mm or less

12 to 24V DC± 10% Ripple P-P 10% or less

Emitter: 10mA or less, Receiver: 15mA or less

EX- A, EX- B, EX-23 NPN open-collector transistor

• Maximum sink current: 50mA

•

Applied voltage: 30V DC or less(between output and 0V)

•

Residual voltage: 1V or less(at 50mA sink current)

0.4V or less(at 16mA sink current)

EX- A-PN, EX- B-PN, EX-23-PN PNP open-collector transistor

• Maximum source current: 50mA

•

Incorporated

0.5ms or less

Orange LED(lights up when the output is ON)(thru-beam type: located on the receiver)

Green LED

lights up under stable light received condition or stable dark condition

located on the receiver

Continuously variable adjuster, located on the emitter

lights up under stable light received condition or stable dark condition)

(

IP67(IEC)

–25 to +55˚C(No dew condensation or icing allowed), Storage: –30 to +70˚C

35 to 85% RH, Storage: 35 to 85% RH

Red LED(modulated)

Enclosure: Polyethylene terephthalate, Lens: Polyalylate

0.1mm

3-core(thru-beam type sensor emitter: 2-core) cabtyre cable, 2m long

Emitter, receiver: 20g approx. each

Adjusting screwdriver: 1 No. Adjusting screwdriver: 1 No.

RF-200(Reflector): 1 No. Adjusting screwdriver: 1 No.

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. Extension up to total 50m (thru-beam type: both emitter and receiver) is possible with

0.3mm2, or more, cable. Make sure that stress is not applied directly to the sensor cable joint. Do not run the wires together with highvoltage lines or power lines or put them in the same raceway. This can cause malfunction due to induction. Take care that the sensor is not directly exposed to fluorescent light from a rapid-starter lamp or a high frequency lighting device, as it may affect the sensing performance. Avoid dust, dirt and steam. Take care that the sensor does not come in direct contact with water, oil, grease, or

organic solvents, such as, thinner, etc. regulator, ensure that the frame ground (F.G) terminal of the power supply is connected to an actual ground.

Narrow-view reflective Long distance spot beam type

EX-28A(-PN) EX-28B(-PN)

Internal circuit

Note: The emitter of thru-beam type sensor does not incorporate the output.

Symbols . . . D Symbols . . . ZD Symbols . . . Tr

45 to 115mm

With 100 100mm white non-glossy paper, spot diameter ø5mm with setting distance 80mm.

Opaque, translucent or transparent object

Min. ø1mm copper wire wich setting distance 80mm

0.3mm or less

EX- A-PN, EX- B-PN, EX-23-PN / PNP output type

Sensor circuit

Internal circuit

Note: The emitter of thru-beam type sensor does not incorporate the output.

Symbols . . . D Symbols . . . ZD Symbols . . . Tr

Mount using M3 screws. The tightening torque should be 0.5N·m or less.

M3 pan head screws (Note)

When mounting the front sensing type sensor, use

Note:

M3 pan head screws without washers, etc.

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

MS-EX20-1 MS-EX20-3

Sensor mounting bracket for side sensing type

MS-EX20-2

MS-EX20-4

Material: Stainless steel (SUS304) Two M3 (length 14mm) screws with washers [stainless steel (SUS304)] are attached.

Users’ circuit

Reverse supply polarity protection diode : Surge absorption zener diode : NPN output transistor

Color code

(Brown)+V

50mA max.

(Black) Output (Note)

(Blue) 0V

Reverse supply polarity protection diode

Load

Users’ circuit

–

: Surge absorption zener diode : PNP output transistor

Material: Stainless steel (SUS304) Two M3 (length 5mm) pan head screws [stainless steel (SUS304)] are attached.

MS-EX20-5 [For EX-23 (-PN)]

Material: Stainless steel (SUS304) Two M3 (length 14mm) screws with washers [stainless steel (SUS304)] are attached.

Material: Nylon 6 Two M3 (length 12mm) screws with washers [stainless steel (SUS304)], one M3 (length10mm) hexagon-socket-head bolt [stainless steel (SUS304)], and one M3 hexagon nut [stainless (SUS304)] are attached.

Material: Die-cast zinc alloy

12 to 24V DC ±10%

M3 screws

Swivel: 360° rotation

Height adjustment: 15mm approx.

Parts description

EX-21

Stability indicator (Green)(Note) Lights up under stable light received condition or stable dark condition.

Beam axis

Operation indicator (Orange)(Note) Lights up when the output is ON.

Note: Not incorporated on the emitter.

EX-23

Stability indicator (Green)(Note) Lights up under stable light received condition or stable dark condition.

Beam axis

Operation indicator (Orange)(Note) Lights up when the output is ON.

Operation mode switch (located on the receiver) L

: Light-ON

: Dark-ON

Sensitivity adjuster

(located on the emitter) Sensing range increases when turned clockwise.

Note: Not incorporated on the emitter.

EX-24

Stability indicator (Green) Lights up under stable light received condition or stable dark condition.

Beam-receiving part

Operation indicator (Orange) Lights up when the output is ON.

Beam-emitting part

EX-22 /26 /28 /29

Stability indicator (Green) Lights up under stable light received condition or stable dark condition.

Beam-receiving part

Beam-emitting part

Operation indicator (Orange) Lights up when the output is ON.

MAX

Sensitivity adjuster Sensing range increases when turned clockwise.

Operation mode switch [EX-23 (-PN) only]

Switch position Description

Light-ON mode is obtained when the operation mode switch (located on the receiver) is turned fully clockwise (L side).

Dark-ON mode is obtained when the operation mode switch (located on the receiver) is turned fully counterclockwise (D side).

Note: Operation mode switch should be turned fully till it stops.

Light beam alignment

Thru-beam type sensor

In case of EX-23(-PN), set the operation mode switch to the Light-ON mode position (L side).

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 determine the range

Sensing object

Emitter

of the light received condition with the help of the operation indicator. Then, set the emitter at the center of this range.

Receiver

Similarly, adjust for up, down, left and right angular movement of the emitter.

Further, perform the angular adjustment for the receiver also.

Check that the stability indicator lights up. In case of EX-23 (-PN), choose the operation

mode, Light-ON or Dark-ON, as per your requirement, with the operation mode switch.

Retroreflective type sensor

Turn the sensitivity adjuster fully clockwise to the maximum sensitivity position (MAX).

Placing the sensor and the reflector

Sensing object

face to face along a straight line, move the reflector in the up, down, left and right directions, in order to determine the range of the light received condition

Sensor

Reflector

with the help of the operation indicator. Then, set the reflector at the center of this range.

Similarly, adjust for up, down, left and right angular movement of the reflector.

Further, perform the angular adjustment for the sensor also.

Check that the stability indicator lights up.

Sensitivity adjustment (Side sensing type only)

Sensitivity adjuster

Step

MAX

Turn the sensitivity adjuster fully counterclockwise to the minimum sensitivity position ( mark).

In the light received condition, turn the

MAX

sensitivity adjuster slowly clockwise and confirm the point where the sensor enters

Optimum position

Notes: 1)

Type

Thru-beam

Retroreflective

Diffuse reflective

Convergent reflective

Narrow-view reflective

the ‘Light’ state operation.

In the dark condition, turn the sensitivity adjuster further clockwise until the sensor enters the ‘Light’ state operation and then bring it back to confirm point where the

MAX

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 clockwise, this

extreme position is point .

MAX

The position at the middle of points and

is the optimum sensing position.

Use the accessory adjusting screwdriver to turn the adjuster slowly. Turning with excessive strength will damage the adjuster. In case of using EX-22 (-PN) at a sensing range of 50mm or less, take care that the sensitivity adjustment range becomes extremely narrow.

Light received condition Dark condition

Sensor

Sensor Sensor

Description

Receiver ReceiverEmitter Emitter

Sensing object

Emitter

Reflector Reflector

Sensing object

Sensor

Sensing object

Relation between sensing output and indicators

In case of Light-ON

Stability

Operation

indicator

Output Output

indicator

OFF ON

: lights up : lights off

Sensing condition

Stable light receiving

Unstable light receiving

Unstable dark condition

Stable dark condition

In case of Dark-ON

Operation indicator

OFF

Stability indicator

When sensing a glossy object, mount the sensor at an angle to the object surface.

Glossy surface

10 to 30°

Sensor

Sensing object

L Make L sufficiently long

Reflector

Apply a slit mask when detecting small objects or for increasing the accuracy of sensing position. However, the sensing range is reduced when the slit mask is mounted.

Slit mask for

EX-21

EX-23

OS-EX20-05

(

Slit size ø0.5mm)

OS-EX20-05 3

(

Slit size 0.5 3mm)

OS-EX20E-05

(

Slit size ø0.5mm)

OS-EX20E-05 3

(

Slit size 0.5 3mm)

The slit mask should be mounted on the sensor before mounting the sensor.

Mounting method

Put the slit mask on

Slit mask (Optional)

the sensor as shown in the right figure.

Align the mounting holes of the slit mask and the sensor and mount with two M3 screws [in case of

EX-

21 (-PN), M3 pan

head screws].

The tightening torque should be 0.5N·m or less.

M3 pan head screws

When mounting the front sensing type from the backside, fit the mounting spacer (MS-EX20-FS) and fix with screws.

Mounting method

Mounting spacer

(Optional)

Fit the mounting spacer on the sensor.

Align the mounting holes of the mounting spacer and the sensor and mount with M3 screws. The tightening torque should be 0.5N·m or less.

M3 screws

http://www.sunx.co.jp/ SUNX Limited

SUNX Limited

2431-1 Ushiyama-cho, Kasugai-shi, Aichi, 486-0901, Japan Phone: +81-(0)568-33-7211 FAX: +81-(0)568-33-2631

Overseas Sales Dept.

Phone: +81-(0)568-33-7861 FAX: +81-(0)568-33-8591

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