Panasonic EX-20 Series Instruction 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.

Thru-beam

Retroreflective

Diffuse reflective

Convergent reflective

Narrow-view reflective

Type

Diffused beam type Small spot beam type Long distance spot beam type

Model

Front sensing Side sensing Side sensing Side sensing Front sensing Side sensing Side sensing

Light-ON

EX-21A(-PN)

EX-23(-PN)

EX-29A(-PN) EX-22A(-PN) EX-24A(-PN) EX-26A(-PN) EX-28A(-PN)

No.

Item (Note 1)

Dark-ON

EX-21B(-PN)

(Note 2)

EX-29B(-PN) EX-22B(-PN) EX-24B(-PN) EX-26B(-PN) EX-28B(-PN)

5 to 160mm

2 to 25mm

6 to 14mm

45 to 115mm

Sensing range

1m

2m

30 to 200mm

With 200

200mm

(Conv. point: 10mm)

(Conv. point: 10mm)

With 100 100mm

white non-glossy

With 50 50mm

With 50 50mm

white non-glossy paper,

(Note 3)

white non-glossy

white non-glossy paper,

paper

paper

spot diameter ø1mm with

spot diameter ø5mm with

(Note 4)

setting distance 80mm.

setting distance 10mm.

Min. ø2.6mm

Min. ø3mm

ø15mm or more

Min. ø0.1mm Min. ø0.1mm Opaque,

opaque object

opaque object

Opaque,

copper wire

copper wire

translucent or

opaque or

Sensing object

transparent object

Setting distance

Setting distance

translucent object

translucent or

Setting

Setting

Min. ø1mm

between emitter and

between emitter and

(Note 3)

transparent object

distance:

distance:

copper wire wich

receiver: 1m

receiver: 2m

10mm

10mm

setting distance 80mm

Hysteresis

15% or less of operation distance

Repeatability

0.05mm or less

0.5mm or less 0.3mm or less

0.1mm or less 0.05mm or less

0.3mm or less

(perpendicular to sensing axis)

(Setting distance: 10mm)

(Setting distance: 10mm)

Supply voltage

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

Current consumption

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

20mA or less

EX- A, EX- B, EX-23

EX- A-PN, EX- B-PN, EX-23-PN

NPN open-collector transistor

PNP open-collector transistor

Output

• Maximum sink current: 50mA

• Maximum source current: 50mA

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

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

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

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

0.4V or less(at 16mA sink current)

0.4V or less(at 16mA source current)

Short-circuit protection

Incorporated

Response time

0.5ms or less

Operation indicator

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

Green LED

Green LED

Stability indicator

lights up under stable light received

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

condition or stable dark condition

located on the receiver

Sensitivity adjuster

Continuously variable adjuster,

Continuously variable adjuster

Continuously variable adjuster

located on the emitter

Protection

IP67(IEC)

Ambient temperature

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

Ambient humidity

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

Emitting element

Red LED(modulated)

Material

Enclosure: Polyethylene terephthalate, Lens: Polyalylate

Cable

0.1mm2 3-core(thru-beam type sensor emitter: 2-core) cabtyre cable, 2m long

Weight

Emitter, receiver: 20g approx. each

20g approx.

Accessories

Adjusting screwdriver: 1 No.

RF-200(Reflector): 1 No.

Adjusting screwdriver: 1 No.

Adjusting screwdriver: 1 No.

Adjusting screwdriver: 1 No.

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. Notes: 2) Either Light-ON or Dark-ON can be selected by the operation mode switch (located on the receiver).

Notes: 3) The sensing range and the sensing object of the retroreflective type sensor are specified for the RF-200 reflector. 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.

Notes: 4) In case of using this product at a sensing range of 50mm or less, take care that the sensitivity adjustment range 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 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.

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.

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

	Color code
	(Brown)+V
<![if ! IE]> <![endif]>circuit	D	+	12 to 24V DC
	(Black) Output (Note)
	Load
<![if ! IE]> <![endif]>Sensor	Tr	–	±10%
	50mA max.
	ZD
	(Blue) 0V

Internal circuit Users’ circuit

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

. . .Symbols	D : Reverse supply polarity protection diode
Symbols . . .	ZD: Surge absorption zener diode
Symbols . . .	Tr: NPN output transistor

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

		Color code
<![if ! IE]> <![endif]>circuit		(Brown)+V
		ZD	+	12 to 24V DC
		50mA max.
<![if ! IE]> <![endif]>Sensor	Tr	(Black) Output (Note)	–	±10%
		Load
	D	(Blue) 0V

Internal circuit Users’ circuit

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

. . .Symbols		D : Reverse supply polarity protection diode
Symbols . . .		ZD: Surge absorption zener diode
Symbols . . .		Tr: PNP output transistor

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

M3 screws

M3 pan head screws (Note)

Note: When mounting the front sensing type sensor, use 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
Material: Stainless steel
(SUS304)
Two M3 (length 5mm)	Material: Stainless steel (SUS304)
pan head screws
[stainless steel (SUS304)]	Two M3 (length 5mm) pan head screws
are attached.	[stainless steel (SUS304)] are attached.

Sensor mounting bracket for side sensing type

MS-EX20-2

Material: Stainless steel (SUS304)

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

MS-EX20-4

MS-EX20-5

[For EX-23 (-PN)]

Swivel:

360° rotation

Material:

Die-cast zinc alloy

Height adjustment: 15mm approx.

	Material: Nylon 6
Material: Stainless steel (SUS304)	Two M3 (length 12mm) screws with washers
	[stainless steel (SUS304)],
Two M3 (length 14mm)	one M3(length10mm) hexagon-socket-head bolt
screws with washers	[stainless steel (SUS304)], and
[stainless steel (SUS304)]	one M3 hexagon nut [stainless (SUS304)] are
are attached.	attached.

Parts description

EX-21

Stability indicator (Green)(Note)	Operation indicator (Orange)(Note)
Lights up under stable light received	Lights up when the output is ON.
condition or stable dark
condition.
Beam axis

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

L

D: Dark-ON

DSensitivity adjuster (located on the emitter)

Sensing range increases when turned clockwise.

Note: Not incorporated on the emitter.

EX-24

Stability indicator (Green)	Operation indicator (Orange)
Lights up under stable light received	Lights up when the output is ON.
condition or stable dark
condition.
Beam-receiving part	Beam-emitting part

EX-22 /26 /28 /29

	Stability indicator (Green)	Operation indicator (Orange)
	Lights up under stable light received	Lights up when the output is ON.
	condition or stable dark condition.
	Beam-receiving part
		MAX
	Beam-emitting part	Sensitivity adjuster
		Sensing range increases
		when turned clockwise.

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

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

LDark-ON mode is obtained when the operation mode switch (located on the receiver)

D	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		Sensing object
directions,		in	order to	Emitter
determine		the range
of	the light		received
condition with the help
of	the operation indi-
cator. Then,			set the	L
emitter at		the center		D
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		Sensing object
and	the	reflector
face to face along a
straight line,			move
the	reflector		in	the
up,	down,	left		and
right	directions, in				MA	Reflector
					X

order to determine

the range of the light

Sensor

received condition

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)

<![if ! IE]> <![endif]>Step	Sensitivity adjuster	Description
	MAX	Turn the sensitivity adjuster fully counter-
		clockwise to the minimum sensitivity
		position ( mark).
	MAX	In the light received condition, turn the
		sensitivity adjuster slowly clockwise and
		confirm the point A where the sensor enters
	A	the ‘Light’ state operation.

In the dark condition, turn the sensitivity adjuster further clockwise until the sensor enters the ‘Light’ state operation and then

B MAX bring it back to confirm point B where the sensor just returns to the ‘Dark’ state operation.

AIf the sensor does not enter the ‘LIght’ state operation even when the sensitivity adjuster is turned fully clockwise, this extreme position is point B .

<![if ! IE]> <![endif]>position	B	The position at the middle of points Aand
<![if ! IE]> <![endif]>Optimum		MAX
	A	B	is the optimum 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 (-PN) at a sensing range of 50mm or less, take care that the sensitivity adjustment range becomes extremely narrow.

Type Light received condition			Dark condition
<![if ! IE]> <![endif]>beam-	Emitter	Receiver	Emitter	Receiver
<![if ! IE]> <![endif]>Thru				Sensing object
<![if ! IE]> <![endif]>Retroreflective	Sensor	Reflector	Emitter	Reflector
				Sensing object
<![if ! IE]> <![endif]>reflective	Sensor		Sensor
<![if ! IE]> <![endif]>Diffuse		Sensing object
<![if ! IE]> <![endif]>reflective reflective	Sensor		Sensor
<![if ! IE]> <![endif]>Convergent Narrow-view		Sensing object

Relation between sensing output and indicators

In case of Light-ON

In case of Dark-ON

Stability	Operation	Output	Sensing	Output	Operation	Stability
indicator	indicator		condition		indicator	indicator
			Stable light
		ON	receiving	OFF
			Unstable light
			receiving
			Unstable dark
		OFF	condition	ON
			Stable dark
			condition

: lights up : lights off

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

Glossy surface	Sensing object	Reflector
10 to 30°
Sensor
L	Make L sufficiently long

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	OS-EX20-05
	(Slit size ø0.5mm)
	OS-EX20-05	3
Slit mask for EX-23	(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 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 EX21 (-PN), M3 pan head screws]. The tightening torque should be 0.5N·m or less.

Slit mask (Optional)

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

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.

Mounting spacer

(Optional)

M3 screws

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

SUNX Limited

2431-1 Ushiyama-cho, Kasugai-shi, Aichi, 486-0901, Japan

Phone: [phone] FAX: [phone]

Overseas Sales Dept.

Phone: [phone] FAX: [phone]

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