Panasonic EX26BPN, EX28A, EX26B, EX24A, EX28BPN User guide

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INSTRUCTION MANUAL

Amplier Built-in Ultra-compact Type Photoelectric Sensor

EX-20

Thank you very much for purchasing Panasonic products. Please read this Instruction Manual carefully and thorough-

ly for the correct and optimum use of this product. Kindly keep this manual in a convenient place for quick reference.

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Series

MJECK-EX20 No.0054-68V

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Manual

Model No.

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WARNING

● Never use this product as a sensing device for personnel protection.

● In case of using sensing 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.

INTENDED PRODUCTS FOR CE MARKING

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● Contact for CE Panasonic Marketing Europe GmbH Panasonic Testing Center Winsbergring 15, 22525 Hamburg,Germany

2 PART DESCRIPTION

● Front sensing

Stability indicator (Green) (Note 1)

Lights up under the stable light condition or the stable dark condition

● Side sensing

Sensitivity adjuster (Note 2)

Sensing range becomes longer when turned clockwise

Notes: 1) Not incorporated on the thru-beam type sensor emitter.

2) Not incorporated on the thru-beam type sensor receiver.

3) Incorporated on the thru-beam type sensor receiver only.

3 MOUNTING

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

M3 pan head screw (Note)

Note: When mounting the front sensing type sensor, use M3 pan

head screws without washers, etc.

4 WIRING DIAGRAMS

● NPN output type

(Brown) +V

Load

(Black)

Output (Note)

(Blue) 0V

Note:

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

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Operation indicator (Orange) (Note 1)

Lights up when the sensing output is ON

Operation mode switch (Note 3)

L: Light-ON D: Dark-ON

● PNP output type

12 to 24V DC

±10%

(Brown) +V

(Black)

Output (Note)

Load

(Blue) 0V

M3 screw

12 to 24V DC

±10%

5 SENSITIVITY ADJUSTMENT

Step

Turn the sensitivity adjuster fully counterclockwise to the minimum sensitivity position, MIN.

In the light received condition, turn the sensitivity

adjuster slowly clockwise and conrm the point A

where the sensor enters the “Light” state operation.

In the dark condition, turn the sensitivity adjuster further clockwise until the sensor enters the “Light” state op-

eration and then bring it back to conrm point B where

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 clockwise, the position is point B.

The position at the middle of points A and B

is the optimum sensing position.

6 CAUTIONS

● 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.

●EX-24

□ 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 reective object.

● If a reective object is present in the background, the sensing

EX-28

□ may be affected. When setting the sensor, make sure to conrm that the reective object has no effect. In case the reective object affects the sensing, take measures such as removing the reective 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 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.

● Extension up to total 50m (each emitter and receiver of thru-beam type), or less, is possible 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

● 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.

● 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 performance.

● 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.

● This sensor cannot be used in an environment containing

inammable or explosive gases.

● Never disassemble or modify the sensor.

7 RoHS DIRECTIVE

● This equipment complies with RoHS (EC and Chinese directive).

● Chinese RoHS indicates inclusion despite regulation value. (Refer to Chinese part.)

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PRINTED IN JAPAN

A B

Optimum position