Convergent Reflective Micro Photoelectric Sensor

PM2 SERIES

456

Selection

Guide

U-shaped

Convergent

Reflective

PM2

FIBER

SENSORS

LASER

SENSORS

PHOTO-

ELECTRIC

SENSORS

MICRO

PHOTO-

ELECTRIC

SENSORS

AREA

SENSORS

LIGHT

CURTAINS /

SAFETY

COMPONENTS

PRESSURE /

FLOW

SENSORS

INDUCTIVE

PROXIMITY

SENSORS

PARTICULAR

USE

SENSORS

SENSOR

OPTIONS

SIMPLE

WIRE-SAVING

UNITS

WIRE-SAVING

SYSTEMS

MEASURE-

MENT

SENSORS

STATIC

ELECTRICITY

PREVENTION

DEVICES

LASER

MARKERS

PLC

HUMAN

MACHINE

INTERFACES

ENERGY

CONSUMPTION

VISUALIZATION

COMPONENTS

FA

COMPONENTS

MACHINE

VISION

SYSTEMS

UV

CURING

SYSTEMS

SENSING CHARACTERISTICS (TYPICAL)

Sensing fields

• Horizontal (left and right) direction

The sensors can be mounted

side by side.

However, if the sensor

is slanted, there may be

interference.

Verify first whether there is any

interference prior to use.

• Vertical (up and down) direction

2

0.079

1

0.039

0

1

0.039

2

0.079

0

Operating point (mm in)

Center

Right

Left

White

N5

2

0.079

5

0.197

10

0.394

8

0.315

4

0.157

6

0.236

0

Operating point (mm in)

Center

Down

Up

White

N5

2

0.079

0.157

5

10

8

4

6

0.197

0.236

0.315

0.394

2

0.079

1

0.039

0

1

0.039

2

0.079

The sensors can be mounted

side by side.

However, if the sensor

is slanted, there may be

interference.

Verify first whether there is any

interference prior to use.

Vertical direction

L

15 × 15 mm 0.591 × 0.591 in

Non-glossy paper

Sensor

Correlation between lightness and sensing range

N2

0

Lightness

Light

Dark

N4

N6

N8

N2

N1

N3 N4 N5 N6 N7 N8 N9

2

0.079

0.157

5

10

8

4

6

0.197

0.236

0.315

0.394

Sensing region

The sensing region (typical)

is represented by oblique

lines in the left figure.

However, the sensitivity

should be set with enough

margin because of slight

variation in products.

Correlation between material (15 × 15 mm 0.591 × 0.591 in) and sensing range

The bars in the graph

indicate the sensing range

(typical) for the respective

material. However, there

is a slight variation in the

sensing range depending on

the product.

Further, if there is a

reflective object (conveyer,

etc.) in the background of

the sensing object, since

it affects the sensing,

separate it by more than

twice the sensing range

shown in the left graph.

0

5

0.197

0.394

0.591

0.787

10

15

20

Lightness shown on the left

may differ slightly from the

actual object condition.

PRECAUTIONS FOR PROPER USE

All models

• When fixing the sensor with screws, use M3 screws and

the tightening torque should be 0.49 N·m or less.

Further, use small, round type plain washers (ø6 mm

ø0.236 in).

O

+

M3 screws

Plain washer

(Outer dia: ø6 mm ø0.236 in)

Spring washer

Purchase separately.

Mounting

Others

• Do not use during the initial transient time (50 ms) after the

power supply is switched on.

• Take care that the product does not come in direct contact

with oil, grease, or organic solvents, such as, thinner, etc.

Wiring

• Make sure to connect terminals correctly as the sensor

does not incorporate a reverse polarity protection circuit.

• If the sensor is being used in a noisy environment,

examine the extent of noise. Further, if equipment, such

as motor, solenoid or electromagnetic valve, which

generates a large surge, is present near the sensor,

connect a surge absorber to the equipment.

Setting

• The optimum setting

distance (distance to

convergent point) is

5 mm 0.197 in.

The sensor is not affected

even by a specular

background if it is located

30 mm 1.181 in, or more,

away from the sensor.

5 mm

0.197 in

Sensor

Sensing

object

30 mm 1.181 in

or more

However, the specular background should be a plane

surface, directly facing the sensor. A spherical or curved

background may be detected.

Sensor

15 × 15 mm 0.591 × 0.591 in

Non-glossy paper

L

Horizontal direction

• 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.

Refer to p.1458~ for general precautions.