Omron E3X-NH Manuale utente

High-Precision Fiber-optic Amplifier E3X-NH

TheE3X-NHEmploysa16-Bit

Processor as An Industry First

HAn Automatic Sensitivity Adjustment

feature allows stable detection of

objects in frequently changing

environments

HThree teach modes for optimal sensing

H8-point scaled sensitivity meter is ideal

for high precision sensing and

through-beam applications at long

distances (and clearly displays a

target’s reflectivity level)

HA manual fine tuning sensitivity feature

allows 13 threshold adjustments using

an easy-to-read digital scale

HIdeal for detecting small objects or fine

wires

HNPN/PNP types available

Ordering Information

JAMPLIFIER UNITS

Description General-purpose models Timer-function models

Output NPN PNP NPN PNP

Part number E3X-NH11 E3X-NH41 E3X-NH21 E3X-NH51

Appearance

Light source (Wave length) Red LED (680 nm)

Power supply voltage 12 to 24 VDC ±10%, ripple (p-p) 10% max.

Current consumption 75 mA max.

Output Control

output

NPN open collector,

load current: 50 mA

PNP open collector,

load current: 50 mA

NPN open collector,

load current: 50 mA

PNP open collector,

load current: 50 mA

Alarm output ma

., res

age:

1Vmax.

., res

age:

1Vmax.

., res

age:

1Vmax.

max., res

age:

1Vmax.

Response time 1 ms max. for turn-on and turn-off, respectively

Sensitivity setting Teaching method

Fine sensitivity adjustment Automatic or manual fine threshold adjustment (13 levels)

E3X-NH E3X-NH

Specifications

Description General-purpose models Timer-function models

Part number E3X-NH11 E3X-NH41 E3X-NH21 E3X-NH51

Light source Red (680 nm)

Supply voltage 12--24 VDC +10% ripple (p-p) 10 % max.

Output NPN PNP NPN PNP

Timing —— 40 ms off delay

Indicator Operation indicator (orange LED), 8-level incident level indicator (green LED), 13-level

threshold indicator (red LED)

Circuit protection Output short-circuit protection, reverse polarity on supply

Operation mode Light ON and Dark ON, switch-selectable

Ambient light immunity Incandescen

tlamp

3,000 ℓxmax.

Sunlight 10,000 ℓxmax.

Ambient temperature Operating -- 2 5 °Cto55°C(--13°F to 131°F) with no icing

Storage -- 4 0 °Cto70°C(--40°F to 158°F) with no icing

Ambient humidity Operating 35% to 85% (with no condensation)

Dielectric strength 1,000 VAC at 50/60 Hz for 1 minute

Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude or 300 m/s2(approx. 30G) for 2 hrs each in X, Y, and

Z directions

Insulation resistance 20 MΩmin. (at 500 VDC)

Shock resistance 500 m/s2(approx. 50G) for 3 times each in X, Y, and Z axis

Enclosure rating IEC IP50

Connection method 2m cable

Material Case PBT

Cover Polycarbonate

Weight (with 2 m cable) Approx. 100 g

Accessory Mounting brackets (included)

E3X-NH

Nomenclature

JE3X-NH11

Operation Indicator (orange)

Lit when output is ON.

Incident Level Indicators

(green, 8 levels)

Lit depending on the incident

light amount.

Mode Selector

Switchable among TEACH, ADJ, and

RUN modes.

UP/DOWN Selector

Select UP for increasing the threshold value.

Select DOWN for decreasing the threshold

value.

Operation Mode Selector

Switchable between light-ON and

dark-ON modes.

SET Button

For teaching or for fine threshold ad-

justment

Threshold Indicators

(red, 13 levels)

Indicates threshold level.

Operation

JOUTPUT CIRCUITS

E3X-NH11 (NPN output)

Brown

Black

Orange

Blue

Alarm output

Control

output

Load

12 to 24 VDC

Photo-

electric

sensor

main

circuit

PNP circuits

Load

Brown

Black

Orange

Blue

Control output

Alarm

output

12 to 24 VDC

Photo-

electric

sensor

main

circuit

JOPERATION MODE

Light-ON Dark-ON

OFF

Light received

Light not received

Operation indicator

(orange)

Output

transistor

Load (relay) Operate

Release

(Between brown and black)

OFF

Light received

Light not received

Operation indicator

(orange)

Output

transistor

Load (relay) Operate

Release

(Between brown and black)

E3X-NH E3X-NH

JSENSITIVITY SETTING AND ADJUSTMENT

Refer to the following to select the most suitable sensitivity setting method. We recommend that two-point teaching and manual-tuning be

tried first.

Using the Sensor at the

Maximum Sensitivity

Application Examples

Detection of a passing object with

through-beam fibers.

Checking IC Tray Arrangements

E3X-NH

Sensing Slight Differences

Application Examples

Detection of slight differences in

reflection.

Detection of translucent objects.

Detection of object surface irregu-

larities.

Color discrimination.

Detecting IC Chips on Film Sheet

E3X-NH

E32-T16P

Sensitivity Setting

Without Objects

Application Examples

Detection of minute passing ob-

jects.

Detection of lead wires.

High-precision positioning.

Detecting Lead Frame Position

E32-D32

Lead frame

Fine-tuning on Production Lines

Reason

Marginal sensitivity adjustment is required considering the

differences in targets.

For high-precision positioning of electronic parts.

Detecting

Lead Frame Rises

E3X-NH

Ideal Operation Under Frequently Changing

Environments

Reason

Dust sticking to the fiber tip.

Targets are slightly different from each other in color or

surface quality.

Detecting

Passing Chip Parts

E3X-NH

E32-T16P

Auto-tuning (Automatic Sensitivity Compensation)

Fine-tuning, if required.

E32-T24

Detecting

Cassette Tape Cases

Ensuring reliable detection

without being influenced by

the difference in color or

mark.

E3X-NH

E32-L25A

3.3 mm

Counting

Number Of Pills

Sensitivity Setting

Film sheet

Sensitivity Adjustment (Fine-tuning)

Maximum Sensitivity Setting One-point Teach ModeTwo-point Teach Mode

Manual-tuning (Fine Sensitivity Adjustment)

E3X-NH

JSENSITIVITY SETTING (TEACHING)

The sensitivity of the E3X-NH is factory-set to maximum. When resetting the sensitivity of the E3X-NH to maximum after with/without-ob-

ject teaching or positioning/no-object teaching, follow the steps described below.

Maximum Sensitivity Setting

1. Set the mode selector to TEACH.

Hold the SET button down for three seconds. Be sure that all

the threshold indicators (red) are lit. The built-in buzzer will

beep once when the threshold indicator is lit.

Press for 3 s min.

2. The sensitivity will be set when the built-in buzzer beeps

continuously and all the incident level indicators (green) are

lit.

3. Set the mode selector to RUN. Be sure that only the bottom

threshold indicator is lit.

Two-point Teach Mode

1. Set the mode selector to TEACH.

Place the target object in the sensing area and press the

SET button once. Be sure that all the threshold indicators

(red) are lit. The built-in buzzer will beep once when the

threshold indicator is lit.

Press once for 0.5 to 2.5 s

Through-beam Model Diffuse Model

Diffuse Model

Light is

interrupted.

Mark

Base

2. Remove the object and press the SET button.

If teaching is OK:

All the incident level indicators (green) will be lit. The built-in

buzzer will beep once.

Press once for 0.5 to 2.5 s

E3X-NH E3X-NH

If teaching is not stable:

The threshold indicator (red) will flash. The built-in buzzer will

beep 3 times.

Change the position of the object and the sensing distance

that has been set and repeat the process.

Through-beam Model Diffuse Model

Diffuse Model

Light is received.

Mark

Base

Hold set button down

for 0.5 to 2.5 s

3. Set the mode selector to RUN. Be sure that the middle

threshold indicator is lit. The threshold will be set to a 50%

value.

One-point Teach Mode

1. Set the mode selector to TEACH.

Press the SET button once without a target object in the

sensing area. Be sure that all the threshold indicators (red)

are lit. The built-in buzzer will beep once when the threshold

indicators are lit.

Press once for 0.5 to 2.5 s

2. Set the mode selector to RUN. The threshold is set automati-

cally.

3. The Sensor will automatically compensate for environmental

changes.

E3X-NH

JSENSITIVITY ADJUSTMENT (TUNING)

Manual-tuning

(Fine Sensitivity Adjustment)

Note: The auto-tuning function will be disabled if manual-tuning is

utilized.

1. After setting the sensitivity of the E3X-NH, select the adjust-

ment direction with the UP/DOWN selector in the ADJ mode.

(1)

(2)

2. Press the SET button in ADJ mode. Be sure that the

threshold-level changes whenever the SET button is

pressed. If two threshold indicators are lit, the threshold will

automatically be set to a middle value equal to the target’s

sensed value.

3. Set the mode selector to RUN.

Auto-tuning

(Automatic Sensitivity Compensation)

1. Set the mode selector to TEACH.

Press the SET button once without a target object in the

sensing area. Be sure that all the threshold indicators (red)

are lit. The built-in buzzer will beep once when the threshold

indicators are lit.

2. Set the mode selector to ADJ and press the SET button for

three seconds minimum. Be sure that the threshold indicator

(red) flashes. The built-in buzzer will beep continuously when

cycle is complete.

Press for 3 s min.

(2)

(1)

3. Set the mode selector to RUN. The threshold indicator (red)

will continue to flash while the the auto-tuning function is

enabled.

E3X-NH E3X-NH

JSENSITIVITY SETTING—THRESHOLD SETTING AND INDICATORS

Threshold

indicators

Level 1 2 3 4 5 6 7 8 9 10 11 12 13

Maximum Sensitivity Setting

•Use Through-beam Fibers for detection of opaque objects.

•Use the Diffuse Fibers for detection of objects with fixed background.

The threshold should be set to a level slightly higher than the Zero point when detecting objects that completely interrupt light.

Diffuse Sensor

The number of incident level indicators that are lit will depend on the location of the object. The bottom indicator of the threshold indicators

will always be lit.

Farther

Closer

Light

Target

Threshold

Incident

level

indicator

Threshold

indicator

Target

2-Point Teach Mode

•Ideal for the detection of object surface irregularities or minute objects.

•Ideal for the detection of objects against a background that reflects light irregularly.

Closer

Light

Fiber

head Target

Farther

Diffuse Sensor

1. Press the SET button with the target in the sensing area.

Then press the SET button without target in the sensing

area, as illustrated at the right.

2. Set the threshold to the middle value between the values

obtained with and without the target.

Small

Light

Fiber

head

Large

Small

Light

Large

Threshold

RUN/ADJ Mode

The number of the incident level indicators lit depends

on the position of the target. When using the

manual-tuning function, it is possible to adjust the

threshold in six levels. The default threshold is set to 7.

Farther

Closer

Light

Target

Threshold

Incident

level

indicator

Threshold

indicator

E3X-NH

One-point Teach Mode

•Ideal if it is impossible to perform teaching with the target

fixed in the sensing area.

•Ideal for high-precision positioning.

•Ideal for detection of bright or dark objects.

Diffuse (Light-ON) Fiber Unit

1. Press the SET button without the target in the sensing

area.

Set the threshold to the value that is ±6% of the incident

level.

Incident level without a fixed background

or target.

Farther

Closer

Light

Threshold

Note:If the target is not present at the time of teaching, the

threshold cannot be set to the position corresponding

to -6% of the incident level. The sensitivity will then be

set to maximum automatically when in RUN mode.

2. Detecting the first object in RUN/ADJ mode.

Tuning

range

18%

Incident

level

indicator

Threshold

indicator

Farther

Closer

Light

Threshold

Target

The number of indicators lit depends on

the position of the target. The threshold

position of the target is set to 7.

Through-beam

(

Dar

-ON

)

Fiber Unit

1. Press the SET button without target in the sensing area.

Set the threshold to the value that is ±6% of the incident

level.

Farther

Closer

Light

Threshold

Threshold Incident level without a fixed

background or target.

2. Detecting the first object in RUN/ADJ mode.

6% 18%

18%

Farther

Closer

Light

Threshold

Incident

level

indicator

Threshold

indicator

Target

Tuning

range

The number of indicators lit depends on

the position of the target. The threshold

position of the target is set to 7.

E3X-NH E3X-NH

JTHRESHOLD LEVEL AND INDICATOR LEVELS

Setting the Initial Threshold

•To set the initial threshold, perform One-point teaching by pressing the SET button for a minimum of 3 seconds.

•As a result of target movement during operation, the middle value between the highest and lowest point on the incident scale will be

obtained. The E3X-NH will perform an auto-tuning function within a range of ±18% of this value.

Initial threshold for

auto-tuning

Tuning

range

18%

Incident

level

indicator

(see note)

Threshold

indicator

(The

threshold is

set to 7.)

Farther

Closer

Light

Threshold

Note: The number of Incident-level

indicators lit depends on the

presence of the target.

Threshold Compensation

Threshold compensation

Time

Threshold

indicator

Farther

Closer

Light

•The sensor will perform an Automatic Threshold Compensation within the preset band.

•After the threshold has been compensated, the Threshold Indicator will flash, indicating the adjusted value.

•Threshold compensation occurs at 1, 3, 6, 10, 15, 22, and 30 minutes after turning on the E3X-NH. After the initial 30 minute time-

frame, Threshold Compensation is continually repeated, every 30-minutes.

•Alarm output will occur if the threshold compensation range is not within the tuning range. Perform sensitivity setting again if the alarm

signal turns ON.

Indice

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