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PRECAUTIONS FOR SAFE USE

PRECAUTIONS FOR CORRECT USE

Manufacturer:
  Omron Corporation,
  Sensing Devices Division H.Q.
  Industrial Sensors Division
     & Application Sensors Division
  Shiokoji Horikawa, Shimogyo-ku,
  Kyoto, 600-8530 JAPAN

TRACEABILITY INFORMATION:
Representative in EU:
  Omron Europe B.V.
  Wegalaan 67-69
  2132 JD Hoofddorp,
  The Netherlands

The following notice applies only to products that carry the CE mark:
Notice:
This is a class A product. In residential areas it may cause radio 
interference, in which case the user may be required to take adequate 
measures to reduce interference.

© 

OMRON Corporation    2000

 All Rights Reserved. 

Thank you for selecting OMRON product. This sheet primarily describes precautions 

required in installing and operating the product.
Before operating the product, read the sheet thoroughly to acquire sufficient knowledge of 

the product. For your convenience, keep the sheet at your disposal.

Model

 

E3X-DA

□□

TW

OPTICAL FIBER PHOTOELECTRIC SENSOR
(DIGITAL LEVEL INDICATION)

INSTRUCTION SHEET

1) Do not use the sensor in explosive or ignition gas.

2) Never disassemble, repair nor tamper with the sensor.

3) Do not apply excess voltage and current over rating.

4) Do not wire improperly such as reversing polarity.

5) Connect the load correctly.

6) Do not short-circuit the load.

1) There are some cases where the photoelectric switch cable is unavoidably wired in 

a tube or duct together with a noisy or power line. This causes an induction, 

possibly resulting in malfunction or damage. In principal, the cable should be 

wired separately or shielded.

2) For extending wires, use a cable 0.3mm

2

 min.,and 100m max. in length. When 

using the cable as a Korea’s S-mark certified product,use the cable of less than 

10m in length.

3) Do not exceed the following force values applied to the cable.

    Tencile:80N max., torque:0.1N

m max., Pressure: 20N max., flexure: 3kg max.

4)Operation after the power is turned on.

The E3X-DA will begin sensing no later than 200ms after the power is turned 

on. If the load and the E3X-DA connect to different power supply, the E3X-DA 

must be always turned on first.

5)EEPROM write errors

If a write error (output indicator : flashing) occurs during teaching due to a power 

failure or noise from static electricity, execute the teaching again using the button 

on the main unit.

6)When using the sensor, protective cover must be put on the sensor.

■ RATINGS/PERFORMANCE AMPLIFIER UNIT

■ NOMENCLATURE

Operation lndicator (orange)

Lit during output operation

Channel Selector
CH1/CH2

Level Indicator

SET Key

Used for adjustment of 

    the threshold level

Used for teaching. etc.

Mode Selector
SET, ADJ, RUN

TEACH

MODE

ADJ

ADJ

SET

TEACH

MODE

RUN

CH1

1

2

CH2

NPN

PNP

DA11TW

DA41TW

DA6TW

DA8TW

Connecting type

Prewire type

Connector type

(*)

Normal position : Power consumption 960mW (Supply voltage 24V Current consumption 40mA)

Ecological mode : Power consumption 720mW (Supply voltage 24V Current consumption 30mA)

Digital display OFF : Power consumption 600mW (Supply voltage 24V Current consumption 25mA)

Type

E3X-

Red LED

12 to 24V DC 

±

10

 ripple 10

 max.

Light source

Supply voltage

Timer function

0

200ms

Control output

Open collector 26.4V DC max., 50mA max.

Residual Voltage : 1V DC max.Off-state current : 0.5mA max.

Power consumption

(**)

Applied connector 
Both E3X-CN21(Main conector 4 cores) and E3X-CN22
(Extension conector 2 cores) are available.
The Ecological mode and the Digital display OFF mode can be set 
from extra mobaile console "E3X-MC11" only.
Maximum 16 channels(E3X-DA

□□

TW:8 units max.) can be set 

from E3X-MC11.
(SET of Operation mode and Area detection is not available.)

(*)

(**)

(***)

2. Sensitivity Setting

1. Standard procedures…setting each mode (SET/ADJ/RUN)

switch

SET mode

ADJ mode

RUN mode

Setting & operation

Display

Threshold

level

Analog

display

Allownce

Analog

display

Allowance

Light amount

SET

TEA

CH

MODE

TEA

CH

MODE

RU
N

ADJ

TEA

CH

MODE

TEA

CH

SET

R

UN

ADJ

SET

R

UN

ADJ

1.Teaching the automatic sensitivity 

level.

  

Maximum sensitvity setting

  

One-point (without work) 

 

teaching

  

Two-point (with/without 

work) teaching 

  

Pin-point (to settle Position) 

teaching

Refer to subsection 6 

Setting 

procedures

.

The selected channel in the channel 
selector can be adjustable.

Refer to subsection 2.2 

Adjustment the sensitivity level

.

Refer to subsection 4 

Swiching the display type

as to 

the display.

Refer to subsection 5 

Resetting display

Digital display shows incident 
light amount

Digital display shows threshold 
level and percentage 
allowance. Analog display 
shows light amount and 
threshold level.

Digital display shows
light amount and percentage 
allowance.Analog display 
sh-ows light amount and 
thres-hold level.

2. Setting procedures

Press the TEACH key

Press the MODE key
to select function

Press the TEACH key
to set up procedures

1. Sensitivity adjustment

By pressing TEACH key,
the sensitivity level gets higher.
( the threshold level gets lower.)

By pressing MODE key,
the sensitivity level gets lower.
( the threshold level gets higher.)

1. Detection

 *

It's possible to do without any key.

3. Zero reset

2. Swiching the display type

  

Digitally displayed

  

Digitally displayed in percentage

  

Analog display in bars

Pressing Mode key
to swich. 
Refer to subsection 4 

Swiching the display type

Pressing TEACH key
to reset display.

2. 1  Teaching the automatic sensitvity level.

(1) Select the channel to set.
(2) Set the mode selector to the SET position.

Hold down the   Key for 3 
seconds or longer.
(The incident light amount 
is digitally displayed.)

Make sure the red indicators light up
first and then the green indicators light
up instead. Go to the RUN mode. (After
the green indicators light up about 1
second, the incident light amount gets
digitally displayed again.)

Hold down the   Key
for   0.5-2.5   seconds    
(The incident light
amount is digitally dis-
played.)

Make sure the red indicators light up. 
Go to the RUN mode. (After the red in-
dicators light up about 1 second, the in-
cident light amount getsdigitally dis-
played again.) 

 One-point (without work) teaching

 Maximum sensitivity setting

O K

N G

F la s h in g

Place the work in posi-
tion and hold down   Key 
button for 0.5-2.5 seconds. 
(The incident light amount 
is digitally displayed.)

Make sure the green in-
dicators light up. Go to 
the RUN mode. (After the 
green indicators light up
about 1 second, the inci-
dent light amount gets
digitally displayed again.)

Hold down   Key without 
work for 0.5

2.5 seconds. 

(The incident light amount 
is digitally displayed.)

Make sure the red indicators light up.
(After the red indicators light up about 1 second, the 
incident light amount gets digitally displayed again.)
Place the work and Hold down the 

  Key

 for 3 

seconds or longer.

Make sure the red indica-
tors blink. Reposition the
work and change the set-
ting distance. Take the 
above steps 

 and 

 

again. (After the indicators 
blink 3 times, the incident 
light amount gets digitally 
displayed again.)

Make sure the red indicators light up. (Af-
ter the red indicators light up about 1
second, the incident light amount gets 
digitally displayed again.) Move the work
off position, and hold down    Key again 
for 0.5-2.5 seconds.

 Two-point (with/without work) teaching

2. 2 Adjustment the sensitivity level (manual adjustment).

(1) Select the channel to adjust.
(2) Set the mode selector to the ADJ position.
(3) Press       key to adjust the sensitivity level.

By pressing TEACH key, the sensitivity level gets higher. 
 (the threshold level gets lower.)
Hold down the key to change the number faster.

By pressing MODE key, the sensitivity level gets lower.
 (the threshold level gets higher.)
Hold down the key to change the number faster.

It's possible to adjust the sensitivity without teaching.

During adjustment the sensitivity, sensor is working.

3. To make detection

(1)Set the mode selector to the RUN position.
(2)Make detection. (No more procedures)

4. Swiching display

(1)Set the mode selector to the RUN position.
(2)To swich display, hold down    Key for 2 seconds or longer.

Make sure the green indicators 
light up. Go to the RUN mode.
(After the green indicators light 
up about 1 second, the incident 
light amount gets digitally 
displayed again.)

The red indicators are blinking. 
Replace the work, set distance, do 
it again from 

. (After red 

indi-cators are blinking 3 times, 
the incident light amount gets 
digitally displayed again.)

OK

NG

Flashing

 Pin-point (to settle Position) teaching

The incident light 
amount is digitally 
displayed (in red).

The incident light amount and the 
threshold level are displayed in 
green and red, respective, in bars.

The light amount allow-ance 
is digitally displayed in 
percentage (in red).

Incident light amount (digital)

Analog display

Allowance (digital in percentage)

Hold down

2 sec or longer

5. Zero reset  (Swich display to「0」in a flash.)

6. Setting functions 

These functions are helpful for the cases below.

Changing the operation mode 

 Operation mode setting

Detecting a long distance or detecting more quickly or area 

    detection
      (changing the detection function) 

Detection function setting

Using the off-delay timer: Timer setting

Upgrading the spot recognition in adjusting the optical axis:

 Flashing setting

Keeping the digital data displayed: Display hold setting

Changing the digital display direction: Display direction setting

Operation mode

[L.

ON/D.ON

Detection function

STANDARD/LONG DISTANCE/HIGH SPEED/AREA

Timer

0-200ms (0

20ms : every 1ms   20

200ms : every 5ms)

Flashing

ON/OFF

Hold

OFF/PEAK/BOTTOM

Display direction

STANDARD/REVERSE

 *)

 :

Each channel 

 〜 :

Both channels 

  

Setting standard procedures 

 (The following settings can be made.)

6. 1 Selecting functions

(1)Set the mode selector to the SET position. 
(2)Hold down     key for 2 seconds or longer to select a desired function.

(3)Press     key to set the mode.

Sensitivity setting
(TEACH)

Used to do the
teaching.

Hold down
2 sec or
longer

Hold down
2 sec or
 longer

Operation
mode

Used to change 
the operation 
mode

Detection
function

Used to change 
the detection 
function.

Timer

Used to set the
o f f - d e l a y 
timer.

Flashing

Used to get the
spot flashing in
the SET mode.

Hold

Used to keep 
the digital data 
displayed.

Display
diection

Used to set the 
digital display 
direction.

■ 

OPERATION PROCEDURE

 

Hold down

2 sec or longer

MODE

Hold down

2 sec or longer

MODE

MODE

MODE

MODE

MODE

Hold down
2 sec or
longer

M

O
D
E

MODE

Hold down
2 sec or
longer

MODE

MODE

Hold down
2 sec or
longer

Hold down
2 sec or
longer

Hold down
2 sec or
longer

MODE

(1)Set the mode selector to the RUN position. 

(Make sure it's the degital light amount.)

(2)To show

0

on the display, hold down the key 

 for 1 second or longer.

  *

Each time do this, 

0

is on the display.

  *

The threshold level will sift same time.

(3)Hold down the key 

 and the key 

 same time for 1 second or longer

to cancel the zero reset. (Return to its former state.)

AD

J

1

2

AD

J

SET

TEA

CH

MODE

RUN

AD
J

AD
J

SET

TEA

CH

MODE

RUN

1

2

AD
J

AD
J

SET

TEA

CH

MODE

RUN

1

2

AD
J

AD
J

SET

TEA

CH

MODE

RUN

1

2

AD
J

AD
J

SET

TEA

CH

MODE

RUN

1

2

AD
J

AD
J

SET

TEA

CH

MODE

RUN

1

2

AD
J

AD
J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

1

2

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

C

H

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

AD

J

AD

J

SET

TEA

CH

MODE

RUN

1

2

 

Each channel

Both channels

Both channels

* 1 1 4 6 8 0 6 - 8 A *

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