Omron E3X-NH User Manual
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High-Precision Fiber-optic Amplifier E3X-NH
TheE3X-NHEmploysa16-Bit
Processor as An Industry First
An Automatic Sensitivity Adjustment
H
feature allows stable detection of
objects in frequently changing
environments
H Three teach modes for optimal sensing
H 8-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)
H A manual fine tuning sensitivity feature
allows 13 threshold adjustments using
an easy-to-read digital scale
H Ideal for detecting small objects or fine
wires
H NPN/PNP types available
Ordering Information
J AMPLIFIER 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
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)
Control
output
Alarm output
NPN open collector,
load current: 50 mA
max., res
1Vmax.
PNP open collector,
load current: 50 mA
age:
max., res
1Vmax.
NPN open collector,
load current: 50 mA
age:
max., res
1Vmax.
PNP open collector,
load current: 50 mA
age:
max., res
1Vmax.
age:
2
E3X-NH
p
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
Circuit protection Output short-circuit protection, reverse polarity on supply
Operation mode Light ON and Dark ON, switch-selectable
Ambient light immunity
Ambient temperature
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
Insulation resistance 20 MΩ min. (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
Weight (with 2 m cable) Approx. 100 g
Accessory Mounting brackets (included)
Incandescen
tlamp
Sunlight 10,000 ℓxmax.
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
Case PBT
Cover Polycarbonate
threshold indicator (red LED)
3,000 ℓxmax.
Z directions
3
E3X-NH
Nomenclature
J E3X-NH11
Operation Indicator (orange)
Lit when output is ON.
Incident Level Indicators
(green, 8 levels)
Lit depending on the incident
light amount.
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.
Threshold Indicators
(red, 13 levels)
Indicates threshold level.
SET Button
For teaching or for fine threshold adjustment
Mode Selector
Switchable among TEACH, ADJ, and
RUN modes.
E3X-NH
Operation
J OUTPUT CIRCUITS
E3X-NH11 (NPN output)
Brown
Load
Photoelectric
sensor
main
circuit
Black
Orange
Blue
Control
output
Alarm output
Load
12 to 24 VDC
J OPERATION MODE
Light-ON Dark-ON
Light received
Light not received
Operation indicator
(orange)
Output
transistor
Load (relay) Operate
ON
OFF
ON
OFF
Release
(Between brown and black)
PNP circuits
Photoelectric
sensor
main
circuit
Light received
Light not received
Operation indicator
(orange)
Output
transistor
Load (relay) Operate
ON
OFF
ON
OFF
Release
(Between brown and black)
Brown
Control output
Black
Alarm
output
Orange
Blue
12 to 24 VDC
Load
Load
4
E3X-NH
E3X-NH
J SENSITIVITY 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
Sensing Slight Differences
Sensitivity Setting
Without Objects
Application Examples
Detection of a passing object with
through-beam fibers.
Checking IC Tray Arrangements
E3X-NH
Sensitivity Setting
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
E32-T16P
E3X-NH
Maximum Sensitivity Setting One-point Teach ModeTwo-point Teach Mode
Fine-tuning, if required.
Film sheet
Application Examples
Detection of minute passing objects.
Detection of lead wires.
High-precision positioning.
Detecting Lead Frame Position
Lead frame
E32-D32
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
E32-T24
E3X-NH
Detecting
Cassette Tape Cases
Ensuring reliable detection
without being influenced by
the difference in color or
mark.
E32-L25A
Sensitivity Adjustment (Fine-tuning)
Manual-tuning (Fine Sensitivity Adjustment)
E3X-NH
3.3 mm
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
E32-T16P
E3X-NH
Counting
Number Of Pills
Auto-tuning (Automatic Sensitivity Compensation)
5
E3X-NH
E3X-NH
J SENSITIVITY 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-object 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.
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 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.
Press once for 0.5 to 2.5 s
Through-beam Model
Light is
interrupted.
Diffuse Model
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.
Diffuse Model
Mark
Base
6
Press once for 0.5 to 2.5 s
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