R
Auto-Tuning Fiber-Optic Sensor
High Performance DC Amplifier with
Pushbutton Sensitivity Adjustment
H
Maintenance is made easier with
pushbutton sensitivity adjustment
E3X-N
H
Sensing distance is up to 100% longer
than standard amplifiers
H
Choose either single channel or four
channel models
H
Compact housing: 32 mm and 10 mm
housing widths
H
Four amplifiers in a single housing
saves space and wiring
H
Four fiber-optic cables can be mounted
directly next to each other without
mutual interference
Ordering Information
J
AMPLIFIERS
Type
Off-delay timer
Remote teach input
Part number
NPN output
PNP output
Single channel
None
None
E3X-NT11
E3X-NT41
Provided
Provided
E3X-NT21
E3X-NT51
Four channel
Provided
Provided
E3X-NM11
E3X-NM41
J
FIBER-OPTIC CABLES
Please see the E32 Fiber-Optic Cables section.
J
ACCESSORIES
Description
Replacement protective cover for E3X-NTjj
Replacement protective cover for E3X-NMjj
Part number
E39-G8
E39-G9
2
E3X-N
E3X-N
Specifications
Description
Part number
Supply voltage
Current consumption
Required fiber-optic cables
Light source
Operation mode
Sensitivity
Mutual interference protection
Remote teach option
Control
p
output
DC solid state
Type
Max. load
Max.
ON-state
voltage
drop
Response time
Timing functions
Circuit protection
Teaching confirmation function
Indicators
Materials
Mounting
Connections
Weight
Enclosure ratings
g
UL
NEMA
IEC
Approvals
pp
Ambient temperature
p
UL
CSA
Pre leaded
Pre-leaded
Case
Cover
NPN
PNP
General-purpose
E3X-NT11
E3X-NT41
50 mA max.
Please see the E32 Fiber-Optic Cables section.
Pulse modulated red LED (680 nm)
Light-ON, Dark-ON (switch selectable)
Pushbutton setting (see operation section)
Provided
—
NPN open collector
PNP open collector
100 mA, 30 VDC max.
1 VDC max. at 100 mA
Provided
Multi-function
E3X-NT21
E3X-NT51
Four-channel
E3X-NM11
E3X-NM41
150 mA max.
12 to 24 VDC
±10%,
10% ripple max.
500
µs
max. at rated detection distance
—
OFF: delay, 40 ms, selectable ON or OFF
Output short circuit protection, DC power reverse polarity protection
Indicators (red/green LED) and buzzer
Operation (orange LED) and output stability (green LED)
PBT plastic
Polycarbonate
DIN-rail track, or on flat surface through holes in bracket (provided)
3 conductor cable,
2 m (6.5 ft)
—
—
IP 50 (with cover on)
—
—
Operating: --25°C to 55°C (--13°F to 131°F) with no ice buildup
Storage: --40°C to 70°C (--40°F to 158°F)
4 conductor cable,
2 m (6.5 ft)
7 conductor cable,
2 m (6.5 ft)
100 g (3.5 oz.) with 2 m cable
3
E3X-N
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OUTPUT CIRCUIT DIAGRAMS
E3X-NT11
Teaching indicator
(red/green)
Operation
indicator
(orange)
Stability
indicator
(green)
E3X-N
E3X-NT21
Brown
Black
Load
Control
output
12 to
24 VDC
Operation
indicator
(orange)
Stability
indicator
(green)
Teaching indicator
(red/green)
Brown
Black
Load
Control
output
Blue
Pink
Remote
teaching input
12 to
24 VDC
Main
circuit
Blue
Main
circuit
E3X-NM11
x4
Operation
indicator
(orange)
x4
Stability
indicator
(green)
Teaching indicator
(red/green)
Brown
Black
White
Load
Load
Load
Channel no. Control output
wire color
Black
1
2
3
4
12 to 24 VDC
White
Grey
Orange
Control output
Main
circuit
Grey
Orange
Load
Control output
Control output
Control output
Blue
Pink
Remote
teaching input
E3X-NT41
Teaching indicator
(red/green)
Operation
indicator
(orange)
Stability
indicator
(green)
E3X-NT51
Brown
Operation
indicator
(orange)
Stability
indicator
(green)
Teaching indicator
(red/green)
Pink
Brown
Remote
teaching input
Control
output
Load
Blue
Main
circuit
Black
Control
output
Load
12 to
24 VDC
Main
circuit
Black
12 to
24 VDC
Blue
E3X-NM41
Teaching indicator
(red/green)
Pink
Brown
Black
Main
circuit
White
Control
output
Load
Control
output
Load
Load
12 to 24 VDC
Control
output
Load
Control
output
Remote
teaching input
x4
Operation
indicator
(orange)
Stability
indicator
(green)
x4
Grey
Orange
Blue
Channel no.
1
2
3
4
Control output
wire color
Black
White
Grey
Orange
4
E3X-N
E3X-N
Nomenclature
E3X-NT11 (NPN)
E3X-NT21 (NPN)
E3X-NT41 (PNP)
E3X-NT51 (PNP)
Operation indicator (orange)
Stability indicator (green)
Teaching indicator (red/green)
E3X-NM11 (NPN)
E3X-NM41 (PNP)
Four operation
indicators (orange)
Four stability
indicators (green)
Channel selector
Teaching button
Teaching button
Mode selector
Timer switch (see note)
Operation mode selector
Teaching
indicator (red/green)
Operation mode
selectors
Note: The E3X-NT11 or E3X-NT41 do
not have a timer function.
Mode selector
Operation
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CHOOSING THE RIGHT TEACHING METHOD
Refer to the following table to select the most suitable sensitivity setting method.
Teaching method
Typical application
Maximum sensitivity setting
Detection of the existence of
objects that interrupt light
perfectly
Detection of objects with no
background objects
No-object teaching
If teaching is impossible by
stopping the movement of
sensing objects
With/Without-object teaching
Detection of a slight difference in
reflection
Color discrimination
To detect bright or dark objects
Background objects with
by teaching only with background
unstable reflection
objects
Detection of object surface
irregularities
Elimination of background object influence
Note: 1. None of the four channels has any output when the E3X-NM (four channels) is in teaching mode (i.e., all the four channels will
be in teaching mode).
2. If the set distance is very short (i.e., 0 to 12 mm for the E32-TC200 and 0 to 4 mm for the E32-DC200), no-object teaching is
not possible due to excessive light, in which case, perform with/without-object teaching.
3. In principle, use the E3X-NM (four channels) for the close connection of a maximum of four Fiber Units. When closely connect-
ing two to three Fiber Units to more than one E3X-NT (one channel), perform with/without-object teaching, in which case teach-
ing must be performed on a single E3X-NT at a time. Therefore, turn on only the E3X-NT on which teaching is performed. If all
the E3X-NTs are turned on, interrupt the emitters of the Fiber Units on which teaching is not performed.
5
E3X-N
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MAXIMUM SENSITIVITY SETTING
E3X-N
Note: The sensitivity of the E3X-NT and E3X-NM are set to maximum before shipping. When resetting the sensitivity of the E3X-NT or
E3X-NM to maximum after no-object teaching or with/without-object teaching, follow the steps described below.
Procedure
1
2
Operation
Set the mode selector to TEACH.
E3X-NT
TEACH
E3X-NM
TEACH
TIMER
SET
RUN
Locate the sensor head within the rated sensing range with the E3X-Nj.
RUN
3
The flashing function of the E3X-Nj will be activated. Therefore,
adjust the optical axes so that the tip of the emitting fiber will be lit. If
the optical axes are divergent, the tip of the emitting fiber will flash
and the built-in buzzer of the E3X-Nj will beep.
Press the teaching button for three seconds minimum with or without
a sensing object. In the case of the E3X-NM, select a channel with the
channel selector, at which time the stability indicator for the selected
channel will flash.
The teaching indicator (red) turns green.
The built-in buzzer beeps once when the color of the teaching
indicator is red.
The built-in buzzer beeps continuously when the color of the teaching
indicator is green.
Note: The built-in buzzer will stop beeping when the teaching button
is no longer being pressed.
---
4
TEACH
TEACH
5
Set the mode selector to RUN to complete the sensitivity setting.
The teaching indicator is OFF.
Note: When the sensitivity is set to maximum, the sensitivity will be
automatically adjusted regardless of the set distances of the
fibers or light.
TEACH
RUN
TEACH
TIMER
SET
RUN
6
Select the logical output required with the operation mode selector.
L
ON
D
ON
CH 1
L ON
D ON
2
3
4
6
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