Photoelectric Sensor with Built-in Amplifier (Ultracompact and Thin Type)
E3T
CSM_E3T_DS_E_6_1
New Retro-reflective Sensors
Added to the Series. Further
Contributions to Equipment
Downsizing.
• Coaxial Retro-reflective for reliable positioning applications.
• Series now includes BGS* reflective model with black/white error
of 15%
• Easy optical axis adjustment with emitter axis accuracy of ±2°
(Through-beam Model)
• Noise and external light resistance enhanced to that of E3Z or
equivalent
• Output reverse polarity protection provides reliable support
against incorrect wiring.
• The Series includes models with M12 Smartclick pre-wired
connectors (-M1TJ)
* BGS (Background Suppression) technology prevents detecting background objects.
Be sure to read
Safety Precautions
on
page 14.
Features
E3T-SR4@
: Retro-reflective Sensor with Enhanced
Compactness and High Performance
• Perform detection from a small hole.
With a coaxial optical system, the lens diameter is only 2 mm.
Sufficient incident light is obtained even through a small hole.
The Coaxial Retro-reflective Sensor can be used for reliable application with positioning.
• Improved Stability of Short-distance Detection
A detection distance as short as 10 mm can be used with a Tape Reflector.
Detection is stable through a hole whether the distance is 10 mm or 100 mm (except in combination with the
E39-R4).
E3T-FL1@/-FL2@: The Slimmest BGS (Background Suppression) Reflective Photoelectric
Sensors in the World
Ultra slim at 3.5 mm and
black/white error of only
15%.
For example, the E3T-
FL1@ can stably detect a
black object at 12 mm
without being affected by a
white background at
20 mm.
OMRON provides BGS
performance sharper than
the previous Convergent-
reflective Sensors.
E3T-FL1
20mm
Not detected
15mm
Rated sensing distance
12mm
Detected
Dramatic Improvement in Black/White Error
(mm) 25
20
15
10
5
Black
object
3.5mm
White
background
0
White paper Black paper White paper Black paper
E3T-FL1
(BGS Reflective Model)
E3T-SL1
(Convergent-reflective Model)
1
E3T
Ordering Information
Sensors
(Refer to
Dimensions
on page 15.)
Sensing
method
Appearance
Connection
method
Sensing
distance
Operation
mode
Light-ON
Dark-ON
Light-ON
Red light
Model
NPN output
E3T-ST11 2M
E3T-ST12 2M
E3T-ST21 2M
E3T-ST22 2M
E3T-FT11 2M
E3T-FT12 2M
E3T-FT21 2M
E3T-FT22 2M
E3T-SR41 2M
*4
PNP output
E3T-ST13 2M
E3T-ST14 2M
E3T-ST23 2M
E3T-ST24 2M
E3T-FT13 2M
E3T-FT14 2M
E3T-FT23 2M
E3T-FT24 2M
E3T-SR43 2M
*4
1m
Side-view
(Sensitivity Adjustment
Unit can be used.)
300 mm
Through-beam
(Emitter +
Receiver)
*2
Flat
Dark-ON
Light-ON
500 mm
Dark-ON
Light-ON
300 mm
Dark-ON
Side-view
Retro-
reflective
*3
Pre-wired (2 m)
Flat
Diffuse-
reflective
Using the E39-R37-CA
Using the E39-R4 Reflector
provided
200 mm [30 mm]
*1
Light-ON
Dark-ON
E3T-SR42 2M
*4
E3T-SR44 2M
*4
100 mm [10 mm]
*1
Light-ON
E3T-FD11 2M
E3T-FD13 2M
5 to 30 mm
Dark-ON
E3T-FD12 2M
E3T-SL11 2M
E3T-SL12 2M
E3T-SL21 2M
E3T-SL22 2M
E3T-FL11 2M
E3T-FL12 2M
E3T-FL21 2M
E3T-FL22 2M
E3T-FD14 2M
E3T-SL13 2M
E3T-SL14 2M
E3T-SL23 2M
E3T-SL24 2M
E3T-FL13 2M
E3T-FL14 2M
E3T-FL23 2M
E3T-FL24 2M
Side-view
Convergent-
reflective
Light-ON
5 to 15 mm
Dark-ON
Light-ON
5 to 30 mm
Dark-ON
Light-ON
Flat
1 to 15 mm
BGS
reflective
Dark-ON
Light-ON
1 to 30 mm
Dark-ON
*1. Values in parentheses indicate the minimum required distance between the Sensor and Reflector.
*2. The model number of the Emitter is expressed by adding an "L" to the set model number in the table. Example: E3T-ST11-L 2M
The model number of the receiver is expressed by adding a "D" to the set model number in the table. Example: E3T-ST11-D 2M
Orders for individual Emitters and Receivers are accepted. (Modifications are required for some models.)
*3. Ask your OMRON representative about the previous Retro-reflective Sensors: E3T-SR2@ and E3T-SR3@.
*4. Models are available either with or without the E39-R37-CA Reflector included.
Model with E39-R37-CA Reflector: E3T-SR4@-S
Model without Reflector: E3T-SR4@-C
2
E3T
Variety of Connection Specifications
The models with the connection specifications marked with a black circle in the table are available. The model number indication is a combination
of the basic model and the connection specification.
Example:
E3T-ST11-M1TJ 0.3M
Basic model
number
Connection
specification
NPN Output
Model
Model
number
example
Connec-
tion speci-
fication
Basic
model
number
E3T-ST11
E3T-ST12
E3T-ST21
E3T-ST22
E3T-FT11
E3T-FT12
E3T-FT21
E3T-FT22
E3T-SR41
E3T-SR42
E3T-FD11
E3T-FD12
E3T-SL11
E3T-SL12
E3T-SL21
E3T-SL22
E3T-FL11
E3T-FL12
E3T-FL21
E3T-FL22
E3T-ST11-M1TJ
0.3M
M12 pre-wired
Smartclick Con-
nector (cable
length: 0.3 m)
-M1TJ 0.3M
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
E3T-ST11 5M
E3T-ST11R 2M
E3T-ST11-ECON
0.3M
e-CON pre-wired
connector (cable
length: 0.3 m)
E3T-ST11-ECON
2M
e-CON pre-wired
connector (cable
length: 2 m)
Sensing
method
Sensing
distance
Operation
mode
Pre-wired (cable
length: 5 m)
Pre-wired robot
(cable length: 2 m)
5M
●
●
●
●
●
●
---
---
●
●
●
●
●
●
●
●
---
---
---
---
R 2M
●
●
---
---
●
●
---
---
●
●
●
●
●
●
●
●
●
●
●
●
-ECON 0.3M
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
---
---
●
---
-ECON 2M
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
---
---
---
---
Through-
beam (side-
view)
1m
Light-ON
Dark-ON
Light-ON
Dark-ON
Light-ON
Dark-ON
Light-ON
Dark-ON
300 mm
500 mm
Through-
beam (flat)
300 mm
Retro-
reflective
Diffuse-
reflective
Light-ON
200 mm
(100 mm) Dark-ON
5 to
30 mm
5 to
15 mm
5 to
30 mm
1 to
15 mm
1 to
30 mm
Light-ON
Dark-ON
Light-ON
Dark-ON
Light-ON
Dark-ON
Light-ON
Dark-ON
Light-ON
Dark-ON
Convergent-
reflective
BGS reflec-
tive
* The sensing distance depends on the Reflector that is used. The sensing distance is 200 mm if an E39-R4 is used and 100 mm if an E39-R37-CA is used.
PNP Output
Model
Model
number
example
Connec-
tion speci-
fication
Basic
model
number
E3T-ST13
E3T-ST14
E3T-ST23
E3T-ST24
E3T-FT13
E3T-FT14
E3T-FT23
E3T-FT24
E3T-ST13-M1TJ
0.3M
M12 pre-wired
Smartclick Con-
nector (cable
length: 0.3 m)
-M1TJ 0.3M
●
●
●
●
●
●
●
●
E3T-ST13 5M
E3T-ST13R 2M
Sensing
method
Sensing
distance
Operation
mode
Pre-wired (cable
length: 5 m)
Pre-wired robot
(cable length: 2 m)
5M
●
●
R 2M
●
●
Through-
beam (side-
view)
1m
Light-ON
Dark-ON
Light-ON
300 mm
Dark-ON
500 mm
Light-ON
Dark-ON
Light-ON
300 mm
Dark-ON
---
---
●
●
---
---
●
●
Through-
beam (flat)
---
●
---
---
3
E3T
Model
number
example
Connec-
tion speci-
fication
Basic
model
number
E3T-SR43
E3T-SR44
E3T-FD13
E3T-FD14
E3T-SL13
E3T-SL14
E3T-SL23
E3T-SL24
E3T-FL13
E3T-FL14
E3T-FL23
E3T-FL24
E3T-ST13-M1TJ
0.3M
M12 pre-wired
Smartclick Con-
nector (cable
length: 0.3 m)
-M1TJ 0.3M
●
●
●
●
●
●
●
●
●
●
●
●
Model
E3T-ST13 5M
E3T-ST13R 2M
Sensing
method
Sensing
distance
Operation
mode
Pre-wired (cable
length: 5 m)
Pre-wired robot
(cable length: 2 m)
5M
●
●
●
●
●
●
●
●
R 2M
●
●
●
●
●
●
●
●
●
●
●
●
Retro-
reflective
Diffuse-
reflective
Light-ON
200 mm
(100 mm) Dark-ON
5 to
30 mm
5 to
15 mm
5 to
30 mm
1 to
15 mm
1 to
30 mm
Light-ON
Dark-ON
Light-ON
Dark-ON
Light-ON
Dark-ON
Light-ON
Dark-ON
Light-ON
Dark-ON
Convergent-
reflective
---
---
---
---
BGS reflec-
tive
* The sensing distance depends on the Reflector that is used. The sensing distance is 200 mm if an E39-R4 is used and 100 mm if an E39-R37-CA is used.
4
E3T
Accessories (Order Separately)
Slits
(Refer to
Dimensions
on page 18.)
Slit width
0.5-mm dia.
30 mm (E3T-ST2@)
E39-S63
300 mm (E3T-ST1@)
1-mm dia.
100 mm (E3T-ST2@)
50 mm (E3T-FT1@)
0.5-mm dia.
30 mm (E3T-FT2@)
E39-S64
100 mm (E3T-FT1@)
1-mm dia.
50 mm (E3T-FT2@)
1-mm dia.
0.5-mm dia.
1-mm dia.
One each for Emitter and
Receiver; common with Slit
widths of 1 dia. and 0.5 dia.
(total of 2)
Plug-in type round slits
Can be used with E3T-FT@@
Through-beam Models.
Sensing distance
(typical) (Sensor model)
100 mm (E3T-ST1@)
0.5-mm dia.
Plug-in type round slits
Can be used with E3T-ST@@
Through-beam Models.
Minimum detectable
object (typical)
Model
Quantity
Remarks
Reflectors
(Refer to
Dimensions
on page 17.)
Name
Small
Reflectors
Tape
Reflectors
Recommended
Minimum
Sensing distance
Sensor
detectable object
E3T-SR4@
200 mm (30 mm)
*1
E3T-SR4@-S
100 mm (10 mm)
*1
2-mm dia.
E3T-SR4@-C
100 mm (10 mm)
*1
Model
E39-R4
E39-R37-CA
*2
E39-RS1-CA
*2
E39-RS2-CA
*2
E39-RS3-CA
*2
Quantity
Remarks
Provided with the E3T-SR4@
Provided with the E3T-SR4@-S
1
Use Tape Reflectors in combina-
tion with the E3T-SR4@-C, which
does not come with a Reflector.
*1. Values in parentheses indicate the minimum required distance between the Sensor and Reflector.
*2. The E3T-SR4@ cannot be used with the E39-R37 or E39-RS1/2/3 (without CA) Tape Reflectors.
The E39-@-CA Reflector is for use only with the E3T-SR4@. It cannot be used with other Sensors.
Sensitivity Adjustment Unit
(Refer to
Dimensions
on page
18.)
Sensing
Appearance distance
(typical)
300 to
800 mm
Model
Quantity
Remarks
Can be used with
the E3T-ST1@
Through-beam
Models.
Mounting Brackets
(Refer to
Dimensions
on page 18.)
Appearance
Model
E39-L116
Can be used with the
E3T-S@@@ Side-view
Models. (A securing nut
plate is provided with the
Mounting Bracket.)
1
Quantity
Remarks
E39-L117
E39-E10
1
E39-L118
E39-L119
Can be used with the
E3T-F@@@ Flat Models.
E39-L120
Note:
When using Through-beam models, order one bracket for the
Receiver and one for the Emitter.
Sensor I/O Connectors
(For M12, refer to
XS5.
For e-CON, contact your OMRON representative.)
Size
M12
(For -M1TJ
models)
Cable
Standard
Straight
5m
Connector on one end
432 1
Appearance
Cable type
2m
4-wire
Model
XS5F-D421-D80-A
XS5F-D421-G80-A
E39-ECON2M
E39-ECON5M
2m
5m
0.5 to 1 m
1.1 to 1.5 m
12 3 4
e-CON
Standard cable
Connector on both ends
432 1
4-wire
E39-ECONW@M
Replace
@
with the cable length in
0.1-m increments.
1.6 to 2 m
Note:
When using Through-beam models, order one connector for the Receiver and one for the Emitter.
5
NXP MCU
