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E3T

Ultracompact, Ultrathin Photoelectric Sensor with Built-in Amplifier

E3T

The Improved E3T Series with Easier, Smoother Mounting and Installation

Sensors

M2-mounting Sensors

A set of mounting screws is included with the Sensor.

Sensing
method
Appearance Sensing distance
(Red light)
Operation
mode
Model
NPN output PNP output
Through-beam
(Emitter
+
Receiver) *1
409_lu_1_1 2 m (Red light)
(Sensitivity Adjustment
Unit can be used.)
Light-ON E3T-ST31 2M E3T-ST33 2M
Dark-ON E3T-ST32 2M E3T-ST34 2M
1 m (Red light)
(Sensitivity Adjustment
Unit can be used.)
Light-ON E3T-ST11 2M E3T-ST13 2M
Dark-ON E3T-ST12 2M E3T-ST14 2M
300 mm (Red light) Light-ON E3T-ST21 2M E3T-ST23 2M
Dark-ON E3T-ST22 2M E3T-ST24 2M
2 m (Infrared light) Light-ON E3T-ST31F 2M E3T-ST33F 2M
Dark-ON E3T-ST32F 2M E3T-ST34F 2M
1 m (Infrared light) Light-ON E3T-ST11F 2M E3T-ST13F 2M
Dark-ON E3T-ST12F 2M E3T-ST14F 2M
300 mm (Infrared light) Light-ON E3T-ST21F 2M E3T-ST23F 2M
Dark-ON E3T-ST22F 2M E3T-ST24F 2M
409_lu_1_2 500 mm (Red light) Light-ON E3T-FT11 2M E3T-FT13 2M
Dark-ON E3T-FT12 2M E3T-FT14 2M
300 mm (Red light) Light-ON E3T-FT21 2M E3T-FT23 2M
Dark-ON E3T-FT22 2M E3T-FT24 2M
500 mm (Infrared light) Light-ON E3T-FT11F 2M E3T-FT13F 2M
Dark-ON E3T-FT12F 2M E3T-FT14F 2M
300 mm (Infrared light) Light-ON E3T-FT21F 2M E3T-FT23F 2M
Dark-ON E3T-FT22F 2M E3T-FT24F 2M
Retro-
reflective
409_lu_1_3 Using the E39-R4 Reflector
provided 200 mm [30 mm] *2
Using the E39-R37-CA
100 mm [10 mm] *2
(Red light)
Light-ON E3T-SR41 2M *3 E3T-SR43 2M *3
Dark-ON E3T-SR42 2M *3 E3T-SR44 2M *3
Diffuse-
reflective
409_lu_1_4 5 to 30 mm (Red light) Light-ON E3T-FD11 2M E3T-FD13 2M
Dark-ON E3T-FD12 2M E3T-FD14 2M
Limited-
reflective
409_lu_1_5 5 to 15 mm (Red light) Light-ON E3T-SL11 2M E3T-SL13 2M
Dark-ON E3T-SL12 2M E3T-SL14 2M
5 to 30 mm (Red light) Light-ON E3T-SL21 2M E3T-SL23 2M
Dark-ON E3T-SL22 2M E3T-SL24 2M
BGS-
reflective
409_lu_1_6 1 to 15 mm (Red light) Light-ON E3T-FL11 2M E3T-FL13 2M
Dark-ON E3T-FL12 2M E3T-FL14 2M
1 to 30 mm (Red light) Light-ON E3T-FL21 2M E3T-FL23 2M
Dark-ON E3T-FL22 2M E3T-FL24 2M

M3-mounting Sensors

A set of mounting screws is not included with the Sensor. Order a Screw Set separately if required.

Sensing
method
Appearance Sensing distance
(Red light)
Operation mode Model
NPN output PNP output
Through-beam
(Emitter
+
Receive) *1
409_lu_2_1 1 m
(Red light)
Light-ON E3T-ST11M 2M E3T-ST13M 2M
Dark-ON E3T-ST12M 2M E3T-ST14M 2M
300 mm
(Red light)
Light-ON E3T-ST21M 2M E3T-ST23M 2M
Dark-ON E3T-ST22M 2M E3T-ST24M 2M
1 m
(Infrared light)
Light-ON E3T-ST11MF 2M E3T-ST13MF 2M
Dark-ON E3T-ST12MF 2M E3T-ST14MF 2M
300 mm
(Infrared light)
Light-ON E3T-ST21MF 2M E3T-ST23MF 2M
Dark-ON E3T-ST22MF 2M E3T-ST24MF 2M
Diffuse-
reflective
409_lu_2_2 5 to 30 mm
(Red light)
Light-ON E3T-FD11M 2M E3T-FD13M 2M
Dark-ON E3T-FD12M 2M E3T-FD14M 2M
Limited-
reflective
409_lu_2_3 5 to 15 mm
(Red light)
Light-ON E3T-SL11M 2M E3T-SL13M 2M
Dark-ON E3T-SL12M 2M E3T-SL14M 2M
5 to 30 mm
(Red light)
Light-ON E3T-SL21M 2M E3T-SL23M 2M
Dark-ON E3T-SL22M 2M E3T-SL24M 2M

*1. 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
*2. Values in parentheses indicate the minimum required distance between the Sensor and Reflector.
*3. Models are available either with or without the E39-R37-CA Reflector included.
       Models with E39-R37-CA Reflector: E3T-SR4[]-S
       Models without Reflector: E3T-SR4[]-C

Small Cylindrical Sensors

A set of mounting nuts is included with the Sensor.

Sensing method Appearance Sensing distance Operation mode Model
NPN output PNP output
Through-beam
(Emitter
+
Receive)
409_lu_3_1
1 m
(Red light)
Light-ON --- ---
Dark-ON E3T-CT12 2M E3T-CT14 2M
409_lu_3_2
500 mm
(Red light)
Light-ON --- ---
Dark-ON E3T-CT22S 2M E3T-CT24S 2M
Diffuse-
reflective
(with adjuster)
409_lu_3_3
3 to 50 mm
Infrared light
Light-ON E3T-CD11 2M E3T-CD13 2M
Dark-ON --- ---

Accessories (Order Separately)

Accessories for M2-mounting Sensors

These accessories are not included with the Sensor. Order them separately if required.

Name Applicable
Sensor
Model Quantity Remarks
Slit for Through-
beam Side-view
Sensors
0.5 dia. E3T-ST3[][] E39-S63 2
(One each for
Emitter and
Receiver;
common with
Slit widths of
1 dia. And
0.5 dia.)
Sensing distance 200 mm,
Minimum detectable object (reference value)
0.5-mm dia.
E3T-ST1[][] Sensing distance 100 mm,
Minimum detectable object (reference value)
0.5-mm dia.
E3T-ST2[][] Sensing distance 30 mm,
Minimum detectable object (reference value)
0.5-mm dia.
1 dia. E3T-ST3[][] Sensing distance 600 mm,
Minimum detectable object (reference value)
1-mm dia.
E3T-ST1[][] Sensing distance 300 mm,
Minimum detectable object (reference value)
1-mm dia.
E3T-ST2[][] Sensing distance 100 mm,
Minimum detectable object (reference value)
1-mm dia.
Slit for Through-
beam Flat Sensors
0.5 dia. E3T-FT1[][] E39-S64 Sensing distance 50 mm,
Minimum detectable object (reference value)
0.5-mm dia.
E3T-FT2[][] Sensing distance 30 mm,
Minimum detectable object (reference value)
0.5-mm dia.
1 dia. E3T-FT1[][] Sensing distance 100 mm,
Minimum detectable object (reference value)
1-mm dia.
E3T-FT2[][] Sensing distance 50 mm,
Minimum detectable object (reference value)
1-mm dia.
Sensitivity Adjustment Unit
for Through-beam Side-view
Sensors with Red Light
E3T-ST3[] E39-E10 1 Sensing distance (reference value)
1,200 to 1,800 mm
E3T-ST1[] Sensing distance (reference value)
300 to 800 mm
Mounting Brackets for Side-
view Sensors *1
E3T-S[][][][] E39-L116 1 Nut plate provided
E39-L117
E39-L118
Mounting Brackets for Flat
Sensors *1
E3T-F[][][][] E39-L119 ---
E39-L120
Screw Set for Side-view
Sensors *2 *3
E3T-S[][][][] E39-L164 2 for each Material: Iron (Same type as provided with the
Sensor.)
Contents: Set screws (M2×14), Hexagonal nuts
Screw Set for Flat Sensors
*2 *3
E3T-F[][][][] E39-L165 Material: Iron (Same type as provided with the
Sensor.)
Contents: Set screws (M2×8), Hexagonal nuts
SUS Screw Set for Flat
Sensors *2
E3T-F[][][][] E39-L172 2 Material: SUS304
Contents: Bolt with hexagonal hole (M2×6)
SUS Screw Set for Side-
view Sensors *2
E3T-S[][][][] E39-L173 2 for each Material: SUS304
Contents: Bolt with hexagonal hole (M2×12),
Hexagonal nuts, Spring washers, Flat washers

*1. When using Through-beam Sensors (E3T-ST[][], E3T-FT[][]), order one Bracket for the Emitter and one for the
       Receiver.
*2. Order two Sets, one for the Emitter and one for the Receiver, for Through-beam Sensors (E3T-ST[][] or E3T-FT[][]).
       This is the Screw Set for mounting the Sensor to the Mounting Bracket. Order this Set if you lose the screws. Do not
       use this Screw Set to mount the Mounting Bracket to the equipment.
*3. This is included with the Sensor.

Accessories for M3-mounting Sensors

These accessories are not included with the Sensor. Order them separately if required.

Name Applicable
Sensor
Model Quantity Remarks
Slits for Through-
beam Side-view
Sensors
0.5 dia. E3T-ST1[]M[] E39-S76A 2
(One each for
Emitter and
Receiver)
Sensing distance 100 mm,
Minimum detectable object (reference value)
0.5-mm dia.
E3T-ST2[]M[] Sensing distance 30 mm,
Minimum detectable object (reference value)
0.5-mm dia.
1 dia. E3T-ST1[]M[] E39-S76B Sensing distance 300 mm,
Minimum detectable object (reference value)
1-mm dia.
E3T-ST2[]M[] Sensing distance 100 mm,
Minimum detectable object (reference value)
1-mm dia.
Mounting Bracket for Side-
view Sensors *1
E3T-S[][][]M[] E39-L166 1 Nut plate provided
Mounting Bracket for Flat
Sensors
E3T-FD[][]M E39-L167 ---
Back-mounting Spacer for
Flat Sensors
E39-L168 Use this Spacer when mounting a Flat Sensor
(E3T-FD[][]M) from the back.
SUS Screw Set for Flat
Sensors *2
E3T-FD[][]M E39-L170 2 Material: SUS304
Contents: Bolt with hexagonal hole (M3×6)
SUS Screw Set for Side-
view Sensors *2 *3
E3T-S[][][]M[] E39-L171 2 for each Material: SUS304
Contents: Bolt with hexagonal hole (M3×15),
Hexagonal nuts, Spring washers, Flat washers

*1. When using Through-beam Sensors (E3T-ST[][]M[]), order one bracket for the Emitter and one for the Receiver.
*2. This is the Screw Set for mounting the Sensor to the Mounting Bracket. Order this Set if you loose the screws. Do not
       use this Screw Set to mount the Mounting Bracket to the equipment.
*3. Order two Sets, one for the Emitter and one for the Receiver, for Through-beam Sensors (E3T-ST[][]M[]).

Accessories for Small Cylindrical Sensors

Name Applicable
Sensor
Model Quantity Remarks
SUS Nut Set for Through-
beam Sensors *
E3T-CT[][]
E3T-CT[][]S
E39-M5 4 (Hexagonal nuts),
2 (Toothed washers)
Material: SUS303
(Same type as provided with the Sensor.)
SUS Nut Set for Diffuse-
reflective Sensors
E3T-CD[][] E39-M6 2 (Hexagonal nuts),
1 (Toothed washers)
Adjustment Driver for
Diffuse-reflective Sensors
E39-G17 1 This Driver is used to turn the sensitivity
adjuster.
Provided with E3T-CD[][]

* This Nut Set is for the Emitter/Receiver. This is the Nut Set for mounting the Sensor. Order this Set if you lose the
  screws.

Accessories for All Sensors

Name Applicable
Sensor
Model Quantity Remarks
Small Reflectors
(for Retro-reflective Sensors)
E3T-SR4[] E39-R4 1 Sensing distance 200 mm [30 mm] *1
Minimum detectable object 2-mm dia.
Provided with the E3T-SR4[]
E3T-SR4[]-S E39-R37-CA *2 Sensing distance 100 mm [10 mm] *1
Minimum detectable object 2-mm dia.
Provided with the E3T-SR4[]-S
Tape Reflectors
(for Retro-reflective Sensors)
E3T-SR4[]-C E39-RS1-CA *2 Sensing distance 100 mm [10 mm] *1
Minimum detectable object 2-mm dia.
Use Tape Reflectors in combination with
the E3T-SR4[]-C, which does not come
with a Reflector.
E39-RS2-CA *2
E39-RS3-CA *2

*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.