Omron E3H2 DATASHEET
Miniature photoelectric sensors in cylindrical M8 and M12 housing
E3H2
• M8 or M12 sized cylindrical housings
when mounting space is crucial
• Retro-reflective models with two
teaching modes for standard and
semi-transparent objects
• pre-wired and connector models
Ordering Information
M12 cylindrical housing
Sensor type Sensing
distance
Through-beam 4 m
(adjustable)
Retro-reflective
with M.S.R.
Diffuse-reflective
*1.
Models without teach-button are available. Contact your OMRON representative.
*2.
Without reflector; order reflector separately
2m
(teachable
300 mm
(teachable)
100 mm
(fixed)
Operation mode Connection method Order code
light on / dark on
selectable
*1
)
––2m–
– ––
––2m–
– ––
––2m–
– ––
––2m–
– ––
M8 cylindrical housing
Sensor type Sensing
distance
Operation mode Connection method Order code
NPN output PNP output
E3H2-T4C4M 2M E3H2-T4B4M 2M
E3H2-T4C4M-M1 E3H2-T4B4M-M1
E3H2-R2C4M 2M
E3H2-R2C4M-M1
E3H2-DS30C4M 2M E3H2-DS30B4M 2M
E3H2-DS30C4M-M1 E3H2-DS30B4M-M1
E3H2-DS10C4M 2M E3H2-DS10B4M 2M
E3H2-DS10C4M-M1 E3H2-DS10B4M-M1
NPN output PNP output
*2
E3H2-R2B4M 2M
*2
E3H2-R2B4M-M1
*2
*2
Through-beam 2 m dark on
light on
––2m–
–––
––2m–
–––
E3H2-T2C2S 2M E3H2-T2B2S 2M
E3H2-T2C2S-M5 E3H2-T2B2S-M5
E3H2-T2C1S 2M E3H2-T2B1S 2M
E3H2-T2C1S-M5 E3H2-T2B1S-M5
1E3H2
Accessories
Reflectors
Shape Type Material Features Size in mm Applicable Sensor Order code
General purpose
reflectors
Small size Surface screw
-ABS base
- Acrylic
surface
Surface screw
mounting
(diagonal holes)
mounting
60x40x7.5 - Retro-reflective photo-
electric sensors – non
polarizing
- Retro-reflective photo-
23x13.7x4.9 E39-R4
electric sensors – polarizing (MSR)
E39-R1S
Simple mounting Round shape
with centered
mounting hole
for simple screw
mounting
General purpose
tape reflectors
- Acrylic Self adhesive
Pre cut
Diameter: 84
Depth: 7.4
40x35x0.6 E39-RS2
Sensor I/O connectors
Size Shape Type Features Material Order code
Nut Cable
M8 General pur-
pose
(screw)
M12 General pur-
pose
(screw)
Note: For the complete list of sensor I/O connectors refer to E26E Accessories datasheet.
3 pin (LED
optionally)
3 wire (LED
optionally)
4 wire PVC 2 m
Brass (CuZn) PVC 2 m
PUR 2 m
Brass (CuZn) PVC 2 m
PUR 2 m
PUR 2 m
XS3F-M08PVC3S2M
XS3F-M08PUR3S2M
XS2F-M12PVC3S2M
XS2F-M12PUR3S2M
XS2F-M12PVC4S2M
XS2F-M12PUR4S2M
E39-R7
XS3F-M08PVC3A2M
XS3F-M08PUR3A2M
XS2F-M12PVC3A2M
XS2F-M12PUR3A2M
XS2F-M12PVC4A2M
XS2F-M12PUR4A2M
2 Miniature Photoelectric Sensors
Specifications
Item Through-beam Retro-reflective with
M.S.R.
E3H2-T4 E3H2-T2 E3H2-R E3H2-DS30 E3H2-DS10
Sensing distance 4 m (adjustable) 2 m 2 m (teachable)
(when using E39R1S)
Differential travel 20% max of sensing
distance
Light source
(wave length)
Power supply
voltage
Current consumption 45 mA max
Control output Load current: 100 mA max. (residual voltage 2 V max.);
Protective circuits Power supply reverse polarity protection, output short circuit protection
Response time Operation or reset:
Sensitivity
adjustment
Ambient illumination Incandescent lamp: 1500 lx max.; Sunlight: 5000 lx max.
Ambient temperature Operating:
Degree of protection EN 60529: IP67
Indicators Emitter: Power supply indicator: yellow
Weight
pre-wired
connector
Material
case
lens
Infrared LED (880 nm) Red LED (660 nm) Infrared LED (880 nm)
10 to 30 VDC, 10% ripple
E3H2-_C_: NPN
E3H2-_B_: PNP
Light-on/dark-on
selectable by wire
2.5 ms max
Potentiometer
adjuster
-25 to +55°C
Receiver: Operation indicator: yellow
approx 110 g
approx 40 g
nickel-plated brass
plastic
10% max of sensing distance
E3H2-T2_2_: dark
on
E3H2-T2_1_: light
on
Operation or reset:
1 ms max.
–Teach-in –
Operating:
-25 to +50°C
approx 90 g
approx 30 g
stainless steel
plastic
Light-on/dark-on selectable by wire
Operation or reset: 1.1 ms max
Operating: -25 to +55°C
Output indicator: yellow
approx 55 g
approx 20 g
nickel-plated brass
plastic
Diffuse-reflective
300 mm
(teachable)
100 mm (fixed)
3E3H2
Operation
Sensitivity adjustment
E3H2-T4
The emitter of the E3H2-T4 allows an adjustment of the emitted
amount of light by turning the potentiometer. Turn the potentiometer clockwise for increasing the amount of emitted light and
counter-clockwise for decreasing the amount of emitted light.
E3H2-R2
a) standard mode
To teach the retro-reflective model E3H2-R, place the sensor
with the lens facing the reflector. Press the teach button for 25 seconds. For remote teach connect the white wire (Pin 2) for
2-5 seconds to common (-).
The threshold is now set to 50% of the received light level.
b) high sensitivity mode (e.g. for semi-transparent models)
To teach the retro-reflective model E3H2-R in high sensitivity
mode, place the sensor with the lens facing the reflector.
Press the teach button for >8 seconds. For remote teach connect the white wire (Pin 2) for >8 seconds to common (-).
The threshold is now set just below the received light level.
If the teaching was successful the LED should no longer be flashing and a state change occurs when the light is interrupted.
E3H2-DS30
a) standard mode
To teach the diffuse-reflective model E3H2-DS30, place the
object in front of the sensor at the required sensing distance.
Press the teach button for 2-5 seconds. For remote teach
connect the white wire (Pin 2) for 2-5 seconds to common (-).
The threshold is now set to 50% of the received light level.
When the object is removed, a state change at the sensor
should occur. If this is not the case the high sensitivity mode
may be required.
b) high sensitivity mode
To teach the diffuse-reflective model E3H2-DS30 in high sen-
sitivity mode, place the object in front of the sensor at the
required sensing distance. Press the teach button for
>8 seconds. For remote teach connect the white wire (Pin 2)
for >8 seconds to common (-).
The threshold is now set just below the received light level.
When the object is removed, a state change at the sensor
should occur and the LED should no longer be flashing.
Operation mode selection
The light-on / dark-on operation mode can be selected by wire
(except for E3H2-T2). The white wire (Pin 2) can be connected to
plus (+), common (-) or left open (not connected) for the default
setting.
a) E3H2-T4 Receiver
Default setting (wire left open):DARK-ON
Connected to plus (+): LIGHT-ON
Connected to common (-): DARK-ON
b) E3H2-R2
Default setting (wire left open):DARK-ON
Connected to plus (+): LIGHT-ON
Connected to common (-): TEACH
c) E3H2-DS30
Default setting (wire left open):LIGHT-ON
Connected to plus (+): DARK-ON
Connected to common (-): TEACH
d) E3H2-DS10
Default setting (wire left open):LIGHT-ON
Connected to plus (+): DARK-ON
Connected to common (-): LIGHT-ON
For E3H2-T2 the operation mode is fixed and models with lighton and dark-on operation are available.
*1 In case the remote teach operation is required when the white wire is con-
nected to plus (+), add a 2.2 kΩ resistor between the white wire and (+)
to avoid a short circuit.
*1
*1
For E3H2-T2 and E3H2-DS10 the sensitivity setting is fixed.
4 Miniature Photoelectric Sensors
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