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Smart Laser Sensors

E3NC

Ideal for Applications That Cannot Be Handled with Fiber Sensors or Photoelectric Sensors

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last update: May 26, 2025

Compact Laser Sensors: E3NC-L

Sensing method Coaxial Retro-reflective with MSR function
Model E3NC-LH03 E3NC-LH03+
E39-P51
Light source (wavelength) Visible semiconductor laser diode (660 nm), 215 μW max.
Laser class Class 1 (JIS, IEC/EN, FDA *1, GB/T)
Sensing
distance
*2		 Giga-power mode (GIGA) 8 m 0.5 m
Standard mode (Stnd) 6 m
High-speed mode (HS) 3.5 m
Super-high-speed mode
(SHS)		 2 m
Beam shape Spot Line
Beam size *3 Approx. 2 mm dia. at 1 m Line length: Approx. 25 mm at
250 mm
Line length: Approx. 50 mm at
500 mm
Differential distance *4 ---
Indicators OUT indicator (orange) and STABILITY indicator (green)
Ambient illumination (Receiver side) Incandescent lamp: 10,000 lx max.,
Sunlight: 20,000 lx max.
Ambient temperature range Operating: -10 to 55°C; Storage: -25 to 70°C (with no icing or
condensation)
Ambient humidity range Operating and storage: 35% to 85% (with no condensation)
Altitude 2,000 m max.
Installation environment Pollution degree 3 (as per IEC 60947-1)
Insulation resistance 20 MΩ min. (at 500 VDC)
Dielectric strength 1,000 VAC at 50/60 Hz for 1 min
Vibration resistance (destruction) 10 to 55 Hz with a 1.5-mm double amplitude or 100 m/s2 for 2 hours each
in X, Y, and Z directions
Shock resistance (destruction) 500 m/s2 for 3 times each in X, Y, and Z directions
Degree of protection IEC IP67 *5
Connecting method Pre-wired connector (standard length: 2 m)
Materials Sensor Head Case Polybutylene terephthalate (PBT)
Lens Methacrylic resin (PMMA)
Cable Vinyl chloride (PVC)
Lens
Attachment		 Case --- ABS
Lens --- Methacrylic resin (PMMA)
Weight (packed
state/Sensor
Head only)		 Models with 2-m cable Approx. 120 g/approx. 70 g
Models with 5-m cable Approx. 180 g/approx. 130 g
Lens Attachment --- Approx. 25 g/approx. 2 g
Accessories Instruction Manual

Sensing method Diffuse-reflective Limited reflective
Model E3NC-LH02 E3NC-LH02+
E39-P52		 E3NC-LH01
Light source (wavelength) Visible semiconductor laser diode (660 nm), 315 μW max.
Laser class Class 1 (JIS, IEC/EN, FDA *1, GB/T)
Sensing
distance
*2		 Giga-power mode (GIGA) 1,200 mm 1,000 mm 70±15 mm
Standard mode (Stnd) 750 mm 600 mm
High-speed mode (HS) 250 mm 200 mm
Super-high-speed mode
(SHS)		 200 mm 150 mm
Beam shape Spot Line Spot
Beam size *3 Approx. 0.8 mm dia. at
300 mm		 Line length: Approx. 45
mm at 500 mm
Line length: Approx. 100
mm at 1,000 mm		 Approx. 0.1 mm dia. at
70 mm
Differential distance *4 10% of sensing distance max.
Indicators OUT indicator (orange) and STABILITY indicator (green)
Ambient illumination (Receiver side) Incandescent lamp: 10,000 lx max.,
Sunlight: 20,000 lx max.
Ambient temperature range Operating: -10 to 55°C; Storage: -25 to 70°C (with no icing or
condensation)
Ambient humidity range Operating and storage: 35% to 85% (with no condensation)
Altitude 2,000 m max.
Installation environment Pollution degree 3 (as per IEC 60947-1)
Insulation resistance 20 MΩ min. (at 500 VDC)
Dielectric strength 1,000 VAC at 50/60 Hz for 1 min
Vibration resistance (destruction) 10 to 55 Hz with a 1.5-mm double amplitude or 100 m/s2 for 2 hours
each in X, Y, and Z directions
Shock resistance (destruction) 500 m/s2 for 3 times each in X, Y, and Z directions
Degree of protection IEC IP65 (E3NC-LH02: Applies only when adjuster is locked.) *5
Connecting method Pre-wired connector (standard length: 2 m)
Materials Sensor Head Case Polybutylene terephthalate (PBT)
Lens Methacrylic resin (PMMA)
Cable Vinyl chloride (PVC)
Lens
Attachment		 Case --- ABS ---
Lens --- Methacrylic resin
(PMMA)		 ---
Weight (packed
state/Sensor
Head only)		 Models with 2-m cable Approx. 115 g/approx. 65 g
Models with 5-m cable Approx. 175 g/approx. 125 g
Lens Attachment --- Approx. 25 g/approx. 2 g ---
Accessories Instruction Manual

*1. These Sensors are classified as Class 1 laser devices under IEC 60825-1: 2014 and the regulations of Laser Notice
      No. 56 for FDA certification. CDRH (Center for Devices and Radiological Health) registration has been completed.
      E3NC-LH01, E3NC-LH02 (Accession Number: 1220690-003)
      E3NC-LH03 (Accession Number: 1320739-001)
*2. The values were measured using the OMRON standard sensing object (white paper) for the E3NC-LH01, E3NC-LH02,
      and E3NC-LH02 + E39-P52.
      The values for the E3NC-LH03, and E3NC-LH03 + E39-P51 apply when an E39-R21, E39-R22, E39-RS10, or
      E39-RS11 Reflector is used.
      Other Reflectors are not recommended.
*3. Defined at the 1/e2 (13.5%) of the central intensity at the measurement distance.
      Measurement may be influenced if there is light leakage outside the defined region and the surroundings of the target
      object have a high reflectance in comparison to the target object.
*4. Measured at the rated sensing distance.
*5. The E39-P5[] contains a packing to prevent entry of foreign matter. The degree of protection between the
      E3NC-LH[][] and E39-P5[] is not specified.

Amplifier Units

Type Standard models Model for Sensor
Communications Unit
NPN output E3NC-LA21 E3NC-LA7 E3NC-LA24 E3NC-LA0
PNP output E3NC-LA51 E3NC-LA9 E3NC-LA54
Connecting method Pre-wired Wire-saving
Connector		 M8
Connector		 Connector for Sensor
Communications Unit
Inputs/
outputs		 Outputs 2 outputs 1 output --- *1
External inputs 1 input
Power supply voltage *2 10 to 30 VDC, including 10% ripple (p-p) Supplied from the
connector through
the Sensor
Communications Unit
Power consumption *3 At Power Supply Voltage of 24 VDC
Normal mode: 1,560mW max. (Current consumption: 65mA max.)
Eco ON: 1,320 mW max. (Current consumption: 55 mA max.)
Eco LO: 1,440 mW max. (Current consumption: 60 mA max.)
Control outputs *4 Load power supply voltage: 30 VDC max.,
open-collector output
Load current:
Groups of 1 to 3 Amplifier Units: 100 mA max.,
Groups of 4 to 30 Amplifier Units: 20 mA max.
(Residual voltage:
At load current of less than 10 mA: 1 V max.
At load current of 10 to 100 mA: 2 V max.)
OFF current: 0.1 mA max.		 ---
External inputs Refer to *5. ---
Indicators 7-segment displays (Sub digital display: green, Main digital display: white)
Display direction: Switchable between normal and reversed.
OUT indicator (orange), L/D indicator (orange), ST indicator (blue),
DPC indicator (green), and OUT selection indicator
(orange, only on models with 2 outputs)
Protection circuits Power supply reverse polarity protection,
output short-circuit protection, and
output reverse polarity protection		 Power supply reverse
polarity protection and
output short-circuit
protection
Response
time		 Super-high-speed mode (SHS) *6 Operate or reset: 80 μs
High-speed mode (HS) Operate or reset: 250 μs
Standard mode (Stnd) Operate or reset: 1 ms
Giga-power mode (GIGA) Operate or reset: 16 ms
Sensitivity adjustment Smart Tuning (2-point tuning, full auto tuning, position tuning, maximum sensitivity tuning, power tuning,
or percentage tuning (-99% to +99%)), or manual adjustment.
Maximum connectable Units 30 With E3NW-ECT: 30 units *7
With E3NW-CRT: 16 units
With E3NW-CCL: 16 units
No. of Units
for mutual
interference
prevention		 Super-high-speed mode (SHS) *6 0
High-speed mode (HS) 2
Standard mode (Stnd) 2
Giga-power mode (GIGA) 4
Functions Dynamic power control (DPC) Provided
Timer Select from timer disabled, OFF-delay, ON-delay, one-shot, or ON-delay
+ OFF-delay timer: 1 to 9,999 ms
Zero reset Negative values can be displayed. (Threshold value is shifted.)
Resetting settings *8 Select from initial reset (factory defaults) or user reset (saved settings).
Eco mode *9 Select from OFF (digital display lit), ECO ON (digital display not lit), and ECO LO (digital display dimmed).
Bank switching Select from banks 1 to 4.
Power tuning Select from ON or OFF.
Output 1 Select from Normal Detection Mode or Area Detection Mode.
Output 2 Select from
normal
detection
mode, alarm
output mode,
or error
output mode.		 --- Select from normal
detection mode, alarm
output mode, or error
output mode.
External input Select from input OFF, tuning, power tuning,
laser OFF, zero reset, or bank switching.		 ---
Hysteresis width Select from standard setting or user setting.
Ambient temperature range* Operating:
Groups of 1 or 2 Amplifier Units: -25 to 55°C,
Groups of 3 to 10 Amplifier Units: -25 to 50°C,
Groups of 11 to 16 Amplifier Units: -25 to 45°C,
Groups of 17 to 30 Amplifier Units: -25 to 40°C
Storage: -30 to 70°C (with no icing or condensation)		 Operating:
Groups of 1 or 2 Amplifier
Units: 0 to 55°C,
Groups of 3 to 10 Amplifier
Units: 0 to 50°C,
Groups of 11 to 16 Amplifier
Units: 0 to 45°C,
Groups of 17 to 30 Amplifier
Units: 0 to 40°C,
Storage: -30 to 70°C
(with no icing or condensation)
Ambient humidity range Operating and storage: 35% to 85% (with no condensation)
Altitude 2,000 m max.
Installation environment Pollution degree 3 (as per IEC 60947-1)
Insulation resistance 20 MΩ (at 500 VDC)
Dielectric strength 1,000 VAC at 50/60 Hz for 1 min
Vibration resistance (destruction) 10 to 55 Hz with a 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance (destruction) 500 m/s2 for 3 times each in X, Y, and Z directions 150m/s2 for 3 times each in
X, Y, and Z directions
Weight (packed state/Amplifier Unit only) Approx. 115 g/
approx. 75 g		 Approx. 60 g/
approx. 20 g		 Approx. 65 g/approx. 25 g
Materials Case Polycarbonate (PC)
Cover Polycarbonate (PC)
Cable Vinyl chloride (PVC)
Accessories Instruction Manual

*1. Two sensor outputs are allocated in the programmable logic controller PLC I/O table.
      PLC operation via Communications Unit enables reading detected values and changing settings.
*2. Applicable Sensor Head is the series of E3NC-LH[][].
*3. At Power Supply Voltage of 10 to 30 VDC.
      Normal mode: 1,650 mW max. (Current consumption: 55 mA max. at 30 VDC, 115 mA max. at 10 VDC)
      Eco ON: 1,410 mW max. (Current consumption: 47 mA max. at 30 VDC, 95 mA max. at 10 VDC)
      Eco LO: 1,530 mW max. (Current consumption: 51 mA max. at 30 VDC, 105 mA max. at 10 VDC)
*4. The total for both outputs of a model with 2 outputs is 100 mA max.
      (Residual voltage: Load current of less than 10 mA: 1 V max., Load current of 10 to 100 mA:2 V max.).
*5. The following details apply to the input.

Contact input (relay or switch) Non-contact input (transistor) Input time*5-1
NPN ON: Shorted to 0 V
(Sourcing current: 1 mA max.).
OFF: Open or shorted to Vcc.		 ON: 1.5 V max. (Sourcing current: 1 mA max.)
OFF: Vcc - 1.5 V to Vcc (Leakage current: 0.1 mA max.)		 ON: 9 ms min.
OFF: 20 ms min.
PNP ON: Shorted to Vcc
(Sinking current: 3 mA max.).
OFF: Open or shorted to 0 V.		 ON: Vcc - 1.5 V to Vcc (Sinking current: 3 mA max.)
OFF: 1.5 V max. (Leakage current: 0.1 mA max.)

*5-1.Input time is 25 ms (ON)/(OFF) only when (in tUnE) or (in PtUn) input is selected.
*6. The mutual interference prevention function is disabled if the detection mode is set to super-high-speed mode.
*7. When connected to an OMRON NJ-series Controller.
*8. The bank is not reset by the user reset function or saved by the user save function.
*9. Eco LO is supported for Amplifier Units manufactured in July 2014 or later.

* When the number of connected units is 11 or more, the ambient temperature is less than 50°C.

Accessories

Reflectors

Model E39-R21 E39-R22 E39-RS10 E39-RS11
Ambient temperature Operating: -10 to 55°C; Storage: -25 to 70°C (with no icing or condensation)
Ambient humidity Operating/storage: 35% to 85% (with no condensation)
Vibration resistance
(destruction)		 10 to 55 Hz with a 1.5-mm double amplitude or 100 m/s2 for 2 hours each in X, Y, and Z directions
Shock resistance
(destruction)		 500 m/s2 3 times each in X, Y, and Z directions
Degree of protection IEC IP67 (E39-R21 and E39-R22 only)
Materials Reflective surface: Methacrylic resin (PMMA)
Back surface: Polybutylene terephthalate (PBT)		 Methacrylic resin (PMMA)
Weight
(packed state/
Reflector only)		 Approx. 30 g/
approx. 5 g		 Approx. 35 g/
approx. 10 g		 Approx. 35 g/
approx. 10 g		 Approx. 30 g/
approx. 5 g
Accessories Instruction manual

Ultra-compact CMOS Laser Sensor: E3NC-S

Sensor Heads

Sensing method Distance-settable
Model E3NC-SH250H E3NC-SH250 E3NC-SH100
Light source
(wavelength)		 Visible semiconductor laser
diode (660 nm), 1.2 mW max.		 Visible semiconductor laser diode (660 nm), 0.54 mW max.
Laser class Class 1 (JIS, IEC/EN, FDA *1, GB/T)
Measurement range 35 to 250 mm (display value: 350 to 2,500) 35 to 100 mm (display value:
350 to 1,000)
Standard detected level
difference *2		 35 to 180mm: 9 mm
180 to 250 mm: 25 mm		 35 to 50 mm: 1.5 mm
50 to 100 mm: 3 mm
Beam size*3 Approx. 1 mm dia. at 250 mm Approx. 0.5 mm dia. at 100 mm
Indicators OUT indicator (orange), STABILITY indicator (green), and ST indicator (blue)
Ambient illumination
(Receiver side)		 Incandescent lamp: 4,000 lx
max.,
Sunlight: 8,000 lx max.		 Incandescent lamp: 2,000 lx
max.,
Sunlight: 4,000 lx max.		 Incandescent lamp: 4,000 lx
max.,
Sunlight: 8,000 lx max.
Ambient temperature
range		 Operating: -10 to 50°C; Storage: -25 to 70°C (with no icing or condensation)
Ambient humidity range Operating and storage: 35% to 85% (with no condensation)
Altitude 2,000 m max.
Installation environment Pollution degree 3 (as per IEC 60947-1)
Insulation resistance 20 MΩ min. (at 500 VDC)
Dielectric strength 1,000 VAC at 50/60 Hz for 1 min
Vibration resistance
(destruction)		 10 to 55 Hz with a 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance
(destruction)		 500 m/s2 3 times each in X, Y, and Z directions
Degree of protection IEC IP67
Connecting method Pre-wired connector (Standard cable length: 2 m)
Materials Case Polybutylene terephthalate (PBT)
Lens Methacrylic resin (PMMA)
Cable Vinyl chloride (PVC)
Weight (packed state/
Sensor Head only)		 Approx. 125 g/approx. 75 g
Accessories Instruction Manual, laser warning label (E3NC-SH250H only)

Note: Incorrect detection may occur outside the measurement range if the object has a high reflection factor.
*1. These Sensors are classified as Class 1 laser devices under IEC 60825-1: 2014 and the regulations of Laser Notice
      No. 56 for FDA certification.
      CDRH (Center for Devices and Radiological Health) registration has been completed. (Accession Number: 1220691-002)
*2. The values were measured at the center of the sensing distance using OMRON’s standard sensing object
      (white ceramic).
*3. Beam size: Defined at the 1/e2 (13.5 %) of the central intensity at the measurement center distance.
      Measurement may be influenced if there is light leakage outside the defined region and the surroundings of the target
      object have a high reflectance in comparison to the target object.
      Also, when detecting a workpiece that is smaller than the beam size, a correct value may not be obtained.

Amplifier Units

Type Standard models Model for Sensor
Communications Unit
NPN output E3NC-SA21 E3NC-SA7 E3NC-SA24 E3NC-SA0
PNP output E3NC-SA51 E3NC-SA9 E3NC-SA54
Connecting method Pre-wired Wire-saving
Connector		 M8
Connector		 Connector for Sensor
Communications Unit
Inputs/
outputs		 Outputs 2 outputs 1 output --- *1
External inputs 1 input
Power supply voltage *2 10 to 30 VDC, including 10% ripple (p-p) Supplied from the
connector through
the Sensor
Communications Unit
Power consumption *3 At Power Supply Voltage of 24 VDC
Normal mode: 1,920 mW max. (Current consumption: 80 mA max.)
Eco ON: 1,680 mW max. (Current consumption: 70 mA max.)
Eco LO: 1,800 mW max. (Current consumption: 75 mA max.)
Control outputs *4 Load power supply voltage: 30 VDC max.,
open-collector output
Load current:
Groups of 1 to 3 Amplifier Units: 100 mA max.,
Groups of 4 to 30 Amplifier Units: 20 mA max.
(Residual voltage:
At load current of less than 10 mA: 1 V max.
At load current of 10 to 100 mA: 2 V max.)
OFF current: 0.1 mA max.		 ――
External inputs Refer to *5.
Indicators 7-segment displays (Sub digital display: green, Main digital display: white)
Display direction: Switchable between normal and reversed.
OUT indicator (orange), L/D indicator (orange), ST indicator (blue),
ZERO indicator (green), and OUT selection indicator
(orange, only on models with 2 outputs)
Protection circuits Power supply reverse polarity protection,
output short-circuit protection, and
output reverse polarity protection		 Power supply reverse
polarity protection and
output short-circuit
protection
Response
time		 Super-high-speed mode (SHS) *6 Operate or reset: 1.5 ms
High-speed mode (HS) Operate or reset: 5 ms
Standard mode (Stnd) Operate or reset: 10 ms
Giga-power mode (GIGA) Operate or reset: 50 ms
Sensitivity adjustment Smart Tuning (2-point tuning, full auto tuning, 1-point tuning, tuning without workpiece,
2-point area tuning, 1-point area tuning, or area tuning without workpiece),
or manual adjustment
Maximum connectable Units 30 With E3NW-ECT: 30 units *7
With E3NW-CRT: 16 units
With E3NW-CCL: 16 units
No. of Units
for mutual
interference
prevention		 Super-high-speed mode (SHS) *6 0
High-speed mode (HS) 2
Standard mode (Stnd) 2
Giga-power mode (GIGA) 2
Functions Timer Select from timer disabled, OFF-delay, ON-delay, one-shot, or ON-delay
+ OFF-delay timer: 1 to 9,999 ms
Zero reset Negative values can be displayed. (Threshold value is shifted.)
Resetting settings *8 Select from initial reset (factory defaults) or user reset (saved settings).
Eco mode *9 Select from OFF (digital display lit), ECO ON (digital display not lit), and ECO LO (digital display dimmed).
Bank switching Select from banks 1 to 4.
Output 1 Select from Normal detection mode, Area detection mode, or hold mode.
Output 2 Select from
Normal
detection
mode or Error
output mode.		 --- Select from Normal
detection mode or Error
output mode.
External input Select from input OFF, tuning, laser OFF,
zero reset, or bank switching.		 ――
Keep function *10 Select from ON or OFF.
Background suppression *11 Select from ON or OFF.
Hysteresis width Select from standard setting or user setting.
Ambient temperature range* Operating:
Groups of 1 or 2 Amplifier Units: -25 to 55°C,
Groups of 3 to 10 Amplifier Units: -25 to 50°C,
Groups of 11 to 16 Amplifier Units: -25 to 45°C,
Groups of 17 to 30 Amplifier Units: -25 to 40°C
Storage: -30 to 70°C (with no icing or condensation)		 Operating:
Groups of 1 or 2 Amplifier
Units: 0 to 55°C,
Groups of 3 to 10 Amplifier
Units: 0 to 50°C,
Groups of 11 to 16 Amplifier
Units: 0 to 45°C,
Groups of 17 to 30 Amplifier
Units: 0 to 40°C
Storage: -30 to 70°C
(with no icing or condensation)
Ambient humidity range Operating and storage: 35% to 85% (with no condensation)
Insulation resistance 20 MΩ (at 500 VDC)
Altitude 2,000 m max.
Installation environment Pollution degree 3 (as per IEC 60947-1)
Dielectric strength 1,000 VAC at 50/60 Hz for 1 min
Vibration resistance (destruction) 10 to 55 Hz with a 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance (destruction) 500 m/s2 for 3 times each in X, Y, and Z directions 150 m/s2 for 3 times each
in X, Y, and Z directions
Weight (packed state/Amplifier Unit only) Approx. 115 g/
approx. 75 g		 Approx. 60 g/
approx. 20 g		 Approx. 65 g/approx. 25 g
Materials Case Polycarbonate (PC)
Cover Polycarbonate (PC)
Cable Vinyl chloride (PVC)
Accessories Instruction Manual

*1. Two sensor outputs are allocated in the programmable logic controller PLC I/O table.
      PLC operation via Communications Unit enables reading detected values and changing settings.
*2. Applicable Sensor Head is the series of E3NC-SH[][].
*3. At Power Supply Voltage of 10 to 30 VDC.
      Normal mode: 2,250 mW max. (Current consumption: 75 mA max. at 30 VDC, 145 mA max. at 10 VDC)
      Eco ON: 2,010 mW max. (Current consumption: 67 mA max. at 30 VDC, 125 mA max. at 10 VDC)
      Eco LO: 2,130 mW max. (Current consumption: 71 mA max. at 30 VDC, 135 mA max. at 10 VDC)
*4. The total for both outputs of a model with 2 outputs is 100 mA max.
      (Residual voltage: Load current of less than 10 mA: 1 V max., Load current of 10 to 100 mA: 2 V max.).
*5. The following details apply to the input.

Contact input (relay or switch) Non-contact input (transistor) Input time*5-1
NPN ON: Shorted to 0 V
(Sourcing current: 1 mA max.).
OFF: Open or shorted to Vcc.		 ON: 1.5 V max. (Sourcing current: 1 mA max.)
OFF: Vcc - 1.5 V to Vcc (Leakage current: 0.1 mA max.)		 ON: 9 ms min.
OFF: 20 ms min.
PNP ON: Shorted to Vcc
(Sinking current: 3 mA max.).
OFF: Open or shorted to 0 V.		 ON: Vcc - 1.5 V to Vcc (Sinking current: 3 mA max.)
OFF: 1.5 V max. (Leakage current: 0.1 mA max.)

*5-1.Input time is 25 ms (ON)/(OFF) only when (in tUnE) input is selected.
*6. The mutual interference prevention function is disabled if the detection mode is set to super-high-speed mode.
*7. When connected to an OMRON NJ-series Controller.
*8. The bank is not reset by the user reset function or saved by the user save function.
*9. Eco LO is supported for Amplifier Units manufactured in August 2014 or later.
*10. The output for a measurement error is set.
      ON: The value of the output from before the measurement error is retained.
      OFF: The output is turned OFF when a measurement error occurs.
*11. Only the sensing object is detected when tuning.

* When the number of connected units is 11 or more, the ambient temperature is less than 50°C.

last update: May 26, 2025

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