E2A, Omron-Cylindrical Proximity Sensor

E2A, Omron-Cylindrical Proximity Sensor

 E2A, Omron-Cylindrical Proximity Sensor

These Proximity Sensors use high-frequency oscillation. They resist heat, chemicals, and water better than Rectangular Sensors. They are available in both shielded and unshielded models. OMRON Sensing Components detect, measure, analyze, and process various changes that occur on productions sites, such as changes in position, length, height, displacement, and appearance. They also contribute to predicting and preventing future events.

Features and Benefits

  • Ensures a sensing distance approximately 1.5 to 2 times larger than that of any conventional OMRON Sensor.
  • Problems such as the collision of workpieces are eliminated.
  • Full range of standard sizes (M8, M12, M18 and M30; both long and short barrels)
  • Modular construction simplifies


Size Type








E2A-M08@S02-M1-B1 E2A-M08@S02-M1-B2 E2A-M08@S02-M1-C1 E2A-M08@S02-M1-C2 E2A-S08@S02-@@-B1 E2A-S08@S02-@@-B2 E2A-S08@S02-@@-C1


E2A-M08@N04-M1-B1 E2A-M08@N04-M1-B2 E2A-M08@N04-M1-C1 E2A-M08@N04-M1-C2 E2A-S08@N04-@@-B1 E2A-S08@N04-@@-B2 E2A-S08@N04-@@-C1


E2A-M12@S04-@@-B1 E2A-M12@S04-@@-B2 E2A-M12@S04-@@-C1 E2A-M12@S04-@@-C2E2A-M12@N08-@@-B1 E2A-M12@N08-@@-B2 E2A-M12@N08-@@-C1 E2A-M12@N08-@@-C2
Sensing distance2 mm ± 10%4 mm ± 10%4 mm ± 10%8 mm ± 10%
Setting distance0 to 1.6 mm0 to 3.2 mm0 to 3.2 mm0 to 6.4 mm
Differential travel10% max. of sensing distance
TargetFerrous metal (The sensing distance decreases with non-ferrous metal.)
Standard target (mild steel ST37)8´8´1 mm12´12´1 mm12´12´1 mm24´24´1 mm
Response frequency (See note 1.)1,500 Hz1,000 Hz1,000 Hz800 Hz
Power supply voltage (operating voltage range)

12 to 24 VDC. Ripple (p-p): 10% max.

(10 to 32 VDC)

Current consumption (DC 3-wire)10 mA max.
Output type

-B models: PNP open collector

-C models: NPN open collector

Control outputLoad current (See note 2.)200 mA max. (32 VDC max.)
Residual voltage2 V max. (under load current of 200 mA with cable length of 2 m)
IndicatorOperation indicator (Yellow LED)

Operation mode

(with sensing object approaching)

-B1/-C1 models: NO

-B2/-C2 models: NC

For details, refer to the timing charts.

Protection circuitPower source circuit reverse polarity protection, Surge suppressor, Short-circuit protectionOutput reverse polarity protection, Power source circuit reverse polarity protection, Surge suppres- sor, Short-circuit protection
Ambient air temperatureOperating: -40°C to 70°C, Storage: -40°C to 85°C (with no icing or condensation)
Temperature influence (See note 2.)

±10% max. of sensing distance at 23°C within temperature range of -25°C to 70°C

±15% max. of sensing distance at 23°C within temperature range of -40°C to 70°C

Ambient humidityOperating: 35% to 95%, Storage: 35% to 95%
Voltage influence±1% max. of sensing distance in rated voltage range ±15%
Insulation resistance50 MÙ min. (at 500 VDC) between current carry parts and case
Dielectric strength1,000 VAC at 50/60 Hz for 1 min between current carry parts and case
Vibration resistance10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y and Z directions
Shock resistance500 m/s2, 10 times each in X, Y and Z directions1,000 m/s2, 10 times each in X, Y and Z directions
Standard and listings (See note 3.)IEC60529: IP67, Degree of protection EN60947-5-2: EMC
Connection method

-WP models: Pre-wired models (Standard length: 2 m)

-M1 models: M12 4-pin connector models

-M5 models: M8 3-pin connector models

Weight (packaged)Pre-wired modelApprox. 65 gApprox. 85 g
M12 connector modelM12 connector models: Approx. 20 g M8 connector models: Approx. 15 gApprox. 35 g
MaterialCaseStainless steel or brass-nickel platedBrass-nickel plated
Sensing surfacePBT
Clamping nutBrass-nickel plated

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Ref: Omron.co.id