Omron E3NT-L User Manual

Cat. No. E30E-EN-01A

Diffuse Reflective Sensor
E3NT-L

Photoelectric Sensor

OPERATION MANUAL

TABLE OF CONTENTS

SECTION 1

Important Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1-1 Using the operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-2 Use in accordance with the intended purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-3 Use that is not in accordance with the intended purpose . . . . . . . . . . . . . . . . . . . . 6

1-4 Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-5 Warranty and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1-6 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1-7 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SECTION 2

Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2-1 Safety notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SECTION 3

Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3-1 Diffuse reflective sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3-2 Optical data link E3NT-AL232 (order separately) . . . . . . . . . . . . . . . . . . . . . . . . . 17

3-3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

SECTION 4

Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4-1 Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4-2 Display and operator controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4-3 User set parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4-4 Inputs/Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

SECTION 5

Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5-1 Packaging / Transportation damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5-2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5-3 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

SECTION 6

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6-1 Safety notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

6-2 Sensor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3

TABLE OF CONTENTS

SECTION 7

Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7-1 Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7-2 Establishing electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7-3 Connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

7-4 Connection in line with EMC requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

SECTION 8

Setting into Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

8-1 Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

8-2 Switching on the operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

8-3 Aligning the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

8-4 Setting the switching points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

SECTION 9

Sensor Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

9-1 Setting the sensor using the push buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

9-2 Setting the sensor with a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

SECTION 10

Maintenance and Repair. . . . . . . . . . . . . . . . . . . . . . . . . . 61

10-1 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10-2 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

SECTION 11

Accessories and Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

11-1 Accessories and parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

SECTION 12

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

12-1 Error messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

12-2 Factory default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

4

Important Precautions

1-1 Using the operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-2 Use in accordance with the intended purpose. . . . . . . . . . . . . . . . . . . . . . . . . 6

1-3 Use that is not in accordance with the intended purpose . . . . . . . . . . . . . . . . 6

1-4 Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-5 Warranty and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1-6 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1-7 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SECTION 1

5

Using the operating instructions

1-1 Using the operating instructions

These operating instructions refer exclusively to diffuse reflective sensors in
the E3NT type series. They contain the most important notes for operating the
sensor in line with safety requirements.

The operating instructions must always be close at hand and accessible at all
times, and must be kept together with the higher-level machine installation.

The contents of these operating instructions must be read and understood,
and all its points must be followed by everyone who is responsible for machine
planning, assembly and operation. This particularly applies to the safety
notes.

Observance of the safety notes will help to avoid accidents, malfunctions and
faults.

1-2 Use in accordance with the intended purpose

Diffuse reflective sensors in the E3NT type series are always operated as part
of a higher-level overall system, e.g. a machine installation.

They may only be used as optical sensors to check the presence of objects
within a machine installation with a higher-level control system.

Any other use, or any use exceeding this scope, is not permitted.
Use in accordance with the intended purpose also includes observance of the

operating instructions and keeping to the inspection and maintenance specifi­cations in accordance with the system documentation.

Section 1-1

1-3 Use that is not in accordance with the intended purpose

Diffuse reflective sensors in the E3NT type series must not be used as safety
components within the scope of the EU machine guideline.

Its use in applications in which the safety of persons depends on functioning
of the sensor is not permissible!

1-4 Electromagnetic compatibility (EMC)

Diffuse reflective sensors in the E3NT type series are built to conform to the
following standards:

• EN 60947-5-2 Low-voltage switch gear - Part 5-2:
Control devices and switching elements: proximity switches

• EN 50081-2/-1Basic interference emission standard
Industrial area/small establishments

• EN 61000-6-2 Basic interference immunity standard
Industrial area

6

Warranty and liability

1-5 Warranty and liability

Our Terms and Conditions of Delivery and Payment fundamentally apply.
These are available to the owner at the latest as from conclusion of a contract.

Warranty and liability claims for personal injury and property damage are
ruled out if they are attributable to one or several of the following causes:

• Use of the sensor that is not in accordance with its intended purpose

• Improper assembly, commissioning and maintenance of the sensor

• Failure to observe the notes in the operating instructions in relation to
transport, storage, assembly, commissioning and maintenance of the
sensor

• Unauthorised structural changes to the sensor

• Repairs carried out improperly

• Disasters resulting from the influence of foreign bodies and acts of God.

Section 1-5

1-6 Key to symbols

The following symbols are used in these operating instructions:

1-7 Abbreviations

The following abbreviations are used in these operating instructions:

Important information

Risk of damage to the machine or material

Risk of injury to life and limb in general

• BGS BackGround Suppression

• FGS ForeGround Suppression

• IR InfraRed

• PC Personal Computer

7

Abbreviations

Section 1-7

8

2-1 Safety notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SECTION 2

Safety Notes

9

Safety notes

2-1 Safety notes

Section 2-1

The diffuse reflective sensors belonging to the E3NT type series may
only be used as described in these operating instructions.

They may only be operated as part of a higher-level overall system,
e.g. a machine installation.

During machine planning and the use of diffuse reflective sensors
belonging to the E3NT type series, the safety and accident prevention
regulations that are specific to use must be observed, e.g.:

•EN 292, Safety of machines, general design principles

•EN 60204, Electrical equipment of machines

Diffuse reflective sensors belonging to the E3NT type series must not
be used as safety components within the scope of the EU Machine
guidelines.

Their use in applications in which the safety of persons depends on
functioning of the sensor is not permissible!

The manufacturer and owner of the higher-level overall system, e.g. of
a machine installation, is responsible for conformity with the national
and international safety and accident prevention regulations that apply
to the special application.

Assembly, electrical connection and maintenance may only be carried
out by instructed, trained and authorised specialist personnel in
accordance with applicable regulations after de-energising the power
supply and switching off the machine.

The machine must be safeguarded against reactivation.

Conversions and changes as well as tampering with the interior of the
sensor, the data link and the alignment tool are forbidden.

The notes contained in these operating instructions, in particular the
chapters entitled Safety notes and Maintenance and repair, must be
integrated into the operating instructions of the higher-level overall sys­tem.

10

Specification

3-1 Diffuse reflective sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3-1-1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3-1-2 Optical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3-1-3 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3-1-4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3-1-5 Standards and approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3-1-6 Parallel operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3-1-7 Black/White-error (6 % / 90 % remission, typical) . . . . . . . . . . . . . 16

3-1-8 Hysteresis (typical). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3-2 Optical data link E3NT-AL232 (order separately) . . . . . . . . . . . . . . . . . . . . . 17

3-3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3-3-1 Sensor E3NT-L17 with horizontal connector . . . . . . . . . . . . . . . . . . 18

3-3-2 Sensor E3NT-L37 with vertical connector . . . . . . . . . . . . . . . . . . . . 19

3-3-3 Universal mounting bracket E39-EL1 (order separately). . . . . . . . . 20

3-3-4 Adapter bracket E39-EL2 (order separately) . . . . . . . . . . . . . . . . . . 20

3-3-5 Optical data link E3NT-AL232 2m (order separately) . . . . . . . . . . . 21

SECTION 3

11

Diffuse reflective sensor

3-1 Diffuse reflective sensor

3-1-1 General data

Section 3-1

Sensor type E3NT-L@@7 Diffuse reflective sensor with background respectively fore-

Signal evaluation Double triangulation method
Options Window heating, analog output
User settings By push button on the sensor or with a PC connected via the

Operating modes Background suppression, foreground suppression, back-

Optical data link (order separately) Set-up via a PC, real-time analog value output, firmware

ground suppression

optical data link (order separately)

ground and foreground suppression (2-point window evalua­tion)

update

3-1-2 Optical data

Emitted light Infrared, 850 - 880 nm
Rated sensing distance 2 m
Setting distance, Sr teachable/manual set-up

0.2 ... 2.0 m (90 % remission)

0.2 ...1.7 m (6% remission)
Standard measured object Kodak grey card 90%, 200 x 200 mm
Blind zone < 0.1 m
Black/white error (6%/90%) < 15 % (of setting distance Sr)
Hysteresis < 5 % of setting distance Sr (remission 90 %) or max. 4 cm

< 10 % of setting distance Sr (remission 6 %) or max. 6 cm

(higher value valid)
Repetition accuracy < 5 % (of setting distance Sr) or 4 cm (higher value valid)
Light spot diameter < 40 mm in the case of Sr = 2 m
Minimum object size > 40 mm
Ambient light immunity to EN 60947-5-2

Halogen lamps (100-120 Hz)
Fluorescent lamps (30 kHz)
Energy saving lamps

> 10,000 lux

> 5,000 lux

> 2,000 lux

(max. illuminance of an energy saving lamp)

12

Diffuse reflective sensor

Section 3-1

3-1-3 Mechanical data

Dimensions (length x width x depth) 85 x 27 x 65 mm
Materials

Housing

Front pane
Keyboard
Seals

Housing colour Grey, RAL 7030
Assembly Screw fastening by way of four M5 threads and two M5

Connection M12 connector, 5-pole (piercing)
Ambient temperature range - 40 °C ... + 55 °C (with window heating)

Storage temperature range - 40 °C ... + 60 °C
Permissible relative humidity 35 % ... 95 %, no condensation
Front pane heating optional
Degree of protection to EN 60529/IEC 529 IP 67
Protection class II (50 V DC)
Resistance to

Vibration (to IEC 68-2-6)
Shock (to IEC 68-2-27)

Powder-coated aluminium, sea-water resistant, 231 GD
AlSi12 (Cu) (standard version)
Aluminium with foodstuff-approved coating (option)

Glass
HTV silicone
RTV silicone

through holes or with universal mounting bracket (order sepa­rately)

- 25 °C ... + 55 °C

- 10 °C ... + 55 °C (analog output)

± 1.5 mm, 1 h , 10 - 70 Hz
300 m/s²

13

Diffuse reflective sensor

3-1-4 Electrical data

Utilisation category to EN 60947-5-2 DC 12
Rated operating voltage + 24 V DC, polarised
Operating voltage range + 10 ... + 30 V DC
Current consumption < 90 mA with the display off

< 110 mA with the display on
Power-on delay < 300 ms
Inputs/outputs

Outputs User set functions

Output circuit User set PNP (open collector), NPN (open collector) or com-

Output current max. 100 mA
Voltage drop < 2.0 V
Residual current < 100 µA
Circuit protection Reversed power supply, overload and short-circuit (pulsed),

Inputs User set functions

Input circuit Voltage input +10 V ... U
Pulse duration min. 1 ms

Analog output Current output 0 ... 21 mA

Switch-on/off time (T
Insulation resistance 20 MΩΩΩΩ at 500 V DC

Insulation voltage strength 1 kV AC, 50/60 Hz (1 min)
Impulse strength (insulation) 6 kV

ON

/ T

) ≤≤≤≤ 2.5 ms

OFF

Pin 2 = input (In 2) or output (Out 2)

depending on set-up

Pin 4 = output (Out 1)

Pin 5 = Input (In 1) or analog output

depending on model

(e.g. switching output, alarm output, ...)

plementary (push-pull)

mutual interferences

(e.g. teach-in, trigger, test, ...)

- 3 mA correspond to distance < 0.2 m

- 4 ... 20 mA correspond to distance 0.2 m ... 2.0 m

- 21 mA correspond to distance > 2.0 m (or no object)

Section 3-1

Supply

14

Diffuse reflective sensor

3-1-5 Standards and approvals

Interference withstand

General EN 60947-5-2 Proximity switches

EN 61000-6-2 Generic interference immunity standard,
industrial area

Static discharge (ESD) EN 61000-4-2

Contact ± 4 kV / air ± 8 kV
Function criterion A*

High-frequency electromagnetic fields (HF) EN 61000-4-3

80 ... 1000 MHz, 10 V/m, 80 %
Function criterion A*

Fast transient interference quantities (burst) EN 61000-4-4

± 2 kV, t/th = 5/50 (ns)
Function criterion A*

Impulse voltages (surge) EN 61000-4-5

± 1 kV, t/th = 1.2/50 (ns)
Function criterion B*

Conducted disturbances EN 61000-4-6

3 V, 0.15 ... 80 MHz, 80 %
Function criterion A*

Interference emission

General EN 60947-5-2 Proximity switches

EN 50081-2 Generic interference emission standard,
industrial area
EN 50081-1 Generic interference emission standard,

small establishments
Radio interference field strength EN 55011, 30 ... 1000 MHz
Radiated radio interference power EN 55011, 1 GHz ... 18 GHz

Permits UL (pending), CSA (pending)

Section 3-1

* Function criterion A

Normal functioning also ensured during a disturbance.

* Function criterion B

Normal functioning ensured after a disturbance.

15

Diffuse reflective sensor

3-1-6 Parallel operating range

30

20

10

0

-10

Object position X (mm)

-20

-30
0 500 1000 1500 2000 2500

E3NT

Object

Z

X

Distance Z (mm)

3-1-7 Black/White-error (6 % / 90 % remission, typical)

20

Section 3-1

15

10

5

0

Black/White-error (%)

-5

-10
0 500 1000 1500 2000 2500

3-1-8 Hysteresis (typical)

15

10

Distance Z (mm)

E3NT

X

black object

Object

Z

16

5

Hysteresis (%)

E3NT

0

0 500 1000 1500 2000 2500

Object

Z

X

white object

Distance Z (mm)

Optical data link E3NT-AL232 (order separately)

3-2 Optical data link E3NT-AL232 (order separately)

Dimensions (length x width x depth) 29.5 x 72.9 x 26.4 mm
Housing material ABS and PMMA (IR transparent)
Housing colour Black, RAL 9005
Assembly Snap mounting on sensor
Connection 2 m connecting cable with 9-pole sub-D connector
Ambient temperature range - 10 °C ... + 50 °C
Storage temperature range - 40 °C ... + 60 °C
Permissible relative humidity 35 % ... 85 %, no condensation
Degree of protection to EN 60529 / IEC 529 IP 54
Emitted light IR communication element 880 nm
Rated operating voltage Via RS232 interface from PC
Current consumption 6 mA

Section 3-2

17

Dimensions

3-3 Dimensions

3-3-1 Sensor E3NT-L17 with horizontal connector

14 33.4

27

14

M5 (4x)

M12

Section 3-3

receiver 1

88.7

M5 (2x)

14.3

30 23.1 15.7

65.1

4.7

emitter

receiver 2

18

Dimensions

3-3-2 Sensor E3NT-L37 with vertical connector

14 33.4

14

27

M5 (4x)

Section 3-3

receiver 1

88.7

4.7

M5 (2x)

12.1

23.130

65.1

15.2
M12

emitter

receiver 2

19

Dimensions

3-3-3 Universal mounting bracket E39-EL1 (order separately)

Section 3-3

26

30

39.5

46

28°

7

84.5

10

80.62

R

60

14

8.5

R

3

0

ø 5.3 ±0.1

25

°

ø 6.3 ±0.1

95

120±1

2.5

38±1

17.5

°

10

10.5

74

R

5

x 7

50°

31

7

108

°

30

30

11

15°

28.4

R

x 2

5

22.5

R

R

°

9.5

25

R

R

8
2

.7

4

7

92

4

28

15

55.5

ø 4.2 ±0.1

90

°

R

30

10°

ø 4.2 ±0.1

Rx

3-3-4 Adapter bracket E39-EL2 (order separately)

45

22.5

7

ø 5.2

43.4

7.8

ø 6.3

10

20.3

20

15

3

R

90°

Rx

2

20

Dimensions

3-3-5 Optical data link E3NT-AL232 2m (order separately)

cable 2 m

30

Section 3-3

27

68,9

21