SICK SureSense - HL18 Hybrid photoelectric sensors Operating instructions

O P E R A T I N G I N S T R U C T I O N

HL18(L), HL18G/HL18T

Hybrid photoelectric sensors

O P E R A T I N G I N S T R U C T I O N

HL18(L), HL18G/HL18T

Hybrid photoelectric sensors

de

en

es

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Described product

H18 - SureSense

HL18

HL18G / HL18T

HL18L

Manufacturer

SICK AG

Erwin-Sick-Str. 1

79183 Waldkirch

Germany

Production location

SICK Inc.

55438 Minneapolis, MN

USA

Legal information

This work is protected by copyright. Any rights derived from the copyright shall be

reserved for SICK AG. Reproduction of this document or parts of this document is only

permissible within the limits of the legal determination of Copyright Law. Any modifica‐

tion, abridgment or translation of this document is prohibited without the express writ‐

ten permission of SICK AG.

The trademarks stated in this document are the property of their respective owner.

Original document

This document is an original document of SICK AG.

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3

Contents

1 General safety notes......................................................................... 5

2 Notes on UL approval........................................................................ 5

3 Intended use...................................................................................... 5

4 Operating and status indicators...................................................... 6

5 Mounting............................................................................................. 6

6 Electrical installation........................................................................ 6

6.1 DC Output Operation................................................................................ 7

6.2 Connection Pinout.................................................................................... 10

6.3 Adjustments.............................................................................................. 11

7 Commissioning.................................................................................. 16

8 Troubleshooting................................................................................. 19

9 Disassembly and disposal............................................................... 20

10 Maintenance...................................................................................... 20

11 Technical data.................................................................................... 21

11.1 Dimensional drawing................................................................................ 22

CONTENTS

4

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1 General safety notes

■

Read the operating instructions before commissioning.

■

Connection, mounting, and configuration may only be performed by trained

specialists.

■

2006/42/EC

NO

SAFETY

Not a safety component in accordance with the EU Machinery Directive.

■

When commissioning, protect the device from moisture and contamination.

■

These operating instructions contain information required during the life cycle of

the sensor.

HL18L:

EN/IEC 60825-1:2014

IEC60825-1:2007

LASERCLASS 1

Laser

1

Maximum pulse power < 4,0 mW

Puls length: 4 µs

Wavelength: 650 - 670 nm

Complies with 21 CFR 1040.10

and 1040.11 except for deviations

pursuant to Laser Notice No. 50,

dated June 24, 2007

ATTENTION

WARNING: Interruption, manipulation or incorrect use can lead to hazardous exposure

due to laser radiation.

2 Notes on UL approval

All housing types are Type 1 enclosure.

3 Intended use

The HL18(G/T) is an opto-electronic photoelectric retro-reflective sensor (referred to as

“sensor” in the following) for the optical, non-contact detection of objects, animals, and

persons. A reflector is required for this product to function. If the product is used for any

other purpose or modified in any way, any warranty claim against SICK AG shall become

void.

The HL18L is an opto-electronic photoelectric retro-reflective sensor (referred to as

“sensor” in the following) for the optical, non-contact detection of objects. A reflector is

required for this product to function. If the product is used for any other purpose or

modified in any way, any warranty claim against SICK AG shall become void.

The sensor complies with the Radio Safety Requirements (EMC) for the industrial sector

(Radio Safety Class A). It may cause radio interference if used in a residential area.

GENERAL SAFETY NOTES 1

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4 Operating and status indicators

2

3

2 3

4

1

Potentiometer adjustment (if selec‐

tred by model configuration) or LED

Indicators

2

LED indicator green: supply voltage

active

3

LED indicator yellow: status of

received light beam

4

Signal strength light bar (if selected

by model configuration)

5 Mounting

Mount the sensor and the reflector using suitable mounting brackets (see the SICK

range of accessories). Align the sensor and reflector with each other.

NOTE

Note the sensor's maximum permissible tightening torque of 0.56 Nm.

6 Electrical installation

The sensors must be connected in a voltage-free state (U

V

= 0 V). The following informa‐

tion must be observed depending on the connection type:

– Plug connection: pin assignment

– Cable: wire color

Only apply voltage/switch on the voltage supply (U

V

> 0 V) once all electrical connec‐

tions have been established.

The green LED indicator on the top of the sensor lights up.

Explanation of connection terminology used in Tables 1-3:

BN = Brown

WH = White

BU = Blue

BK = Black

n. c. = no connection

Q1 = switching output 1

4 OPERATING AND STATUS INDICATORS

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Q2 = switching output 2

L+ = supply voltage (Uv)

L1 = AC supply voltage

M = common

N = AC common

Test = Test input

L.ON = light switching

D.ON = dark switching

NOTE

The sensor outputs may come equipped with an adjustable ON delay or OFF delay. This

is indicated by the model configuration (Hx18-xxxxx_).

6.1 DC Output Operation

Table 1: Output Operation

HL18-_xxxxx

-Axxxxx

Q1 = D.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = D.ON, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

-Bxxxxx

Q1 = L.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = L.ON, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

ELECTRICAL INSTALLATION 6

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-Pxxxxx

Q1 = L.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = D.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

-Nxxxxx

Q1 = L.ON, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = D.ON, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

-Fxxxxx

1

Q1 = L.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = D.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

-Vxxxxx

Q1 = L.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = Health, PNP (≤ 100 mA) see table 2, page 10 see table 2, page 10

-Wxxxxx

Q1 = L.ON, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = Health, NPN (≤ 100 mA) see table 2, page 10 see table 2, page 10

6 ELECTRICAL INSTALLATION

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-Xxxxxx

Q1 = D.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = Health, PNP (≤ 100 mA) see table 2, page 10 see table 2, page 10

-Yxxxxx

Q1 = D.ON, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = Health, NPN (≤ 100 mA) see table 2, page 10 see table 2, page 10

-Gxxxxx

Q1 = L.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = Alarm, PNP (≤ 100 mA) see table 2, page 10 see table 2, page 10

-Hxxxxx

Q1 = L.ON, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = Alarm, NPN (≤ 100 mA) see table 2, page 10 see table 2, page 10

-Jxxxxx

Q1 = D.ON, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = Alarm, PNP (≤ 100 mA) see table 2, page 10 see table 2, page 10

-Kxxxxx

Q1 = D.ON, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

Q2 = Alarm, NPN (≤ 100 mA) see table 2, page 10 see table 2, page 10

-Mxxxxx Q1 = D.ON, MOSFET (≤ 100 mA)

+ (L1)

Q

‒ (N)

Load

+ (L

Q

‒ (

+ (L1)

Q

‒ (N)

Load

ELECTRICAL INSTALLATION 6

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9

-Lxxxxx Q1 = L.ON, MOSFET (≤ 100 mA)

+ (L

Q

‒ (

+ (L1)

Q

‒ (N)

Load

+ (L1)

Q

‒ (N)

Load

-Zxxxxx Special output operation Contact SICK Contact SICK

1

PNP output diagram pictured; NPN also possible by connecting the Load to + (L+) and Q

Table 2: Alarm/Health Operation

HL18-_xxxxx

-Vxxxxx

-Xxxxxx

Q2 = Health, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

-Wxxxxx

-Yxxxxx

Q2 = Health, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

-Gxxxxx

-Jxxxxx

Q2 = Alarm, PNP (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

-Hxxxxx

-Kxxxxx

Q2 = Alarm, NPN (≤ 100 mA)

+ (L+)

Q

‒ (M)

Load

+ (L+)

Q

‒ (M)

Load

6.2 Connection Pinout

Table 3: Connection Pinout

HL18 Diagram Pin 1 Pin 2 Pin 3 Pin 4

-x1xxxx

0.2 mm

2

24 AWG

+ (L+)

BN

Q2

WH

- (M)

BU

Q1

BK

6 ELECTRICAL INSTALLATION

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HL18 Diagram Pin 1 Pin 2 Pin 3 Pin 4

-M1xxxx / -L1xxxx

0.2 mm

2

24 AWG

L1

BN

-

N

BU

Q

BK

-x2xxxx

1

4

3

+ (L+)

BN

-

- (M)

BU

Q1

BK

-x3xxxx

2

1

4

3

+ (L+)

BN

Q2

WH

- (M)

BU

Q1

BK

-x4xxxx

1

2

4 3

+ (L+)

BN

Q2

WH

- (M)

BU

Q1

BK

-x5xxxx + (L1) - (N) Q1 n. c.

6.3 Adjustments

L/D Switching

The sensor may be specified with a Light Switching or Dark Switching

(L/D) selection potentiometer.

Light Switching is selected for the Q1 output by rotating the poten‐

tiometer counterclockwise to the stop position. The potentiometer tab

will point toward the “L” printed on the sensor housing.

Dark Switching is selected for the Q1 output by rotating the poten‐

tiometer clockwise to the stop position. The potentiometer tab will

point toward the “D” printed on the sensor housing.

CAUTION

Over rotation of the potentiometer past the stop positions will cause permanent dam‐

age to the sensor.

If complimentary outputs are specified (Hx18-Pxxxxx, Hx18-Nxxxxx, Hx18-Fxxxxx), the

Q2 output will always be opposite switching state of the Q1 output. Therefore, the Q2

output will be Dark Switching when the potentiometer is in the “L” position and Light

Switching in the potentiometer is in the “D” position. If bipolar outputs are specified

(Hx18-Axxxxx, Hx18-Bxxxxx), the Q2 output will always have the same switching state as

the Q1 output. The L/D selection potentiometer does not impact a Health or Alarm out‐

put (if specified).

ELECTRICAL INSTALLATION 6

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Table 4: Q1 output ACTIVE states with Light/Dark Switching selection potentiometer

HL18-xxxx_

L/D Selection

Switch

-xxxxxE

-xxxxxH

-xxxxxI

-xxxxxK

-xxxxxP

Q1 = L.ON

Q1 = D.ON

Time delay

The sensor may be specified with an adjustable time delay. The delay

time is adjusted by rotating the 270° potentiometer.

Clockwise rotation in the direction of the “+” printed on the sensor will

increase the delay time (T

DELAY

). Maximum Delay time will occur at the

clockwise stop position.

Counter clockwise rotation in the direction of the “-“ printed on the

sensor will decrease the delay time. There will be no time delay at the

counter clockwise stop position.

CAUTION

Over rotation of the potentiometer past the stop positions will cause permanent dam‐

age to the sensor.

A L/D selection switch may be specified with an adjustable time delay. Adjustable time

delay does not impact a Health or Alarm output (if specified).

Table 5: Output ACTIVE states for complimentary output variants with adjustable time delay

HL18-Pxxxx_

HL18-Nxxxx_

HL18-Fxxxx_

No Time Delay

Q1 = L.ON

Q2 = D.ON

Adjustabl

e ON

Delay

1

-xxxxxC

-xxxxxF

-xxxxxI

2

-xxxxxM

Q1 = L.ON

Q2 = D.ON

6 ELECTRICAL INSTALLATION

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-xxxxxI

3

Q1 = D.ON

Q2 = L.ON

Adjustabl

e OFF

Delay

1

-xxxxxD

-xxxxxG

-xxxxxK

2

-xxxxxN

Q1 = L.ON

Q2 = D.ON

-xxxxxK

3

Q1 = D.ON

Q2 = L.ON

1

ON or OFF Delay naming applies to the Q1 output

2

L/D Selection Switch in in the “L” Light Switching position

3

L/D Selection Switch in in the “D” Dark Switching position

Table 6: Output ACTIVE states for HL18-Bxxxx_ variants with adjustable time delay

HL18-Bxxxx_

No Time Delay

Q1 = L.ON

Q2 = L.ON

Adjustabl

e ON

Delay

-xxxxxC

-xxxxxF

-xxxxxI

1

-xxxxxM

Q1 = L.ON

Q2 = L.ON

-xxxxxI

2

Q1 = D.ON

ELECTRICAL INSTALLATION 6

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13

Q2 = D.ON

Adjustabl

e OFF

Delay

-xxxxxD

-xxxxxG

-xxxxxK

1

-xxxxxN

Q1 = L.ON

Q2 = L.ON

-xxxxxK

2

Q1 = D.ON

Q2 = D.ON

1

L/D Selection Switch in in the “L” Light Switching position

2

L/D Selection Switch in in the “D” Dark Switching position

Table 7: Output ACTIVE states for HL18-Axxxx_ variants with adjustable time delay

HL18-Axxxx_

No Time Delay

Q1 = D.ON

Q2 = D.ON

Adjustabl

e ON

Delay

-xxxxxC

-xxxxxF

-xxxxxI

1

-xxxxxM

Q1 = D.ON

Q2 = D.ON

-xxxxxI

2

Q1 = L.ON

Q2 = L.ON

6 ELECTRICAL INSTALLATION

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Adjustabl

e OFF

Delay

-xxxxxD

-xxxxxG

-xxxxxK

1

-xxxxxN

Q1 = D.ON

Q2 = D.ON

-xxxxxK

2

Q1 = L.ON

Q2 = L.ON

1

L/D Selection Switch in in the “D” Dark Switching position

2

L/D Selection Switch in in the “L” Light Switching position

Table 8: Q1 output ACTIVE states for Dark Switching variants with Alarm/Health and adjustable

time delay

HL18-Vxxxx_

HL18-Wxxxx_

HL18-Gxxxx_

HL18-Hxxxx_

No Time Delay Q1 = L.ON

Adjustabl

e ON

Delay

-xxxxxC

-xxxxxF

-xxxxxI

1

-xxxxxM

Q1 = L.ON

-xxxxxI

2

Q1 = D.ON

Adjustabl

e OFF

Delay

-xxxxxD

-xxxxxG

-xxxxxK

1

-xxxxxN

Q1 = L.ON

-xxxxxK

2

Q1 = D.ON

1

L/D Selection Switch in in the “L” Light Switching position

2

L/D Selection Switch in in the “D” Dark Switching position

ELECTRICAL INSTALLATION 6

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Table 9: Q1 output ACTIVE states for Dark Switching variants with Alarm/Health and adjustable

time delay

HL18-Xxxxx_

HL18-Yxxxx_

HL18-Jxxxx_

HL18-Kxxxx_

No Time Delay Q1 = D.ON

Adjustabl

e ON

Delay

-xxxxxC

-xxxxxF

-xxxxxI

1

-xxxxxM

Q1 = D.ON

-xxxxxI

2

Q1 = L.ON

Adjustabl

e OFF

Delay

-xxxxxD

-xxxxxG

-xxxxxK

1

-xxxxxN

Q1 = D.ON

-xxxxxK

2

Q1 = L.ON

1

L/D Selection Switch in in the “D” Dark Switching position

2

L/D Selection Switch in in the “L” Light Switching position

7 Commissioning

1 Alignment

Red light: Align the sensor with a suitable reflector. Select the position so that the red emit‐

ted light beam hits the center of the reflector. Tip: Use the signal strength light bar on the

back of the sensor to help you align it correctly. The sensor must have a clear view of the

reflector, with no object in the path of the beam [see figure 1]. You must ensure that the

optical openings of the sensor and reflector are completely clear.

Figure 1: Alignment

7 COMMISSIONING

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Optimized alignment can be achieved and verified by using the signal strength light bar

located on the back of the sensor. The LEDs on the light bar will illuminate corresponding

to the signal strength light received by the sensor. When no or only red LEDs are illumi‐

nated, the sensor is receiving no or too little signal to switch the output. The first yellow

LED will illuminate at the minimum switching threshold and the green LEDs will continue to

illuminate as the received light increases.

0 %

100 %

0 %

100 %

0 %

100 %

0 %

100 %

0 %

100 %

Figure 2: Signal strength light bar during alignment

2 Sensing range

Adjust the distance between the sensor and the reflector according to the corresponding

diagram (x = sensing range, y = operating reserve).

NOTE

Note the minimum sensing range between sensor and reflector depending on the reflector.

0 1

(3.28)

2

(6.56)

3

(9.84)

4

(13.12)

5

(16.40)

6

(19.67)

7

(22.97)

100

10

1

Operating reserve

Distance in m (feet)

6 2 1

Figure 3: HL18: Operating reserve

1

Reflector PL80A

2

Reflector PL40A

6

Reflective tape IREF6000 (REF-

IRF-56)

10

1

Operating reserve

2

3

1

5

6

0 1

(3.28)

0.5

(1.64)

1.5

(4.92)

2.5

(8.20)

3.5

(11.48)

2

(6.56)

3

(9.84)

Distance in m (feet)

Figure 4: HL18G/HL18T: Operating

reserve

1

Reflector PL80A

2

Reflector PL40A

3

Reflector P250F

5

Reflective tape REF-AC1000

6

Reflector PL41F

COMMISSIONING 7

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17

0 2

(6.56)

4

(13.12)

6

(19.67)

8

(26.25)

10

(32.81)

12

(39.37)

100

10

1

Operating reserve

Distance in m (feet)

6 2 1

3

4

5

Figure 5: HL18L: Operating reserve

1

Reflector PL80A

2

Reflector P250F

3

Reflector PL10F

4

Reflector PL23 FT

5

Reflective tape REF-AC1000

6

Reflective tape IREF6000 (REF-

IRF-56)

3 Sensitivity setting

Sensor which it is not possible to set: The sensor is adjusted and ready for operation.

Refer to graphic to check the function. If the switching output fails to behave in accordance

with graphic, check application conditions. See section Fault diagnosis.

Sensor with potentiometer:

The sensitivity is adjusted with the potentiometer (type: 270°). Clockwise rotation: operat‐

ing reserve increased; counterclockwise rotation: operating reserve reduced. We recom‐

mend setting the potentiometer to “Maximum”. A lower operating reserve may be neces‐

sary for depolarizing surfaces, very small objects, or translucent objects.

HL18T: Clear material sensor with standard potentiometer sensitivity adjustment:

Adjustment for detecting transparent objects (> 10 % damping): Place object between sen‐

sor and reflector. Reduce sensitivity (turn potentiometer (type: 270° counterclockwise)

until the yellow signal LED on top and back of the sensor is off. If the sensor equipped with

a signal strength light bar, only red LEDs on the light bar should be illuminated.

Remove the transparent object. If the yellow signal LED is illuminated the setup is com‐

plete. If the sensor is equipped with a signal strength light bar the yellow and possibly

some green LEDs will be illuminated.

If the yellow signal LED does not illuminate when the transparent object is removed, check

the alignment and application conditions.

HL18G: Clear material sensor with teach and AutoAdapt sensitivity adjustment:

Clockwise rotation past half the available rotation will initiate the teach process. Counter‐

clockwise rotation below half the available rotation will complete the teach procedure and

return the sensor to run mode.

There are three teach modes:

•

Mode 1: Switching when signal attenuation from the transparent object is > 10%. Typ‐

ically used for highly transparent targets such as PET bottles.

•

Mode 2: Switching when signal attenuation from the transparent object is > 18%. Typ‐

ically used for clear glass objects.

•

Mode 3: Switching when signal attenuation from the transparent object is > 40%. Typ‐

ically used for colored glass or opaque objects.

Before starting the teach procedure create a clear path between the sensor and reflector.

Then turn the potentiometer clockwise past half rotation. The yellow signal LED on top and

back of the sensor will turn off for a moment to indicate that teach has been initiated. After

7

COMMISSIONING

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~1 second, the yellow LED will start flashing to indicate that the teach modes are ready.

Selection of the desired teach mode is achieved by keeping the potentiometer in the same

past half rotation position for more a given amount of time.

•

Mode 1: 1...5 seconds

•

Mode 2: 5...10 seconds

•

Mode 3: > 10 seconds

Note that the green signal LED on top and back of the sensor will flash one when the teach

mode has changed.

Once the desired teach mode is selected, turn the potentiometer counterclockwise below

half the available rotation. The teach procedure is complete. Check the detection by mov‐

ing the transparent target between the sensor and reflector, as illustrated in Image: G, and

confirming the yellow LED changes state when the target is present. If not, check the align‐

ment and application conditions.

NOTE

Note that the HL18G lightbar operation is automatically managed via the teach and

AutoAdapt features. An HL18G sensor will always try to maintain the signal such that only

the red and yellow LEDs will be illuminated with a clear view to the reflector.

The sensor is adjusted and ready for operation.

4 Alarm output

Alarm output: The sensor (HL18(G/T)(L)) features a pre-failure notification output (“Q2” in

connection diagram [B], if the alarm option is selected), which issues a notification if the

signal strength of the light being received is not sufficient. Possible causes: Sensor or

reflector is contaminated, sensor is out of alignment. In the good state: LOW (U

V

< V); if

excessively contaminated: HIGH (>+U

V

- V). The LED indicator flashes in this case.

Health output: The sensor (HL18(G/T)(L)) features a health status notification output ("Q2"

in connection diagram [B], if the health option is selected), which issues a notification if

the signal strength of the light being received is sufficient. Possible causes, if the signal

strength is not sufficient: Sensors are contaminated, sensors are out of alignment, or

cable is damaged. In the good state: HIGH (>+U

V

- V); if excessively contaminated or in the

event of cable interruption: LOW (U

V

< V). The LED indicator flashes in this case.

Time types: HL18(G/T)(L) with optional On-delay or Off-Delay adjustment: t0 = no time

delay, t1 = time delay when object is detected, t2 = time delay when no object is detected.

The time setting can be selected using the potentiometer according to A.

Timer stages can be set from 0 to 2 seconds.

8 Troubleshooting

The Troubleshooting table indicates measures to be taken if the sensor stops working.

Table 10: Troubleshooting

LED indicator/fault pattern Cause Measures

Yellow LED does not light up

even though the light beam is

aligned to the reflector and

there is no object in the path of

the beam

No voltage or voltage below

the limit values

Check the power supply,

check all electrical connec‐

tions (cables and plug connec‐

tions)

Voltage interruptions Ensure there is a stable power

supply without interruptions

Sensor is faulty If the power supply is OK,

replace the sensor

Yellow LED flashes; if Health is

present then take note of the

corresponding output signal; if

Sensor is still ready for opera‐

tion, but the operating condi‐

tions are not ideal/addition‐

ally with health output: power

supply interrupted

Check the operating condi‐

tions: Fully align the beam of

light (light spot) with the

reflector. / Clean the optical

surfaces (sensor and reflec‐

TROUBLESHOOTING 8

8017290.16K9 | SICK

Subject to change without notice

19

LED indicator/fault pattern Cause Measures

Alarm is present then take note

of the corresponding output

signal

tor) / If the potentiometer is

set to the max. sensitivity:

Reduce the distance between

the sensor and the reflector,

and check the reflector type /

Reflector is not suitable for

the application in question

(we recommend only using

SICK reflectors) chapter 7 /

Check sensing range and

adjust if necessary, see fig‐

ures in chapter 7. / With

health output: Check the volt‐

age supply, check all electrical

connections (cables and plug

connections).

Signal interruptions when

object is detected

Depolarizing property of the

object surface (e.g., tape),

reflection

Reduce sensitivity or change

the position of the sensor

9 Disassembly and disposal

The sensor must be disposed of according to the applicable country-specific regula‐

tions. Efforts should be made during the disposal process to recycle the constituent

materials (particularly precious metals).

NOTE

Disposal of batteries, electric and electronic devices

•

According to international directives, batteries, accumulators and electrical or

electronic devices must not be disposed of in general waste.

•

The owner is obliged by law to return this devices at the end of their life to the

respective public collection points.

•

WEEE: This symbol on the product, its package or in this document, indi‐

cates that a product is subject to these regulations.

10 Maintenance

SICK sensors are maintenance-free.

We recommend doing the following regularly:

•

Clean the external lens surfaces

•

Check the screw connections and plug-in connections

No modifications may be made to devices.

Subject to change without notice. Specified product properties and technical data are

not written guarantees.

9 DISASSEMBLY AND DISPOSAL

20

8017290.16K9 | SICK

Subject to change without notice

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SICK SureSense - HL18 Hybrid photoelectric sensors Operating instructions

SICK SureSense - HL18 Hybrid photoelectric sensors Operating instructions

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