# DISTANCE PHOTO
**URL**: https://novapart.co/products/QS18AB6AF40/distance-photo
**SKU**: QS18AB6AF40
**Manufacturer**: BANNER ENGINEERING
**Price**: €124.2400
**Stock**: 10+
**Lead Time**: 53 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:4769270/)
QS18AF40 Mechanically Adjustable Background Suppression Sensor (15-40mm)
## Features
Compact sensors featuring precise adjustment of cutoff distance and background suppression mode
- Short-range models for precise adjustment of cutoff distance
- • Exceptional optical performance; 15 mm to 40 mm adjustable range in compact QS18 housing • Background suppression models for reliable detection of objects when the background condition is not controlled or fixed
- Simple multi-turn screw adjustment of cutoff distance
- • Enhanced immunity to fluorescent lights • Crosstalk immunity algorithm allows two sensors to be used in close proximity • Visible red emitter
## WARNING:
- Do not use this device for personnel protection
- Using this device for personnel protection could result in serious injury or death.
- This device does not include the self-checking redundant circuitry necessary to allow its use in personnel safety applications. A device failure or malfunction can cause either an energized (on) or de-energized (off) output condition.
## Models
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**----- Start of picture text -----**
Models Supply Voltage Sensing Range Output Type
QS18VN6AF40 NPN
QS18VP6AF40 10 to 30 V DC 15 to 40 mm adjustable range PNP
QS18AB6AF40 Bipolar (1 NPN & 1 PNP)
**----- End of picture text -----**
Only standard 2 m (6.5 ft) cable models are listed.
- To order 9 m (30 ft) cable models: add suffix “ W/30 ” to the model number (for example, QS18VN6AF40 W/30 )
- To order QD models: For 150 mm (6 in) cable with 4-pin AC Micro-style QD, add suffix “Q2” to the model number (for example, QS18VN6AF40Q2 ). A model with a QD connector requires an accessory mating cordset; see " Quick-Disconnect (QD) Cordsets " on page 6
- To order 600 V cable models: Standard models are supplied with 300 V cable. For 600 V cable, add suffix “C1” to the model number (for example, QS18VN6AF40C1 ).
## Overview
WORLD-BEAM QS18AF40 Adjustable Field Sensor with Background Suppression ignore objects beyond the set cutoff distance. Background suppression mode can be used in most situations with varying object color and position or with varying background conditions.
The short-range models offer precise cutoff capability for short range applications. With an adjustable cutoff distance of 15 to 40 mm, thinner objects closer to the background can be detected.
**==> picture [81 x 41] intentionally omitted <==**
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2
1
EY
3
**----- End of picture text -----**
1. Green: Power Indicator
2. Yellow: Light Sensed Indicator (Flashes for Marginal Conditions)
3. Cutoff Point Adjustment Screw
Original Instructions 12-Aug-25
© Banner Engineering Corp. All rights reserved.
www.bannerengineering.com
p/n: 149288 Rev. H
QS18AF40 Mechanically Adjustable Background Suppression Sensor (15-40mm)
## Installation Instructions
## Sensor Orientation for a QS18AF BGS
To ensure reliable detection, orient the sensor as shown in relation to the target to be detected.
_Optimal Orientation of Target to Sensor_
## Wiring Diagrams
Cabled wiring diagrams are shown.Quick disconnect wiring diagrams are functionally identical.
**==> picture [448 x 194] intentionally omitted <==**
**----- Start of picture text -----**
NPN (sinking) outputs PNP (sourcing) outputs
Light operate bipolar outputs
bu (3) – bn (1) + bn (1) +
bn (1) 10-30 V DC+ bu (3) 10–30 V DC– bu (3) 10–30 V DC–
bk (4) Load Light operate bk (4) Load Light operate wh (2) Load
wh (2) Load Dark operate wh (2) Load Dark operate bk (4) Load
4-pin M12 Male 4-pin M8 Male 1. Brown
1
2 4 2. White
2
4 3. Blue
1 3
3 o 4. Black
**----- End of picture text -----**
In dark operate (DO) mode, the output is ON when the target returns less light to the sensor than the configured target and OFF when the sensor detects more light than the configured/taught target.
In light operate (LO) mode, the output is ON when the target returns the same or more light to the sensor and OFF when the sensor detects less light than the configured/taught target.
In adjustable field sensing modes, light operate is active when the target is present and dark operate is active when the target is absent.
## Configure the QS18AF with Background Suppression (BGS)
Background Suppression: Objects beyond the set cutoff distance are not detected. Background suppression mode can be used in most situations with varying object colors and positions or with varying background conditions.
To ensure reliable background suppression, a minimum separation distance between the object and the background is necessary. See to determine the minimum separation distance.
page 2 of 8
© Banner Engineering Corp. All rights reserved. www.bannerengineering.com
12-Aug-25
QS18AF40 Mechanically Adjustable Background Suppression Sensor (15-40mm)
_Set the cutoff distance approximately midway between the farthest object and the closest background_
**==> picture [210 x 595] intentionally omitted <==**
**----- Start of picture text -----**
Object Background
Y
X
Cutoff
Distance
counter-clockwise until the yellow indicator turns off
clockwise until the yellow indicator turns on .
clockwise , counting the revolutions, until the yellow indicator turns
counter-clockwise
Background Suppression Mode Application Example
Y
X
**----- End of picture text -----**
## X: Distance to the Object
## Y: Minimum Separation Between the Object and the Background
1. Mount the sensor with the darkest object at the longest application distance. The distance to the object must be less than shown in the Minimum Separation Distance figure in for your object color.
2. Turn the adjustment potentiometer counter-clockwise until the yellow indicator turns off (5 turns maximum).
3. Turn the adjustment potentiometer clockwise until the yellow indicator turns on .
- Replace the darkest object with the brightest background at the closest application distance.
4.
- Turn the adjustment potentiometer clockwise , counting the revolutions, until the yellow indicator turns on .
5.
6. Turn the adjustment potentiometer counter-clockwise half of the number of turns from step 5. This places the cutoff distance midway between the object and the background switchpoints. The sensor is ready for operation.
## Example QS18AF BGS Sensor Configuration
An object with a reflectivity similar to black paper is set 30 mm away from the sensor. A background with a reflectivity similar to white paper is set 40 mm away from the sensor.
According to the Minimum Separation Distance figure in , the minimum separation distance between the object and the background is 0.7 mm. In this application, reliable detection is achieved when set up according to the procedure outlined in .
1. Object
2. Conveyor
3. Background
X: Distance to the Object = 30 mm
- Y: Minimum Separation Between the Object and the Background > 0.7 mm
© Banner Engineering Corp. All rights reserved. www.bannerengineering.com
page 3 of 8
12-Aug-25
QS18AF40 Mechanically Adjustable Background Suppression Sensor (15-40mm)
## Output States
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**----- Start of picture text -----**
||||||
|---|---|---|---|---|
|Background Suppression Mode|
|Object Between Minimum|
|Object Inside Minimum Sensing|
|Sensor Model Type|Output|Sensing Range and Cutoff|Object Beyond Cutoff Distance|
|Range|Distance|
|All Models|Yellow Indicator Light|Undefined|ON|OFF|
|Black Wire (Pin 4)|Undefined|ON|OFF|
|Complementary Models|
|White Wire (Pin 2)|Undefined|OFF|ON|
|Black Wire (Pin 4)|Undefined|ON|OFF|
|Bipolar Models|
|White Wire (Pin 2)|Undefined|ON|OFF|
**----- End of picture text -----**
## Specifications
Supply Voltage 10 V DC to 30 V DC (10% maximum ripple within specified limits) at less than 16 mA, exclusive of load
Sensing Beam
Visible red LED, 630 nm
Supply Protection Circuitry
Protected against reverse polarity and transient voltages
## Output Configuration
Solid-state complementary: NPN or PNP (current sinking or sourcing), or bipolar (both sinking and sourcing) depending on model;
Rating: 100 mA total output current
Off-state leakage current: < 50 µA at 30 V dc
ON-state saturation voltage: < 1.5 V at 10 mA; < 3.0 V at 100 mA
Protected against false pulse on power-up and continuous overload or short circuit of outputs
## Connections
2 m (6.5 ft) 4-wire PVC cable, 9 m (30 ft) PVC cable, or 4-pin M8 or M12 150 mm (6 in) cable quick-disconnect connector, depending on model
## Operating Conditions
Relative Humidity: 95% relative humidity at 50 °C (noncondensing)
Temperature: –20 °C to 55 °C (–4 °F to 131 °F)
Certifications
Banner Engineering BV Park Lane, Culliganlaan 2F bus 3 1831 Diegem, BELGIUM
Turck Banner LTD Blenheim House Blenheim Court Wickford, Essex SS11 8YT GREAT BRITAIN
## Application Notes
For mirror-like objects, minimize the sensor-to-object mounting distance and tilt the sensor so reflected light is directed away from the sensor when the object is present.
Required Overcurrent Protection
## Construction
ABS housing, acrylic lens cover; PVC cable, nickel-plated brass connector, metal adjustment pot
## Output Response
## 2.8 millisecond ON/OFF
Note: 200-millisecond delay on power-up; outputs do not conduct during this time
## Adjustments
Five-turn adjustment screw sets cutoff distance between min. and max. positions clutched at both ends of travel
## Repeatability
## 250 µs
WARNING: Electrical connections must be made by qualified personnel in accordance with local and national electrical codes and regulations.
Overcurrent protection is required to be provided by end product application per the supplied table.
Overcurrent protection may be provided with external fusing or via Current Limiting, Class 2 Power Supply. Supply wiring leads < 24 AWG shall not be spliced. For additional product support, go
to www.bannerengineering.com.
## Indicators
Two LED indicators on sensor top:
Green solid: Power on Amber solid: Light sensed Amber flashing: Marginal sensing condition Environmental Rating IEC IP67; NEMA 6; UL Type 1
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|||||
|---|---|---|---|
|Supply|Supply|
|Required Overcurrent|Required Overcurrent|
|Wiring|Wiring|
|Protection (A)|Protection (A)|
|(AWG)|(AWG)|
|20|5.0|26|1.0|
|22|3.0|28|0.8|
|24|2.0|30|0.5|
**----- End of picture text -----**
## FCC Part 15 Class A for Unintentional Radiators
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
(Part 15.21) Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
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© Banner Engineering Corp. All rights reserved. www.bannerengineering.com
12-Aug-25
QS18AF40 Mechanically Adjustable Background Suppression Sensor (15-40mm)
## Industry Canada ICES-003(A)
This device complies with CAN ICES-3 (A)/NMB-3(A). Operation is subject to the following two conditions: 1) This device may not cause harmful interference; and 2) This device must accept any interference received, including interference that may cause undesired operation.
Cet appareil est conforme à la norme NMB-3(A). Le fonctionnement est soumis aux deux conditions suivantes : (1) ce dispositif ne peut pas occasionner d'interférences, et (2) il doit tolérer toute interférence, y compris celles susceptibles de provoquer un fonctionnement non souhaité du dispositif.
## Performance Curves
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Minimum Sensing Range (Dead Zone) vs. 90% White Cutoff Setting Typical Emitter Spot Diameter vs. Distance
10 4.5
9 4.0
8 3.5
7
3.0
6
2.5
5
2.0
4
3 1.5
2 1.0
1 0.5
0 0.0
15 20 25 30 35 40 0 5 10 15 20 25 30 35 40
90% White Card Cutoff Setting (mm) Distance (mm)
Minimum Separation Distance Between Object and Background: Background
Suppression Mode
Object Background
3.0
Object/Background
2.5
Black/White
2.0
Y
1.5
X
1.0
Gray/White Cutoff
0.5 Distance
White/White X: Distance to Object (mm)
0.0
0 5 10 15 20 25 30 35 40 45 50 Y: Minimum Separation Between Object and Background (mm)
Distance (mm)
Excess Gain Curve with 15 mm Cutoff (based on 90% White Card) Excess Gain Curve with 40 mm Cutoff (based on 90% White Card)
1000
100
100
10
10
1 1
1 10 100 1 10 100
Distance (mm) Distance (mm)
Min. Sensing Range (mm) Emitter Spot Diameter (mm)
Minimum Separation (mm)
Excess Gain Excess Gain
**----- End of picture text -----**
**==> picture [241 x 157] intentionally omitted <==**
**----- Start of picture text -----**
Minimum Separation Distance Between Object and Background: Background
Suppression Mode
3.0
Object/Background
2.5
Black/White
2.0
1.5
1.0
Gray/White
0.5
White/White
0.0
0 5 10 15 20 25 30 35 40 45 50
Distance (mm)
Minimum Separation (mm)
**----- End of picture text -----**
© Banner Engineering Corp. All rights reserved. www.bannerengineering.com
page 5 of 8
12-Aug-25
QS18AF40 Mechanically Adjustable Background Suppression Sensor (15-40mm)
## Dimensions
All measurements are listed in millimeters [inches], unless noted otherwise. The measurements provided are subject to change.
**==> picture [385 x 393] intentionally omitted <==**
**----- Start of picture text -----**
5.5 mm
(0.22")
7.5 mm
(0.30")
i
+—[ool
9.0 mm
15.0 mm 21.0 mm (0.35")
(0.83") 5.2 mm
(0.59")
3.8 mm (0.20") 3.0 mm
(0.15")
(0.12")
34.5 mm 24.1 mm
(1.36") (0.95")
12.0 mm
(0.47")
M2.5
M3 Hardware
Hardware
Included*
Included*
3.8 mm
(0.15") *M3 Hardware for Sidemount
13.4 mm M2.5 Hardware for Mounting
(0.53") to Threaded Inserts
Max. torque 0.6 nm (5 in. lbs)
(2) M3 x 0.5 x 20 mm ss screw
(2) M3 x 0.5 ss hex nut
(2) M3 ss washer
(2) M2.5 x 0.45 x 5 mm ss screw
(2) M2.5 ss washer
**----- End of picture text -----**
## Accessories
## Quick-Disconnect (QD) Cordsets
Use the M8 cordsets with QS18 with Q suffix; use the M12 cordsets with QS18 with Q5 suffix.
**==> picture [465 x 81] intentionally omitted <==**
**----- Start of picture text -----**
4-Pin Single-Ended Snap-on M8 Female Cordsets
Model Length Style Dimensions Pinout (Female)
32 Typ.
4 2
1 = Brown
2 = White
PKG4-2 2.03 m (6.66 ft) Straight 3 1 3 = Blue
ø 9.0 4 = Black
je &
**----- End of picture text -----**
page 6 of 8
© Banner Engineering Corp. All rights reserved. www.bannerengineering.com
12-Aug-25
QS18AF40 Mechanically Adjustable Background Suppression Sensor (15-40mm)
**==> picture [500 x 344] intentionally omitted <==**
**----- Start of picture text -----**
4-pin Single-Ended M12 Female Cordsets
Model Length Dimensions (mm) Pinout (Female)
BC-M12F4-22-1 1 m (3.28 ft) 44 Typ.
BC-M12F4-22-2 2 m (6.56 ft)
BC-M12F4-22-5 5 m (16.4 ft)
BC-M12F4-22-8 8 m (26.25 ft) M12 x 1 2 1 = Brown
ø 14.5 1 2 = White
BC-M12F4-22-10 10 m (30.81 ft) 3 = Blue
Ø5.2 mm 3 4 = Black
BC-M12F4-22-15 15 m (49.2 ft) 4 5 5 = Unused
BC-M12F4-22-20 20 m (65.61 ft)
7 mm
BC-M12F4-22-25 25 m (82.02 ft)
58 mm
BC-M12F4-22-30 30 m (98.42 ft)
4-pin Single-Ended M12 Female Right-Angle Cordsets
Model Length Dimensions (mm) Pinout (Female)
BC-M12F4A-22-1 1 m (3.28 ft) 32 Typ.
[1.26"]
BC-M12F4A-22-2 2 m (6.56 ft)
BC-M12F4A-22-5 5 m (16.4 ft)
30 Typ.
BC-M12F4A-22-8 8 m (26.25 ft) [1.18"] 2
3
BC-M12F4A-22-10 10 m (30.81 ft) 1 = Brown
1 2 = White
M12 x 1 4 3 = Blue
ø 14.5 [0.57"] 4 = Black
5 = Unused
Ø5.2 mm
BC-M12F4A-22-15 15 m (49.2 ft)
7 mm
58 mm
**----- End of picture text -----**
## Sensor Status Indicators
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**----- Start of picture text -----**
S15L Series In-Line Sensor Status Indicator
Model Input LED Color Dimensions Female Male Wiring
Type
S15LGYPQ PNP 57.8
[2.27] 1 1 = Brown, 10 to 30 V DC
Power ON = 27.9 2 2 2 = White
Green [1.1] 1
4
S15LGYNQ NPN Input Active = Yellow 15.0 4 3 3 3 = Blue, DC common
[0.59] 4 = Black, Sensor Input
**----- End of picture text -----**
## Mounting Brackets
All measurements are listed in millimeters, unless noted otherwise. The measurements provided are subject to change.
- 19 25
- SMBQS18A • Wrap-around protection bracket • Die-cast bracket • Base fits 18 mm threaded hole • Metal hex nut, lock washer and grommet included 62 A • Mounting holes specially designed for QS18AF sensors
Hole size: A = ø 15.3
© Banner Engineering Corp. All rights reserved. www.bannerengineering.com
page 7 of 8
12-Aug-25
QS18AF40 Mechanically Adjustable Background Suppression Sensor (15-40mm)
## SMBQS18AF
- Right-angle mounting bracket
- • 14-ga. 304 stainless steel
Hole center spacing: A to B = 20.3 Hole size: A = 4.3 × 9.4, B = ø 4.3
**==> picture [61 x 46] intentionally omitted <==**
**----- Start of picture text -----**
A 44
B
15
32
**----- End of picture text -----**
## Product Support and Maintenance
## Clean Sensor with Compressed Air Then Isopropyl Alcohol
Handle the sensor with care during installation and operation. Sensor windows soiled by fingerprints, dust, water, oil, etc. create stray light that may degrade the peak performance of the sensor.
Blow dust from the sensor using filtered, compressed air. If the sensor is still dirty, gently wipe the sensor with a dry optical cloth. If the dry optical cloth does not remove all residue, use 70% isopropyl alcohol on a clean optical cloth, then dry with a clean dry optical cloth and blow with filtered, compressed air. Do not use any other chemicals for cleaning.
## Contact Us
Banner Engineering Corp. | 9714 Tenth Avenue North | Plymouth, MN 55441, USA | Phone: + 1 888 373 6767
For worldwide locations and local representatives, visit www.bannerengineering.com.
## Banner Engineering Corp Limited Warranty
Banner Engineering Corp. warrants its products to be free from defects in material and workmanship for one year following the date of shipment. Banner Engineering Corp. will repair or replace, free of charge, any product of its manufacture which, at the time it is returned to the factory, is found to have been defective during the warranty period. This warranty does not cover damage or liability for misuse, abuse, or the improper application or installation of the Banner product.
THIS LIMITED WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED (INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), AND WHETHER ARISING UNDER COURSE OF PERFORMANCE, COURSE OF DEALING OR TRADE USAGE.
This Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO EVENT SHALL BANNER ENGINEERING CORP. BE LIABLE TO BUYER OR ANY OTHER PERSON OR ENTITY FOR ANY EXTRA COSTS, EXPENSES, LOSSES, LOSS OF PROFITS, OR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY PRODUCT DEFECT OR FROM THE USE OR INABILITY TO USE THE PRODUCT, WHETHER ARISING IN CONTRACT OR WARRANTY, STATUTE, TORT, STRICT LIABILITY, NEGLIGENCE, OR OTHERWISE.
Banner Engineering Corp. reserves the right to change, modify or improve the design of the product without assuming any obligations or liabilities relating to any product previously manufactured by Banner Engineering Corp. Any misuse, abuse, or improper application or installation of this product or use of the product for personal protection applications when the product is identified as not intended for such purposes will void the product warranty. Any modifications to this product without prior express approval by Banner Engineering Corp will void the product warranties. All specifications published in this document are subject to change; Banner reserves the right to modify product specifications or update documentation at any time. Specifications and product information in English supersede that which is provided in any other language. For the most recent version of any documentation, refer to: www.bannerengineering.com.
For patent information, see www.bannerengineering.com/patents.
page 8 of 8
© Banner Engineering Corp. All rights reserved. www.bannerengineering.com
12-Aug-25
## Links
- [View this product on Novapart](https://novapart.co/products/QS18AB6AF40/distance-photo)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/banner-engineering/qs18ab6af40/distance-photo/dp/4769270)
---
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