Leuze RKU318 Data Sheet

10 - 30 V

DC

IP 67

IEC 60947...

IEC 60947...

RKU318 Ultrasonic sensors with 1 switching output

Dimensioned drawing

en 01-2017/02 50135809

0 … 400mm

0 … 1600mm

 Function largely independent of surface

properties, ideal for detection of liquids,
bulk materials, transparent media, …

 Small dead zone at long scanning range
 Adjustment of the reflector distance can be

taught

 NO/NC function reversible
 1 switching output (PNP or NPN)
 NEW – Stable plastic design
 NEW – Temperature-compensated

scanning range

Accessories:

(available separately)

 Mounting systems
 Mounting adapter M18-M30:

BTX-D18M-D30 (Part no. 50125860)

 Cables with M12 connector

(KD …)

 Teach adapter PA1/XTSX-M12

(Part no. 50124709)

We reserve the right to make changes • PAL_RKU318_400_1600_1SWO_en_50135809.fm

A Active sensor surface
B Teach-in button
C Indicator diodes

Electrical connection

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone]
[e-mail] • www.leuze.com

RKU318-400…-M12 - 01

RKU318-1600…-M12 - 01

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (plate 100x 100mm)

Reflector

-100

-50

0

50

100

0 100 200 300 400 500

y1

y2

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (rod Ø 25 mm)

Reflector

-300

-200

0

100

-100

200

300

0 400 800 16001200

y1

y2

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (plate 200x 200mm)

Reflector

-300

-200

0

100

-100

200

300

0 400 800 16001200

y1

y2

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (rod Ø 25 mm)

Reflector

Object distance [mm]

Target (fixed):

plate or rod

Sound cone

= f (α,x)

RKU318

Technical data

Ultrasonic specifications RKU318-400/…-M12 RKU318-1600/…-M12

Operating range
Reflector distance 100 … 400mm 250 … 1600mm
Object distance to background (reflector) ≥ 100 mm ≥ 250 mm
Ultrasonic frequency 300kHz 230kHz
Typ. opening angle 8° ± 2 ° 8° ± 2°
Resolution <2mm <2mm
Direction of beam Axial Axial
Reproducibility ± 0.5%
Switching hysteresis 1% 3) 1%
Temperature drift ≤ 5%

Timing

Switching frequency 8Hz 1 Hz
Response time 62ms 500ms
Readiness delay < 500ms < 500ms

Electrical data

Operating voltage U
Residual ripple ± 5% of U
Open-circuit current ≤ 50mA
Switching output …/4…

Function NO (normally open), preset
Output current Max. 100 mA
Setting the reflector distance Teach-in button 2 … 7s
Changeover NO/NC Teach-in button > 12s

Indicators

Yellow LED OUT1: object detected
Flashing yellow and green LEDs Teach-in / teaching error
Green LED Object within the scanning range

Mechanical data

Housing Plastic (PBT)
Active surface Epoxy resin, glass fiber rein-

Weight 70g

Ultrasonic transducer Piezoceramic

Connection type M 12 connector, 4-pin
Fitting position Any

Environmental data

Ambient temp. (operation/storage) -20° … +70°C/-20° … +70°C
Protective circuit
VDE protection class III
Degree of protection IP 67
Standards applied EN 60947-5-2
Certifications UL 508, CSA C22.2 No.14-13

1) At 20°C

2) Target: 100mm x 100 mm plate

3) Target: 200mm x 200 mm plate

4) From end value

5) Over the temperature range -20°C … +70°C

6) For UL applications: use is permitted exclusively in Class 2 circuits according to NEC

7) The ceramic material of the ultrasonic transducer contains lead zirconium titanate (PZT)

8) 1=short-circuit and overload protection, 2=polarity reversal protection, 3=wire break and inductive protection

9) These proximity switches shall be used with UL Listed Cable assemblies rated 30V, 0.5 A min,
in the field installation, or equivalent (categories: CYJV/CYJV7 or PVVA/PVVA7)

1)

6)

B

0…400mm 2)

1) 4)

5)

0 … 1600mm 3)

±0.5% 1)

3)

≤ 5% 4)

10 … 30V DC (incl. ± 5% residual ripple)

B

3)

1 PNP transistor switching output

…/2…

1 NPN transistor switching output

forced

7)

8)

1, 2, 3

6) 9)

Diagrams

RKU318-400/…-M12

100

50

0

-50

-100
0 100 200 300 400 500

RKU318-1600/…-M12

y2

y1

RKU318-400…-M12 - 01 2017/02
RKU318-1600…-M12 - 01

Notes

Observe intended use!

 This product is not a safety sensor

and is not intended as personnel
protection.

 The product may only be put into

operation by competent persons.

 Only use the product in accor-

dance with its intended use.