Leuze DMU318 Data Sheet

10 - 30 V

DC

4...20 mA

0...10

V

IP 67

IEC 60947...

IEC 60947...

DMU318 Ultrasonic sensors with analog output

Dimensioned drawing

en 01-2017/02 50111303

40 … 300mm

80 … 1200mm

 Function largely independent of surface

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

 Small dead zone at long scanning range
 1 analog output 0 … 10V or 4 … 20mA
 Teachable characteristic curve
 Extra short construction
 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_DMU318_300_1200_en_50111303.fm

A Active sensor surface
B Indicator diodes

Electrical connection

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen

DMU318-300…-M12 - 01

DMU318-1200…-M12 - 01

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (plate 100x 100mm)

-100

-50

0

50

100

0 50 100 150 200 250 300 350

y1

y2

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (rod Ø 25 mm)

-200

-100

0

100

200

0 200 400 600 800 140012001000

y1

y2

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (plate 100x 100mm)

-200

-100

0

100

200

0 200 400 600 800 140012001000

y1

y2

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (rod Ø 25 mm)

Object distance [mm]

Target (fixed):

plate or rod

Sound cone

= f (α,x)

DMU318

Technical data

Ultrasonic specifications DMU318-300/…-M12 DMU318-1200/…-M12

Scanning range
Adjustment range 40 … 300mm 80 … 1200mm
Ultrasonic frequency 300kHz 200kHz
Typ. opening angle 7° ± 2 ° 8° ± 2 °
Resolution <2mm <2mm
Direction of beam Axial Axial
Reproducibility ± 0.5%
Switching hysteresis 1% 3) 1%
Temperature drift ≤ 5%

Timing

Readiness delay < 100ms < 100ms

Electrical data

Operating voltage U
Residual ripple ± 5% of U
Open-circuit current ≤ 35 mA
Analog output …/C…

Load resistance Current output: R

Characteristic curve adjustment 1-point teach: teach-in (pin 2) 2 … 7s to GND,

Analog output error signal Distance too small: approx. 3.8 mA,

Indicators

Yellow LED Analog OUT: object detected
Yellow and green LEDs flash Teach-in / teaching error
Green LED Object within the scanning range

Mechanical data

Housing Plastic (PBT)
Active surface Epoxy resin, glass fiber reinforced
Weight 65g

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) From end value

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

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

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

7) 1=short-circuit and overload protection, 2=polarity reversal protection, 3=wire break and inductive protection

8) 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)

5)

B

40 … 300mm 2)

1) 3)

4)

80 … 1200mm 2)

±0.5%

3)

≤ 5% 4)

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

B

1) 3)

1 analog output 4 … 20mA

…/V…

1 analog output 0 … 10V

Voltage output: RL≥ 2kΩ

2-point teach: teach-in (pin 2) 7 … 12s to GND,
Characteristic curve inversion: teach-in (pin 2) > 12s to GND

≤ 500 Ω,

L

Distance too large: approx. 11V / approx. 21mA

6)

7)

1, 2, 3

5) 8)

Diagrams

DMU318-300/…-M12

100

50

0

-50

-100
0 50 100 150 200 250 300 350

DMU318-1200/…-M12

y2

y1

DMU318-300…-M12 - 01 2017/02
DMU318-1200…-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.

DMU318 Ultrasonic sensors with analog output

Part number code

DMU318-1200 . 3/CT-M12

Operating principle
HTU Ultrasonic sensor, scanning principle, with background suppression
DMU Ultrasonic sensor, distance measurement
RKU Ultrasonic sensor, retro-reflective ultrasonic sensor principle

Series
318 318 series, cylindrical short M18 design

Scanning range in mm
300 40 … 300
1200 80 … 1200

Equipment (optional)
.3 Teach button on the sensor

Pin assignment of connector pin 4 / black cable wire (analog OUT/OUT1)
4 PNP output, NO contact preset
P PNP output, NC contact preset
2 NPN output, NO contact preset
N NPN output, NC contact preset
C Analog output 4 … 20 mA
V Analog output 0 … 10 V

Pin assignment of connector pin 2 / white cable wire (Teach-IN)
T Teach input

Connection technology
M12 M12 connector, 4-pin

Order guide

The sensors listed here are preferred types; current information at www.leuze.com.

Designation Part no.

Scanning range / Analog output

40 … 300mm / current output 4 … 20mA DMU318-300/CT-M12 50136073
40 … 300mm / voltage output 0 … 10V DMU318-300/VT-M12 50136072
80 … 1200mm / current output 4 … 20mA DMU318-1200/CT-M12 50136077
80 … 1200mm / voltage output 0 … 10V DMU318-1200/VT-M12 50136076

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen DMU318-300…-M12 - 01

DMU318-1200…-M12 - 01

Device functions – analog output

Dead zone

Sensor

Error

Approx.

11V

Approx.

21mA

Start point
0V

4mA

Object distance

Remote error:
Object outside of
the measurement range

Error

Approx.

3.8mA

End point
10V

20mA

Measurement range

Close error:

Object outside of

the measurement range

Dead zone

Sensor

Object distance

Error

Approx.

11V

Approx.

21mA

Error

Approx.

3.8mA

Remote error:
Object outside of
the measurement range

Close error:

Object outside of

the measurement range

Start point
10V

20mA

End point
0V

4mA

Measurement range

Analog output Analog OUT

Rising characteristic curve Falling characteristic curve

DMU318

Note!

When setting the analog output (teach) via the teach input, one rising characteristic curve is always taught; with 2-point
teach, independent of the selected object distances near/far. The characteristic output curve can be inverted, however.

DMU318-300…-M12 - 01 2017/02
DMU318-1200…-M12 - 01

DMU318 Ultrasonic sensors with analog output

Setting the analog output (teach) via the teach input

On delivery, the characteristic output curve of the sensor is set as a rising characteristic curve with spread over the entire scan­ning range: 4 … 20mA or 0 … 10V corresponds to an object distance of 40 … 300mm or 80 … 1200 mm, respectively.

The analog output can be set by means of 1-point teach or 2-point teach.

Note!

When setting the analog output (teach) via the teach input, one rising characteristic curve is always taught; with 2-point
teach, independent of the selected object distances near/far. The characteristic output curve can be inverted, however.

1-point teach of the analog output

By selecting an object distance within the scanning range, the characteristic curve of the analog output can be adjusted.
Leuze Teach Adapter PA1/XTSX-M12 can be used for this purpose.

If an object is located outside of the taught measurement range, an error signal is output. A different analog signal is output here
by the sensor for the errors "distance too close: object outside of the measurement range" and "distance too far: object outside
of the measurement range".

1-point teach - rising characteristic curve

1. Place object at desired distance for the end point of the measurement range.

Note:The minimum object distance for the end of the measurement range is as follows:

2. To adjust analog output Analog OUT, connect the teach-in input to GND for 2…7s until the yellow and green LEDs flash simultaneously at 3Hz.

3. The characteristic curve with plot rising from the start of the range (30 mm or 80 mm) to the set object distance was taught in.

4. Error-free teach: LED states acc. to "Technical data" -> "Indicators".
Faulty teach: green and yellow LEDs flash at 8Hz until an error-free teach is performed.

scanning range of 300mm:70 mm
scanning range of 1200mm:200 mm

2-point teach of the analog output

By selecting 2 object distances within the scanning range, the characteristic curve of the analog output can be adjusted.
Leuze Teach Adapter PA1/XTSX-M12 can be used for this purpose.

If an object is located outside of the taught measurement range, an error signal is output. A different analog signal is output here
by the sensor for the errors "distance too close: object outside of the measurement range" and "distance too far: object outside
of the measurement range".

2-point teach - rising characteristic curve

1. Position the object at the first desired distance (near or far).

2. To adjust analog output Analog OUT, connect the teach-in input to GND for 7 … 12s
until the yellow and green LEDs flash alternately at 3Hz.

3. The sensor remains in teach mode and the LEDs continue to flash.

4. Then position the object at the second desired distance (far or near).

Note:the minimum object distance between the start and end point of the measurement range

5. To complete the teach event, briefly connectthe Teach-IN input to GND again.

The characteristic curve with rising plot from the near to the far object distance was taught in.

6. Error-free teach: LED states acc. to "Technical data" -> "Indicators".
Faulty teach: green and yellow LEDs flash at 8Hz until an error-free teach is performed.

for a scanning range of 300mm is:30mm
for a scanning range of 1200mm is:120mm

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen DMU318-300…-M12 - 01

DMU318-1200…-M12 - 01

DMU318

Inverting the analog output (falling/rising characteristic curve)

The characteristic curve of the analog output can be inverted, e.g., if a falling characteristic output curve is desired.
Leuze Teach Adapter PA1/XTSX-M12 can be used for this purpose.

Inverting the characteristic curve

1. To invert the characteristic curve of the analog output Analog OUT, connect the teach-in input to GND for >12s until the yellow and green LEDs
flash alternately.

2. Disconnect the Teach-IN input from GND. The characteristic curve plot was inverted.
The yellow LED indicates the current setting of the analog output:
ON = rising characteristic curve
OFF = falling characteristic curve

Resetting to factory settings

The sensor can be reset to the factory setting (rising characteristic curve with spread over the entire scanning range).
Leuze Teach Adapter PA1/XTSX-M12 can be used for this purpose.

Resetting to factory settings

1. When switching on the power supply (during Power-On), connect the Teach-IN input to GND for >5s.

2. Disconnect the Teach-IN input from GND. The green and yellow LEDs flash alternately and very quickly for a brief time.

The sensor was reset to the factory setting:
4 … 20mA or 0 … 10 V corresponds to an object distance of 40 … 300 mm or 80 … 1200 mm, respectively.

DMU318-300…-M12 - 01 2017/02
DMU318-1200…-M12 - 01