Leuze HTU318…W Data Sheet

10 - 30 V

DC

IP 67

IEC 60947...

IEC 60947...

HTU318…W 90° angled ultrasonic sensors with 2 switching outputs

Dimensioned drawing

en 01-2017/02 50135823

50 … 400mm

150 … 1600mm

 Function largely independent of surface

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

 Sound exit less than 90° to the longitudinal

axis

 Small dead zone at long scanning range
 Adjustment of the switching point can be

taught

 NO/NC function reversible
 2 independent switching outputs

(PNP or NPN)

 NEW – Both outputs can easily be taught

using a button

 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 …)

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

Electrical connection

We reserve the right to make changes • PAL_HTU318_400W_1600W_2SWO_en_50135823.fm

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone]

HTU318-400.W…-M12 - 01

HTU318-1600.W…-M12 - 01

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (plate 200x 200mm)

-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)

y1

y2

-300

-200

0

100

-100

200

300

0 400 800 16001200

Object distance x [mm]

Width y of the sound cone [mm]

Typ. response behavior (plate 200x 200mm)

y1

y2

-300

-200

0

100

-100

200

300

0 400 800 16001200

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)

HTU318…W

Technical data

Ultrasonic specifications HTU318-400.W3/…-M12 HTU318-1600.W3/…-M12

Scanning range
Adjustment range 50 … 400mm 150 … 1600mm
Ultrasonic frequency 300kHz 230kHz
Typ. opening angle 8° 8°
Resolution <2mm <2mm
Direction of beam 90° to longitudinal axis 90° to longitudinal axis
Reproducibility ± 0.5%
Switching hysteresis 1% 3) 1%
Temperature drift ≤ 5%

Timing

Switching frequency 10Hz 2Hz
Response time 500ms 500ms
Readiness delay ≤ 900ms ≤ 900ms

Electrical data

Operating voltage U
Residual ripple ± 7% of U
Open-circuit current ≤ 50mA
Switching output / Function …/4P… 2 independent PNP transistor switching outputs

Output current Max. 100 mA
Switching range adjustment 1-point teach: teach-in button 2 … 7s,

Changeover
NO/NC

Indicators

Yellow LED OUT1: object detected
Blue LED OUT2: object detected
Flashing yellow or blue LED Teach-in
Flashing green and yellow/blue LEDs Teaching error
Green LED Object within the scanning range

Mechanical data

Housing Plastic (PBT)
Active surface Epoxy resin, glass fiber reinforced
Weight 75g

Ultrasonic transducer Piezoceramic

Connection type M 12 connector, 5-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: 200mm x 200 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

50 … 400mm 2)

1) 3)

4)

150 … 1600mm 2)

±0.5% 1)

3)

≤ 5% 4)

10 … 30V DC (incl. ± 7% residual ripple)

B

3)

OUT 1 (pin 4): NO contact preset

…/2N… 2 independent NPN transistor switching outputs

OUT 2 (pin 5): NC contact preset

OUT 1 (pin 4): NO contact preset
OUT 2 (pin 5): NC contact preset

2-point teach: teach-in button 7 … 12s
Teach-in button > 12s

6)

7)

1, 2, 3

5) 8)

Diagrams

HTU318-400.W3/…-M12

100

50

0

-50

-100
0 100 200 300 400 500

HTU318-1600.W3/…-M12

y2

y1

HTU318-400.W…-M12 - 01 2017/02
HTU318-1600.W…-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.

HTU318…W 90° angled ultrasonic sensors with 2 switching outputs

Part number code

HTU318-1600 .W3 /4PK-M12

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

Series
318 318 series, cylindrical short M18 design

Scanning range in mm
400 50 … 400
1600 150 … 1600

Equipment
W Design with 90° angled head
3 Teach button on the sensor

Pin assignment of connector pin 4 / black cable wire (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

Pin assignment of connector pin 2 / white cable wire (Analog OUT/OUT2)
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 5 / gray cable wire (Sync / MUX)
K Synchronization/multiplex input

Connection technology
M12 M12 connector, 5-pin

Order guide

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

Designation Part no.

Scanning range / switching output / teach-in / design

50 … 400mm / 2 x PNP / teach button / with 90° angled head HTU318-400.W3/4PK-M12 50136098
50 … 400mm / 2 x NPN / teach button / with 90° angled head HTU318-400.W3/2NK-M12 50136099
150 … 1600mm / 2 x PNP / teach button / with 90° angled head HTU318-1600.W3/4PK-M12 50136104
150 … 1600mm / 2 x NPN / teach button / with 90° angled head HTU318-1600.W3/2NK-M12 50136105

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] HTU318-400.W…-M12 - 01

HTU318-1600.W…-M12 - 01

Dead zone

Sensor

OUT active
Yellow/blue LED ON
Green LED OFF

OUT not active
Yellow/blue LED OFF
Green LED ON

Distance

Hysteresis

Switching point

Scanning range

OUT not active

Yellow/blue LED OFF

Green LED OFF

OUT not active
Yellow/blue LED OFF
Green LED OFF

Dead zone

Sensor

OUT not active
Yellow/blue LED OFF
Green LED ON

OUT active
Yellow/blue LED ON
Green LED OFF

Distance

Hysteresis

Switching point

Scanning range

OUT active

Yellow/blue LED ON

Green LED OFF

OUT active
Yellow/blue LED ON
Green LED OFF

Dead zone

Sensor

OUT

active

Yellow/blue LED

ON

Green LED

OFF

OUT

not active

Yellow/blue LED

OFF

Green LED

ON

Distance

Hysteresis

Scanning range

OUT not active

Yellow/blue LED OFF

Green LED OFF

OUT not active
Yellow/blue LED OFF
Green LED OFF

Hysteresis

OUT

not active

Yellow/blue LED

OFF

Green LED

ON

Switching point 1 Switching

point 2

Dead zone

Sensor

OUT

active

Yellow/blue LED

ON

Green LED

OFF

OUT

not active

Yellow/blue LED

OFF

Green LED

ON

Distance

Hysteresis

Scanning range

OUT active

Yellow/blue LED ON

Green LED OFF

OUT active
Yellow/blue LED ON
Green LED OFF

Hysteresis

Switching point 1 Switching

point 2

OUT

active

Yellow/blue LED

ON

Green LED

OFF

HTU318…W

Device functions and indicators

All settings on the sensor are taught-in via the teach button. Device status and switching states are indicated as follows by means of
3 LEDs:

Switching behavior

1-point teach (1 switching point per output)

Switching behavior NO contact Switching behavior NC contact

2-point window-teach (2 switching points per output)

Switching behavior NO contact Switching behavior NC contact

Note!

The switching behavior is not defined in the dead zone.

Switching behavior with 2-point window-teach as a function of the switching function

Switching function

configured as

First taught object

distance

Second taught object

distance

Output switching behavior

Close Far

NO (normally open)

Far Close

Close Far

NC (normally closed)

Far Close

HTU318-400.W…-M12 - 01 2017/02
HTU318-1600.W…-M12 - 01

HTU318…W 90° angled ultrasonic sensors with 2 switching outputs

Adjusting the switching points via the teach button

The switching points of the sensor for both outputs are set to 400 mm or 1600mm (static 1-point teach) on delivery.

By means of a simple operating procedure, the switching points for each output can be individually taught to an arbitrary distance within
the scanning range with 1-point teach (static) or 2-point window-teach (static).

Moreover, the output function can be switched from NO contact (NO - normally open) to NC contact (NC - normally closed). An LED is
permanently assigned to each output for the setting.

Selecting the output that is to be taught: OUT1 or OUT2

1.Press the teach button for ≥2s to activate teach mode. The yellow LED (OUT 1) flashes at 1Hz.
While in this state, output OUT 1 can be taught.

2.To teach output OUT 2, briefly press the teach button again. The blue LED (OUT 2) now flashes at 1Hz.
While in this state, output OUT 2 can be taught.

3.Briefly press the teach button again to toggle between outputs OUT 1 and OUT 2 in this state. The flashing LED indicates which

output is ready for teaching:

yellow LED flashing = OUT 1 ready for teaching,
blue LED flashing = OUT 2 ready for teaching.

Teaching output OUT 1 or OUT 2

First activate the previously described teach mode for output OUT 1 or OUT 2.

1-point teach (static) 2-point window-teach (static)

1. Place object at desired switching distance. 1. First, place object at desired switching distance for switching point 1.

2. To adjust the selected output, press the teach button for 2…7s until

the yellow LED (OUT 1) or blue LED (OUT 2) flashes at 3Hz.
The current state of the selected output is frozen during the adjustment
process.

3. Release the button.
The current object distance has been taught as the new switching point.

4. Error-free teach: LED states and switching behavior according to the
diagram shown above.
Faulty teach (object may be too close or too far away – please note scan­ning range):
green and yellow (blue) LEDs flash at 8Hz until an error-free teach
event is performed.
The selected output is inactive as long as there is a teaching error.

1) See table "Switching behavior with 2-point window-teach as a function of the switching function"

2. To adjust the selected output, press the teach button for 7 … 12s until
the yellow (blue) and green LEDs flash alternately at 3Hz.

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

4. Then, place the object at the desired switching distance for switching
point 2.

Note:The minimum distance between the switching points is a s fo llo ws:

5. Briefly press the teach button again to complete the teach event.

The switching window for the selected output was taught in.

6. Error-free teach: LED states and switching behavior according to the
diagram shown above.
Faulty teach (object may be too close or too far away – please note scan­ning range):
green and yellow (blue) LEDs flash at 8Hz until an error-free teach
event is performed.

scanning range of 400 mm:40mm
scanning range of 1600mm:160mm

1)

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] HTU318-400.W…-M12 - 01

HTU318-1600.W…-M12 - 01

HTU318…W

Adjusting the switching function (NC/NO) via the teach button

The switching function of the sensor is preset as follows on delivery:

 OUT 1: NO contact
 OUT 2: NC contact

The output function for each output can be individually switched from NO contact (NO - normally open) to NC contact (NC - normally
closed) and vice versa. If the switching function is changed, the switching output is changed to the opposite state (toggled).

First activate the previously described teach mode for output OUT 1 or OUT 2.

Changeover of the switching function

1. To change the switching function of the selected output, press the teach button for longer than 12s.

The current state of the selected output is frozen during the adjustment process.

2. The green and yellow (blue) LEDs flash alternately at 3Hz.
If the yellow (blue) LED is ON afterwards, the selected output operates as an NO contact.
If the yellow (blue) LED is OFF afterwards, the selected output operates as an NC contact.

HTU318-400.W…-M12 - 01 2017/02
HTU318-1600.W…-M12 - 01

Sensor 2 Sensor 1Sensor n

NOTE

Please make certain that the wiring is performed according to the connection diagram.
Sync/MUX pin 5 on all sensors in the network must be connected to one another. Generation
of the synchronization signal for all sensors in the network occurs automatically.

HTU318…W 90° angled ultrasonic sensors with 2 switching outputs

Synchronization of multiple HTU318 ultrasonic sensors

If adjacent ultrasonic sensors receive the signals of other sensors, so-called crosstalk occurs, which leads to faulty measurement results.
Through temporal synchronization of the adjacent sensors, this can be avoided. Via the Sync/MUX input, the HTU318 ultrasonic sensors
can be synchronized in 2 different ways:

Synchronous operation

In this operating mode the mutual interference of adjacent sensors can be avoided. For this purpose, up to 6 sensors of the same type
are wired together in a network according to the following diagram.

The devices work in synchronous operation with a simultaneous transmission pulse. The response time of the individual sensors in
the network corresponds approximately to that of a single sensor. However, an additional delay time of approx. 20 ms occurs in
comparison to the specified response time in standard operation.

Synchronous operation wiring schematic

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] HTU318-400.W…-M12 - 01

HTU318-1600.W…-M12 - 01

Sensor 2 Sensor 1Sensor n

GND

NOTE

Please make certain that the wiring is performed according to the connection diagram.

Sync/MUX pin 5 on all sensors in the network must be connected to one another.
To activate multiplex operation, the Sync/MUX cable must be connected to GND for 5 s
when applying the operating voltage.

Generation of the multiplex signal for all sensors in the network occurs automatically.

Activating multiplex operation:

to GND for 5s during power-on.

HTU318…W

Multiplex operation

In this operating mode the mutual interference of adjacent sensors can be reliably avoided. For this purpose, up to 4 sensors of the same
type are wired together in a network according to the following diagram.

The devices operate in multiplex operation with a cyclically time-delayed transmission pulse and are switched to a passive state out­side of the active phase, whereby the states of the outputs are frozen until the next active phase. The response time of the individual
sensor in the network is therefore extended with respect to the response time of a single sensor as follows:

Response time in the network = (Response time of sensor * n) + 25ms (n = number of sensors in the network)

Multiplex operation wiring schematic

Resetting to factory settings

The sensor can be reset to the factory setting (1 switching point each at 400 mm or 1600 mm).

Resetting to factory settings

1. When switching on the supply voltage (during power-on), press the teach button for >5s.

2. Release the button. The green, yellow and blue LEDs flash alternately and very quickly for a brief time.

The sensor was reset to the factory setting:

switching output OUT 1: NO contact, 1 switching point at 400 mm or 1600 mm (static 1-point teach),
switching output OUT 2: NC contact, 1 switching point at 400 mm or 1600 mm (static 1-point teach).

HTU318-400.W…-M12 - 01 2017/02
HTU318-1600.W…-M12 - 01