DMU330Ultrasonic sensors with analog and switching output
Dimensioned drawing
en 01-2017/02 50135826
250 … 3500mm
350 … 6000mm
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
1 switching output (PNP or NPN)
NO/NC function reversible
NEW – Both outputs can easily be taught
using a button
NEW – Stable plastic design
NEW – Temperature-compensated
Output currentMax. 100 mA
Switching range adjustment1-point teach: teach-in button 2 … 7s,
Changeover NO/NCTeach-in button > 12s
Indicators
Yellow LED OUT1: object detected
Blue LED Analog OUT: object detected
Yellow/green or blue/green LED flashing Teach-in / teaching error
Green LEDObject within the scanning range
Mechanical data
Housing Plastic (PBT)
Active surfaceEpoxy resin, glass fiber reinforced
Weight 140g / 170 g
Ultrasonic transducerPiezoceramic
Connection type M12 connector, 5-pin
Fitting positionAny
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)
Device functions and indicators – switching output
The sensor has a button for setting switching output OUT1 and analog output Analog OUT. Use the teach button to perform the
1-point teach, the 2-point window-teach and to changeover the switching function (NO contact/NC contact). Device status and switching
states for OUT1 are indicated as follows by means of a yellow LED:
Switching output OUT1
1-point teach (1 switching point)
Switching behavior NO contactSwitching behavior NC contact
2-point window-teach (2 switching points)
Switching behavior NO contactSwitching 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
DMU330Ultrasonic sensors with analog and switching output
Adjusting the switching points via the teach button
The switching point of the sensor is set to 3500 mm or 6000mm (static 1-point teach) on delivery.
By means of a simple operating procedure, the switching point for the output OUT1 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).
Selecting the output that is to be taught: OUT1 or Analog OUT
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 Analog OUT, briefly press the teach button again. The blue LED (Analog OUT) now flashes at 1Hz. While in this state, output Analog OUT can be taught.
3.Briefly press the teach button again to toggle between outputs OUT 1 and Analog OUT in this state. The flashing LED indicates
which output is ready for teaching:
yellow LED flashing = OUT 1 ready for teaching,
blue LED flashing = Analog OUT ready for teaching.
Teaching output OUT 1
First activate the previously described teach mode for output OUT 1.
1. Place object at desired switching distance.1. First, place object at desired switching distance for switching point 1.
2. To adjust the output OUT1, press the teach button for 2…7s until the
yellow LED flashes at 3Hz.
3. Release the teach button to complete the teach event.
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 LEDs flash at 8Hz until an error-free teach event is
performed.
The affected 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 output OUT1, press the teach button for 7…12s until the
yellow 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 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 LEDs flash at 8Hz until an error-free teach event is
performed.
scanning range of 3500mm:350mm
scanning range of 6000mm:600mm
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
The output function can be 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.
Changeover of the switching function
1. To change the switching function of output OUT 1, press the teach button for longer than 12s. The current state of output OUT 1 is frozen during the adjustment process.
2. The green and yellow LEDs flash alternately at 3Hz.
If the yellow LED is ON afterwards, output OUT 1 functions as a normally open contact (NO).
If the yellow LED is OFF afterwards, output OUT 1 functions as a normally closed contact (NC).
When setting the analog output (teach) via the teach button, 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.
Adjusting the analog output via the teach button
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 250 … 3500mm or 350 … 6000mm, 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.
Selecting the output that is to be taught: OUT1 or Analog OUT
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 Analog OUT, briefly press the teach button again. The blue LED (Analog OUT) now flashes at 1Hz. While in this state, output Analog OUT can be taught.
3.Briefly press the teach button again to toggle between outputs OUT 1 and Analog OUT in this state. The flashing LED indicates
which output is ready for teaching:
yellow LED flashing = OUT 1 ready for teaching,
blue LED flashing = Analog OUT ready for teaching.
First activate the previously described teach mode for output Analog OUT.
By selecting an object distance within the scanning range, the characteristic curve of the analog output can be adjusted.
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, press the teach button for 2…7s
until the blue and green LEDs flash simultaneously at 3Hz.
3. Release the button. The characteristic curve with plot rising from the start of the range (50 mm or 150 mm) to the set object distance was taught in.
4. Error-free teach: LED states acc. to "Technical data" -> "Indicators".
Faulty teach: green and blue LEDs flash at 8Hz until an error-free teach is performed.
2-point teach of the analog output
First activate the previously described teach mode for output Analog OUT.
By selecting 2 object distances within the scanning range, the characteristic curve of the analog output can be adjusted.
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".
scanning range of 3500mm:600 mm
scanning range of 6000mm:950 mm
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, press the teach button for 7 … 12s until the 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 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. Briefly press the teach button again to complete the teach event.
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 blue LEDs flash at 8Hz until an error-free teach is performed.
for a scanning range of 3500mm is:350mm
for a scanning range of 6000mm is:600mm
Inverting the analog output (falling/rising characteristic curve)
First activate the previously described teach mode for output Analog OUT.
The characteristic curve of the analog output can be inverted, e.g., if a falling characteristic output curve is desired.
Inverting the characteristic curve
1. To invert the characteristic curve of the analog output Analog OUT, press the teach button for >12s until the blue and green LEDs flash alternately.
2. Release the button. The characteristic curve plot was inverted.The blue LED indicates the current setting of the analog output:
ON= rising characteristic curve
OFF = falling characteristic curve
Please make certain that the wiring is performed according to the connection diagram.
The Sync/MUX pin 5 on all sensors in the network must be connected to one output of the
control. Generation of the synchronization signal for all sensors in the network occurs via the
control.
DMU330Ultrasonic sensors with analog and switching output
Synchronization of multiple DMU330 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 DMU330 ultrasonic
sensors can be synchronized in 2 different ways:
Synchronous operation
In this operating mode the mutual interference of adjacent sensors can be avoided; a minimum mounting distance between the sensors
is to be maintained, however:
Working distanceMinimum mounting distance
< 1,500mm100mm
≥ 1500mm50 mm
Sensors of the same type are wired together in a network according to the following diagram. A synchronization pulse from the control
activates synchronous operation.
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.
Please make certain that the wiring is performed according to the connection diagram.
The Sync/MUX pin 5 of each sensor must be connected with a
separate output of the control.
The control generates the time-delayed multiplex signals for all
sensors.
+5VDC
MUX pulse from the control
Time-delayed
+5VDC MUX pulse from the
control
Time-delayed
+5VDC MUX pulse from the
control
Scanning rangeResponse time of the switching/analog output t
resp
250 … 3500mm250ms
350 … 6000mm500ms
DMU330
Multiplex operation
In this operating mode the mutual interference of adjacent sensors can be reliably avoided. For this purpose, each sensor is wired with
a separate output of the control.
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.
Multiplex operation wiring schematic
Timing diagram for multiplex operation
t
Sensor 1
Sensor 2
Sensor 3
Resetting to factory settings
The sensor can be reset to the factory setting (1 switching point at 3500mm or 6000 mm, rising characteristic curve with spread over the
entire scanning range).
resp
t
resp
t
resp
t
resp
t
resp
t
resp
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: 1 switching point at 3500mm or 6000 mm (1-point teach, static),
analog output: 4 … 20mA or 0 … 10 V corresponds to an object distance of 250 … 3500 mm or 350 … 6000 mm, respectively.