Operating Instructions
Sensor adjustment with Teach-in procedure
Place object at position
Press push-button for about
3 s until LEDs flash
simultaneously
Place object at position ¡
Press push-button for
about 1 s
Set rising/falling output
characteristic curve
Press push-button for about
13 s until LEDs flash
mutually
To change output
characteristic press
push-button for about 1 s
flashes
on: rising,
off: falling
characteristic curve
Enable/disable Teach-in push-
button
While pressing the push-but-
ton switch on power supply
Keep push-button pressed for
about 3 s until both LEDs
flash simultaneously
While pressing the push-but-
ton switch on power supply
Keep push-button pressed for
about 13 s until both LEDs
stop
flashing
flashes
on: push-button enabled
off: push-button disabled
To enable/disable Teach-in
press push-button
for about 1 s
brown
blue
4
2
I | U
Sync
black
white
Sensor disabled Sensor disabled
Start
+U
B
-U
B
ti
tp
zws-15/CI/QS zws-15/CU/QS
zws-24/CI/QS zws-24/CU/QS
zws-70/CI/QS zws-70/CU/QS
Ultrasonic proximity switch with
analogue output
Product Description
The zws sensor offers a non-contact
measurement of the distance to an
object which must be positioned
within the sensor’s detection zone. In
dependence of the set window limits, a distance-proportional analogue
signal is output.
Via the push-button, the window
limits of the analogue output and its
characteristic can be adjusted (teachin). Two LEDs indicate operation and
the state of the analogue output.
Safety Notes
Read the operating instructions
prior to start-up.
Connection, installation and
adjustment works may only be
carried out by expert personnel.
No safety component in
accordance with the EU Machine
Directive
Proper use
zws ultrasonic sensors are used for
non-contact detection of objects.
Installation
Mount the sensor at the installa-
tion site with the aid of the
enclosed mounting plate
Maximum torque: 0,5 Nm
Fig. 1: Attachment with mounting plate
Connect a connection cable to the
M8 device plug.
Avoid mechanical load on the con-
nector.
Fig. 2: Pin assignment with view onto sensor
plug and colour coding of the
microsonic connection cable
Start-Up
Connect the power supply.
Carry out the adjustment in
accordance with the diagram.
Factory Setting
Rising analogue characteristic
curve between the blind zone and
the operating range
Synchronization
You can synchronize as many sensors
as you like.
Apply a square-wave signal to the
sync-input with pulse width ti and
repetition rate tp (Fig.3 and
technical data).
A high level on the sync-input will
deactivate the sensor.
Fig.3: External synchronization signal
Checking operation mode
In normal mode shortly press the
push-button.
The green LED stops shining for one
second, then it will show the current
characteristic of the analogue output:
1 x flashing = rising
2 x flashing = falling
Maintenance
microsonic sensors are maintenancefree. In case of excess caked-on dirt
we recommend cleaning the white
sensor surface
Notes
The zws sensor has a blind zone,
within which distance measurements are not possible.
The zws sensor is equipped with
an internal temperature compensation. Due to the sensor’s selfheating, the temperature compensation reaches its optimum
working point after approx. 30
minutes of operation.
In the normal operating mode, an il-
luminated yellow LED signals the object is within the adjusted window
limits.
If the push-button is not pressed
for 30 seconds during the teach-in
setting, the settings made hitherto
are deleted.
The sensor can be reset to its fac-
tory setting.
89/336/EEC
Resolution, sampling rate
Detection zones
for different objects:
The dark grey areas are determined
with a thin round bar (10 mm dia.)
and indicate the typical operating range
of a sensor. In order to obtain the light grey
areas, a plate (100 x 100 mm) is introduced
into the beam spread from the side.
In doing so, the optimum angle between
plate and sensor is always employed.
This therefore indicates the maximum
detection zone of the sensor.
It is not possible to evaluate ultrasonic
reflections outside this area.
No-load current consumption
Temperature drift internal compensated, ≤ 2 %
20 – 30 V DC, reverse polarity protection
Temperature drift internal compensated, ≤ 2 %
20 – 30 V DC, reverse polarity protection
Class of protection to EN 60 529
ultrasonic transducer: polyurethane foam,
ultrasonic transducer: polyurethane foam,
epoxy resin with glass content
epoxy resin with glass content
Yes, Teach-in push-button
Yes, Teach-in push-button
LED yellow (state of output)
LED yellow (state of output)
Pulse width synchroniszation signal t
i
Repetition rate synchronization signal t
p
Time delay before availability
Analogue output 4 - 20 mA
rising/falling characteristic
rising/falling characteristic
RL ≥ 100 kΩ , short-circuit-proof,
rising/falling characteristic
RL ≥ 100 kΩ , short-circuit-proof,
rising/falling characteristic
Temperature drift internal compensated, ≤ 2 %
20 – 30 V DC, reverse polarity protection
ultrasonic transducer: polyurethane foam,
epoxy resin with glass content
Yes, Teach-in push-button
LED yellow (state of output)
rising/falling characteristic
RL ≥ 100 kΩ , short-circuit-proof,
rising/falling characteristic
1 analogue output
1
2
4
3
+U
B
-U
B
Sync
U
R
L
I | U
8 cm 4 cm 0 cm 4 cm 8 cm
0 cm
4 cm
8 cm
12 cm
16 cm
20 cm
24 cm
Round bar ø 10 mm
Plate
10 cm 5 cm 0 cm 5 cm 10 cm
0 cm
5 cm
10 cm
15 cm
20 cm
25 cm
30 cm
35 cm
40 cm
Plate
Round bar ø 10 mm
40 cm 20 cm 0 cm 20 cm 40 cm
0 cm
20 cm
40 cm
60 cm
80 cm
100 cm
Round bar ø 10 mm
Plate
microsonic GmbH • Hauert 16 • D-44227 Dortmund • Tel: +49 2 31 / 97 51 51-0 • Fax: +49 2 31 / 97 51 51-51 • E-Mail: info@microsonic.de • www.microsonic.de
The content of this document is subject to technical changes. Specifications in this document are presented in a descriptive way only. They do not warrant any product features.