Sensor adjustment with Teach-in procedure
Set detect point
Place object at position
Press push-button for about
3 s until LEDs flash
simultaneously
both LEDs:
flash
mutually
Press push-button for
about 1 s
Set window mode
Place object at position
Press push-button for about
3 s until LEDs flash
simultaneously
both LEDs:
Place object at position
Press push-button for
about 1 s
flash
mutually
Set two way reflective
barrier
Set NOC/NCC
Enable/disable Teach-in
push-button
Switch off power supply
Place reflector at position
Press push-button for about
3 s until LEDs flash
simultaneously
Press button for about 13 s
until LEDs flash
mutually
both LEDs:
flash
mutually
Press push-button for
about 10 s
green LED:
yellow LED:
To change output characte-
ristic press push-button
for about 1 s
While pressing the push-
button switch on power
supply
Keep push-button pressed
for about 3 s until both
LEDs flash simultaneously
flashes
on:
NOC
off:
NCC
green LED:
yellow LED:
flashes
on:
push-button
enabled
off:
push-button
disabled
To enable/disable Teach-in
press push-button
for about 1 s
Reset to factory setting
Switch off power supply
While pressing the push-
button switch on power
supply
Keep push-button pressed
for about 13 s until both
LEDs stop flashing
Normal operating mode
Wait for 10 s
Wait for 10 s
Normal operating mode
Operating Instructions
zws-7/CD/QS
zws-7/CE/QS
zws-15/CD/5ms.a
zws-15/CE/5ms.a
Fast ultrasonic proximity switch
with one switched 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.
Ultrasonic Sensors
The switched output is set in depen-
dence of the adjusted detect dis-
tance.
Due to the short response time and
the high switching frequency these
zws sensors are applicable to the de-
tection of quick processes. For the
zws-7, the faster variant, please see
the notes for installation and operati-
on.
Via the push-button, the detect dis-
tance and operating mode can be
adjusted (teach-in). Two LEDs indi-
cate operation and the state of the
switched 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 accor-
dance with the EU Machine Direc-
tive.
Installation
Mount the sensor at the installa-
tion site with the aid of the
enclosed mounting plate.
Maximum torque of attachment
screw: 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.
Start-Up
Connect the power supply.
Carry out the adjustment in
accordance with the diagram.
Fig. 2: Pin assignment with view onto sensor
plug and colour coding of the
microsonic connection cable
Factory Setting
Operation with one detect point
Switched output on NOC
Detect points at operating range
1
3
colour
+U
B
-U
B
brown
blue
4
2
D
Sync
black
white
1
4
3
2
Operating modes
Three operating modes are available
for the switched output:
Operation with one detect point
The switched output is set if the ob-
ject falls below the set detect point.
Window mode
The switched output is set if the ob-
ject is within the set window mar-
gins.
Two-way reflective barrier
The switched output is set if the ob-
ject is between sensor and reflector.
Synchronization
You can synchronize as many sensors
as you like.
Apply a square-wave signal to the
sync-input with pulse width t
i
and
repetition rate t
p
(Fig.3 and
technical data).
Fig.3: External synchronization signal
A high level on the sync-input will
deactivate the sensor.
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
operating mode:
1 x flashing = operation with one
switching point
2 x flashing = window mode
3 x flashing = reflective barrier
After a break of 3 s the green LED
shows the
output function:
1 x flashing = NOC
2 x flashing = NCC
Maintenance
microsonic sensors are maintenance-
free. 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 measure-
ments are not possible.
In the normal operating mode, an il-
luminated yellow LED signals the
switched output is switched
through.
The sensor got to know the
distance to the object at the teach-
in stage. For objects that move into
the sound field from the side, an 8-
10 % greater distance should be
set for reliable object detection by
the sensor.
Fig. 4: Setting the switching point
The zws-7 has a very short measu-
rement cycle time of only 2 ms.
Under unfavourable conditions
this can lead to the sensor wrongly
Sensor disabled
Sensor disabled
Start
+U
B
-U
B
t
i
t
p
Further settings
Set switched output
