Microsonic zws-15/CI/QS - Manual

Operating Instructions
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
Ultrasonic Sensors
dependence of the set window lim-
its, a distance-proportional analogue
signal is output.
Via the push-button, the window
limits of the analogue output and its
characteristic can be adjusted (teach-
in). 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.
Sensor adjustment with Teach-in procedure
Set window
margins
Place object at position 
Press push-button for about
3 s until LEDs flash
simultaneously
both LEDs:
Place object at position ¡
flash
mutually
Press push-button for
about 1 s
Set rising/falling output
characteristic curve
Press push-button for about
13 s until LEDs flash
mutually
green LED:
yellow LED:
To change output
characteristic press
push-button for about 1 s
flashes
on: rising,
off: falling
characteristic curve
Enable/disable Teach-in push-
button
Switch off power supply
Reset to factory setting
Switch off power supply
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
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
Normal operating mode
Wait for 10 s Wait for 10 s
Normal operating mode
1 2
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
1
3
colour
+U B
-U B
brown
blue
4
2 I | U
Sync
black
white
1
4
3
2
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).
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
Sensor disabled Sensor disabled
Start
+U B
-U B
t i t p
second, then it will show the current
characteristic of the analogue out-
put:
1 x flashing = rising
2 x flashing = falling
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.
 The zws sensor is equipped with
an internal temperature compen-
sation. Due to the sensor’s self-
heating, the temperature compen-
sation reaches its optimum
working point after approx. 30
minutes of operation.
 In the normal operating mode, an il-
luminated yellow LED signals the ob-
ject 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.
Set analogue output Further settings
89/336/EEC