Waycon UFA2 Series User manual

INSTALLATION GUIDE
Ultrasonic Sensor Series UFA2
For further information please see the data sheet at www.waycon.biz/products/ultrasonic-sensors/
FIRST STEPS
WayCon Positionsmesstechnik GmbH would like to thank you for the trust you have placed in us and
our products. This manual will make you familiar with the installation and operation of our ultrasonic
sensors. Please read this manual carefully before initial operation!
Unpacking and checking:
Carefully lift the device out of the box by grabbing the housing. After unpacking the device, check
it for any visible damage as a result of rough handling during the shipment. Check the delivery for
completeness. If necessary consult the transportation company, or contact WayCon directly.
MOUNTING NOTICES
• The sensor can be mounted with the two M12 nuts (UFA2-200), M18 nuts (UFA2-1500) or M30 nuts
(UFA2-6000) which are included in the delivery.
• The sensor has to be protected against mechanical loads for example shocks and impacts.
• The sensor can be mounted in any position, however a vibration-free or vibration-dampening
assembly must be observed.
• The transducer surface as well as the eld of the detection beam must be kept free mandatorily. You
need to pay attention on having no disturbing objects between the sensor and the target object
within the detection beam. Otherwise the sensor will detect the disturbing object instead of the
target object required.
• The object reects a part of the ultrasonic in the
diuse mode - this reected sound will be evaluated
by the sensor. Objects with a smooth surface are
reliably detected up to a tilting angle of approx. 10°.
With the UFA2-1500 (respectively UFA2-6000) the
permissible angle of inclination is approx. 5° with
a scanning range of 150 mm (respectively 600 mm)
and approx. 2° with a scanning range of 1500 mm
(respectively 6000 mm). The max. allowed tilting
angle increases on objects with a rough or heavy
structured (granular) surface.
<2°<5°
150 1500
600 6000
UFA2-1500
UFA2-6000

DETECTION BEAMS
UFA2-200
blind range
target: plate
100 x 100 mm
target: round bar
Ø 10 mm
0 20 40 60 80 100 120 140 160 180 200 220
0
2
4
-10
6
8
10
-8
-6
-4
-2
UFA2-FB-150: Focus beam Version
0 20 40 60 10080 120 140 160
0
4
8
12
-4
-8
-12
16
-16
target: plate 20 x 20 mm
target: round bar
Ø 10 mm
UFA2-1500
150
100
80
60
40
20
0
-150
-100
-80
-60
-40
-20
blind range
target: plate
200 x 200 mm
target: round bar
Ø 25 mm
0 200 400 600 800 1000 1200 1400 1600
UFA2-6000
blind range
target: plate
200 x 200 mm
target: round bar
Ø 20 mm
600
400
200
0
-200
-400
-600
0 800 1600 2400 3200 4000 4800 5600 6400

ELECTRICAL CONNECTION
Pin Analog output Switching output Connection cable K4P
1 +V +V BR
2 Analog output Teach WS
3 GND GND BL
4 Teach Switching output SW
12
34
connector M12
(male) +
T
–
Pin 1
Pin 2
Pin 3
Pin 4 Teach
circuit diagram analog output
Pin 1
Pin 2
Pin 3
Pin 4
+
T
–
npn
pnp
Teach
circuit diagram switching output
TEACHING FUNCTION ANALOG OUTPUT
Teaching the measurement range:
The measuring range is dened by two teach points. The output signal is scaled to the taught
measuring range.
Procedure:
1. Place the target on the position of the 1st teach point (i.e. where 0 V or 4 mA should be output).
2. Connect the teaching line (Pin 4) with +V (Pin 1) for 0.1...2 s. LED ashes slowly (1 Hz).
3. Within <20 s, place the target on the position for the 2nd teach point (i.e. where 10 V or 20 mA
should be output) and connect the teaching line with +V for 0.1...2 s.
4. LED ashes 2 times: teach procedure successful
LED ashes 4 times: teach procedure not successful
Changing the analog output signal:
The physical quantity (current/voltage) of the analog output is changed.
Procedure:
1. Connect the teaching line (Pin 4) with +V (Pin 1) for >6 s.
2. LED ashes 2 times: change successful
LED ashes 4 times: change not successful

TEACHING FUNCTION SWITCHING OUTPUT
Teaching the window size:
The window size is dened by two switching limits.
Procedure:
1. Place the target on the position of near switching point.
2. Connect the teaching line (Pin 2) with +V (Pin 1) for 0.1...2 s. LED ashes slowly (1 Hz).
3. Within <20 s, place the target on the position of the far switching point and connect the teaching
line with +V for 0.1...2 s.
4. LED ashes 2 times: teach procedure successful
LED ashes 4 times: teach procedure not successful
2-step teaching:
Both conditions (background and object) can be taught successively. The switching point is placed
between the object and the background.
Procedure:
1. Place the target on the position of near switching point.
2. Connect the teaching line (Pin 2) with +V (Pin 1) for 2...4 s. LED ashes slowly (1 Hz).
3. Within <20 s, remove the target and connect the teaching line with +V for 2...4 s.
4. LED ashes 2 times: teach procedure successful
LED ashes 4 times: teach procedure not successful
Autoteach procedure:
Opens a teach window for 4...8 s and automatically teaches passing objects. The switching point is
placed between the object and the background.
Procedure:
1. Connect the teaching line (Pin 2) with +V (Pin 1) for 4...6 s. LED ashes fast (2 Hz).
2. Within the next 4...8 s, the autoteach procedure detects passing objects.
3. LED ashes 2 times: teach procedure successful
LED ashes 4 times: teach procedure not successful
Changing the switching function:
Changes between NO <=> NC. Causes a inversion of the switching output function (signal inversion on
objects within / outside the window).
Procedure:
1. Connect the teaching line (Pin 2) with +V (Pin 1) for >6 s.
2. LED ashes 2 times: change successful
LED ashes 4 times: change not successful

INFLUENCES ON THE MEASUREMENT
Environmental inuences:
Ultrasonic sensors are made for the use in atmospheric air. Environmental Inuences like rain, snow,
dust or smoke have no inuence on the accuracy of the measurement. However, measurements under
pressure (higher that the atmospheric pressure) are not possible with ultrasound sensors.
Strong wind or air turbulences may lead to instability in measurement values. A ow speed up to a few
m/s is unproblematic and will have no inuence on the sensor’s accuracy.
Target Inuences:
• Liquids are excellently detectable with ultrasound. A classic application for ultrasonic sensors is level
measurement. The sound beam axis however must have a maximum deviation of 3° vertically to the
liquid level (no strong waves), otherwise the reected sound will miss the sensor.
• Hot Targets with high temperatures cause a thermal convection in the surrounding air. For this
reason the sound beam may be strongly diverted vertically to its axis, so that the echo is weakened,
or can no longer be received at all.
• For convex (cylindrical and spherical) surfaces every area element has a dierent angle to the
sound cone’s axis. The reected cone thus diverges and the portion of the sound energy reected
to the receiver is reduced correspondingly. The maximum range decreases with the decreasing size
of the cylinder (ball).
• The roughness and surface structures of the object to be detected also determine the scanning
capacities of the ultrasonic sensors. Surface structures that are larger than the ultrasound
wavelength, as well as coarse-grained bulk materials, reect ultrasound in a scattered manner, and
are not detected optimally by the sensor under these conditions.
• Hard material reects almost all of the impulse energy from ultrasound applications in a way that
makes them very easy to detect with ultrasound.
• Soft material, on the other hand, absorbs almost all of the impulse energy. It is thus harder to detect
with ultrasound. These materials include felt, cotton, coarse meshes, foam, etc.
• Thin-walled foils behave like soft materials. To be able to use ultrasound, the foil thickness should
be at least 0.01 mm.

SAFETY NOTICES
• These products are neither allowed to be used as safety- or emergency shut-o devices, nor in other
applications, where a malfunction of this product may result in personal injury.
• Failure to follow this notice may result in serious or fatal injury.
DECLARATION OF CONFORMITY
Based on: EN 60947-5-2 + amendments (proximity switches)
EN 60947-5-7 + amendments (proximity sensors with analogue output)
This is to certify that the following products correspond to the mentioned specications.
Classication Ultrasonic Sensors
Series UFA2
Test on immunity IEC 61000-6-2 (Industry)
Type of test applied harmonized standards:
EN 61000-4-2, EN 61000-4-3, EN 61000-4-4
The declaration of conformity loses its validity if the product is misused or modied without proper
authorisation.
Taufkirchen, 21.12.2021 Andreas Täger
CEO