microsonic nano Series Ultrasonic Proximity Switch with One Switching Output Instruction Manual

: June 9, 2024
: microsonic

Table of Contents

Product Description
Technical data
References
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microsonic nano Series Ultrasonic Proximity Switch with One Switching Output

Operation Manual

Ultrasonic proximity switch with one switching output

nano-15/CD nano-15/CE
nano-24/CD nano-24/CE

Product Description

nano sensors offer a non-contact measurement of the distance to an object which must be positioned within the sensor’s detection zone. The switching output is set conditional upon the adjusted switching distance. Via the Teach- in procedure, the switching distance and operating mode can be adjusted.

Safety Notes

Read the operation manual prior to start-up.
Connection, installation and adjustment works should be carried out by expert personnel only.
No safety component in accordance with the EU Machine Directive, use in the area of personal and machine protection not permitted

Proper Use

nano ultrasonic sensors are used for non-contact detection of objects.

Installation

Mount the sensor at the installation site.
Connect a connection cable to the
M12 device plug, see Fig. 1.

Start-up

Connect the power supply.
Set the parameters of the sensor by using the Teach-in procedure, see Diagram 1.
When operating several sensors, ensure that the mounting distances specified in Fig. 2 are not undercut

|

| colour
---|---|---
colour| +UB| brown
3| – UB| blue
4| D/E| black
2| Teach-in| white

Fig. 1: Pin assignment with view onto sensor plug and colour coding of the microsonic connection cables

Factory Settings

nano sensors are delivered factory made with the following settings:

Switching point operation
Switching output on NOC
Switching distance at operating range.

Operating Modes

Three operating modes are available for the switching output:

Operation with one switching point
The switching output is set when the object falls below the set switching point.
Window mode
The switching output is set when the object is within the set window limits.
Two-way reflective barrier
The switching output is set when no object is between sensor and fixed reflector.

| |
---|---|---
nano-15…| ≥0.25 m| ≥1.30 m
nano-24…| ≥0.25 m| ≥1.40 m

Fig. 2: Minimal assembly distances

Diagram 1: Set sensor parameters via the Teach-in procedure

Set sensor parameters via the Teach-in procedure

Checking Sensor Settings

In normal operating mode shortly connect Teach-in to +UB. Both LEDs stop shining for one second. The green LED indicates the current operating mode:
1x flashing = operation with one switching point
2x flashing = window mode
3x flashing = two-way reflective barrier

After a break of 3 s the green LED shows the output function:

1x flashing = NOC
2x flashing = NCC

Maintenance

microsonic sensors are maintenance free. In case of excess caked-on dirt we recommend cleaning the white sensor surface.

Notes

Every time the power supply is switched on, the sensor detects its actual operating temperature and transmits it to the internal temperature compensation. The adjusted value is taken over after 45 seconds.
If the sensor was switched off for at least 30 minutes and after power on the switching output is not set for 30 minutes a new adjustment of the internal temperature compensation to the actual mounting conditions takes place.
The sensors of the nano family have a blind zone. Within this zone a distance measurement is not possible.
In the normal operating mode, an illuminated yellow LED signals that the switching output is switched through.
In the »Two-way reflective barrier« operating mode, the object has to be within the range of 0-92 % of the set distance.
In the »Set switching point – me – thod A« Teach-in procedure the actual distance to the object is taught to the sensor as the switching point. If the object moves towards the sensor (e.g. with level control) then the taught distance is the level at which the sensor has to switch the output, see Fig. 3.

Fig. 3: Setting the switching point for different directions of movement of the object

If the object to be scanned moves into the detection zone from the side, the »Set switching point +8 % – method B« Teach-in procedure should be used. In this way the switching distance is set 8 % further than the actual measured distance to the object. This ensures a reliable switching behavior even if the height of the objects varies slightly, see Fig. 3.
The sensor can be reset to its factory setting (see Diagram 1).

Technical data

| nano-15…| nano-24…
---|---|---
|
blind zone| 20 mm| 40 mm
operating range| 150 mm| 240 mm
maximum range| 250 mm| 350 mm
angle of beam spread| see detection zone| see detection zone
transducer frequency| 380 kHz| 500 kHz
resolution| 69 µm| 69 µm
reproducibility| ±0.15 %| ±0.15 %
detection zone for different objects:

The dark grey areas represent the zone where it is easy to recognise the normal reflector (round bar). This indicates the typical operating range of the sensors. The light grey areas represent the zone where a very large reflector – for instance a plate – can still be recognised.
The requirement is an optimal alignment to the sensor.
It is not possible to evaluate ultrasonic reflections outside this area.