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

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	+U_B	brown
3	– U_B	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

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.
accuracy	±1 % (temperature drift internally compensated)	±1 % (temperature drift internally compensated)
operating voltage U_B	10 to 30 V DC, reverse polarity protection (Class 2)	10 to 30 V DC, reverse polarity protection (Class 2)
voltage ripple	±10 %	±10 %
no-load current consumption	<25 mA	<35 mA
housing	brass sleeve, nickel-plated, plastic parts: PBT;	brass sleeve, nickel-plated, plastic parts: PBT;
	ultrasonic transducer: polyurethane foam,	ultrasonic transducer: polyurethane foam,
	epoxy resin with glass content	epoxy resin with glass content
max. tightening torque of nuts	1 Nm	1 Nm
class of protection per EN 60529	IP 67	IP 67
norm conformity	EN 60947-5-2	EN 60947-5-2
type of connection	4-pin M12 circular plug	4-pin M12 circular plug
controls	Teach-in via pin 2	Teach-in via pin 2
scope of settings	Teach-in	Teach-in
indicators	2 LEDs	2 LEDs
operating temperature	–25 to +70 °C	–25 to +70 °C
storage temperature	–40 to +85 °C	–40 to +85 °C
weight	15 g	15 g
switching hysteresis	2 mm	3 mm
switching frequency	31 Hz	25 Hz
response time	24 ms	30 ms
time delay before availability	<300 ms	<300 ms

order no.	nano-15/CD	nano-24/CD
switching output	pnp, U_B–2 V, I_max = 200 mA	pnp, U_B–2 V, I_max = 200 mA
	switchable NOC/NCC, short-circuit-proof	switchable NOC/NCC, short-circuit-proof

order no.	nano-15/CE	nano-24/CE
switching output	npn, –U_B+2 V, I_max = 200 mA	npn, –U_B+2 V, I_max = 200 mA
	switchable NOC/NCC, short-circuit-proof	switchable NOC/NCC, short-circuit-proof

Enclosure Type 1
For use only in industrial
machinery NFPA 79 applications.

The proximity switches shall be used with a Listed (CYJV/7) cable/connector assembly rated minimum 32 Vdc, minimum 290 mA, in the final installation.

Documents / Resources

microsonic nano Series Ultrasonic Proximity Switch with One Switching Output [pdf] Instruction Manual
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References

User Manual

Product Description