Leuze electronic GmbH + Co. KG
In der Braike 1 D-73277 Owen Tel. +49 (0) 7021 573-0
HTU330-3500…-M12 - 01
[email protected] • www.leuze.com
HTU330-6000…-M12 - 01
Synchronization of multiple HTU330 ultrasonic sensors
If adjacent ultrasonic sensors receive the signals of other sensors, so-called crosstalk occurs, which leads to faulty measurement
results. Through temporal synchronization of the adjacent sensors, this can be avoided. Via the Sync/MUX input, the HTU330
ultrasonic sensors can be synchronized in 2 different ways:
Synchronous operation
In this operating mode the mutual interference of adjacent sensors can be avoided; a minimum mounting distance between the
sensors is to be maintained, however:
Sensors of the same type are wired together in a network according to the following diagram. A synchronization pulse from the
control activates synchronous operation.
The devices work in synchronous operation with a simultaneous transmission pulse. The response time of the individual sensors
in the network corresponds approximately to that of a single sensor.
Synchronous operation wiring schematic
Timing diagram for synchronous operation
Working distance
Minimum mounting distance
< 1,500mm
100mm
u
1500mm
50mm
Sensor 2
Sensor 1
Sensor n
NOTE
Please make certain that the wiring is performed accord
-
ing to the connection diagram.
The Sync/MUX pin 5 on all sensors in the network must
be connected to one output of the control. Generation of
the synchronization signal for all sensors in the network
occurs via the control.
+10 - 30 VDC synchronization pulse
from the control
PLC
t
sync
t
sync
t
cycle
0 V
+10 - 30 V
Scanning range
Sync impulse duration t
sync
Cycle time t
cycle
250 … 3500mm
0.5 … 5ms
35ms
350 … 6000mm
0.5 … 1ms
60ms
HTU330
Ultrasonic sensors with 2 switching outputs
