WORLD-BEAM QS18U Ultrasonic Sensors
Taught Position
(background surface)
Near
Range
Position
-10 mm
Position
+10 mm
Sensor
Output
ON
Any object in this area will switch
the output, whether or not the object
returns a good signal to the sensor.
Sensor
Output
OFF
Output OFF
Output ON
Sensing Distance
Figure 5. An application for the Auto-Window feature (retroreflective mode)
Normally Open/Normally Closed Operation Select
Configure the sensor for either normally open or normally closed operation using the remote teach wire (white). A series of
three pulses on the line toggles between normally open (NO) and normally closed (NC) operation. Normally open is defined
as the output energizing when the target is present. Normally closed is defined as the output energizing when the target is
absent. (See Figure 3 on page 3 and Figure 4 on page 4.)
Procedure
Result
Push Button (0.04 sec ≤ Click ≤
Remote Line (0.04 sec < T < 0.8 sec)
0.8 sec)
Toggle
between
NO/NC
Not available via push button
Triple-pulse the remote line
Selects either Normally Open or
Normally Closed operation
depending on the previous
condition.
T
T
T
Operation
T
T
Push Button Lockout
Enables or disables the push button to prevent unauthorized personnel from adjusting the program settings.
Procedure
Push Button ( 0.04 sec ≤ Click ≤ 0.8
Result
Remote Line ( 0.04 sec < T < 0.8
sec)
sec)
Push Button Not available via push button
Lockout
Four-pulse the remote line
Push buttons are either enabled
or disabled, depending on
condition.
T
T
T
T
T
T
T
P/N 119287 Rev. J
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