User guide

Normally Open/Normally Closed Operation Select
The sensor can be configured for either normally open or normally closed operation via the remote teach wire (white). A series of three
pulses on the line will toggle 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.
Teaching independent minimum and maximum limits on page 4 and Figure 4. Using the Auto-Window feature for programming each
output on page 5.)
Procedure Result
Push Button
0.04 sec ≤ Click ≤ 0.8 sec
Remote Line
0.04 sec < T < 0.8 sec
Toggle be-
tween NO/NC
Operation
Not available via push button Triple-pulse the remote line
T T
T
T
T
Either Normally Open or Normally
Closed operation is selected, depend-
ing on previous condition.
Push Button Lockout
Enables or disables the push button to prevent unauthorized personnel from adjusting the program settings.
Procedure
Result
Push Button
0.04 seconds ≤ "Click" ≤ 0.8 seconds
Remote Line
0.04 sec < T < 0.8 sec
Push Button
Lockout
• Not available via push but-
ton
• Four-pulse the remote line
T T
T T T
T T
Push buttons are either enabled or
disabled, depending on condition.
Wiring
NPN (Sinking) Output Models PNP (Sourcing) Output Models
wh
shield
bn
bu
bk
12 - 30V dc
Load
Remote programming
switch (normally open)
wh
bn
bu
bk
12 - 30V dc
Load
Remote programming
switch (normally open)
shield
Cable and QD hookups are functionally identical.
It is recommended that the shield wire be connected to earth ground. Shielded cordsets are recommended for all QD models.
WORLD-BEAM QS18U Ultrasonic Sensors
6 www.bannerengineering.com - tel: [phone] P/N 119287 Rev. H