Cut Sheet

gain, pressing “–” once lowers the gain to 6X, exhibited by LED #8 ON. Pressing it twice more results in approximately 5X
excess gain, exhibited by LED #7 ON. Holding the “+” button for 2 seconds results in a return to maximum gain (20X),
exhibited by LEDs #7 and 8 flashing.
Set the Switchpoint
Method Action Result
Push Button Press and hold "+" > 2 seconds
Green Power LED: OFF
Amber Output LED: ON
Bar graph: #7 & 8 flashing
• Sensor returns to RUN mode
with new settings
• Use Manual Adjust to increase
or decrease sensor excess gain
11 33 44 55 66 77 88 22
LOLO
DODO
+
GAIN
—
Remote Input
2
Single-pulse the remote input.
T
Low-Contrast SET - Model QS30LLPC
Darkest
(no signal)
Most Light
(saturated
signal)
Output ON Output OFF
Location of switchpoint
adjusted via Manual Adjust
Sensor
Switchpoint
Learned
Signal from
Retro Target
35% of
Learned Signal
(+) (-)
Figure 6. Low-Contrast SET (Dark Operate shown)
• Sets a switchpoint at 35 percent below the signal from the
retroreflector.
• Useful for small object detection and other applications with
small variations in contrast, such as yarn- or thread-break
applications.
• Sensor must be aimed at the reflector during the SET process.
All conditions darker than the switchpoint condition result in ON
output (Dark Operate). Output ON and OFF conditions can be
reversed by changing Light/Dark Operate in SETUP mode
(factory setting: Dark Operate).
Manual Adjust – Low-Contrast SET
During RUN mode, adjusts switchpoint up or down via “+” or “–” push buttons.
• Each push button “click” adjusts the switchpoint up by 5 percent of the signal from the reflector or down by the
same increments.
• The lighted bar graph LEDs move to reflect the increase or decrease in excess gain.
• LEDs #7 and 8 flash when maximum gain is achieved; LEDs #1 and 2 flash when minimum gain is achieved.
If the target object does not cause the output to change state, press the “–” button to decrease the gain, making the
sensor more sensitive to small signal changes.
2
0.04 seconds ≤ T ≤ 0.8 seconds
WORLD-BEAM QS30 LLP and LLPC
P/N 112355 Rev. E www.bannerengineering.com - Tel: [phone]