World-beam, Qs30elvc series, Switchpoint selection – Banner WORLD-BEAM QS30 Clear Object Sensor User Manual
Page 6: Push button disable, Alarm state
Banner Engineering Corp. • Minneapolis, MN U.S.A
www.bannerengineering.com • Tel: 763.544.3164
6
P/N 139760 rev. A
WORLD-BEAM
®
QS30ELVC Series
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Switchpoint Selection
The switchpoint can be selected during RUN mode and is accomplished via the push
buttons or the remote wire (see Remote Line TEACH, page 7).
Switchpoint selection via push buttons:
• Press “+” and “-” to select desired switchpoint
• Three possible choices; 8, 16 or 32 percent below the signal from the retroreflector.
Selection does not wrap around.
The sensor continues operating normally with the newly selected threshold value. It is not
necessary to repeat the light SET.
Push Button Disable
In addition to its configuration function, Remote Configuration may be used to disable
the push buttons for security. Disabling the push buttons prevents undesired tampering
with the configuration settings. The Green Power LED blinks 4 times if a push button is
pressed while they are locked out. The sensor continues operating normally and ignores
the button press. Connect the gray wire of the sensor as described on page 2, and four-
pulse to either enable or disable the push buttons:
Alarm State
The QS30ELVC Alarm State indicates that the sensor requires attention. In all situations, the alarm can be cleared by realigning the sensor to
the retroreflector, cleaning the sensor or retroreflector of contamination, and performing a Light SET to establish a valid light signal.
Alarm State is indicated by:
• Amber Output LED flashing
• All 3 Red Signal LEDs OFF
• Output forced to blocked state (i.e. if sensor is in dark operate (DO), the output is conducting)
The sensor may enter Alarm State for three reasons:
1. The sensor may be in Alarm State when first powered up. This is normal operation and does not indicate a problem with the sensor.
The Alarm State will be cleared when a valid Light SET is performed.
2. The sensor will enter Alarm State if the Light SET procedure fails. This indicates the sensor did not receive enough light from the
retroreflector for reliable detection. Realign the sensor to the retroreflector, making sure all optical surfaces are free of contamination.
If the automatic compensation algorithm is enabled, the sensor may recover at this point and begin operating normally. It is not
necessary to repeat the Light SET procedure. If automatic compensation has been disabled, the sensor will remain in the Alarm State
until the alignment has been corrected and a Light SET is successfully completed.
3. The sensor can enter Alarm State if the auto compensation algorithm is enabled and the sensor has automatically adjusted the
threshold as much as possible. The sensor and retroreflector should be cleaned, or the sensor should be realigned to the retroreflector.
The sensor will automatically adapt to the new light level, or a Light SET can be performed to reestablish the light level.
In any case, the sensor can be returned to normal operation by ensuring a clean optical path, aligning the sensor to the retroreflector, and
performing a Light SET procedure on the sensor.
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