Banner WORLD-BEAM QS30 Series - Manual (Page 3)

P/N 111384 rev. D
3
WORLD-BEAM ® QS30AF Adjustable-Field Sensor
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Sensor Configuration
The sensor’s cutoff point is set using a simple procedure, via either the push buttons
or the remote wire. Three methods are available: Background Suppression SET, Object
Detection SET, and Dynamic SET (remote only). After the sensor has been set for the
target application, manual adjustments (via the “+” and “–” push buttons) may be used
to fine-tune the cutoff point. Sensor output configuration (N.O./N.C.) and the OFF-delay
function are also set via the push buttons.
Remote Configuration
The Remote Configuration function may be used to configure the sensor remotely
or to disable the push buttons for security. Connect the gray wire of the sensor to
ground (0V dc), with a remote switch connected between them. Pulse the remote line
according to the diagrams in the configuration procedures. The length of the individual
pulses is equal to the value T:
0.04 seconds ≤ T ≤ 0.8 seconds
Background Suppression SET
The distance to the background is sampled; the sensor places the cutoff point at
approximately 95 percent of the distance to the background. In RUN mode, objects
located between the minimum range and the taught cutoff are sensed; anything beyond
the cutoff (e.g., other objects or background surfaces) is ignored.
Minimum range varies, depending on the cutoff distance and reflectivity (see
Figure 11).
Sensing Distance (D)
Approx. 5% of
Sensing Distance
Cutoff
Objects in this area are sensed
Minimum
Range
Background
Figure 3. Background Suppression SET
* Segments 7 and 8 simultaneously flashing: Indiscernible target; sensor defaults to maximum cutoff.
Segments 1 and 2 simultaneously flashing: Background is nearer than minimum cutoff; sensor defaults to minimum cutoff.
Push Button
Remote
0.04 seconds ≤ T ≤ 0.8 seconds Result
Set
Background
• Present background condition.
• Press and hold Background (+)
push button > 2 seconds
(until indicators flash).
• Present background condition.
• Single-pulse the remote line.
• Indicator segments
7 and 8 alternately
flash.
Return
to
RUN
Mode • Sampling continues until the
push button is released; then
sensor returns automatically
to RUN mode.
• Sensor returns to RUN mode.
• If cutoff is accepted, sensor returns
directly to RUN mode.
• If cutoff is beyond sensor range,
Feedback is displayed for 2 seconds (see
page 6).*
T T T T
T
T T
T T T
T T
T T
T
> 2 seconds
NC NO