Banner SL30 Series Slot Sensors - Manual (Page 4)

SLE30 Expert ™ Series Slot Sensor
4
Banner Engineering Corp. • Minneapolis, U.S.A.
Website: http://www.baneng.com • Tel: 612.544.3164
A Note About the “Clicks”: Clicks are meant to be pressed firmly, then quickly
released. Indicators go ON or OFF after a brief delay; do not wait until LEDs change
status before releasing push button. (If push button is pressed for 2 seconds or
longer, sensor will automatically return to RUN mode.)
Dynamic TEACH
Dynamic TEACH is a method of setting the sensor’s sensitivity while the object to be
sensed is in motion. Typical applications are label sensing and small parts detection. In
a label application, web flutter may change the amount of light passing through the
label and its backing material. Dynamic TEACH will sense this variation and adjust the
sensitivity to account for it.
In a small parts detection application, alignment of the object to the sensor’s effective
beam may make Static TEACH difficult. In this case, Dynamic TEACH will allow you to
pass individual or multiple parts through the beam; the sensor then will detect them and
set the sensitivity automatically.
Determining the Output ON and OFF Conditions
Dynamic TEACH is used for optimizing the sensor’s sensitivity and will not configure the
output ON and OFF conditions. A Static TEACH must be used first to change the output
ON and OFF conditions, if needed. If the outputs are configured properly for your
installation, Dynamic TEACH may be performed as needed without reverting back to
Static TEACH.
Setting Sensitivity
Sensitivity is automatically set and optimized when the sensor is taught dynamically.
When the push button is depressed and held, the sensor continues to sample events
and registers them into memory. Upon release of the button, the sensor chooses the
optimum setting for the application and then returns to RUN mode.
Push Button Resulting Indicator Status
TEACH Condition #1
(Output ON state)
Present the first
sensing condition to
the sensor and single-
click.
†
Press and hold until
the bi-color (green/red)
indicator begins to
flash red, or turns OFF.
Push and Hold
≥
2 Seconds
Sensing
Condition
Yellow: ON
Red:
Pulses to indicate relative received signal
strength.
Sensing
Condition #1
(Output ON State)
Single-Click
Yellow: OFF
Red:
Pulses to indicate relative received signal
strength.
TEACH Condition #2
(Output OFF state)
Present the second
sensing condition to
the sensor and single-
click.
Single-Click
Sensing
Condition #2
(Output OFF State)
If contrast is acceptable, the sensor returns to
RUN mode; otherwise it will return to TEACH
Condition #1.
Green: ON (or flashes if signal is close to the
switching threshold).
Yellow: OFF, until the sensing condition changes.
† NOTE: The sensor will return to RUN mode if the first TEACH condition is not registered within 90 seconds. TEACH mode may be cancelled
before either condition #1 or #2 by holding the push button depressed for
≥
2 seconds.
Static TEACH Sequence