Banner SL30 Series Slot Sensors - Manual (Page 3)

SLE30 Expert ™ Series Slot Sensor
3
Banner Engineering Corp. • Minneapolis, U.S.A.
Website: http://www.baneng.com • Tel: 612.544.3164
Using the SLE30 Expert Series Slot Sensor
RUN Mode
Normal operation of the SLE30 Expert is called RUN mode. The two LED indicators
(bi-color Green/Red and Yellow) operate as follows in RUN Mode:
Green (RUN Mode): ON steady whenever power is applied
Flashes as received light level approaches the switching threshold
(stability indicator. The stability indicator signals when
maintenance or reprogramming is needed during RUN mode.)
Yellow (Output): ON when the outputs are energized (conducting)
OFF when the outputs are de-energized (not conducting)
If contrast is marginal, the bi-color indicator will flash green (to indicate instability).
Reprogramming the sensor, or cleaning the sensor lenses may solve a problem with
stability.
TEACH Mode
Programming of the SLE30 Expert – setting the sensitivity and selecting output ON and
OFF conditions – is performed in TEACH Mode. The SLE30 provides two methods for
programming: Static TEACH and Dynamic TEACH. Static TEACH is used in all
programming situations to set up the sensor’s output ON and output OFF conditions.
Sensitivity is then set using either the Static method described below or the Dynamic
method on page 4.
Both Static TEACH and Dynamic TEACH may be performed using either the sensor’s
TEACH push button or the Remote TEACH line (see page 6).
Static TEACH
Determining the Output ON and OFF Conditions
The two sensing conditions may be presented in either order. The condition presented
first is the condition for which the outputs will energize (the “Output ON” target).
Setting Sensitivity
Sensitivity is automatically set (and optimized) when teaching the sensor the ON and
OFF conditions. When the push button is clicked, the sensor samples each sensing
condition and registers it into memory. After the second sensing condition is
registered, the SLE30 Expert automatically sets the sensitivity to the optimum value
for the application, and then returns to RUN mode.
The two LED indicators (bi-color Green/Red and Yellow) operate as follows in
TEACH Mode:
Red (TEACH Mode): Lights when the sensor “sees” its modulated light source;
pulse rate is proportional to the received light signal strength
during TEACH programming
Yellow (Output): ON to indicate TEACH output ON condition
OFF to indicate TEACH output OFF condition
The Signal Strength indicator is Banner’s exclusive AID ™ (Alignment Indicating
Device). Its pulse rate increases as the received light signal strength increases (during
programming). This feature simplifies accurate alignment during TEACH mode, and
gives a relative indication of sensing contrast between the light and dark conditions.