d11-en6-fp-q Banner Engineering Corp., d11-en6-fp-q Datasheet - Page 2

• Manufacturer Part Number: d11-en6-fp-q
• Description: Series D11 Expert With Automatic Sensitivity Adjustment
• Manufacturer: Banner Engineering Corp.

Series D11 Expert
with automatic
sensitivity adjustment
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Sensor for plastic fibre-optics
Automatic sensitivity adjustment
with external switch or PLC
High excess gain, but also reliable
detection of low sensing contrast
Switching frequency 5 KHz
Visible red light
Switchable off-delay and
light-/dark operation
LEDs for excess gain and sensing
contrast indication
DIN-rail mounting
Bag seal & perforation detection
By the simple push of a button the D11
Expert adapts itself to the specific
sensing application. A microprocessor is
used to optimize programming of the
switch point and hysteresis. This makes
the D11 Expert the ideal sensor for either
low contrast applications or applications
that require high excess gain.
The programming of the D11 Expert is
very simple yet secure. The user access-
es the program mode by holding the
push button for 2 seconds, then presents
the two sensing conditions. In each
sensing condition the button is pressed
once and the sensor automatically finds
the optimum switching point. The first
condition presented sets the condition in
which the output will energise.
Immediately after programming, the
sensing contrast is displayed by the
flashing of the three indicator LED’s one
to four times. This allows the user to
assess, during installation, how reliable
the sensor will be in actual operation.
Three or four flashes (moderate to high
contrast) is recommended for harsh
industrial environments.
Low sensing contrast can often be
improved by changing the distance
between the sensor and the object being
detected or by repositioning the sensor.
Once taught, the sensor retains its pro-
gram until reprogrammed, even if power
is removed.
During operation, the red SIG (signal
strength) LED provides an accurate dis-
play of the excess gain. The red LED
flashes at a rate that is proportional to
the received signal strength and pro-
vides an indication of the gradual
decrease in excess gain due to contami-
nation of the lens that is likely to occur.
A remote programming wire allows pro-
gramming with an external switch or
PLC. This allows a PLC to adapt the
sensor automatically to the actual sens-
ing conditions such as changing the
object to be sensed.
It is possible to disable/enable the pro-
gramming button on the D11 Expert from
the PLC. This avoids unauthorised
changes of the sensor settings when the
D11 Expert is controlled exclusively from
a PLC or any other remote programming
device.
In addition to setting the switching point,
the programming button of the D11
Expert also allows you to toggle
between: no delay and a 40 ms pulse
stretcher.