D12 Expert Series
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D12 Expert Series Overview
D12 Expert self-contained sensors offer one-button programming which provides
security for your settings, yet is simple to set. D12 Expert sensors offer two
programming modes: TEACH mode and SENSOR OUTPUT CONFIGURATION mode.
The D12 Expert also features an advanced and comprehensive LED status display,
plus sensor self-diagnostics and an alarm output to signal marginal sensing
conditions.
Unlike competitive sensors, D12 Expert models have no exposed switches or
adjustments. All programming is accomplished using a single, sealed push button,
using quick commands. Your settings remain secure, and the sensor is sealed against
the elements of the sensing environment. Also, a separate input is provided for
remote programming (see page 9).
Models are available for either glass or plastic fiber optics (see page 1). Fiber optics
are purchased separately to fit your exact sensing application. A few representative
fiber optic styles are listed on pages 11 and 12. See the Banner Photoelectric Sensors
Catalog for the full selection of fiber optic assemblies.
D12 Expert Series Programming Modes
TEACH Mode
All photoelectric sensing applications (excluding analog response applications)
involve differentiating between two received light levels. The condition with the higher
received light level is known as the
light condition, and the condition with the lower
received light level is known as the
dark condition. The difference between the two
conditions is the
sensing contrast.
The D12 Expert TEACH mode evaluates the light and dark sensing conditions and
automatically adjusts the sensitivity to the optimal level. Programming is fast, easy,
and accurate.
D12 Expert sensors offer high excess gain needed for demanding sensing
environments, and/or for long-range sensing. However, unlike standard D12 sensors,
D12 Expert sensors also excel in
low contrast sensing applications. When a D12
Expert sensor recognizes a low-contrast application during the TEACH mode process,
the sensor’s on-board microprocessor expands the bottom end of the sensitivity
range to establish an accurate setting which will allow the sensor to respond to the
slight difference in received light levels.
ON
7
6
5
4
3
2
1
ALM
LO
DO
40 ms
0 ms
7-Segment Bargraph Indicates:
• Signal Strength
• Sensing Contrast
• Programming Status
• Diagnostic Display
Output Indicator
Power ON Indicator
Programming Push Button
Figure 1. D12 Expert Series features
