Banner D12 Series - Manual (Page 6)

Output Configuration Programming
ON
7
6
5
4
3
2
1
ALM
LO
DO
40 ms
0 ms
Light/Dark
Operate Indicators
0 or 40 ms Pulse
Stretcher Indicators
D12 Expert setting indicators, shown set
to factory defaults
Use the push button and a combination of single-, double-, and triple-clicks to program the
sensor. (For a description of these clicks, see
Remote Programming on page 7). Two
output functions may be programmed by the push button:
1. Either no delay or a fixed 40 millisecond pulse stretcher (OFF-delay) for loads (or cir-
cuit inputs) that are too slow to react to a quick event. With no OFF-delay, sensing
response is a fast 200 microseconds (.0002 seconds), both ON and OFF.
2. The output may be programmed for either light operate (LO) or dark operate (DO). In
light operate, the sensor load output is energized during the light condition; in dark
operate the load output is energized during the dark condition.
These two output functions are programmed in sequence – first the output timing, followed
by the light/dark operate selection – as explained in the chart. The factory settings are 0
millisecond OFF-delay (no delay) and light operate (LO). To check the output configuration
at any time, hold down the push button for 2 seconds. The sensor’s seven-segment LED
display indicates the setting for 10 seconds, while the sensor continues normal operation.
NOTE: To escape from Program mode and return to Run mode at any point, push and hold
the push button for 2 seconds.
Push button Mode Indicator Status
Push and hold 2 seconds or longer - Output set-
tings are displayed. Change from Run mode to Output Configuration
(Display) mode Two steady red LEDs indicate the output set-
tings: light or dark operate and output timing (0
or 40 ms).
The sensor continues to operate normally during
the display period. The display automatically re-
turns to Run mode if the button is not pushed
within 10 seconds.
Triple-click - Output timing selection is dis-
played.
(Single-click to toggle between 0 ms and 40 ms) Change to Output Configuration (Program)
mode
(Output timing selection) Red LED flashes at 1 Hz opposite either 0 ms or
40 ms output timing. The sensor returns to Run
mode if the button is not pushed within 90 sec-
onds.
(Flashing red LED toggles between 0 ms (no de-
lay) and 40 ms (off-delay))
Double-click - Output timing is stored and the LO
or DO selection is displayed.
(Single-click to toggle between LO and DO) Continue in Output Configuration (Program)
mode
(Light/dark operate selection) Red LED flashes at 1 Hz opposite either LO or
DO output mode. The sensor returns to Run
mode if the button is not pushed within 90 sec-
onds.
(Flashing red LED toggles between LO and DO)
Double-click - LO/DO choice is stored and the
sensor returns to Run mode. Return to Run mode The 7-segment LED bar graph indicates relative
received signal strength.
TEACH-Mode Programming
Sensitivity is automatically set (and optimized) by “teaching” the sensor the light and dark conditions in TEACH mode. TEACH mode is
accomplished by presenting each of the two sensing conditions to the fiber optics. They may be presented in either order (the light condi-
tion first, then the dark, or vice versa). When the button is clicked, the sensor samples the sensing condition and registers it into memory.
After the second sensing condition is registered, the sensor automatically sets its sensitivity to the optimum value for the application, and
the sensor returns to RUN mode.
NOTE: There is a period of a few seconds at the end of TEACH mode when the display is blank, before RUN mode begins.
Contrast Indication
When the push button is clicked to teach the second condition (see TEACH-Mode Programming on page 6), the 7-segment display flash-
es 1 to 7 LEDs three times to indicate relative contrast level. Contrast is the difference in light level between the two sensing conditions.
Higher contrast allows a higher sensitivity level, and, therefore, a higher excess gain. In short, a high contrast level is directly related to
sensing reliability, and to the sensor’s ability to “forgive” subtle changes in sensing conditions.
D12 Expert Series - TEACH-Mode Fiber Optic Sensors
6 www.bannerengineering.com - tel: 763-544-3164 P/N 041974 Rev. D