UVX 300G Operating Instructions
7
Document no.
10010204
Operation (Continued)
Extend Output Pulse (P)
This feature allows extending the minimum length of time that the discrete output remains
active following target detection. The sensor response can be in the 100uS (microsecond)
range, i.e. a target can move through the sensing range in 100uS and the discrete output would
active for only that duration. A slower acquisition system (PLC) may not sample its inputs at a
fast enough rate to capture the signal. The discrete output pulse can be extended from 0 to
90mS (milliseconds) in 10 mS increments as indicated by P0 though P9 on the display. Press
and release the
T/+
key to toggle through the selections.
Null Offset (nu)
NOTE: Always perform the null function when installing or removing optional lens or
changing LED intensities.
The null feature allows the sensor to be “zeroed”. For example, when the target is not in view
and there is a background that causes a reading above zero, the null feature allows this level to
be subtracted out, allowing the display to indicate 00. Press and hold the
T/+
key to null the
sensor. The display will flash the value that is being subtracted. To set the sensor back to a
true zero, aim the sensor away from any target and repeat the null process.
Gain Adjustment (r)
To change the gain setting press and release the
T/+
key to toggle through the selections. R1
indicates a gain of 1; R2 indicates a gain of 10. The selected gain is stored in memory and is
retained when power is removed. After changing the gain setting always perform the null
offset (
nu
) to re-zero the sensor.
Teach Function
The teach function allows the user to set the threshold by placing a representative target
located at the required distance and allowing the sensor to determine the optimum LED
intensity and setting of the threshold level.
1.
Press and hold the
T/+
key for several seconds until the yellow led flashes.
2.
Place the target at the appropriate distance from the sensor and press the
P/-
key. The
display will flash 3 times and the sensor will adjust the LED intensity level to achieve
reasonable signal level. The green LED will flash.
3.
Remove the target and press the
P/-
key. The display will flash 3 times.
4.
Exit the teach function and return to the normal operating mode by Pressing the
T/+
key
for several seconds.
