Omron E3C-LDA - DATASHEET 3 Datasheet page 6

Setting Thresholds
Teaching for Through-beam or Retroflective Sensor Heads
Teaching for a Through-beam or Retroflective Sensor Head is performed without a workpiece.
A value about 6% less than the incident light level is set as the threshold value. This method is ideal to stably detect very small
differences in light level.
Reflector
If DIFF (differential operation) is set for the detection method, the threshold value will be set to the minimum value below
the incident light level without a workpiece that will enable stable detection.
Setting Mode
Switch to SET mode.
SET RUN
Press the UP or DOWN key.
The sub-display will flash.
TECH ----
Switch to RUN mode.
SET RUN
The threshold value that was set will flash twice.
THRU
Threshold value
Setting Errors
THRU
Teaching completed and previous display returns.
Teaching for Reflective Sensor Heads
Teaching for a Reflective Sensor Head is performed without a workpiece (i.e., for the background).
A value about 6% greater than the incident light level is set as the threshold value.
This method is ideal to stably detect very small differences in light level.
If DIFF (differential operation) is set for the detection method, the threshold value will be set to half of the difference be-
tween the two measured values.
A-460
Flashes twice
Do one of the following and then repeat the operation
• Adjust the Head to increase the incident light level.
• Execute power tuning.
LO
Advanced Photoelectric Sensors