Photoelectric Sensors
4-2. Teaching a Through-beam Fiber Unit without a Work-
piece
A value about 6% less than the incident light level can be set as the
threshold value. This method is ideal when detecting very small dif-
ferences in light level, such as when detecting very fine workpieces
or transparent workpieces like transparent fibers.
4-3. Teaching a Reflective Fiber Unit without a Workpiece
A value about 6% greater than the incident light level can be set as
the threshold value. This method is ideal when using a Reflective
Fiber Unit to detect workpieces so that detection is not influenced to
any great degree by dust and other environmental factors.
4-4. Teaching With and Without a Workpiece
Teaching can be performed twice, once with and once without a
workpiece, and the value between the two measured value can be
set as the threshold.
UP DOWN
RUN
"- - - -" will be displayed.
With no workpiece:
The previous display will
return when the setting
has been completed.
The set threshold
value will flash twice.
Threshold
TECH ----
Light level Threshold
THRU Threshold
Either for 1 s
To RUN
Light level
SET
Set the Mode Selector
to SET.
UP DOWN
UP DOWN
SET
"- - - -" will be displayed.
With no workpiece:
The previous display will
return when the setting
has been completed.
The set threshold
value will flash twice.
Light level Threshold
TECH ----
Light level Threshold
RFCH Threshold
Set the Mode Selector
to SET.
Either for 1 s
Either for 3 s
UP DOWN
UP DOWN
Workpiece
SET
"- - - -" will be displayed.
With a workpiece:
The previous display will
return when the setting
has been completed.
The set threshold
value will flash twice.
Light level Threshold
TECH ----
Light level Threshold
RFCH Threshold
Set the Mode Selector
to SET.
With no workpiece:.
Either for 1 s
Either for 1 s
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