6/8
4.3 Incoming light level display
Two methods of displaying incoming light level on the digital display
can be selected.
Normal display (initial mode): Displays the current incoming light
level (red) and the set value (green)
Stability safety margin indication: The letter P (green) and the ratio
(in %) if the incoming light level (red) to the detection threshold are
displayed.
4.4 Monitor sleep mode
The current consumption can be decreased about 30% if the display
will be turned off. A green moving point in the display shows that the
sensor is still working in normal operation.
If using the display-off function, the display changes to energy
saving mode after 20 seconds.
4.5 Display inversion
4.6 Self threshold adjustment STA
This function automatically adjusts the detection threshold using a
given ratio of the threshold to the incoming light level. The auto-
adjustment of the threshold is carried out at regular intervals
(approx. every 3 s). When STA is enabled, the STA indicator is lit. If
the threshold is not adjusted due to the incoming light level fall in
below the limit, the indicator blinks. When STA is enabled, neither
manual tuning nor auto-tuning is possible. If STA will be used, check
its operation in advanced. If the incoming Light level fluctuates due
to a combination of the sensor and a diffuse scan fiber unit or a slow
work piece speed, STA may fail to adjust the threshold to the
expected one.
4.7 Option
Option settings allow a combination of automatic sensitivity
switching saving to EEPROM and enabling/disabling STA reset.
EEPROM storage: Settings modified by STA are stored in
EEPROM. When the function is enabled settings are stored in
EEPROM. When function is disabled settings are not stored in
EEPROM. If writing to EEPROM would be very frequent, select
“disabled” (durability: approx. 200’000 erase-write cycles).
4.8 Emitter frequency switching
The emitter LED frequency can be selected from Fr-1 and Fr-2
(when “normal” or “semi fast” is selected). Even if fiber units are next
to each other, mutual interferences can be prevented for up to 2
units by selecting different frequencies.
4.9 Factory setup
–
+
AUTO
OK
Press
Press
AUTO
OK
Normal
display
Stability safety
margin
indication
Preset value
Incoming
light level
Stability
safety
margin
P *
Menu
Display
(green)
Display
(red)
Indication
type
When the stability safety margin is indicated, “P” is always displayed.
Disable monitor sleep
Enable monitor sleep
Press
Press
AUTO
OK
AUTO
OK
–
+
Do not invert
Invert
–
+
Press
Press
AUTO
OK
AUTO
OK
Timer types
When STA is
disabled
Setting of
the STA rate
When STA is enabled
STA is disabled
STA is enabled
Press
AUTO
OK
AUTO
OK
AUTO
OK
–
+
–
+
Press
AUTO
OK
*Between 50 and 95 P, STA can be set in increments of 5 P.
–
+
AUTO
OK
Press
Press
AUTO
OK
○
○
○
○
○
○
○
Menu
Automatic
sensitivity
switching
STA
reset upon
power-up
EEPROM
Storage
–
+
Press
Press
AUTO
OK
AUTO
OK
Response times for Fr-2 differ from those for Fr-1.
Do not initialize
Initialize
Initialize
Do not initialize
Return to normal operation after initialization
Press
AUTO
OK
Press
AUTO
OK
–
+
5. Behavior if an error occurs during Teach-in
If an error occurs while teach-in (e.g. insufficient contrast, insuffi-
cient light level), it will be indicated on the display and the switching
output remains at 0V.
The switching output remains at 0V until another successful teach-in
has been carried out or the failed teach-in has been manually
acknowledged using the "FUNC/CANCEL" button.
