6
Troubleshooting
6.1
Troubleshooting
6.2
Table: Fault diagnosis
8020879.1D62/2022-08-19 | SICK
Subject to change without notice
4 mA = 100 mm
20 mA = maximum sensing range (depending on type)
The setting can be adapted to the application using the teach-inbutton Q
ics E and G). Do not operate the teach-in buttonusing sharp objects. The teach
sequence and object distance definethe characteristic curve of the analog output.
Keep the object in thebeam path. Press and hold the teach-in button Q
theleft-hand yellow LED starts to flash, then release the button. The LEDwill continue to
flash. The current distance to the object is assignedto the 4 mA (0.05 V) value. Then
move the object. Press the teach-inbutton Q
LED stops flashing.The distance to the object is measured and assigned to the 20 mA
(10V) value. A rising or falling edge is produced depending on whether theobject is
moved from distant to close or the other way round.
The analog output can be switched between current and voltage output(see Graphic
J). To do this, press and hold the teach-in button Q
yellow LED and the green LED flash alternately.Then release the button. The green LED
will continue to flash. Theleft-hand yellow LED will light up depending on whether the
sensor isin current or voltage mode. To switch between the modes, press theteach-in
button Q
briefly. If no button is pressed for > 10 s, the sensorwill save the current
A
mode and exit the setting menu.
b) Setting the sensing range
The sensing range is set by pressing the teach-in button Q for > 1 s (seeGraphic F).
Do not operate the teach-in button using sharp objects.We recommend placing the
object within the sensing range. Once thesensing range has been adjusted, the object
is removed from the pathof the beam, which causes the background to be suppressed
and theswitching output to change (see Graphic C).
c) Setting via SOPAS and transferring the settings with the SICK MemoryStick
Alternatively, the sensor can be configured using SICK's SOPASsoftware. The SICK
Memory Stick accessory (IOLP2ZZ-M3201, partnumber 1064290) can also be used
to transfer the settings from onesensor to another. If you have any questions, please
contact your salesrepresentative.
The Troubleshooting table indicates measures to be taken if the sensor stops working.
LED / Fehlerbild
Green LED does not light up
Green LED does not light up
OPERATING INSTRUCTIONS
again for > 1 s until the left-hand yellow
A
for >10 s until the left-hand
A
Cause
No voltage or voltage below
the limit values
Voltage interruptions
O P E R A T I N G I N S T R U C T I O N S | PowerProx Analog – WTT12L-Axxx
(see Graph‐
A
for > 1 s until
A
Measures
Check the power supply,
check all electrical connec‐
tions (cables and plug connec‐
tions)
Ensure there is a stable power
supply without interruptions
23
en