A
B
S
t
V
t
t
p
p
1
4
3
6
2
5
Figure 4: Two stage cleaning
S
Trigger signal of the safety laser scanner, e.g., contamination warning, warning field
A
Compressed air in channel A
B
Compressed air in channel B
V
Voltage
p
Pressure
t
Time
1
Stop condition: the cleaning process ends at this time at the latest, even if the contamina‐
tion has not been removed
2
Cleaning with channel B
3
Cleaning with channel A
4
Pause
5
Cleaning step
6
Cleaning process
Complementary information
When contaminated water dries, it leaves residues on the optics cover. The airWiper
cannot remove these residues. If you use a sensitive trigger, the airWiper can remove
the water before it dries so that cleaning is more thorough.
An oil-free compressor with a compressed air tank and filter regulator or a compressed
air bottle is required for the compressed air supply. For automatic cleaning, a controller
or individual components such as relays etc. are required.
The compressed air may cause unexpected noise during cleaning. Persons in the
vicinity should, if necessary, be made aware of the possibility of noise developing.
Further topics
•
"Example: Compressed air supply with compressor", page 35
PROJECT PLANNING
4
8027429/2022-05-20 | SICK
O P E R A T I N G I N S T R U C T I O N S | airWiper
13
Subject to change without notice