Technical data
Leuze electronic
CML 730-PS
117
Table 16.12:
Profile and measurement field lengths, cycle times for CML 730-PS
Limits for detecting objects
The detection of objects and the evaluation of the data depend on the following factors:
• Beam resolution and cycle time of the light curtain
• Movement speed of the objects
• Transmission rate of the data bytes
• Cycle time of the control
Minimum object diameter for detection perpendicular to beam plane
For a moving object, the cycle time of the light curtain must be shorter than the period of time that the object
to be detected is located in the beam plane.
For an object that moves vertically to the beam plane, the following apply:
v
max
[m/s]
= Maximum object speed
L
[m]
= Length of the object in the direction of movement
t
z
[s]
= Cycle time of the light curtain
or
L
min
[m]
= Length of the object in the direction of movement (minimum length)
v
[m/s]
= Object speed
t
z
[s]
= Cycle time of the light curtain
Measurement field length B [mm]
with beam spacing A: 5 mm
Cycle time [ms]
Profile length L [mm]
160
1.00
168
240
1.00
248
320
1.00
328
400
1.00
408
480
1.16
488
560
1.36
568
640
1.48
648
720
1.68
728
800
1.80
808
880
1.96
888
960
2.12
968
1040
2.28
1048
1120
2.40
1128
1200
2.60
1208
1280
2.76
1288
NOTICE
Minimum length of the gap between two successive objects!
The gap between two successive objects must be greater than the minimum object diameter.
vmax
L 10mm
–
tz
=
Lmin v tz 10mm
+
=