8540581 - 29/09/2010 - Rev.10
17
2.
•
With all the beams free, the mobile object is missing, therefore the outputs are de-
activated. The letter “b” indicating that the outputs are de-activated due to the absence of
the mobile object is shown on the display of the receiver.
•
With one beam occupied, the mobile object is present (blanking active and outputs ON).
•
With two or three
adjacent
beams occupied (except for the synchronism beam), the area
is considered free (tolerance of ±1 beam).
•
With two or more
non-adjacent
beams occupied, the area is considered occupied.
CURTAIN
occupied
free
free
occupied
free
occupied
STATUS
Figure 15
Nominal resolution
Type of Blanking
Effective resolution at the edges of the blanking area
No blanking
14 mm
Floating blanking B1
16 mm
14 mm
Floating blanking B2
26 mm
No blanking
20 mm
Floating blanking B1
20 mm
20 mm
Floating blanking B2
30 mm
No blanking
40 mm
Floating blanking B1
60 mm
40 mm
Floating blanking B2
90 mm
Nominal resolution
Type of Blanking
Minimum detectable object
No blanking
90 mm
Floating blanking B1
140 mm
90 mm
Floating blanking B2
210 mm
Table 8 - Blanking With Object Presence Obligation
Calculate the safety distance S following the formula of page 8 using the D value
obtained from table 8.