Functions
Leuze electronic MLC 530 23
During teaching, the object size detected can vary by no more than one beam. Otherwise teaching is
ended with the U71 user message (see chapter 11.1 „What to do in case of failure?“).
4.7.2 Floating blanking
The “Floating blanking” function allows for the blanking of up to 10 non-overlapping protective field areas
of any size. An object of uniform size can move in each of these.
Application limits:
• The function is only permitted for point of operation guarding with perpendicular approach to the pro-
tective field if safety sensors with physical resolution of maximum 20 mm are used.
• Devices with a physical resolution of more than 20 mm are not permitted for point of operation guard-
ing.
• The function is not permitted for danger zone guarding with parallel approach to the protective field.
Blanked objects would represent “bridges” here, from which a too-small safety distance to the danger
zone would exist.
Activation of the function
The function can be activated and deactivated during operation in operating mode 3 via a two-channel
control circuit (see chapter 7 „Electrical connection“).
Figure 4.3: Floating blanking
After teaching a free protective field (“Teaching finished”), thus determining a protective field
without areas with fixed or floating blanking, the blue LED switches off.
WARNING
Reduced resolution may result in serious injury!
Take into consideration the reduced resolution when calculating the safety distance (see chapter 6.1.1
„Calculation of safety distance S“).
DANGER
Risk of death if safety distance is changed!
The extension of the response time due to the floating blanking must be taken into consideration when
calculating safety distance.
Add the scanning time needed for the largest beam area with floating blanking to the response time
(see chapter 6.1.5 „Resolution and safety distance for fixed and floating blanking as well as reduced
resolution“).
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