Safety Light Curtain
89
5.2.5.4 Floating Blanking
In certain applications, objects which do not have a clear defined position are permanently located in the
safety field of the ESPE. These could be cables or tool parts, for example, which move through the safety field
for process-related reasons.
The “Floating Blanking” function enables these objects to be hidden.
Figure 25: Application example floating blanking
5.2.5.4.1 Conditions of Use
• A blanking configuration is classed as impermissible (OSSDs switch), if
– The object size (minimum and maximum) in the safety field does not match the parameter configuration.
– The number of objects in the safety field does not match the parameter configuration.
• If a non-hidden beam is covered, this is classed as a penetration and the OSSDs are switched.
• The minimum object size is 2 beams.
• The ESPE monitors the following parameters (see
):
– Number of objects
– Minimum object size
– Maximum object size
– Tolerance (difference between the maximum and minimum object size)
• The tolerance is key for effective resolution (see
). This may be a maximum of:
– 8 beams (for ESPE with 14 mm resolution)
– 4 beams (for ESPE with 30 mm resolution).
– The number of objects and tolerance are shown on the receiver control panel during the parameter con-
)
