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Chapter2 Fixed Blanking
F3SG-SR
User’s Manual
System Operation and Functions
2-15. Fixed Blanking
Install a protective structure to cover the whole blanked zone in order to prevent personnel
approach to hazardous part of the machine through the blanked area.
If allowable beams are designated for Fixed Blanking, detection capability gets larger near an
object that blocks beams. The safety distance calculation must be based on the increased
detection capability for this function. Otherwise, the machine may not stop before a person
reaches the hazardous part, resulting in serious injury.
2-15-1. Overview
Fixed blanking function
This function disables a part of the F3SG-SR detection zone. The safety outputs stay in the ON state
even if an object exists in the disabled zone.
The fixed blanking zone must include at least one zone consisting of continuous beams. Up to three
fixed blanking zones (zone 1 to zone 3) can be set. Note that you cannot set all beams to the fixed
blanking zone. In the primary sensor, you cannot set both of the end beams (or synchronization
beams) to an identical fixed blanking zone.
Fixed blanking zone setting
A zone for fixed blanking zone must be configured. You can configure the zone by the Teach-In using
a blocking object placed in a desired position or by designating desired beams manually. In this
example shown below, the 5th and 10th beams are set as bottom and top beams respectively.
For details of the teach-in setting with Push Switch or Muting Input A,, see 3-7-1. Setting Fixed Blanking by Teach-in.
For details of the teach-in setting with SD Manager 3, see 4-3-4-1. Fixed Blanking.
F3SG-SRA
F3SG-SRB
Fixed blanking zone
10th beam
5th beam
Upper Upper
Lower Lower
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