Installation Example 1 Of Standard Muting Mode (Using Two Muting Sensors) - Omron F3SG-PGA-A User Manual

System Operation and Functions
2-13-2-2. Installation Example 1 of Standard Muting Mode (Using Two
Muting Sensors)
This is an example of two retro-reflective type photoelectric sensors used as muting sensors installed
in a cross pattern.
Use two sensors when the length L of the workpieces are not constant or are insufficient.
1.
Before a workpiece passes through
L: Length of workpiece
d1: Maximum distance required for the muting sensor to keep the muting function enabled
D1: Minimum distance required for the muting sensor to keep the muting function enabled
C1: Emitter of F3SG-SR or F3SG-PGA-A/-L or passive mirror of F3SG-PGA-C
C2: Receiver of F3SG-SR or F3SG-PGA-A/-L or emitter/receiver of F3SG-PGA-C
The output state of the muting sensors A1 and B1 are both OFF, and the safety function of the F3SG-
SR/PG C1 and C2 is enabled.
In this example where two muting sensors are used, the crossover point of the muting sensors A1 and
B1 is in the hazardous zone. This configuration prevents the Muting function from being enabled by a
person passing through the crossover point.
2.
MUTING started
When the muting sensors A1 and B1 are turned ON in this order, the F3SG-SR enters the MUTING
state. In this state, the safety function of F3SG-SR/PG C1 and C2 is disabled.
F3SG-SR/PG
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User's Manual
B1
Workpiece
V
A1
L
B1
Workpiece
A1
Hazardous zone
C1 Mirror
The crossover point of muting sensors
A1 and B1 must be located within the
hazardous zone
C2 Mirror
d1=D1
Hazardous zone
C1 Mirror
C2 Mirror