Omron F3SG-PG Series, User Manual, Page: 112 / 473

82
Chapter
2
Mu
ti
ng
F3SG-SR/PG
User’s 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
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.
W orkpiece
L
C1
C2
d1=D1
B1
Mirror
Mirror
A1
Hazardo u s zone
V
The crosso v er point of m u ting sensors
A1 and B1 m u st b e located w ithin the
hazardo u s zone
L: Length of w orkpiece
d1: Maxim u m distance re qu ired for the m u ting sensor to keep the m u ting f u nction ena b led
D1: Minim u m distance re qu ired for the m u ting sensor to keep the m u ting f u nction ena b led
C1: Emitter of F3SG-SR or F3SG-PGA-A/-L or passi v e mirror of F3SG-PGA-C
C2: Recei v er of F3SG-SR or F3SG-PGA-A/-L or emitter/recei v er of F3SG-PGA-C
W orkpiece
C1
C2
Hazardo u s zone
B1
Mirror
Mirror
A1