Omron F3SG-PGA-A User Manual page 115

 Installation Example 2 of Standard Muting Mode (Using Four Muting Sensors)
This installation example uses four through-beam type photoelectric sensors as muting sensors.
The use of four muting sensors is useful when the length of the workpieces is constant or longer, and
the entrance and exit have enough space. Muting can be activated from both directions in the
arrangement as shown below.
1.
Before a workpiece passes through
Workpiece
L
L: Length of workpiece
d2: Maximum distances required for the muting sensor to keep the muting function enabled
D3: 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
All muting sensors are turned OFF, while the safety function of the F3SG-SR/PG C1 and C2 is working.
2.
MUTING started
When the muting sensors A1 and B1 are turned ON in this order, MUTING starts. In this state, the
safety function of F3SG-SR/PG C1 and C2 is disabled.
Hazardous zone
A1 C1 A2
V
B1 C2 B2
d2 d2
D3
Hazardous zone
A1 C1 A2
Workpiece
B1 C2 B2
System Operation and Functions
V Workpiece
E
F3SG-SR/PG
85
User's Manual