Omron Sti F3SJ-E N25 Series User Manual page 47

 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 performed from both directions in the
arrangement as shown below.
1.
Before a workpiece passes through
Workpiece
L
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
All muting sensors are turned OFF and the safety function of the F3SJ-B is working.
2.
The muting sensor is blocked and the safety function of the F3SJ-B is disabled
When muting sensors A1 and B1 are turned ON in this order, the muting function is enabled. In this
state, the safety function of F3SJ-B is disabled.
Hazardous zone
A1 F3SJ-B A2
V
F3SJ-B
B1 B2
d2 d2
D3
Hazardous zone
A1 F3SJ-B A2
Workpiece
B1 B2
System Configuration and Functions
V Workpiece
E
F3SJ-E/B
31
User's Manual