Mutual Interference Prevention - Omron F3SG-PGA-A User Manual

Wiring and Installation

5-1-4. Mutual Interference Prevention

Do not use the F3SG-SR/PG with mirrors in a retro-reflective configuration. Doing so may
hinder detection. It is possible to use mirrors to alter the detection zone to a 90-degree
angle.
When using more than one set of F3SG-SR/PG's in adjacent areas, the emitter of one
F3SG-SR/PG may interfere with the receiver of the other, causing the safety functions to
stop working properly. Install, configure and maintain them so that mutual interference does
not occur.
When two or more F3SG-SR/PG systems are mounted in close proximity to each other, precautions
should be taken to avoid one system interfering with another, such as by beam alignment, back-to-back
configuration, physical barrier, Scan Code Selection, Operating Range Selection or adjusting the
distances from adjacent safety light curtains.
 Example
PREFERRED INSTALLATION 1
Machine 1
Code A
Back-to-back configuration
PREFERRED INSTALLATION 3
Emitter
Code A
Emitter
Code A
Distance between emitter and
receiver (operating range L)
For 0.2 to 3m
For 3m or more
In the Wired Synchronization, mutual interference is prevented in up to 3 sets, using interference light
avoidance algorithm.
In the Optical Synchronization, the scan code feature allows for placement of up to 2 sets of the F3SG-
SR/PG in close proximity and in line with each other. The distinctive coding of the beams provide for
unique operation of a system while in view of another system with a different scan code. Two unique
codes are available.
Machine 1
Code A
Scan code setting when two or more systems are mounted
The emitter and receiver units must be set to the same scan code for the receiver to enter the
MACHINE RUN state. The scan code is selectable by the End Caps on the emitter and receiver units.
Refer to  Scan Code Selection under 2-3-1-1. Optical Synchronization for more information on the scan code feature.
F3SG-SR/PG
300
User's Manual
Machine 2
Code A
Receiver
Code A
5°
D
Receiver
5°
Code A
L
Allowable installation distance
D
0.26m
L x tan5 ° = L x 0.088 (m)
Machine 2
Code B
PREFERRED INSTALLATION 2
Machine 1 Machine 2
Code A Code A
Physical barrier between systems
NOT RECOMMENDED INSTALLATION
Machine 1 Machine 2
Code A
Code A