Cross Talk Mitigation - Omron MS4800E - MANUAL 2 Operation Manual

Cross Talk Mitigation

10-2 Cross Talk Mitigation
30
The interruption is not detected because of the reflection. Reflective surface
interference may also appear above and below the sensing field.
Transmitter
Worst case alignment example
Transmitter
This example shows the minimum distance from the reflective surface, d, to
one side of the beam center line
2
1,8
1,6
1,4
1,2
1
0,8
0,6
0,4
0,2
0
0,1 0,2 0,5 1 2 3
To mitigate interference from other light curtains, the MS4800 system has two
possible scan codes, A and B. The transmitter and receiver units must be set
to the same scan code for the receiver to enter the MACHINE RUN state.
Scan Code A
Approach direction
Interruption
Light beam interrupted
Central beam
d
Reflection
Reflective Surface
Perimeter of danger area
Approach direction
Interruption
Light beam interrupted
Central beam
d
Reflection
Reflective Surface
Perimeter of danger area
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Range [m]
Scan Code B
Section 10-2
Beam Angle, a
a
Receiver
Beam Angle, a
a
Receiver