Functions; Parameterizable Functions Of The Transmitter; Transmission Channel - Siemens SIMATIC FS400 Anleitung

b
a = Protective screen
b = Screen clamp
c = SIMATIC FS400 3RG7845 light curtain or light grid
Fig. 3.6-1: SIMATIC FS400 3RG7845 with protective screen
4

Functions

4.1

Parameterizable functions of the transmitter

4.1.1 Transmission channel

The infrared beams are modulated with specially shaped pulse bundles so that they
are distinct from ambient light and undisturbed operation is consequently ensured.
Welding sparks or warning flash lights from passing forklifts do not have any effect on
the protective field.
If two protective fields are located directly next to each other for two adjacent
machines, measures must, however, be implemented so that the optical safety devices
do not affect each other.
Both transmitters should first be assembled "back to back" so that the beams radiate in
opposite directions. It is consequently impossible for them to affect each other.
Another possible way to suppress mutual influences is to switch one of the two safety
devices from transmission channel 1 to 2, thereby switching them to differently formed
pulse bundles. This solution should be considered when more than two optical safety
systems must be arranged next to each other.
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a
c