Data light beam switches LS600-DA-IBS
Application notes
Is
s
ue
dat
e
11/
25/
2009
Par
t No.
220570
13
6
Application notes
The data transmission unit causes a signal delay of 4 ... 5 µsec. This fact has to be taken
into consideration, when calculating the responsetime of a device being connected with
the LS600-DA-IBS to the bus-system, which will be delayed, i.e. of 8 ... 10 µsec.
The switch S1 inside the clamp block connects the shielding of the data-cable directly
galvanically (ON) or with capactive coupling (OFF) via an capacitor 10 nF/630 V to hous-
ing potential. The last might be necessary in case of unavoidable low frequent noise on
ground potential.
To obtain the expected performance of the data transmission unit it requires regular
working conditions as permanent powering the devices and the absence of mirrors or
strange optical activities within the field of view. If it is inevitable to power off only the car-
side device it is recommended to arrange the devices as shown in the application exam-
ple.
The switches S2 + S3 behind the terminal block cover can be closed (position ON), so
that the incoming and outgoing data lines are linked. That provides signal looping during
the installation, as long as the data transmission units are not yet mounted.
Before placing the optoelectronic device onto the terminal block, these
switches must be set into the "OFF" position.
