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MASTER/SLAVE POSITIONING
In addition to the standard models, SLC 410 B / BM is available in the MASTER/SLAVE
configuration. Such configuration is made of two pairs of light curtains, where the two
Emitters and the two Receivers are respectively connected in series.
In MASTER/SLAVE models the blanking function is available only on the MASTER
light curtain.
The most common application is shown in Figure 3: the horizontal light curtain (A) has been
installed to detect the presence of a person between the vertical light curtain (B) and the
dangerous machine at system power-up or restart.
The length of the connection cable between the Master and the Slave can be up to 50 m.
This makes it possible to install two light curtains - one at the front and the other at the rear
of the machine – with just one connection to the power and control circuits of the machine.
Light curtain
MASTER
6
Light curtain B
(MASTER)
Light curtain A
(SLAVE)
Reference plane (G)
PROTEZIONE MECCANICA
TX1
Emitter
BARRIERA
MASTER
MASTER
BARRIER
RX1
Receiver
PROTEZIONE MECCANICA
Point of danger
Figure 3
MECHANICAL GUARD
MACCHINA
DANGEROUS
PERICOLOSA
MACHINE
MECHANICAL GUARD
Figure 4
TX2
Emitter
SLAVE
Light curtain
BARRIERA
BARRIER
SLAVE
SLAVE
Receiver
RX2
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