6
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.
Figure 3
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.
PROTEZIONE MECCANICA
PROTEZIONE MECCANICA
MACCHINA
PERICOLOSA
TX1
TX2
RX1
RX2
BARRIERA
MASTER
BARRIERA
SLAVE
Figure 4
MECHANICAL GUARD
MASTER
BARRIER
SLAVE
BARRIER
DANGEROUS
MACHINE
MECHANICAL GUARD
Light curtain B
(MASTER)
Light curtain A
(SLAVE)
Reference plane (G)
Point of danger
Light curtain
MASTER
Light curtain
SLAVE
Emitter
Emitter
Receiver
Receiver
Summary of Contents for SLC 410 B
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