Master/Slave Positioning - schmersal SLC 210 RF Instructions De Montage

MASTER/SLAVE POSITIONING

In addition to the standard models, SLC / SLG 210 RF is available in the MASTER/SLAVE
configuration. Such configuration is made of two pairs of light curtains / light grids, where the
two Emitters and the two Receivers are respectively connected in series.
The most common application is shown in Figure 3: the horizontal barrier (A) has been
installed to detect the presence of a person between the vertical barrier (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 /
Light grid
MASTER
6
Light curtain /
Light grid
SLAVE
Light curtain/-grid
MASTER
Reference plane
TX1
Emitter
BARRIERA
MASTER
MASTER
BARRIER
Receiver
RX1
Point of danger
Figure 3
PROTEZIONE MECCANICA
MECHANICAL GUARD
MACCHINA
DANGEROUS
PERICOLOSA
MACHINE
MECHANICAL GUARD
PROTEZIONE MECCANICA
Figure 4
TX2
Emitter
BARRIERA
Light curtain /
SLAVE
Light grid
SLAVE
Receiver
RX2