K1/K2 External Contactors Connection; Multiple Systems - schmersal SLC 412 Instructions De Montage Et De Raccordement

K1/K2 EXTERNAL CONTACTORS CONNECTION

The inputs of the SLC/SLG 412 Receiver make it possible to configure various operating
modes. At power-on, for correct functioning, the various inputs must be connected as
indicated below.
Feedback of the external contactors K1/K2 is enabled at system power-on (as indicated
in table 5). If this function is enabled, the set of N.C. contacts of the external relays must be
connected to PIN 18 of the Receiver. The voltage level of this input must be:
CONTROL OF
EXTERNAL
CONTACTORS
K1/K2

MULTIPLE SYSTEMS

When more than one SLC / SLG 412 system is used, precautions must be taken to avoid
optical interference between them: install units so that the beam emitted by the Emitter of
one system can only be received by the relative Receiver.
Figure 8 illustrates some examples of correct positioning when two photoelectric systems are
installed. Incorrect
malfunctioning.
Systems installed alongside each other: A
Installation of two adjacent Emitters
Overlapping systems: B
L-shaped installation: C
Crossed positioning of Emitters and Receivers
+24VDC with OSSD static outputs de-activated.
0VDC with OSSD static outputs activated.
K1
18
R
RX
11
Receiver PIN
PIN 11
24VDC
0
K1
0
24VDC 24VDC
positioning
K2
PIN 18
0
K2
0
Table 5
could generate interference,
Figure 8
+24VDC
MEANING
Control disabled
Control enabled
Not permitted
Not permitted
and may result in
13