Release 7/2009 Ver. 1.0
Technical Manual: GS-120 Light Curtain Systems
TAPESWITCH CORPORATION
Phone: 631-630-0442
100 Schmitt Boulevard
33
Fax: 631-630-0454
Farmingdale, New York 11735
www.tapeswitch.com
3.3.4.3 SSR Version
The interfacing of a GS-120 light curtain to a machine
can be achieved by means of an interface unit such as
the Pilz PNOZ 8. The circuit diagram for the PNOZ 8
and the typical connections to the GS-120 light curtain
and the machine are shown in
Figure 39
below.
IMPORTANT
A number of manufacturers produce units containing
circuits of this type. Care should be taken to ensure that
the inputs of these units can accept the volt-free outputs
of the light curtain, and that the outputs of the light
curtain are wired with one channel "pull up" and one
channel "pull down" so as to maintain the failure mode
integrity.
Figure 39 – SSR Version
