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Cascaded Systems
Cascading
The GuardShield Safe 4, Type 4 POC is also available in a limited
offering of cascading segments which allow GuardShield Safe 4
transmitters and receivers to be interconnected. This product
configurability allows the GuardShield Safe 4 to protect multiple sides of
a machine or simply adds flexibility when positioning the GuardShield
Safe 4 in various applications.
A maximum of three GuardShield Safe 4 light curtain pairs can be
interconnected with a common pair of OSSDs (not to exceed 255
beams).
Two Segment Cascading GuardShield Safe 4 Systems
Typical configuration of a cascaded GuardShield Safe 4
Figure 23: Cascaded GuardShield Safe 4
Figure 24: "L-shaped" two segment GuardShield Safe 4 cascading systems offer protection
when it is possible to stand between the vertical light curtain and the machine hazard
Three Segment GuardShield Safe 4 Cascading Systems
When the use of corner mirrors is not practical or possible, three-sided
guarding of a machine hazard is possible using cascading GuardShield
Safe 4 light curtains.
R
Figure 25: Top and bottom mounting of 3 GuardShield Safe 4 segments is possible, which will
provide three-sided machine guarding without the use of corner mirrors
Following limitations shall be taken into consideration:
• The protective zone is made of units with 120 mm length
• Ten meter maximum total length for light curtains, extension
modules and connection cables combined
• Maximum of three ILAS may be operated simultaneously
• Only the following extension cable may be used between the light
curtains
It is possible to extend the length of the cable between cascaded segment
pairs, however, it is necessary to use three patchcords to do this. The
standard connection between these special Safe 4 light curtains is a DIN
9 connector. To increase the cable length between cascaded segment
pairs, a DIN 9 to M12 patchcord is required to connect to the Safe 4
pigtail then an M12 to M12 patchcord connects to the first patchcord.
Finally a second M12 to DIN 9 patchcord is required to make the final
connection.
120 (4.72) ±10
50.2 (1.98)
40.5 (1.59)
120 (4.72) ±10
Systems with Separated Controller
Systems with separated controllers are cascaded systems in which one
cascade is without any optical modules. The dead zone of the protective
cascade is minimized this way. The profile length of light curtains
without laser alignment system is 2 x 25 mm shorter.
Figure 26: GuardShield Safe 4 with separated Controller
Original instructions
GuardShield™ Safe 4 Safety Light Curtain User Manual
Patchcord, 8 Pin, 1 Meter, M12 to M12
445L-AC8CPx
(x = 1, 3 or 5 meter)
Patchcord, 8 Pin, Din9/female to M12/
445L-ACDN9M12
45.5 (1.79)
male
Cable
Patchcord, 8 Pin, Din9/male to M12/
445L-109296
female
52.1 (2.05)
29
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