E-Stop 1
E-Stop 2
E-Stop N
RDLS-8..D
EZ-SCREEN LS
Bn
Vi
Bk
Wh
RDLS-8..D Pinout
Brown
Ch1a
Orn/Blk
n.c.
Orange
n.c.
White
Ch1b
Black
Ch2b
Blue
n.c.
Gn/Ye
n.c.
Violet
Ch2a
Take precautions to prevent unused wires from
shorting to ground or to other sources of
energy (for example, terminate with wire-nut).
Figure 46. Connecting of E-stop buttons to the last receiver in the cascade
11.5 Interlock Switches in Cascaded Systems
The Cascade input may be used to monitor interlock safety gates or guards. Requirements vary widely for the level of
control reliability or safety category (per ISO 13849-1) in the application of interlocked guards. While Banner Engineering
recommends the highest level of safety in any application, the user is responsible to safely install, operate, and maintain
on page 78
meets or exceeds the requirements for OSHA/ANSI control reliability and Safety Category 4, per ISO 13849-1.
The CSSI input is a two-channel (4-wire) input such that the redundant channels must be in the same state (either open or
closed). The CSSI input can be connected to hard/relay contacts per requirements. The simultaneity between the two
contacts, on opening and closing, is 3 seconds. If simultaneity is not met, the last receiver’s display will flash
. If
simultaneity is not met, to clear the fault condition, close both inputs (for example, close the guard), wait 3 seconds, and
open both channels within 3 seconds, then both contacts can be closed again.
WARNING: Safety Distances and Safe Openings
It must not be possible for personnel to reach any hazard through an opened guard or by reaching over,
under, around, or through any opening in the guard before the hazardous situation has ceased. See ANSI
B11.19 or ISO 14119, ISO 14120 and ISO 13857 for information on determining safety distances and
safe opening sizes for your guarding device.
11.5.1 Interlock Guarding Requirements
The following general requirements and considerations apply to the installation of interlocked gates and guards for the
purpose of safeguarding. Refer to the relevant regulations to be sure to comply with all necessary requirements.
Hazards guarded by the interlocked guard must be prevented from operating until the guard is closed. A Stop command
must be issued to the guarded machine if the guard opens while the hazard is present. Closing the guard must not, by itself,
initiate hazardous motion; a separate procedure must be required to initiate the motion. The safety switches must not be
used as a mechanical or end-of-travel stop.
EZ-SCREEN
®
LS Safety Light Screen
76
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