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5.2.3 Use of Corner Mirrors
EZ-SCREEN LPM may be used with one or more corner mirrors. Mirrors are not allowed for applications that would allow
undetected personnel access into the safeguarded area. The use of glass-surface corner mirrors reduces the maximum
specified emitter/receiver separation by approximately 8 percent per mirror, as follows:
Light Screen Maximum Range
Light Screen Series 0 Mirrors 1 Mirror 2 Mirrors 3 Mirrors 4 Mirrors
14 mm EZ-SCREEN
®
(SLS) 6 m (20 ft) 5.6 m (18.4 ft) 5.2 m (17.0 ft) 4.8 m (15.7 ft) 4.4 m (14.5 ft)
30 mm EZ-SCREEN
®
(SLS) 18 m (60 ft) 16.8 m (55 ft) 15.5 m (51 ft) 14.3 m (47 ft) 13.1 m (43 ft)
EZ-SCREEN
®
LP (SLP) 7 m (23 ft) 6.5 m (21.2 ft) 6.0 m (19.5 ft) 5.5 m (18.0 ft) 5.1 m (16.6 ft)
EZ-SCREEN
®
LP Basic (SLPVA) 4 m (13 ft) 3.7 m (12.1 ft) 3.4 m (11.2 ft) 3.1 ft m (10.3 ft) 2.8 m (9.2 ft)
EZ-SCREEN
®
LS (SLL) 12 m (39 ft) 11 m (36 ft) 10.1 m (33 ft) 9.3 m (30.5 ft) 8.6 m (28 ft)
EZ-SCREEN
®
LS Basic (SLLV) 8 m (26.2 ft) 7.4 m (24.3 ft) 6.8 m (22.3 ft) 6.2 m (20.3 ft) 5.7 m (18.7 ft)
EZ-SCREEN
®
Type 2 (LS2) 15 m (50 ft) 13.8 m (45 ft) 12.7 m (42 ft) 11.7 m (38 ft) 10.8 m (35 ft)
See the specific mirror data sheet or
www.bannerengineering.com
for more information.
Mirrors are typically used with safety light screens to guard multiple sides of a hazardous area. If the safety light screen is
muted, the safeguarding function is suspended on all sides. It must not be possible for an individual to enter the guarded
area without being detected and a stop command issued to the machine control. Supplemental safeguarding, such as hard-
guards, is normally provided by an additional device(s) that remains active while the Primary Safeguard is muted. Therefore,
mirrors are typically not allowed for muting applications.
WARNING:
• Do not safeguard multiple areas with mirrors or multiple sensing fields if personnel can enter the
hazardous area while the system is muted and not be detected
• Entering the hazardous area without being detected is dangerous and could result in serious
injury or death.
• Verify all areas are guarded and a stop command is issued to the guarded machine when
someone enters the hazardous area.
If mirrors are used, the difference between the angle of incidence from the emitter to the mirror and from the mirror to the
receiver must be between 45° and 120° (see
Figure 7
(p. 26)). If placed at a sharper angle, an object in the light screen
may deflect beam(s) to the receiver, preventing the object from being detected, also know as false proxing. Angles greater
than 120° result in difficult alignment and possible optical short circuits.
WARNING:
• Retroreflective Mode Installation
• Failure to follow these instructions may create unreliable sensing and may result in serious injury
or death.
• Do not install emitters and receivers in retroreflective mode with less than a 45° angle of
incidence. Install emitters and receivers at an appropriate angle.
EZ-SCREEN Low-Profile System with Integral Muting
www.bannerengineering.com - Tel: + 1 888 373 6767 25