Table 5: SSM and MSM Series Glass-Surface Mirrors—Maximum Emitter and Receiver Separation
Number of Corner Mirrors
Max. Emitter / Receiver Separation
1
8.0 m (26.2 ft)
2
7.4 m (24.3 ft)
3
6.8 m (22.3 ft)
4
6.2 m (20.3 ft)
See the specific mirror data sheet or
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
on page 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: Avoid Retroreflective Installation
Do not install emitters and receivers in "retroreflective" mode, with less than a 45° angle of incidence, as
shown. Sensing may be unreliable in this configuration and could result in a serious injury or death.
A
Emitter
Receiver
Mirror
45˚ < A < 120˚
Emitter
Receiver
Mirror
Figure 11. Using EZ-SCREEN LS Basic sensors in a retroreflective mode
5.1.7 Emitter and Receiver Orientation
The emitter and receiver must be mounted parallel to each other and aligned in a common plane, with both machine
interface cable ends pointing in the same direction. Never mount the emitter with its machine interface cable end oriented in
the opposite direction of the cable end of the receiver. If this occurs, voids in the light screen may allow objects or
personnel to pass through the defined area undetected.
The emitter and receiver may be oriented in a vertical or horizontal plane, or at any angle between horizontal and vertical, as
long as they are parallel to each other and their cable ends point in the same direction. Verify that the light screen
completely covers all access to the hazard point that is not already protected by hard (fixed) guarding or other supplemental
guarding.
WARNING: Proper Orientation of System Emitters and Receivers
EZ-SCREEN LS Basic emitters and receivers must be installed with their corresponding cabled ends
pointing in the same direction (for example, both cabled ends facing down). Failure to orient the EZ-
SCREEN LS Basic emitters and receivers properly will impair the performance of the EZ-SCREEN LS
Basic System and will result in incomplete guarding, which could result in serious injury or death.
EZ-SCREEN
®
LS Basic Safety Light Screen
26
www.bannerengineering.com - Tel: 763.544.3164
