SSM and MSM Series Glass-Surface Mirrors
Corner Mirrors
Max.
Emitter
/ Receiver Range
4
10.8 m (35
ft)
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 17). 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 result in a serious bodily injury or death.
A
Emitter
Receiver
Mirror
45˚ < A < 120˚
Emitter
Receiver
Mirror
Figure 6. Using EZ-SCREEN Type 2 sensors in a
retroreflective
mode
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 Type 2
emitters
and receivers must be installed with their corresponding cabled ends
pointing
in the
same
direction
(for example, both cabled ends facing up). Failure to orient them properly will impair the
performance of the EZ-SCREEN Type 2 System and will result in incomplete guarding, and could result in serious
bodily injury or death.
EZ-SCREEN
®
Type 2 Light Screen
www.bannerengineering.com - Tel: 763.544.3164
17
