Technical data

ADMIRAL
8540484 • 28th January 2013 • Rev.10 13
Warnings regarding the connection cables
 For connections over 50 m long, use cables with a cross-section area of 1 mm
2
.
 The power supply to the barrier should be kept separate from that to other electric power
equipment (electric motors, inverters, frequency converters) or other sources of disturbance.
 Connect the Emitter and the Receiver to the ground outlet.
 The connection cables must follow a different route to that of the other power cables.
MULTIPLE SYSTEMS
When more than one ADMIRAL system is used, precautions must be taken to avoid optical
interference between them: install units so that the beam emitted by the Emitter of one
system can only be received by the relative Receiver.
Figure 11 illustrates some examples of correct positioning when two photoelectric systems
are installed. Incorrect positioning could generate interference, and may result in
malfunctioning.
Figure 11
DISTANCE BETWEEN REFLECTING SURFACES
The presence of reflecting surfaces in proximity of the photoelectric barrier may generate
spurious reflections that prevent monitoring. With reference to Figure 12, object A is not
detected because surface S reflects the beam and closes the optical path between the
Emitter and Receiver.
A minimum distance d must therefore be maintained between any reflecting surfaces and
the protected area. The minimum distance d must be calculated according to the distance l
between the Emitter and the Receiver, considering that the angle of projection and
reception is 4°.
Figure 12
Figure 13 illustrates the values for the minimum distance d that must be maintained when the
distance l between the Emitter and Receiver is changed.
Systems installed alongside each other: A
Installation of two adjacent Emitters
Overlapping systems: B
L-shaped installation: C
Crossed positioning of Emitters and receivers