Brochure

29
Patent angemeldet
+50°C
-20°C
IP65
PLC
www.werma.com
Signal Towers
●
modular
Kombi
SIGN 71
Patent pending
TECHNICAL DIAGRAMS:
see page 277
ADDITIONAL INFORMATION:
* EVS = Enhanced Visibility System
Further informationen can be found in the chapter ”Tech-Talk“ on page 326.
EVS – Attention-grabbing light effect on neurobiological basis
The flickering of neon lamps and comparable light effects are highly effective at attra-
ting our attention. The neurobiological basis of this phenomenon is explained by a uni-
versity scientist as follows: Light signals are processed in the human brain, not directly
in the eye.
In order to be consciously registered there, incoming stimuli first have to pass through a
form of filter. This filter has a “protective” function. During sleep it reduces disturbing
stimuli to a minimum and assists in “overlooking” regular or continuous signals.
EVS – Flickering light without acclimatisation effect
On the basis of this understanding, WERMA’s R+D department set out to find a flickering
light with a high degree of effectivity in attracting attention. In a multistage laboratory
experiment 20 test candidates were asked to judge a series of different light signals and
to determine the most eye-catching light. The result of the study was a stochastic flicke-
ring light with optimal attention-grabbing characteristics: EVS – Enhanced Visibility
System! The light effect of this system is completely new and distinguishes it from all
previous systems.
Voltage 24 V
red 644 140 55
green 644 240 55
yellow 644 340 55
clear 644 440 55
blue 644 540 55
ORDER SPECIFICATIONS:
Dimensions (Ø x Height): 70 mm x 65 mm
Lens: PC, transparent
Seal: Pre-mounted with each element
Number of modules
possible: 5, with 2-sided bracket max. 10
Current consumption: red / yellow: 200 mA
green / blue / clear: 150 mA
TECHNICAL SPECIFICATIONS:
644
LED EVS* Element for KombiSIGN 71
• Attention-grabbing flickering light
• Developed on a neurobiological
basis
• Extremely powerful signal effect
• Random sequence of light signals
prevents acclimatisation effect
• For signalling extremely hazardous
situations and the need for
immediate action
Integrated into the Kombi
SIGN
Signal Towers, the new LED EVS
Element generates a highly
attention-grabbing signal
Life dur
a
tion
up
to
50,000 h
r
s
The way in which the brain
processes visual stimuli formed
the basis for the development of
the new EVS technology
Optic chiasm
Brain
Right eye
Optic nerve
Left eye
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