Functional Description; Muting Function - Cedes cegard/Max-74 Mode D'emploi

cegard/Max
Main Features of Light Curtain
• Self calibrating, fault tolerant
• Easy installation without alignment

• Muting function

• Very dense surveillance area
• Robust and reliable
• Integrated diagnostics
Applications (page 4)
cegard/Max is ideal for more comfort and improved
safety on automatic elevator doors and other auto-
matic doors. Complete kits for modernization, a
vast range of accessories or special configurations
are available.
cegard/Max must not be used as a protective
device for dangerous machinery nor in explo-
sive atmospheres or radioactive environments

Functional description

Between emitter E and receiver R a high density
protection area is built up with straight and crossed
beams. A built-in calibration feature controls the
power of each individual beam to eliminate any
adjustment, suppress light interference or control
influence from dirt and automatically recognizes the
working mode. The device performs a continuous
self test diagnosis to mute single emitter or receiver
elements. These features give cegard/Max an out-
standing functional reliability. Any interruption of the
protection area by a person or an object will be de-
tected and the output relay will be switched.
Muting function
By setting jumper JP1 the muting function is acti-
vated. Blocked or defective elements are detected.
After appr. 45 seconds the light curtain ignores
these elementes according to following muting
rules:
cegard/Max-74
cegard/Max-114
cegard/Max-154
For safety reasons the blocked or defective ele-
ments may not be situated next to each other. The
protection field can not detect objects within this
area.
However if two elements situated next to each other
are defective or blocked, the output relay will be
switched.
16
max. 1 element
max. 2 elements
max. 2 elements
Installation and Operation Manual
The muting function may be deactivated by remov-
ing JP1 depending on national codes and regula-
tions, i.e. all light beams are used for object detec-
tion.
The installer is fully responsible for complying to
local codes and for correct installation.
Inactive mode
The protective function may be deactivated i.e. for
servicing elevator cars. To deactivate move hand
slowly from top towards bottom. The light curtain
remains deactivated for appr. 10 seconds and the
buzzer beeps.
Installation
Due to the large optical aperture angle and the
automatic calibration feature there is no alignment
needed as long as the edges are within the aperture
angle (page 5, picture
For installation of opto edges please note
(page 5) that,
• both cables exit the same direction
• they are securely fastened
• they must not be bent or be exposed to tension.
• the cable is not forced, stretched or squeezed
• the cable is well fastened and routed
• ensure a cable radius > 80 mm
• avoid soiling of opto edges
• avoid contamination by oil or greasy liquids
• avoid obstruction from door wings, cables etc. in
the protective area
• avoid interference with other infrared sources like
single opto sensors, low energy bulbs, direct sun
light, etc.
Installation of control unit:
• Fix the control unit with 4 screws near the door
drive
• Connect terminal protective earth PE with low
impedance (< 10 Ω) to protective earth of the
power supply.
Installation of mounting kits and accessories
• Please see separate installation instructions
www.cedes.com
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© CEDES/January 2008