Owner’s Manual
E2010 THYSSENKRUPP ELEVATOR Printed in USA February, 2010
Door Protection-2
MEMCO Elite
Model 640 180/TK
INFRA RED SAFETY CURTAIN FOR LIFTS
S 154 criss-cross beams offer protection up to a height of
1.8m (5’ 10 7/8”approx)
S Diagonal beams-to-close
S Low power consumption
S Microcontroller based TX and RX (optional power supply
box)
S Diagnostic LEDs and timeout software
S 40mm (19/16”) wide profile
S 3m range
S Center or side-opening installations
Introduction
The Memco elite Model 640 safety system provides a
light-curtain of infra-red beams operating between the lift car
doors. Any person or object breaking the beams will trigger
the system and re-open the doors. The dense beam pattern
will pick up even very small objects between the car doors.
The 640 safety system consists of a transmitter detector (TX)
and a receiver detector (RX) mounted on the car doors. The
system will automatically sense the door separation and
adjust itself for optimum performance. No set ting up is
required.
In many installations a separate controlleris unnecessary and
the detectors c an be connected direct to the lift controller or
door operator.
Operation
The 640 light cur tain uses 32 transmit diodes in the TX
detector and 32 receive diodes in the RX detector. The light
curtain u ses a 154-beam pattern when the doors are fully
open (Fig 1). The pattern changes to 94 beams as the doors
close to approximately 600mm a nd maintains 72 beams right
up to closure.
Surface mount technology has led to a great improvement in
the optics allowing diagonal beams to func tion to door
closure. The diodes are manufactured using a technique
which improves both consistency and reliability. The special
lens is used in conjunction with the surface mount diodes to
optimise the system performance.
Figure 5 -MEMCO Elite Model 640 180/TK Beam Pattern
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