Override - SICK LE20 Instrucciones De Operación

Operating Instructions
LE 20
8 008 685/Q913/2007-05-21
Product description
Fig. 3-3: The muting sensors should detect the load and not the pallet.
a = Pallet s = Material
4 . Since the internal evaluation of the sensor signals is not instan-
taneous, the material must not be detected too closely in front
of the light beams of the photoelectric safety switch. A minimum
distance must be observed (see Fig. 3-5).
Fig. 3-4: Distance to the detection line of the muting sensors
A minimum distance must be provided between the beams of the photoelectric
switch and the detection line of the muting sensors.
a = Material
S = Sender
R = Receiver m = Minimum distance [m] M 1, M 2 = Muting sensors
Calculation of the minimum distance:
m [m] = v [m/s] x 0.125 s
3 . 4 . 3

Override

The override function is used to move the object located in the
muting zone out of the monitoring zone in the event of a muting
error. The protective system can be released even if a light beam
has been broken. To permit this, the muting sensors must issue a
valid muting signal. The override lamp indicates that this function is
available. The override pushbutton must be pressed and then
released again.
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
d = Muting sensor f = Transport plane
v = Belt speed [m/s]
GB
Chapter 3
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