Project Engineering
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5.2.4.2 Muting Visualization
• The receivers have an integrated illuminated cap (see
“5.2.6.4 Integrated Indicator Lamp” on page 102
which shows the muting status.
• A continuous white light signals an active muting sequence.
• It is also possible to connect an external muting lamp on the signal output.
5.2.4.3 Cross Muting
Cross muting enables an object to be transported in or out of the danger zone.
For this, two muting sensors are arranged so that their beams cross. The
point of intersection is within the
danger zone.
The distances a and b represent the distances between the muting object and a separating safeguard
(fence). They must be designed so that no one can enter the danger zone unnoticed while the muting object
is passing through the ESPE.
A sample arrangement with retro-reflex sensors is shown in
As soon as MS1 and MS2 have been activated, the muting function is active. The actuation sequence of the
sensors is unimportant here. MS1 and MS2 must be activated by a muting object within 4 s. They may also
switch at the same time.
Danger zone
Figure 4: Arrangement cross-muting with retro-reflex sensors