Project Engineering
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5.2.4.6 4-Sensor Linear Muting with Time Monitoring
The 4-sensor linear muting with time monitoring enables an object to be transported into or out of the danger
zone. Two MS are located inside and two MS are located outside 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 is
activated. The contact-based safeguard must therefore be installed directly behind the ESPE to prevent
bypassing.
NOTE!
• The 4-sensor linear muting with time monitoring checks the correct activation sequence of
the MS and the time required.
• Depending on which MS is activated first, the following MS must also be activated within
4 s. (Transport into the danger zone: MS1
MS2; transport out of the danger zone: MS4
MS3)
• The “direction setting” function can also be used to restrict the permissible direction of the
object transport to one direction.
• If the function “Muting end through clearing of the ESPE” is activated, the muting se-
quence ends as soon as the safety field is free again.
• The “Gap suppression” function can increase the availability of the system by accepting
signal interruptions of less than 250 ms on the MS.
For better understanding, the scenario of material movement into the danger zone is outlined below (see
). If the object is to be transported out of the danger zone, the designation MS1 should be replaced
with MS4, MS2 with MS3, etc.
a
b
Danger zone
Figure 10: Arrangement 4-sensor linear muting with time monitoring
