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Phase 2 - Activating muting
As soon as the first muting sensor is interrupted, i.e. the Start 1 signal is LOW, the protective sensor is
bridged - muting is active.
Figure 3.2:
Phase 2 - Muting is activated by the interruption of Start 1.
Phase 3 - Interruption of the protective sensor
While the transport material occupies the first muting sensor, the protective sensor is additionally inter-
rupted. As the system is in the muting state, the safety outputs are not deactivated.
Figure 3.3:
Phase 3 - Protective sensor is interrupted.
Phase 4 - Interruption of Start 2
At the earliest 5 ms after Start 1 has been interrupted, Start 2 is also allowed to be interrupted by the trans-
port material. During this phase, the two muting sensors (i.e. both start signals) as well as the protective
sensor must be occupied (LOW level).
Figure 3.4:
Phase 4 - Continuation of the muting process with occupancy of Start 2 by the pallet.
A maximum time between occupancy of Start 1 and Start 2 is not monitored by the device.
Leuze electronic
Danger zone
Start 1
Danger zone
Start 1
Danger zone
Start 1
MSI 420.TMC-03
Protective sensor
Start 2
Protective sensor
Start 2
Protective sensor
Start 2
7
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