Operating Instructions
Modular Safety Control System MSC
148
(Translation of the original operating instructions) 2121331-04-04/19
9.4.7.3. "Sequential" MUTING
The muting function is activated after the sequential interruption of
the sensors S1 and S2, followed by sensors S3 and S4 (without any
time limit). If the pallet moves in the opposite direction, the correct
sequence is: S4, S3, S2, S1.
The MUTING operator with "sequential" logic makes it possible to mute
the input signal via the sensor inputs S1, S2, S3 and S4.
¨
Prerequisite: The muting cycle can only start if all sensors S1 – S4
are "0" (FALSE) and the INPUT input is "1" (TRUE).
Parameter
Timeout (s): Sets the time within which the muting cycle is to be ended
from 10 s to infinite. If the cycle is not complete at the end of this
time, the muting is interrupted immediately.
With Enable: If selected, it is possible to enable or not enable the
muting function. Otherwise the muting function is always enabled.
Figure 180: "Sequential" MUTING
There are two enable modes: "Enable/Disable" and "Enable Only". On the selection of "Enable/Disable" the muting cycle
cannot be started if "Enable" is set to "1" (TRUE) or "0" (FALSE), instead it is only activated with a rising edge. To deactivate
the muting, set "Enable" to "0" (FALSE). In this mode the muting is deactivated on a falling edge, irrespective of the state.
On the selection of "Enable Only" the muting cannot be deactivated. "Enable" must be set to "0" (FALSE) to make possible a
new rising edge for the next muting cycle.
Direction: The sequence in which the sensors are activated can be defined. If BIDIRECTIONAL is set, activation is possible
in both directions (from S1 to S4 and from S4 to S1). With UP, activation is possible from S1 to S4 and with DOWN, from
S4 to S1.
Muting Closing: There are two types: CURTAIN and SENSOR. If CURTAIN is selected, the muting is ended on a rising input
signal. With SENSOR the muting is ended when the penultimate sensor has been cleared.
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