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2121331-04-04/19 (Translation of the original operating instructions)
Operating Instructions
Modular Safety Control System MSC
EN
9.4.6. The MUTING function
The muting function provides a temporary, automatic interruption of a safety device to make possible a normal material
flow through a protected opening.
In other words, when the system detects the material and differentiates it from a person (in a potentially hazardous situation),
it bypasses the safety device temporarily to permit the material to pass through the opening.
9.4.7. MUTING operators (max. number = 4)
9.4.7.1. Simultaneous muting (MUTING "Con")
The muting function is activated after the interruption of the sensors
S1 and S2 (the sequence is irrelevant) within the period defined by
the operator of between 2 s and 5 s (or S4 and S3 for material that
is moving in the opposite direction).
The MUTING "Con" operator with "simultaneous" 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.
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.
Figure 178: Simultaneously muting
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 BIDIR (bidirectional) is set, activation is pos-
sible in both directions (from S1&S2 to S3&S4 and from S3&S4 to S1&S2). With UP, activation is possible from S1&S2 to
S3&S4, and with DOWN from S3&S4 to S1&S2.
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 third sensor has been cleared.
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