The muting function
The muting function makes possible a temporary, automatic interruption of a safety de-
vice 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.
MUTING OPERATORS (max. number = 4)
MUTING "Con" (simultaneous MUTING)
The muting function is activated after the in-
terruption of the sensors S1 and S2 (the se-
quence is irrelevant) within the period de-
fined by the user of between 2s and 5s (or
S4 and S3 for material that is moving in the
opposite direction).
The MUTING "Con" operator with "simultane-
ous" logic makes it possible to mute the in-
put signal via the sensor inputs S1, S2, S3
and S4.
Prerequisite: The muting cycle can only
start if all sensor inputs S1 - S4 are "0"
(FALSE) and the INPUT input is "1" (TRUE).
Parameters
Timeout (s): Sets the time within which the muting cycle is to be ended from 10 s to infi-
nite. If the cycle is not complete at the end of this time, the muting is interrupted imme-
diately.
With Enable: If selected, it is possible to enable or not enable the muting function. Other-
wise the muting function is always enabled.
There are two enable modes: „Enable/Disable“ and „Enable Only“. On the selection of „En-
able/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 "Ena-
ble" 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 (bidi-
rectional) is set, activation is possible 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.
Selection CURTAIN
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