Project Engineering
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5.2.4.7.4 Muting Enable
The “Muting Enable” function is intended to provide added safety for the user when working with muting. If
the function is activated during parametrization, the “Muting Enable” input is evaluated. The muting can now
be enabled or blocked using the external Muting Enable signal.
If the Muting Enable input is active, muting is initiated with a valid muting sequence. If the Muting Enable
input is inactive, the muting function is blocked and can not be initiated.
Sample process for activating the muting
Condition
Comment
1.
Muting enable is
activated
Function is activated in the
parametrization
Basic requirement for using the function
2.
Muting inactive
“Muting Enable” input is
activated by an external
signal
–
3.
Muting inactive
“Muting Enable” input is
active and MS1 is active
–
4.
Muting active
MS1 and MS2 are active
“Muting Enable” signal may only become inac-
tive if muting becomes active. From this point,
the input is no longer taken into account during
the active muting cycle.
The figure shows a valid signal path as an example.
Muting
active
Input
Muting Enable
Figure 12: Signal path Full Muting Enable
NOTE!
If the “Muting Enable” function is activated in the parametrization, the “Muting Enable” input
must be active at the latest by the start of a valid muting sequence.
