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PSR-TRISAFE-S
4-8
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MutingPar_2Sensor The MutingPar_2Sensor safe functional block evaluates the
signals of two muting sensors and one optoelectronic
protective device (e.g., light grid) in an application for parallel
muting using two sensors and sets the enable signal at output
OUT.
This function can be used to temporarily deactivate (or
"mute") protective equipment in the form of a light grid,
for example, in order to allow an object which has been
identified by the muting sensors as permissible (for the muting
operation) to pass through on an assembly conveyor.
However, if the light grid is interrupted by a worker's hand, for
example, output OUT is set to FALSE to disable the hazard,
as the protective equipment had not been previously "muted".
MutingPar The MutingPar safe function block evaluates the signals of
four muting sensors and one item of optoelectronic safety
equipment (a light grid, for example) in an application for
parallel muting with four sensors. It also switches the enable
signal at the OUT output.
This function can be used to temporarily deactivate (or
"mute") safety equipment in the form of a light grid, for
example, in order to allow an object which has been identified
by the muting sensors as permissible (for the muting
operation) to pass through on an assembly conveyor.
By contrast, if the light grid is interrupted by a worker's hand,
for example, the OUT output switches to FALSE to disable the
hazard, as the safety equipment had not been previously
"muted".
The maximum allowable time for the muting operation is mon-
itored using the four muting sensors.
MutingSeq The MutingSeq safe function block evaluates the signals of
four muting sensors and one item of optoelectronic safety
equipment (a light grid, for example) in an application for
sequential muting with four sensors. It also switches the
enable signal at the OUT output.
This function can be used to temporarily deactivate (or
"mute") safety equipment in the form of a light grid, for
example, in order to allow an object which has been identified
by the muting sensors as permissible (for the muting
operation) to pass through on an assembly conveyor.
By contrast, if the light grid is interrupted by a worker's hand,
for example, the OUT output switches to FALSE to disable the
hazard, as the safety equipment had not been previously
"muted".
The maximum allowable time for the muting operation is
monitored using the four muting sensors.
Table 4-1 Safe functional blocks (Fortsetzung)
Name
Icon in editor
Short description