Muting - Datasensing SH4 STANDARD MUTING Product Reference Manual

MUTING

Muting function allows automatic deactivation of the safety function on the whole or
part of protected height in order to carry out definite cyclical operations without block-
ing machine work.
As the pertaining safety requirements demand, ESPE is equipped with two muting acti-
vation inputs.
The Muting sensors must be able to recognize the passing material (pallets, vehicles, ...)
according to material's length and speed.
In case of different transport speeds in the Muting area, it is necessary to consider their
effect on the total Muting duration.
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Figure 33: L-shaped version
with integrated Muting
sensors for unidirectional
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The Muting function excludes the light curtain during functioning, maintaining
active the OSSDs outputs, according to particular operating requirements (see fig-
ures below)
Muting
The safety light curtain is equipped with two inputs (MUTING1 and MUTING2) for
the activation of this function, according to the current Standards.
This function is particularly suitable when an object, but not a person, has to pass
through the dangerous area, under certain conditions.
It is important to remember that the Muting function represents a forced condi-
tion of the system and therefore has to be used with the necessary precautions.
If MUTING activation inputs are activated by two Muting sensors or actuators,
these should be correctly connected and positioned in order to avoid undesired
Muting or potentially dangerous conditions for the operator.
MUTING1 and MUTING2 can't be activated simultaneously.
State of Muting is signaled by an optional external Muting Lamp and by modules
status LEDs on the user interface. When the Muting function is ON the LAMP and
the LEDs begin to blink.
If both first and last beams are intercepted by the passing material the light cur-
tain recovery time may be longer.
WARNING: WARNING: Select carefully the configuration, as a wrong config-
uration can cause the incorrect functioning of the Muting function and a
reduction of the safety level.
For correct use of Muting, please refer to the relevant reference standards.
The Muting sensors must be positioned in such a way that the activation of
the Muting function is not possible with the accidental passing of a person.
Particular attention must be paid to the use of the one-way L-Muting mode:
the external Muting sensors or the SH-L-ARMS Muting arms must be posi-
tioned so as to allow only the passage of material coming out of the dan-
gerous area protected by the light curtain.
Figure 34: T-shaped version
with integrated Muting
sensors for bidirectional
Muting
MUTING
Figure 35: Linear version
with external Muting
sensors
PRODUCT REFERENCE GUIDE
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