Pilz PSEN op4F/H-A Series Operating Manual page 48

OPERATING MANUAL PSEN op4F/H-A series
L-Muting
With L-muting, the light curtain is muted if the input signals switch to 24 VDC in accordance
with a certain sequence: MUTING1 must be activated first; only then can MUTING2 be
activated.
If MUTING2 should activate before MUTING1, the device will not switch to muting mode;
"T12" represents the activation delay between MUTING1 and MUTING2, which users can
select via ACM.
The muting function ends once the time has elapsed, which corresponds to a multiple of the
activation delay between the two sensors (this time corresponds to m * T12). The value "m"
(multiplier T12) must be selected by the user. With BCM, 2 is the default value.
In the ACM configuration, users can set the maximum activation delay between MUTING1
and MUTING2 (or vice versa) from a minimum of 1 second to a maximum of 16 seconds
(T12max). Once this time has elapsed, if users wish to switch to muting status they will need
to deactivate the muting input and start the sequence again.
Fig. 44 – L-muting timings
The sensor labelled A is positioned furthest away from the light curtain, which is why its
beam is recorded first. With reference to the diagram below and in consideration of the fact
that the package only passes from right to left, sensor B cannot be recorded first. If this
should happen, the light curtain is not muted.
"V" indicates a constant velocity. As a result, "d1" can be calculated in accordance with the
following formula:
d1 [cm] = V [m/s] * T12 [s] * 100
Fig. 45 – L-Muting connection
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