ESPE (optoelectronic safety light curtain or optoelectronic safety laser scanner)
Using the ESPE function block the input status
of an optoelectronic safety light curtain (or
safety light scanner) is checked. If the area
protected by the light curtain is occupied (out-
puts on the light curtain FALSE), the OUTPUT
output is "0" (FALSE). Conversely, if this area is
not occupied and the outputs on the light cur-
tain are "1" (TRUE), the OUTPUT output is "1"
(TRUE).
Parameters
Manual Reset: If selected, a reset can be requested each time the area protected by the
safety light curtain is occupied. Otherwise the activation of the output will correspond di-
rectly to the input conditions.
There are two types of reset: "Manual" and "Monitored". On the selection of the manual
reset, the system only checks the signal transition from 0 to 1. With the monitored reset
the double transition from 0 to 1 and then back to 0 is checked.
WARNING: If Manual Reset is selected, the next Input must be used. Example: If In-
put1 and Input2 are used for the function block, Input3 must be used for the reset
input.
The OUT TEST signals cannot be used for the static safety output ESPE, as the test signals
are generated by the ESPE.
StartUp Test: If selected, the test is undertaken on switching on the safety light curtain.
This test is undertaken by occupying and clearing the area protected by the safety light
curtain to carry out one complete function test and to activate the output. This test is on-
ly requested on starting the machine (on switching on the module).
Filter (ms): This parameter makes it possible to filter the signals that are received from
the safety light curtain. The filter can be set to between 3 and 250 ms and removes any
contact bounce. The time set for the filter affects the calculation of the total response
time of the module.
With Simultaneity: If selected, the simultaneous switching of the signals received from
the safety light curtain is checked.
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