Datalogic SG4 FIELDBUS Series, Инструкция по эксплуатации, Страница: 60 / 136

FUNCTIONS
50 SG4 EXTENDED
Typical Muting application and safety light curtain connection
The figure shows a typical Muting application: a protection installed on a conveyor
should allow the pack passing-by but not the worker.
The ESPE temporarily suspends its safety function on a correct activation sequence of
A1, B1, A2, B2 sensors.
These sensors can be optical, mechanical, proximity sensors etc., with high output PNP
when the object is detected.
Figure 19 - Typical Muting Application
Muting direction
The ESPE can be used with both bidirectional (T type, four sensors) and monodirectional
(L type, two sensors) Muting.
Bidirectional Muting can be used in those applications in which the packs can move in
both directions and monodirectional Muting can be used in those applications in which
the packs move in one direction only.
In BCM the maximum activation delay between MUTING1 and MUTING2 (T12max) is 4
sec.
Muting T
In T type operations the device enters Muting function if the input MUTING2 goes high
within a fixed T12max after the rise of MUTING1 (or vice versa).
The Muting function ends as soon as the signal on MUTING1 or MUTING2 goes low.
A further custom Muting Exit delay (Tdelay) may be set by the user in a 0-1000 ms
range.
For SG4-…-OO-N models, Tdelay is fixed at 1000 ms when activated in BCM configura-
tion.
The maximum activation delay between MUTING1 and MUTING2 (or vice versa) can be
set by the user from a minimum of 1 sec to a maximum of 16 sec (T12max).