Datalogic SG4 FIELDBUS Series, Инструкция по эксплуатации, Страница: 73 / 136

OVERRIDE FOR SG4-N
INSTRUCTION MANUAL 63
Override at run time
• One or both muting inputs must be active.
• Press and release the RESET button 3 times < 1 s. The OSSD outputs will be acti-
vated for more than 2 s and 600 s max.
• The override function is now activated and the external muting lamp flashes.
Figure 46 - Runtime Override activation and timings
Blanking (SG4-P)
Blanking is an auxiliary function of safety light curtains for which the introduction of an
opaque object inside parts of the light curtain's controlled area is allowed without stop-
ping the normal functioning of the machine. Blanking is only possible in the presence of
determined safety conditions and in accordance with a configurable operating logic.
The blanking function is therefore particularly useful when light curtain's controlled
area must be inevitably intercepted by the material being worked or by a fixed or
mobile part of the machine.
In practice, it is possible to keep light curtain's safety outputs in a normal operation con-
dition and the machine working, even if a pre-determined number of beams within the
controlled area is being intercepted.
The user can even connect a lamp (whose characteristics are reported in "
Technical
Data" on page 83
) to indicate that a blanking function is active.
The use of the lamp is not mandatory for a light curtain in blanking mode.
The lamp begins to blink in the following cases:
- the light curtain is in any fixed blanking mode and the object is removed from the
blanked zone
- the light curtain is in floating mode with total surveillance and the dimension of the
taught object changes or the object is removed from the blanked zone.
CAUTION
If the AOPD is in Automatic Restart, the OSSD outputs remain on after the
end of the override.