Datalogic SG4 FIELDBUS Series, Инструкция по эксплуатации, Страница: 67 / 136

OVERRIDE FOR SG4-P
INSTRUCTION MANUAL 57
Then, an override request is accepted only if signals at OVERRIDE X inputs follow the
timings shown hereafter.
Override function will automatically end when one of the following conditions is pres-
ent:
• all the Muting sensors are deactivated (in a T-Muting configuration)
• all the Muting sensors are deactivated AND no beams are intercepted (in a L-Mut-
ing configuration)
• the pre-determined time limit has expired
• the requirements for actuation aren't met anymore (for example, one override
input is deactivated)
Override status
SG4-P models provide Override Status digital output on pin 11 of M12 - 12 poles when
used in Muting configuration. This output goes high (24V) when light curtain Override
status is active along with Muting Lamp blinking.
Override mode
It's possible to configure the trigger of override inputs: Level or Edge.
As explained in diagrams below two types of override trigger sequence are accepted on
external inputs:
Level Trigger:
override engaged until both contacts are closed AND at least one Mut-
ing sensor is intercepted.
Figure 34 - Override timings (level trigger)