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7.8 OVERRIDE
Override function allows the user to force safety function deactivation whenever it’s necessary to restart the
machine despite one or more ESPE beams are intercepted.
The aim is clearing protected area of any working materials blocked ahead of ESPE because of (i.e.) a cycle
anomaly.
Override redundant inputs have to be connected to a 24VDC normally-open contact and to a GND normally-open
contact.
As the pertaining requirements request ESPE is equipped with two Override activation inputs: OVERRIDE1 and
OVERRIDE2 (respectively, pin 4 of the M12-12 poles connector and pin 9 of the M12-12 poles connector
– RX).
Fig 66 - Override connection
Necessary condition for override request to be accepted is: ESPE in SAFE state and at least one Muting sensor
intercepted.
When such condition is verified user interface visualizes “override attention status” with both red OSSD led and
alignment leds blinking.
Fig 67 - Override attention status
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 present:
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-Muting configuration)
the pre-determined time limit has expired
the requirements for actuation aren’t met anymore (for example, one override input is deactivated)