SG4E Full Rev01.pdf - Datasensor

FUNCTIONS
7
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. 48 – 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.
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)
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