Override - Datasensing SH4 ADVANCED Product Reference Manual

OVERRIDE

Override functions allows to force safety function deactivation whenever it's necessary
to restart the machine despite one or more ESPE beams being intercepted. The aim is
clearing protected area of any working materials blocked ahead of ESPE because of (i.e.)
a cycle anomaly.
Supposing that a pallet is intercepting one or more beams, the conveyor belt can't be
restarted because of ESPE detecting intercepted beams. With Override activation nor-
mal operation is restored.
Necessary condition for override request to be accepted is: ESPE is in OFF state and at
least one muting sensor is intercepted.
When such condition is verified user interface visualizes "Override allowed" with both
red OSSD LEDs for the SH4-XX-XXXX-X models:
Override allowed
or with both red OSSD and blue 1C2 LEDs for the SH4-X-XXXX-X models:
Override allowed
NOTE: Two separate redundant inputs (OVR1 and OVR2) have to be con-
nected through one normally open contact to 24Vdc and one normally open
contact to 0V thus to provide complementary inputs.
ESPE
Figure 58: Override connection
NO
OVERRIDE1
NO
OVERRIDE2
OVERRIDE
24V dc
PRODUCT REFERENCE GUIDE
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