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OVERRIDE FOR SG4-N
INSTRUCTION MANUAL 65
In Fixed Blanking the beams of the blanked zone have to remain intercepted, otherwise
the light curtain goes in SAFE state.
The Tolerance function can be activated by keeping pressed at startup the 24VDC nor-
mally-open contact on Tolerance signal (pin 9 of M12-12 poles - RX). With Tolerance
active the object can move 1 beam above or below the blanking zone. If object moves
more than 1 beam out of the blanking zone ESPE locks-out in Blanking Tolerance Fault.
Tolerance function is useful if there is the possibility that the object can have little
movements from its initial position.
If the light curtain is switched off the Tolerance is lost and a new Tolerance operation
(described here above) is necessary.
With Tolerance active at least two not blanked beams must separate two blanking
zones.
Teach-In Configuration is kept on both power disconnection and ESPE Reset, till next
Teach-In.
The user can erase the Teach-In Configuration by making a new Teach-in operation with
the controlled area free from objects.
On a Blanking Faults Teach-in configuration gets erased after Reset.
If the user changes configuration from blanking to Muting and then blanking again,
every possible Teach-in zone stored at the beginning is cancelled.
Fixed Blanking can be combined with floating blanking; at least one sync beam must be
free.
Fixed Blanking with increased tolerance
This is a fixed blanking with the tolerance only on one side of the blanking zone, so the
user has to choose a “tolerance top” or a “tolerance bottom”.
This function is useful for conveyors (that use fixed blanking) with goods moving on
them (with a dimension within the tolerance).
Only fixed blanking zones can be set on the side of the tolerance; on the other side fixed
blanking or floating blanking with total surveillance zones are allowed.
Only one zone can be set as fixed blanking with increased tolerance.
This function can be set only by means of ACM.
NOTE
Tolerance affects effective ESPE resolution.
Содержание SG4 FIELDBUS Series
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