During the operation with slow speed traverse information, the upper receiver element (E1) are only
muted if a +24 V signal is given to KAST. This signal is provided by a traverse measuring system (e.g.
Fiessler AMS, or NC) which indicates that the traverse has been actually covered. By this, the upper
receiver element remain activated as long as possible even in the case of a very low slow speed, and
intermediate stops during slow speed. By this, even in slow speed range, protection by the AKAS® is
provided until the introduction of the operator`s fingers between bending punch and sheet metal is made
impossible. The protection of receiver E1 remains thus independent of time up to a closing movement at
slow speed of 5mm. Connection: see wiring diagram 10/S.35.
AKAS® dynamically monitors the valve position signals, i.e. the individual states of the valve position
signals must change within a certain time. The basic tolerances for the switching-over of the valve posi-
tion monitors from stop state into closing movement and from fast speed movement into slow speed mo-
vement or vice-versa can be enhanced by additional 300 ms.
The basic tolerances have the following values:
Switching-over from stopped condition into closing movement after the enabling of the OSSDs:
300 ms, (only with operating mode "Monitored EDM"
Switching-over into the slow speed condition when the start is within the range of the safety point
(SP = + 24V):
100 ms after from the detection of the closing movement consition by the EDM,
i.e. 100 ms after the enabling of the OSSDs during operating mode "without EDM".
Switching-over into the fast speed condition when the start is outside the safety point (when SP = 0):
100 ms after the detection of the closing movement condition by the EDM, i.e. 100 ms after enabling of
the OSSDs during operating mode "without EDM".
Switching-over into the slow speed condition, start with request for slow speed (200 ms after SGA = 0
has been sent to NC ):
70 ms after the detection of the closing movement conditin by the EDM, i.e. 70 ms after the enabling of
the OSSDs during operating mode "without EDM.".
8. slow speed traverse
information
9. selectable switch-over
time tolerance of the valve
position monitors
Electrical connections - Description / Wiring diagrams
6
-with integrated safety functions
Doku Nr. 1379 Stand 27.1.2017 /Aui
wiring diagram 10/p.35
connection with slow speed traverse nformation
slow speed traverse
information
box bending
selector
FIESSLER
E L E K T R O N I K
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