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16
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AT86M/T-AT88-AT90
English
SLIDING GATES
FixIng the plates and the Ramps for limit switch
2.5
The actuator has a bi-directional electromechanical limit
switch with a spring rod. The limit switch is tripped by two
metal "ramps" that must be fi tted on the rack in such a way
as to engage the limit switch rod when the gate is near the
fully open and fully closed positions.
The
•
ramps must be secured by screws on the relevant
plates (to be welded on the rack) with adjusting slots.
Warning
!
To avoid crushing risk, do not use the mechanical
gate stops as a gate stroke limit. Fix the plates so that
between the limit switch stops and the mechanical
stops will always remain the safety margin required
by current Safety Regulations.
NOTE: to facilitate the installation and adjustment of the limit
switch actionings, the operator must be released (see Par.
Emergency operations).
Move the gate to the
•
CLOSE position (5 cm from the
mechanical stop) to place the fi rst ramp in a manner as to
trip the fi rst limit switch (
Fig.6-ref.1
), then fi x it on the rack.
Move the gate to the desired
•
OPEN position (respecting
the safety margin from the mechanical end stop). Position
the second ramp in a manner as to trip the fi rst limit switch
(
Fig.6-ref.2
), then fi x it on the rack.
Move the gate to an
•
intermediate position (neither limit
switch must be engaged) and re-lock the actuator. Slide
the gate a little in one direction until you hear a coupling
click.
Ramps for limit switch actioning
fi g. 6 -
LIMIT
SWITCH
ROD
ACTIONING
OF
LIMIT
SWITCH
HEXAGONAL
SCREW
M
8
X
16
UNI
5737
PLATE
WITH
SLOTTED
HOLE
PLATE
WITH
SLOTTED
HOLE
GA
TE
RACK
PINION
ACTIONING
OF
LIMIT
SWITCH
RACK
SLOTTED
HOLE
RAMP
SLOT
FOR
ADJUSTING
THE
RAMP
POSITION
SLOT
FOR
ADJUSTING
THE
RAMP
POSITION
RAMP
GEAR
MOTOR
REF
.
1
LIMIT
SWITCH
ACTIONING
IN
CLOSING
REF
.
2
LIMIT
SWITCH
ACTIONING
IN
OPENING
WARNING
:
THE
LIMIT
SWITCH
ROD
MUST
BE
POSITIONED
IN
WORKING
POSITION
SUPPLIED
POSITION
WORKING
POSITION
