16
6.
START-UP
6.1.
ELECTRIC CONNECTIONS
Make all the electric connections on the board as shown in
chapter 5, including earthing the operator (Fig. 24).
The 844 operator is equipped with a limit sensor (MLS) which
detects the transit of the two magnets fitted on the side of the
rack facing the operator (fig. 25).
Procedure for correct positioning of the two supplied magnets:
1)
Check if the operator is in manual mode (see chapter 8).
2)
Manually take the gate to opening position, leaving 2 -
5 cm from the mechanical travel stop.
3)
Fit the magnet (without removing the protective film from
the adhesive side) on the face of the rack facing the
operator, aligning the upper edges. Slide the magnet on
the rack in opening direction until the limit sensor is
activated, checking this on the unit. Then take the
magnet forward another 45mm.
4)
Manually take the gate to closing position, leaving 2 - 5
cm from the mechanical travel stop.
5)
Fit the magnet (without removing the protective film from
the adhesive side) on the face of the rack facing the
operator, aligning the upper edges. Slide the magnet on
the rack in closing direction until the limit sensor is activated,
checking this on the unit. Then take the magnet forward
about another 45mm.
6)
Take the gate to its halfway travel point and relock the
system (see chapter 9).
7)
Fix the required deceleration values, consulting the unit’s
instructions and run the automated system for at least one
complete cycle.
8)
Check if the gate stops at about 2-5 cm from the
mechanical travel stop. If necessary, correct the position
of the magnets and check if the stop point is correct.
9)
Mark the position of the magnets on the rack, and remove
them.
10)
Clean the rack on its fitting points, remove the film on the
adhesive parts of the magnets (fig.25 ref. 1) and re-
position the magnets with the adhesive strip in contact
with the rack (fig.25 ref. 2).
11)
The distance between the limit sensor and the magnets
must be from 5 to 12 mm.
6.2.
ADJUSTMENT OF MLS LIMIT SENSOR
Fig. 25
12)
The magnets must be fitted on the rack but never on the
securing screws. If necessary, fit the magnet in contact
with the screw and adjust the decelerations to obtain the
correct stop point, as shown in the instruction for the unit.
Attention: due to their powerful magnetic field, the supplied
magnets can damage magnetic band components (credit cards,
magnetic tapes, floppy disks, etc) and electronic and mechanical
equipment (e.g. watches, LCD screens). We advise you not to
bring them near to objects that could be damaged if 'immersed'
in a magnetic field.
Fig. 24
