Controlled Products Systems Group 109837 - Manual (Page 19)

19 FAAC MODEL 844 Slide Gate Operator
6. START-UP
Fig. 40
2
1
FC2
FC1
Fig. 41
FC2
FC1
Fig. 42
6.2. DEFINITION OF OPENING DIRECTION
AND OPERATION OF LIMIT-SWITCH LEDS
Power up the system and set the opening direction on the
board (see Section 5.5.1).
If opening direction is to the RIGHT ( ):
OPENING limit-switch LED = FC1
CLOSING limit-switch LED = FC2
If opening direction is to the LEFT ( ):
OPENING limit-switch LED = FC2
CLOSING limit-switch LED = FC1
6.1. ELECTRIC CONNECTIONS
Make all electrical connections to the board as described in Section
5, including grounding the operator (Fig. 39).
6.3.2. Inductive Limit-Switch
Operator 844 has an inductive limit-switch which detects the travel of
the two steel plates fitted on the top of the rack.
Procedure for correct positioning of the two supplied steel plates:
1. Assemble the limit-switch by centering the plate with respect to
the threaded pins of the support (Fig. 42).
2. Check that the operator is in manual operating mode (see Sec-
tion 8).
3. Manually open the gate to within 3/4 to 2 inches of the mechani-
cal stop limit.
4. Allow the plate to move on the rack in opening direction until the
relevant LED goes off (Figs. 22 and 42); next, move the plate
forward an additional 1 3/4 inches and secure it to the rack by
tightening the screws.
5. Manually close the gate to within 3/4 to 2 inches of the mechani-
cal stop limit.
6. Allow the plate to move on the rack in closing direction until the
relevant LED goes off (Figs. 22 and 42); next, move the plate
forward by an additional 1 3/4 inches and secure it to the rack by
tightening the screws.
Attention: Due to the powerful magnetic fields
produced by the supplied magnets, do not place magnetic
storage devices (credit cards, magnetic tapes, floppy
disks, etc) or sensitive electronic equipment (watches,
CRT monitors, LCD screens, etc.) near the magnets.
Notes on Magnet Positioning
• To ensure correct operation, allow at least 3/4 inch from the me-
chanical stop limit in the gate stop position. Carry out this check
after determining the values of the pre- and post-limit switch
decelerations (see Section 5.5.2.) and after running at least one
complete cycle of the automated system.
• The distance between the limit-switch and magnets must be
from 1/4 to 1/2 inch.
• Magnets should be fitted on the rack and not on the screws.
If necessary, position the magnet at the side of the screw and
adjust decelerations (see Section 5.5.2) in order to obtain the
correct stop point.
6.3. DETERMINING STOP POINTS AT
TRAVEL LIMIT
Operator 844 has a limit sensor switch which, by detecting the transit
of a reference applied to the rack, commands the motor to stop. The
device can be magnetic (Fig. 41) or inductive (Fig. 42).
6.3.1. Magnetic Limit-Switch (MLS)
The MLS limit-switch detects the transit of two magnets fitted on the
side of the rack facing the operator.
Procedure for correct positioning of the two supplied magnets:
1. Check that the operator is in manual mode (see Section 8).
2. Manually open the gate to within 3/4 to 2 inches of the travel limit
mechanical stop.
3. Fit the magnet (without removing the protective film from the
adhesive side) on the side of the rack facing the operator, ali-
gning the upper edges. Slide the magnet on the rack in opening
direction until the relevant LED goes off (Fig. 22 and 41), then
move the magnet forward an additional 1 3/4 inches.
4. Manually close the gate to within 3/4 to 2 inches of the travel limit
mechanical stop.
5. Fit the magnet (without removing the protective film from the
adhesive side) on the side of the rack facing the operator, ali-
gning the upper edges. Slide the magnet on the rack in closing
direction until the relevant LED goes off (Fig. 22 and 41), then
move the magnet forward an additional 1 3/4 inches.
6. Move the gate to its halfway travel point and relock the system
(see Section 9).
7. Find out the desired pre- and post-limit-switch deceleration
values (see Section 5.5.2) and run the automated system for at
least one complete cycle.
8. Check that the gate stops approximately 3/4 to 2 inches from its
mechanical stop point. If necessary, correct the position of the
magnets and check that 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. 41 Ref. 1) and re-position the
magnets with the adhesive strip in contact with the rack (Fig. 41
Ref. 2).