FAAC 541 3ph, Manual

Page: 7 / 12

6



FC2
FC1
DIR2
DIR1

5.6 ADJUSTMENT OF LIMIT-SWITCH UNIT
The procedure for adjusting the closing and opening limit-
switch is as follows:
Completely close the industrial sectional door.
Using trimmer 1, with the arrow facing down (closing), turn
clockwise to + or anti-clockwise to - until
the closing limit-switch is activated.
Then set the industrial sectional door in opening position.
Using trimmer 1, with the arrow facing up (opening), turn
clockwise to + or anti-clockwise to - until
the opening limit-switch is activated (see fig. 11).
Note for fine adjustment: the “+” symbol indicates backing
away of the activator from the microswitch and therefore
a longer stroke; the “-” symbol, on the contrary, indicates its
approach and consequently a shorter stroke.
Final check of the open and closed positions.
Manually move the door in open and close position.
Ensure that the operator actually reaches the desired positions
when opening and closing. If this does not occur, correct the
limit-switch positions using trimmer 1.
If used with 578D equipment, you can correct the closing stop
point also by varying the post-end of travel deceleration.
Fig. 11

Limit-switch trimmer
up and down adjusting

microswitch limit-switch up and down
5.7 IDENTIFYING ROTATION DIRECTION (operator with 844T
equipment)
Figure 12 shows rotation directions Dir1 and Dir2. Motion in Dir1 direction is
stopped by FC1 and motion in Dir2 direction by FC2. Consequently, if, for
example, Dir2 is the rotation direction causing the door to close, FC2 deter -
mines the stop closing point and FC1 determines the opening stop point.
The OPEN command is normally associated with Dir1 motion - consult the
equipment instructions if the rotation directions have to be reversed.
The stop spring of the ring-nuts activating the limit-switches, is kept lifted up
by the square - the latter must not be removed until the door stop points
are adjusted.
Fig. 12