45
746 E R
31
732099 - Rev.D
13
6
(
+
)
(
–
)
Tr
ansla
tion of the original instruc
tions
ENGLISH
8.4
ADJUSTING THE ANTI-CRUSHING SYSTEM
The anti-crushing system is realised by a combination of the limitation
of static force exerted by the operator in the event of impact and the
reverse movement following the detection of the obstacle.
We suggest:
-
start by setting the electronic force to the maximum (function
F O
in Basic Programming)
-
limit the static force to a value lower than 150 N
-
set the sensitivity of the obstacle detection system so that ob-
stacles are not detected by mistake
-
make sure that the anti-crushing system has been adjusted
correctly by using an impact force tester in accordance with
standard EN 12453
Refine the adjustments if necessary. Reduce the electronic force, if
necessary: function
F 0
in basic programming.
LIMITING THE STATIC FORCE
The static force is limited by adjusting the mechanical clutch.
F
The clutch must be adjusted with the power supply disconnected.
!
The 746 E R is supplied with the clutch adjusted for maximum thrust force.
1. Turn off the power supply and remove the protective cover from the
board.
2. Hold the drive shaft in position using a spanner and adjust the screw
of the clutch using a screwdriver (
45
):
(+)
turn clockwise to increase the force
(
–)
turn anti-clockwise to decrease the force
3. Put back the protective cover on the board and turn the power back
on.
OBSTACLE DETECTION
The electronic board determines the position of the leaf and the
speed of movement via the encoder and detects the presence of an
obstacle in the event of impact.
-
If an obstacle is detected during opening or closing, the gate
reverses for 1 s and then the automation stops.
Adjust the sensitivity of the detection system (if it is too sensitive, it
can lead to obstacles to be detected by mistake): function
E C
in
advanced programming.
!
Do not disable the obstacle detection system.
CHECKS
Make sure it has been adjusted correctly by using an impact force
tester in accordance with standard EN 12453.
!
If the impact force limits indicated in the standard have been met using the
pre-limit switch deceleration, slow movement has to be enabled every time
power is turned on / restored: function
S r
in advanced programming.
With
S r
=
Y
, every time power is turned on / restored, the leaf moves
at a slow speed until it has travelled completely between one limit switch
and the other.
For non-EU countries, if there are no specific local regulations, the
static force must be less than 150 N.
Summary of Contents for 746 E R Z20
Page 1: ...746 E R Z16 746 E R Z20 Translation of the original instructions...
Page 41: ...746 E R 41 732099 Rev D...
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