Limit Switch Adjustment - Alutech AM0 Notice

PE L N
Table 3 – Designation of electrical interfaces
Color of wire of the motor
power cable
Blue
Black
Brown
Yellow-green
If the rotation direction of the roll tube does not coincide with the required one, disconnect
electrical network and swap the connection of phase conductors L1 and L2.

4. LIMIT SWITCH ADJUSTMENT

At the beginning of limit switch adjustment the curtain of roller shutter should be in the fully
lowered position.
This sequence of the limit switch adjustment is suitable for the right-hand and left-hand
installation of the motor.
The limit switch adjustment is performed by means of adjusting screws 1 on the head part of the motor
(Fig.2). Next to the adjusting screws there are arrows 2 that indicate the direction of the motor shaft
rotation (not to be confused with the direction of movement of the curtain of the roller shutter!). Rotation
of adjusting screw corresponding to the arrow towards "+" increases the duration of the rotation; rotation
towards "-" decreases the duration of the rotation.
Upper Limit Switch Adjustment:

Enable the motor to lift the curtain. The motor will automatically stop through the activation of the
"up" limit switch; in this case the curtain of the shutter should not move up to the upper limit position;

Without releasing the button of the switch, rotate the adjusting screw towards "+" until the curtain
reaches the upper limit position.
Down Limit Switch Adjustment:
 Enable the motor to lower the curtain; using rotation of corresponding adjusting screw towards "-" wait
until the curtain stops before it reaches the lower limit position;
 Continue lowering the curtain, and using rotation of adjusting screw towards "+" wait for the curtain to
reach the lower limit position.
After limit switch adjustment it is required to perform trial start and make sure that the adjustment is
correct. If the limit switch adjustment is incorrect, repeat the adjustment.
2
-
+ -
1
The limit switch adjustment is to be performed by the wrench from the set of the motor.
Do not use any electrically operated tool for the limit switch adjustment!
2
L1
1
2
3
4
L2
Fig.1 –Wiring diagram
Designation of
contact
N
L1
L2
PE
Fig.2 – Limit switch adjustment
+
N
1
PE
Neutral conductor (neutral)
Rotation direction phase 1
Rotation direction phase 2
Protective grounding
4
1 – Electrical motor
2 – Circuit breaker
Purpose