technical features
3
1.
the drive is transmitted through a “special” corner key; this system allows the position of the first
hole in the slat to be closer to the edge, guaranteeing a better blind stability. The electric system
incorporates a polarity inverter allowing the raise and lower function of all the connected blinds
to be fully synchronized using only two wires. A mechanical end-stop incorporated within the
head-rail, ensures a safety stop of the blind at the lowest position. The design of the cord-win-
ding system results in greater precision of the parallel function of the blind bottom rail during rai-
sing and lowering. The cord and ladder tape application has been redesigned resulting in impro-
vements to the vertical nature of the ladder tape which improves slat parallelism and increased
shading of the slats by reduction of the light transfer through the slat holes.
Height 300 ~ 2.500 mm
Width 300 ~ 2.000 mm
Maximum area 3,5 sqm
Blind stack height 4,0% blind height + 60 mm
Motor groups
24V dc power supply, maximum absorption: 300mA.
Operation speed: 50 rpm.
Torque: 0,8 Nm.
Motor
F class winding (155°C); brushes in 50% CU, 47% C, 3% MoS2; diamond finished commutator.
Reducer
Planetary manufactured in steel. Cogged gears, external broached rim, planetary supports with
guide rollers, double bearings in output.
Total Ratio: 214:1 (95:1 in the reducer; 2,25:1 in the corner key)
Encoder
Magnetic encoder in Neodymium, with a very high magnetic field with a resistance strength up
to 120°C. Fixed firmly on the motor shaft via a brass ring.
Electronic card
Manufactured from standard industrial components. Operating range (-20°C + 100 °C) and con-
trols the encoder, the speed limiter and the motor safety function. Motor and electronic card are
fixed on a plastic slide.
Head rail
Extruded aluminium, A6063S-T5 alloy.
Dimensions: width 20 mm, height 54 mm with 5 mm pelmet to reduce light passing between
the first slat and the head rail.
Powder coated to colour co-ordinate with the slats.
SL20 22M_GB 15-05-2007 9:39 Pagina 3
