20
ENGLISH
8) D
EFINITION
OF
P
ROTECTION
F
USE
F1 - Mains power fuse (5A)
It disconnects the electronic unit from the power supply mains in case of short-circuit or
electric current consumption anomalies.
9) T
ECHNICAL
FEATURES
Radioreceiver
The electronic unit contains a two-channel radio receiver allowing remote control of the roller
shutter by means of the radio transmitter. The radio receiver channel 1 acts as
Opening
start
, whereas channel 2 acts as
Closing start
. The radio receiver operates with a
self-learning logic and can store up to 120 different codes from the radio-commands. Each
code may be addressed on the desired channel (opening start or closing start). The memory
contents is preserved in absence of power supply
.
The memory contents may be erased
(total cancellation).
Work time
The motor’s work time is controlled by one digital timer. For the automation system to work
properly the operating time value to be set must be slightly (min. 2 sec.) above the roller
shutter’s actual work time. If any command interrupts the roller shutter’s travel before its end,
the Timer stops and the elapsed time is stored in memory. Therefore the unit can determine,
with a fair approximation, the partial working time necessary to the roller shutter to end its
travel. In case of limit switch lack, thanks to this feature it is possible to avoid that the motor
works for a long time after the end of the roller shutter’s travel, thus reducing overheating to
the minimum.
Warning
: In case of absence of power supply the stored position will be lost.
