14
ENGLISH
ENGLISH
748 AUTOMATION SYSTEM
The FAAC 748 automation system for sliding residential gates is an
electromechanical operator that transmits the leaf movement by
means of a pinion coupled to a rack fixed to the gate.
The irreversible system locks mechanically when the motor is not
running, so it is not necessary to install a lock.
1.
DESCRIPTION AND TECHNICAL SPECIFICATIONS
Table 1: Technical specifications of 748 115Vac and 230Vac
Operator
Model
748-115V
748-230V
Power supply Vac(+6-10%) 50Hz
115
230
Absorbed power (W)
600
350
Current drawn (A)
5
1.6
Electric motor
4 poles - 1400rpm
4 poles - 1400 rpm
Surge capacitor
30µF/450V
10µF/450V
Reduction ratio
1:25
Pinion
Z16
Rack
module 4 - pitch 12.566
Max. torque (Nm)
15
Max. thrust (daN)
45 (Z16)
Thermal cutout on winding
140°C
Duty cycle
(
see paragraph 1.1)
Temperature range (°C)
-20
쐦
+55 °C
Weight of operator (Kg)
10
Housing protection
IP 44
Max. gate weight (Kg)
300
Gate speed (m/min)
12 (Z16)
1.1. MAXIMUM DUTY CYCLE CURVE
The curve makes it possible to determine the maximum operating time (T) as a
function of the duty cycle (F), e.g., the 748 operator can work continuously at a duty
cycle of 25%.
To ensure smooth running, operation should be kept within the duty
area below the curve.
Important: the curve was plotted on the basis of operation at 24 °C.
Allow for up to 20% reduction of duty cycle in case of exposure to
direct sunlight.
Calculating the duty cycle
The duty cycle is the proportion of
the actual operating time (opening
+ closing) with respect to the total
time of the cycle (o closing
+ pause time).
The formula for calculating it is the
following:
%F=
To + Tc
x 100
To + Tc + Tp + Ti
where:
To = opening time;
Tc = closing time;
Tp = pause time;
Ti = duration of interval between a
complete cycle and the next one.
2.
STANDARD INSTALLATION LAYOUT
10
20
30
40
50
60
70
80
90
100
0
1
2
3
4
5
6
7
8
9
10
10
1 1
12
Percentuale
di lav. %
Tiempo (h)
% Duty cycle
% Fréquence
d'utilisation
% Benutzungs-
frequenz
% Frecuencia
de utilización
Zeit (Std.)
Temps (h)
Time (h)
Tempo (h)
3.
INSTALLATION OF AUTOMATION SYSTEM
3.1. PRELIMINARY CHECKS
To ensure trouble-free operation, make sure that the gate (whether
existing or yet to be installed) has the following specifications:
• Max. gate weight 300 kg.
• Strong and rigid leaf frame.
• Flat leaf face, with no protruding parts and no vertical members.
• Smooth and even movement of the gate over its entire travel.
• No sideways oscillation of the leaf.
• Upper and lower sliding system in perfect conditions. The use of floor tracking with
a rounded channel is preferable to reduce friction in the sliding movement.
• Only two slide wheels.
•
Mechanical safety stops to avoid risk of derailment. These stops must
be firmly fixed to the ground or to the floor track, about 2 cm beyond
the travel limit.
• No mechanical locks.
If any welding or brazing is required on the gate, it should be done
before installing the automation system.
The condition of the structure directly affects the reliability and safety of the
automation system.
햲
Cover
햳
Supports for cover guides (2)
햴
Support for electr. control unit
햵
Electronic control unit
햶
Opening for cables
햷
Releasing device with key
햸
Bores for fastening cover (4)
햹
Slots for fastening operator
햺
Mechanical travel stop
햻
Pinion Z16
햽
Electric motor
햾
Earth connection of operator
Fig. 1
!
"
'
&
$
%
#
TX
햲
748 Operator
햳
Photocells
햴
Key-operated pushbutton
햵
Flashing lamp
햶
Radio receiver
•
Use suitable rigid/flexible pipes for laying power cables.
•Always keep low voltage accessory cables separate from power cables.
To avoid interference, use separate sheaths.
Fig. 2
