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ENGLISH
ENGLISH
AUTOMATION 844 MC-T & 844 T Control unit
These instructions apply to the following model:
844 MC-T
The FAAC mod. 844 MC-T automation for sliding gates is an
electromechanical operator powered by three-phase voltage,
transmitting motion to the sliding leaf via a rack and pinion drive
suitably coupled to the gate.
The irreversible system ensures the gate is mechanically locked
when the motor is not operating and, therefore, no lock need to
be installed.
The gearmotor is supplied with an adjustable mechanical clutch,
providing the necessary anti-crushing protection.
A convenient manual release makes it possible to move the gate
in the event of a power-cut or fault.
The 844 T (optional) electronic control unit must be housed in a
separate box.
The 844 MC-T automation is designed and manufactured to
control access of vehicles. Avoid any other use whatever.
1. DESCRIPTION AND TECHNICAL SPECIFICATIONS
MODEL
844 MC-T
Power supply
400V 3ph + N (+ 6 % - 10 %) 50Hz
Power absorption (W)
950
Reduction ratio
1 ÷ 30
Number of pinion teeth
Z16
Rack
module 4 with 12.566 pitch
Max thrust (daN)
190 (Z16)
Max torque (Nm)
62
Thermal protection for winding
135 °C
Use frequency
60 % (See graph)
Quantity of oil (I)
1,8
Type of oil
FAAC XD 220
Ambient temperature range
-20 ÷ +55 °C
Gearmotor weight (Kg)
15
Protection class
IP 44
Max weight of gate (Kg)
2200 (Z16)
Gate speed (m/min)
9,5 (Z16)
Gate max length (time-out)
40m (Z16)
Clutch
double disk in oil bath
Protective treatment
cataphoresis
Appliance
844 T (optional)
Limit switch
inductive sensor with plate
Gearmotor overall dimension
s
LxHxD(mm)
see fig. 2
Technical specifications of electric motor
RPM
1400
Power consumption (W)
950
Current absorption (A)
2,5
Power supply
400V 3ph + N (+ 6 % - 10 %) 50Hz
Table 1
TECHNICAL SPECIFICATIONS OF 844 GEARMOTOR
1.1. MAXIMUM USE CURVE
The curve enables you to find maximum work time (T) according
to use frequency (F).
E.G: The 844 MC-T gearmotor can operate continuously at 60%
use frequency.
To ensure efficient operation, you have to work in the work range
under the curve.
Important:
The curve is obtained at a temperature of 24°C.
Exposure to the sun’s rays can reduce use frequency down to
20%.
Calculation of use frequency
This is the percentage of effective work time (o closing)
compared to total cycle time (o c pause time).
Calculation formula:
Ta + Tc
%F =
X 100
Ta + Tc + Tp + Ti
where:
Ta = opening time
Tc = closing time
Tp = pause time
Ti = interval time between one complete cycle and the next
Use frequency graph
Fig. 1
a
Securing corner plates
b
Pinion gear
c
Limit inductive sensor
d
844 INTERFACE card
e
Cover
f
Breather screw
g
Anti-crushing clutch
adjustment screw
h
Bore for accessing oil filling cap
i
Cover lock with triangular key
j
Operator earthing connection
k
Routing holes for connection cables
l
Lever release system
m
Protective sides
10
20
30
40
50
60
70
80
90
100
0
1
2
3
4
5
6
7
8
9 10
10 11 12
Percentuale
di lav. %
Tiempo (h)
% Duty cycle
% Fréquence
d'utilisation
% Benutzungs-
frequenz
% Frecuencia
de utilización
Zeit (Std.)
Temps (h)
Time (h)
Tempo (h)
b
a
c
d
e
f
g
h
i
j
k
l
m
