tau D749MA Notice D'installation page 23

7. D749MA CHARACTERISTICS
TIMER-OPERATED OPENING AND CLOSING CYCLES
The opening/closing of the automation can be controlled by means of a timer that has a free N.O.
output contact (relay). The timer must be connected to terminals 4 - 6 (OPEN/CLOSE button) and can
be programmed so that, at the desired opening time, the relay contact closes until the desired closing
time (when the timer's relay contact opens, enabling the automatic closing of the gate).
Note: the automatic closing function must be enabled by setting Dip-switch no. 1 to ON).
BATTERY CHARGER BOARD (INTEGRATED)
If the battery is connected the automation will operate in any case if there is no mains power supply.
If the voltage drops below 11.3 Vdc, the automation ceases to operate (the control unit remains fed);
whereas, when the voltage drops below 10.2 Vdc, the card completely disconnects the battery (the
control panel is no longer fed).
OBSTACLE DETECTION
If the obstacle detection function (which can be set through trimmer FR) is activated during an opening
manoeuvre, the automation closes approx. 20 cm., if it is activated during a closing manoeuvre, the
automation opens all the way .
WARNING: the control panel logics may interpret mechanical friction as an obstacle.
8. DIAGNOSTICS LED
DL1 - Red
PEDESTRIAN button LED signal
DL2 - Red OPEN/CLOSE button LED signal
DL3 - Green STOP button LED signal
DL4 - Green
INTERNAL PHOTOCELLS LED signal
DL5 - Green EXTERNAL PHOTOCELLS LED signal
DL6 - Green SENSITIVE EDGE LED signal
LED - DL7
Apart from highlighting the presence of the battery, LED DL7 displays any mistakes with a series of
pre-set flashes in various colours:
Key:
always on (green):
always on (yellow):
1 flash every 4 seconds (green):
1 flash every 4 seconds (yellow):
1 flash every 2 seconds (red):
fast flashing (red):
LED - DL8
The DL8 LED indicates mistakes in the board logic with a series of pre-set flashes in different colours:
Key:
1 flash every 4 seconds (green):
alternate flashing (red/green): saving to be performed;
/
led always on;
fully-charged battery, main voltage present;
battery charging;
fully-charged battery, no main voltage;
Check the main voltage;
power supply through photovoltaic panel (terminals 1-2),
battery charger disabled
low battery;
Charge the battery, replace the battery;
faulty battery;
Replace the battery;
led always on;
normal operation;
led flashing;
led flashing;
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