tau D747M Notice D'installation page 17

8. D747M CHARACTERISTICS
LED - DL3
The LED, besides indicating that the power supply is connected, also signals errors with a series of
pre-defined flashes:
steady light: normal operation;
1 flash: buffer battery voltage lower than 11,3V DC;
Check the mains power supply, charge the battery, replace the battery;
2 flashes: phototest error;
Disable phototest (dip-switch 6 OFF), check operation and connection of photocells;
3 flashes: power failure;
Check the thermal-magnetic circuit breaker (upstream from system), check the fuses;
4 flashes: max current limit exceeded;
Gearmotor has exceeded absorption limits, check for obstacles across the path of the gate, check the current
absorption of the motor when loadless and under load;
5 flashes: absence of encoder signal / no motor signal;
Check wiring, check encoder through TEST-ENCODER (optional);
Check wiring, check that the motor rotates freely when powered directly by battery, check fuse F2;
6 flashes: presence of obstacle after 5 failed attempts to close;
Make sure there are no obstacles across the path of the gate and that it slides smoothly;
7 flashes: no memorization procedure has been executed;
Execute memorization procedure.
Multiple errors are signalled by a 2-second pause between signals.
If the encoder is activated 5 consecutive times during the same closing manoeuvre (obstacle detec-
tion), the control unit opens completely. On the next manoeuvre, the control unit will switch to slow-
down mode as it searches for the closing travel limit.
GATE OPEN WARNING LIGHT (18V DC - max. 3W)
The gate open warning light flashes during the opening or closing manoeuvre in synchrony with the
flashing light, then shows a steady light when the gate has opened completely. Once the closing ma-
noeuvre has been completed this light goes off .
In addition, the gate open warning light signals the following:
• programming phase (when dip-switch 8 is set to ON);
it flashes in sync with the flashing light;
• mains power supply restored
it emits a series of flashes for approx. 2 seconds;
• presence of obstacles across the path of the gate after 5 attempts to close have failed;
it flashes in sync with the flashing light.
BATTERY CHARGER BOARD (OPTIONAL)
If the system is equipped with a battery charger board, it con operate even during power failures. If the volt-
age drops below 11,3V DC, the automation stops working (the control panel is still powered). When it drops
below 10,2V DC, the board disconnects the battery completely (the control panel is no longer powered).
OBSTACLE DETECTION
If the obstacle detection function (which can be set through trimmer FR) is activated during an open-
ing manoeuvre, the gate closes approx. 20 cm., if it is activated during a closing manoeuvre, the gate
opens all the way .
WARNING: the control panel logics may interpret mechanical friction as an obstacle.
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