tau D747M Notice D'installation page 20

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. Errors will continue to be
signalled until a complete opening and closing manoeuvre is executed.
If the safety devices are activated 5 consecutive times during the same opening or closing ma-
noeuvre, the control unit will switch to slow-down mode as it searches for the closing travel limit.
To reset, the gate must execute a complete opening and closing cycle, otherwise the travel limit
search phase will start again each time the safety devices are activated.
FLASHING LIGHT (18V DC - max. 20W)
Besides signalling the opening and closing of the gate, at the end of the opening or closing
manoeuvre it also signals errors with a series of pre-defined flashes, which last for max 30
seconds.
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).
3 flashes: power failure;
Check the thermal-magnetic circuit breaker (upstream from system), check the hour counter.
4 flashes: max current limit exceeded;
Gearmotor has exceeded absorption limits, check for obstacles along the path of the gate.
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.
7 flashes: no memorization procedure has been executed;
Execute memorization procedure.
Multiple errors are signalled by a 2-second pause between signals. Errors continue to be sig-
nalled until a complete opening and closing manoeuvre is executed.
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 manoeuvre 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.
20 D747M