tau K122M Guía Para La Instalación página 18

If the safety devices are activated 5 consecutive times during the same opening or closing
manoeuvre, 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.
GATE OPEN WARNING LIGHT (18 Vdc - 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.
BATTERY CHARGER BOARD (OPTIONAL)
If the system is equipped with a battery charger board, it con operate even during power failures.
If the voltage drops below 11.3 Vdc, the automation stops working (the control panel is still
powered). When it drops below 10.2 Vdc, 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
opening 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.
SLOW-DOWN
To prevent the gate from shuddering at the end of its travel, you can set (through the RALL
trimmer) the slow down function for the opening and closing manoeuvres at a distance of 10
to 100 cm from the end of travel (by rotating the trimmer clockwise the slow-down distance is
increased; vice-versa, by rotating it counter-clockwise the slow-down distance is diminished).
When setting the slow-down distance, you should take into account the weight of the gate as
well as mechanical frictions.
N.B.: the P1 button on the board has the same function as the OPEN/CLOSE button.
TIMER-OPERATED OPENING AND CLOSING CYCLES
The opening and closing of the gate can be controlled through a digital timer equipped with a
relay contact on the output. The timer must be connected to terminals 12 - 14 (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).
N.B.: The automatic closing function must be enabled by setting Dip-switch no. 1 to
ON).
18 K122M