Key Automation 900CT-24M Manual De Instrucciones página 12

FOTO-TEST
By default the control unit is installed with this function disabled (Dip 8 = OFF) To run the phototest, arrange two feed
lines connected as follows:
- The photocell receiver (with 5-pin terminal board) is powered by the 24 Vdc terminals.
- The photocell transmitter (with 2-pin terminal board) is powered between the – COM and the + LIGHT outlet
- This test is performed ONLY on the photocell active in F.CH closing
Each time the gate is opened, the control unit briefly cuts off the power supply to the photocell transmitters and checks
for the status change. If everything functions properly it begins the opening maneuver; if an anomaly is found, the cycle
stops and the blinker flashes several times in warning.
The phototest provides the following advantages:
-Energy savings;
-Increased autonomy in BATTERY mode;
-Less wear on the electronic device components.
-The phototest only functions when the photocell is on in F.CH closing mode.
-When the phototest is enabled and the gate is closed, the photocell transmitters are off and the corresponding light is
OFF.
-The photocells only function while the gate is moving.
-During the Programming procedure, leave this function off (Dip 8 = OFF) and short-circuit the input by placing a jum-
per between C and F.CH.
ADJUSTMENT OF SENSITIVITY
EN 12445 requires that every automation system must pass impact tests measured with a special instrument. Carry
out the impact tests and change the encoder sensitivity through the trimmer SENS (part 10 fig. 1).
If adjustments are insufficient to make values fall within the graph indicated by the above standard, we recommend
installing a soft rubber profile on the leading edge of the gate in order to soften impact.
If the requirements of the standard can still not be met after having adjusted the sensitivity and mounted the rubber
profile, alternative devices must be mounted, such as a safety edge on the leading edge of the gate.
ELECTRONIC CLUTCH FUNCTION
This is an extremely important safety device. Calibration remains constant in time and is not subject to wear as are
mechanical clutches.
A. It is activated both during closing and during opening. When it cuts in, it inverts the direction without disabling auto-
matic closing if this has been enabled.
B. If it intervenes twice in a row, it automatically reverts to STOP mode, disabling automatic closing if this was enabled.
Intervening twice in a row means that the obstacle is permanent and any further movement could be dangerous, for-
cing the user to give the close or open command.
C. If it intervenes three times in a row and for more than 120 seconds, the control unit runs an Emergency procedu-
re which slowly opens the gate all the way until it is flush with the end stroke and then closes it again automatically if
automatic closing mode has been enabled. In this way, if the end strokes have been lost, they would be automatically
resynchronized.
BLINKER FUNCTION
BRAIN LAMP Function: Besides being a safety device, the blinker gives both the end user and the installer information
on the gate operating status. Let's take a look at its function:
A. Pre-blinking is 0.5 second in opening mode and 1 second inclosing mode. For safety purposes this warns the user
that the gate will start moving shortly.
B. When gate automatic opening and closing are enabled (Dip 2 set to ON), the blinker remains on steady for 2 secon-
ds indicating that the gate will be closed automatically.
C. When the gate is open, if a safety device cuts in, it flashes for 5 seconds and then goes off until the contact of the
safety device is reset.
D. It indicates the Programming phases described in the paragraph on Programming work times.
FINAL TEST AND INSPECTION
Always carry out a final test and inspection after having completed all the programming.
- Check correct operation of the protective devices (anti-crushing system, stop pushbutton, photocells, safety edges,
etc.).
- Check correct operation of the warning devices (flashing lights, open gate warning light, etc.).
- Check correct operation of the control devices (P/P button, remote controls, etc.).
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