Nice MINDY A6-A6F Mode D'emploi page 28

English
The following refers only to the A700F version
C) Check that voltage on terminals 14-15 is 24 V a.c. for powering the photoelectric cell transmitters.
As soon as the unit is powered the indicator lights (LEDs) on the active inputs should light up; in addition, the "OK" LED should
start flashing almost immediately afterwards at regular intervals. If none of this happens, switch power off and check connections
more carefully.
• The task of the "OK" LED, in the centre of the card, is to signal the state of the internal logic: regular flashing at 1 second intervals
means the internal microprocessor is working and waiting for commands. On the other hand, when the same microprocessor
recognises a variation in the state of an input (be it a command input or function dip-switch), a double, quick flashing is generated
even if the effects of the variation are not immediate. Extra fast flashing for 3 seconds means that the unit has just been powered
and is carrying out a test of the internal parts; lastly an irregular, non constant flashing means that the test was unsuccessful and,
consequently, there is a failure.
D) Now check that the LEDs of inputs with NC type contacts are on (all the safety devices active) and that the LEDs of inputs with
NO type contacts are off (no command present); if this does not happen check connections and effectiveness of the various
devices.
E) Check that all the safety devices on the plant are working properly (emergency stop, photoelectric cells, pneumatic edges, etc.);
each time they trigger the corresponding STOP, PHOTOCELL or PHOTOCELL 1 should turn off.
• This is one of the most important checks and must be done with great care: in actual fact the "active" safety of the gate machine
depends on the correct functioning of the safety devices. If the flashing light is an excellent instrument for signalling the state of
danger and the torque limiting devices are an excellent means to minimise damages, only a correct installation of the safety
devices will make it possible to block the automatism before it can cause any damage.
The following refers only to the A700F version
F) You will have to check correctness of the connections if limit switch inputs are used. Move the wings one at a time and check
that once the point wanted is reached, the corresponding limit switch triggers, turning the relative LED off on the unit (or turning it
on if NO limit switches are installed).
Now is the time to check whether movement occurs in the right direction, that is, to see whether movement set on the unit
corresponds to that of the gates. This check is of paramount importance: if the direction is wrong in some cases (in the
semiautomatic functioning mode for instance), the gate might appear to be working properly; in fact, the OPEN cycle is similar to
the CLOSE cycle but with one basic difference: the safety devices are ignored in the closing manoeuvre which is normally the
most dangerous, and they will trigger in the opening manoeuvre causing the gate to reclose up against the obstacle with disastrous
results!
G) To see whether or not rotation direction is correct, give a short pulse to the Step-by-Step input; the first manoeuvre the unit will
carry out after being powered on is always an OPEN one, so simply verify that the gate starts opening; if movement is wrong you
must proceed as follows:
1 - Turn power off
2 - Reverse the "OPEN" and "CLOSE" connections of the motor or motors that are turning in the wrong direction.
Once this has been done, check if rotation direction is now correct, repeating the procedure described in point "G".
H) Having checked all connections and motor rotation direction, it is possible to try a complete movement of the actuators; we
recommend that you always work in the manual mode with all functions deactivated. If you use the Step-by-Step as the command
input, the first movement (after turning on) should be an opening one. By means of the command inputs, move the gate until it
reaches the open point; if everything goes normally you can then go on to the closing manoeuvre and move the gate until it
reaches the stop point.
It is worthwhile carrying out several open and close manoeuvres so you can evaluate any defects in the automation's mechanical
structure and also to pinpoint any specific points of friction.
I) Now test triggering of the safety devices; in the opening manoeuvre PHOTOCELL and PHOTOCELL 1 have no effect but in the
closing manoeuvre they will stop movement. If the PIU' card is plugged in try functioning of the PHOTOCELL 2 input: in the closing
manoeuvre it has no effect while in the opening manoeuvre it will stop movement. The devices connected to the STOP input act
both in the opening and closing manoeuvres, stopping movement each time.
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