Description Of The Product - Nice Mindy A824 Anweisungen Und Hinweise Für Den Installateur

1) INTRODUCTION:
The electronic card is designed to control two 24 Vdc motors like, for instance, PLUTO or METRO con built-in movement
encoder. This is a state-of-the-art product: opening of the actuator does not depend on working time but on a system that
controls functioning position by means of a magnetic sensor that detects shaft rotation degrees (encoder); this makes functions
possible that were impossible with traditional controlling systems.
The stop point is reached by slowing down, achieved with millimetric precision.
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Speed is constantly controlled during movement and any obstacles are promptly signalled and movement is reversed (anti-crushing).
Programming is "child's play" and is completely automatic.
Once the unit is installed, press a button and wait until all the limit measurements have been taken within which movement occurs.
The most advanced technologies have been used for this product to guarantee maximum immunity against interference, greater
flexibility of use and the widest possible range of programmable functions.
Three functioning modes are possible: "hold to run control", semiautomatic" and "automatic".
There are also some sophisticated functions like "Close immediately after Photocell", and other special operating functions like
"Gradual start" and "Slowing Down" added as standard features.
The whole range of Nice radio receivers can be plugged into the control card as well as the "PER" card, with additional
functions, and the "CHARGE" card for recharging the optional batteries.

1.1) DESCRIPTION OF THE PRODUCT:

This unit uses new control techniques for direct current motors with movement encoder so it is necessary, prior to installation,
to analyse the basic parts it is made of so as to minimise possible installation problems.
1.1.1) MOVEMENT ENCODER:
Gate movement is detected by a movement control system on the gearmotor that works by means of a magnetic sensor
installed on the motor shaft.
This new magnetic reading system is immune to problems related to dirt, humidity etc. which means it is ideal for using in
extremely severe environmental conditions.
We can see if the two encoders (one for each motor) are working properly by their 2 LEDs which should come on each time the
motor shaft turns; the LEDs can come on more or less quickly depending on movement speed. When the motors are not moving
the LED can be on or off depending on the point at which the shaft stopped.
1.1.2) ANTI-CRUSH CLUTCH:
The movement encoder is used to control the position and speed of the gate constantly during movement.
If an obstacle is detected the gate is stopped.
If one of the automatic functioning modes is active, a movement in the opposite direction will be started.
To increase the level of safety still further, if the clutch triggers three consecutive times without ever reaching the natural end of
movement, movement will be stopped without reversal.
1.1.3) INPUTS:
When the unit is turned on and the input is active the pilot light on that input will come on.
Normally the LEDs on the safety inputs, STOP, PHOTOCELL and PHOTOCELL1 are on while those on the command inputs,
STEP-BY-STEP, OPEN and CLOSE are normally off.
1.1.4) KEYS:
During installation it is necessary to open or close the gate. The most natural way is of course with the commands. The three
keys "AP" (OPEN), "CH" (CLOSE) and "<<>>" are used for this purpose. Open the gate with "AP", close it with "CH" and
increase speed with "<<>>" when movement is slow. These same keys are used during programming for storing.
1.1.5) "OK" LED:
The "OK" LED signals that the internal logic is working properly: a regular flash at 1 second intervals means the internal
microprocessor is active and everything is in order. Quick flashing at 5 pulses a second means that the supply voltage is not
enough or a wrong programme has been selected.
Whenever an alteration is made on the STEP-BY-STEP, OPEN, CLOSE, PHOTOCELL inputs, etc., or if a dip switch is moved,
the OK LED will flash twice quickly signalling that the microprocessor has acquired the new state.
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