1.1) INTRODUCTION:
The electronic card is suitable for controlling road boom gates models "WIL 4" and "WIL 6" with 24 V d.c. motors. This is an
entirely new design where the actuator has a limit switch with a speed control system that makes it possible to reach the travel
limits by means of a slowing down phase. In addition, the effort the motor is subject to during movement is promptly detected as
well as any obstacles that may be in the path and in such an even direction is reversed.
The most advanced techniques and sophisticated components have been employed in the project to guarantee maximum
immunity against interference, greater flexibility of use and the widest possible range of programmable functions.
It can be controlled "manually", "semiautomatically" or "automatically".
There are also certain highly sophisticated functions like "Reclose immediately after Photocell" or "Reclose always", "Flashing
also in pause" as well as other operating functions such as "Gradual Start-up" and "Slowing down" (a standard feature) plus a
sensitive "Brake" that only comes into play if movement has to be stopped hastily.
The whole range of radio receivers of the "K", "Bio" or "Flo" series produced by Nice can be inserted on the card.
1.2) DESCRIPTION:
In view of the particularity of the product and the use of entirely unconventional techniques, before you start installing the
gearmotor and wiring, here is a brief description of the most important elements on the control card:
Fig. 2
Set of micro dip-switches for selecting the FUNCTIONS
LED that flashes at regular intervals and indicates that the unit is working correctly
"STOP_AMPERE" trimmer to adjust friction and based on an ammetric measurement system
"PAUSE TIME" trimmer to adjust pause time in the automatic functioning mode
"WORKING FORCE" trimmer to adjust power to motor during the movement phase
"SLOWING DOWN FORCE" trimmer to adjust power to motor during the slowing down phase
Set of LEDs to signal the state of the command inputs
The OK LED
has the task of signalling the correct functioning of the internal logic and must flash at 1 second intervals; it
indicates that the internal microprocessor is active and waiting for commands. Whenever there is a change in the state of an
input (whether it is a command input or function switch) a fast double flashing is generated which happens even if the change
does not have an immediate effect. Fast flashing at 5 second intervals means that the power voltage is insufficient.
When the unit is powered, the indicator lights on the
of 24 V d.c. Normally, the LEDs on the safety inputs, PHOTOCELL, PHOTOCELL2 and STOP, are always on while those on the
command inputs, STEP-BY-STEP, OPEN-TIMER and CLOSE, are usually off.
Since the current absorbed by a d.c. motor is in proportion to the force it is subject to, developing an obstacle detection system
is very easy. During movement, the current absorbed by the motor is measured; when it exceeds a certain limit (adjustable with
the trimmer) the safety system is activated which causes movement to stop with the aid of the brake (removing the residual part
of accumulated kinetic energy); then, if one of the automatic functioning modes is active, a movement in the opposite direction
starts. To increase the level of safety still further, if the STOP_AMPERE system comes into play three consecutive times without
ever reaching any of the natural ends of the movement, a final STOP is carried out.
1
3
STOP
AMP.
OK
2
inputs turn on if that particular input is active with the command voltage
5
4
6
SLOWING
DOWN FORCE
PAUSE
WORKING
TIME
FORCE
CLOSE
OPEN
STEP-BY-STEP
PHOTOCELL 2
PHOTOCELL
STOP
English
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