Checking Connections; Adjustments - Nice Robo RO 300 Livret D'instructions

2.2.4) Checking connections

The following operations entail working on live circuits; most of
!
these run on extra-low safety voltage so they are not dangerous but
some are contain mains voltage which means they are HIGHLY
DANGEROUS! Pay the greatest of attention to what you are doing
and NEVER WORK ALONE!
• Power the unit and check that voltage between terminals 5-6 is
approx. 24 Vac.
• Check that the "OK" Led flashes rapidly for a few moments and
then that it flashes at a regular frequency.
• Now check that the Led's relative to the N.C. (Normally Closed)
contacts are on (all safety devices active) and that the Led's
relative to the N.A. (Normally Open) inputs are off (no command
present); if this is not the case, check the connections of the
various devices and make sure they are in good working order.
The STOP input switches off both FCA and FCC.
• Make sure the limit switches are connected properly; move the
limit switch lever and check that the relative limit switch cuts in
and switches off the relative Led on the control unit.
• Release the leaf, take it to the halfway point and then block it; it
is now free to move in either the opening or closing direction.
• Now make sure that movement occurs in the right direction, that
is, see whether the movement set on the unit corresponds to
that of the leafs. This check is of paramount importance, if the
direction is wrong, in some cases (in the "Semiautomatic" mode,
for instance) the "Automatic" system might appear to be working
properly; in fact, the "Open" cycle is similar to the "Close" cycle

3) Adjustments:

Adjustments can be made with the trimmers that modify the
following parameters:
Working time (TL):
Adjusts the maximum duration of the opening or closing manoeuvre.
To adjust the working time TL, select the "Semiautomatic" operating
mode by moving Dip-Switch 1 to ON and adjust the TL trimmer to
halfway along the travel distance. Then run a complete opening
cycle followed by a complete closing cycle and readjust the TL
trimmer in order to leave enough time for the whole manoeuvre plus
a margin of about 2 to 3 s.
If the trimmer is at maximum and there still is not enough time, cut
the TLM jumper on the printed circuit between the TL and the TP
trimmers in order to provide more working time.
Pause Time (TP):
In the "Automatic" mode, this adjusts the delay between the end of
the opening manoeuvre and the beginning of the closing manoeuvre.
To adjust Pause Time TP, select the "Automatic" operating mode by
moving Dip-Switch 2 to ON and adjust the TP trimmer as required.
Then carry out an opening manoeuvre and check the time elapsed
before "Automatic" closing manoeuvre.
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 close against the obstacle with disastrous results!
• To see whether or not the direction of rotation is correct, give a
short pulse to the Step-by-Step (PP) input; the first manoeuvre
the unit will carry out after being powered is always an "Open"
one, so simply verify that the automatic system moves in the
opening direction; if this movement is incorrect, proceed as
follows:
u Turn the power off
u Turn the motor and the limit switch power connectors
180°. (Ref. "O" and Ref. "V" of Fig.1)
u Once this has been done, check whether the direction of
rotation is now correct by repeating previous point.
The "OK" Led located in the centre of the board has the task of
signalling the status of the internal logic: regular flashing at 1 second intervals
indicates that the internal microprocessor is active and waiting for commands.
When the microprocessor recognises a variation in the state of an input
(whether it is a command or a function Dip-Switch input) it generates a rapid
double flash even if the variation does not have any immediate effect.
Extremely rapid flashing for 3 s means that the control unit has just been
powered or is carrying out internal testing. Irregular flashing, lastly, means that
the test has been unsuccessful and that a fault has occurred.
F
TLM
Force (F):
Fitted on the control unit, this adjusts maximum Force.
Take great care when adjusting the Force (F) trimmer as this may
affect the level of safety of the automatic system. Trial by error is
required to adjust this parameter, measuring the force applied to the
leaf and comparing it with regulatory values.
In the RO1010 and OT21 control units, Force is adjusted with a
multi-position Switch located on the casing of the control unit power
transformer.
TL TP
9
GB