Nice MOFB Manual De Instrucciones página 4

7
RX
NOTE (for FOTO 3): it is not normally necessary to observe any
restrictions in the position of the pair of elements (TX-RX) that make
up each photocell system; however, if photocell PHOTO 3 is used in
conjunction with photocell PHOTO II, the positions illustrated in fig-
ure 7 must be observed.
2. Programme the devices using the control unit as described in the
paragraph entitled "Recognition of connected devices" in the instruc-
tion manual of the various "BlueBus" interfaces or control units.
Note: If the photocell is used to replace an already existing one, the
jumpers must be set exactly as they were in the old photocell. It is
not necessary to carry out the recognition phase.
5) Testing and checking operation
After the recognition phase, check that the LED on the photocell starts flashing (both on TX and RX). Check Table 2 for the state of the pho-
tocell based on the way LED "L" flashes.
Table 2
LED "L"
Off
L
3 quick flashes and a
second's pause
Very slow flashing
Slow flashing
Quick flashing
Very quick flashing
Always ON
Warning: After you have added or removed any photocells, the
automation system must be tested again according to the directions
contained in the installation manual.
To check the photocells and make sure that there is no interference
with other devices, pass a 5 cm diameter, 30 cm long cylinder on the
optical axis, first near TX, then near RX and finally at the mid-point
between them and make sure that in all these cases the device is
triggered, switching from the active to the alarm status and vice-ver-
sa; finally, that it causes the intended action in the control unit, for
example that it causes the reversal of the movement during the clos-
ing manoeuvre.
4
TX
TX
3. Adjusting the orientation: it is possible to adjust the orientation of
the adjustable MOFOB photocell. This enables the user to achieve
a perfect alignment, even if the fastening is not excellent. Proceed
as per Figure 8 in order to regulate the orientation. Loosen the
screw slightly and move the mobile part slowly. Then tighten the
screw. Follow the signals of the "L" indicator: the slower the flash-
es, the better the centring.
The best centring has been achieved for both the MOFB and
MOFOB versions when the indicator flashes very slowly, although
performance is also acceptable when flashes are simply slow.
However, the centring is at risk when the indicator flashes quickly.
Status
The photocell is either not
powered or is faulty
Device not recognised by the
control unit
The TX transmits regularly
The RX receives a perfect signal.
The RX receives a fair signal
The RX receives a poor signal
The RX receives a very poor
signal
The RX does not receive any
signal at all
10
8
RX
TX
Action
Make sure the voltage for the photocell terminals is
approximately 8-12 Vdc. If the voltage is correct, the
photocell is probably broken.
Repeat the learning procedure on the control unit. Make
sure that all the photocell pairs have different addresses
Normal operation
Normal operation
Normal operation. However, it is best to check the TX-RX
alignment and make sure the glasses are clean
It is at the very limit of normal operation. Check the TX-
RX alignment and make sure the glasses are clean.
Make sure that the LED on TX flashes once slowly.
Check to see if there is an obstacle between TX and
RX. Check the TX-RX alignment
L