Nice Riva Serie Instructions Et Avertissements Pour L'installation page 70

7 1 ADDING OR REMOVING DEVICES
Devices can be added or removed from an automated system at any
time. In particular, various types of devices can be connected to 'ECS-
bus' and the 'STOP' input, as indicated in the following paragraphs.
m
After adding or removing devices, it is necessary to re-
learn the devices as described in the section 'Learning
of other devices' and repeat the test as indicated in the
paragraph 'Testing'
7 1 1 STOP input
STOP is the input that causes the immediate interruption of the ma-
noeuvre, followed by a brief inversion. Devices with output featuring
normally open "NO" contacts and devices with normally closed "NC"
contacts, as well as devices with 8.2 kΩ fixed resistor output, such as
sensitive edges, can be connected to this input.
During the device learning phase, the control unit recognises the type
of device connected to the STOP input and later, during normal use of
the automation, the control unit commands a STOP when it senses a
change with respect to the acquired situation.
Multiple devices, even of different types, can be connected to the STOP
input if suitable arrangements are made:
– Any number of NO devices can be connected to each other in par-
allel.
– Any number of NC devices can be connected to each other in series.
– Two devices with 8.2 kΩ fixed resistor output can be connected in
parallel; if there are more than 2 devices then they must all be con-
nected in cascade, with a single 8.2 kΩ terminating resistor.
– It is possible to combine two NO and NC contacts by placing them
in parallel, while also mounting a 8.2 kΩ resistor in series with the
NC contact (this also allows for combining 3 devices: NA, NC and
8.2 kΩ).
If the STOP input is used to connect devices with safety functions,
only the devices with 8.2 kΩ constant resistance guarantee Category 3
safety against faults in accordance with the EN 954-1 standard.
7 1 2 Learning of other devices
ECSbus is a technology that allows compatible devices to be connect-
ed with only two conductors, which carry both the power supply and
the communication signals. All devices are connected in parallel on the
same 2 ECSbus conductors without the need to observe any polarity;
each device is recognised individually because it is assigned a unique
address during installation.
The following can be connected to ECSbus, for example: photocells,
safety devices, control buttons, indicator lights, etc. The control unit
recognises all connected devices one by one through a special learning
phase and is able to detect all possible faults with extreme reliability.
For this reason, every time a device connected to the ECSbus is added
or removed, the learning phase must be performed in the control unit.
28 – ENGLISH
7 - FURTHER INFORMATION
To do this:
1
Press and hold the
3 seconds and release the button
2 wait a few seconds until the control unit has completed the de-
vice learning phase
3 At the end of this phase, the 'L2' LED must turn off. If it flashes,
it means that the procedure was not successful. In this case,
refer to chapter "TROUBLESHOOTING GUIDE".
43
7 1 3 Optional photocells
Additional photocells can be installed at any time in addition to those
already supplied. In an automatic system for 2 leaf gates, they can be
positioned as shown in ("Figure 44").
For the photocells to be recognised correctly by the control unit, they
must be addressed using the appropriate electrical jumpers. The ad-
dressing operation must be performed on both TX and RX (by setting
the electrical jumpers in the same way) and checking that there are no
other pairs of photocells with the same address. The photocells must
be addressed so that they can be correctly recognised among the oth-
er ECSbus devices and so that they can be assigned their function.
To do this:
1 Open the photocell housing
2 identify the position in which they are installed based on the
("Figure 44") and set the jumper according to Table 13. Un-
used jumpers must be stored in the compartment provided so
that they can be reused in the future ("Figure 45")
3 perform the learning phase as indicated in paragraph " Learn-
ing of other devices".
44
FOTO 2 II
button "P2" ("Figure 43") for at least
u
FOTO II
FOTO
FOTO 1 II
FOTO 1
P2
FOTO 2