17
GB
7.3.2) STOP input
STOP is the input that causes the immediate interruption of the
manoeuvre (with a short reverse run). Devices with output featuring
normally open “NO” contacts and devices with normally closed “NC”
contacts, as well as devices with 8,2K
Ω
, constant resistance output,
like sensitive edges, can be connected to this input.
During the recognition stage the control unit, like BlueBUS, recog-
nizes the type of device connected to the STOP input (see para-
graph 7.3.6 “Recognition of Other Devices”); subsequently it com-
mands a STOP whenever a change occurs in the recognized status.
Multiple devices, even of different type, can be connected to the
STOP input if suitable arrangements are made.
• Any number of NO devices can be connected to each other in
parallel.
• Any number of NC devices can be connected to each other in
series.
• Two devices with 8,2K
Ω
constant resistance output can be con-
nected in parallel; if needed, multiple devices must be connected
“in cascade” with a single 8,2K
Ω
.
• It is possible to combine Normally Open and Normally Closed by
making 2 contacts in parallel with the warning to place an 8,2K
Ω
resistance in series with the Normally Closed contact (this also
makes it possible to combine 3 devices: Normally Open, Normal-
ly Closed and 8,2K
Ω
).
If the STOP input is used to connect devices with safe-
ty functions, only the devices with 8,2K
Ω
constant resis-
tance output guarantee the fail-safe category 3 according
to EN standard 954-1.
!
FOTO
External photocell h = 50
activated when gate closes
FOTO II
External photocell h = 100
activated when gate closes
FOTO 1
External photocell h = 50
activated when gate closes
FOTO 1 II
Internal photocell h = 100
activated when gate closes
FOTO 2
External photocell
activated when gate opens
FOTO 2 II
Internal photocell
when gate opens
FOTO 3
Single photocell for the
entire automation system
in the case of the installation of FOTO 3 and FOTO II together
the position of the photocell elements (TX-RX) must comply with the
provisions contained in the photocell instruction manual.
!
7.3.3) Photocells
By means of addressing using special jumpers, the “BlueBUS” sys-
tem enables the user to make the control unit recognise the photo-
cells and assign them with a correct detection function. The
addressing operation must be done both on TX and RX (setting the
jumpers in the same way) making sure there are no other couples of
photocells with the same address.
In an automation for sliding gates, with ROBUS it is possible to install
the photocells as shown in Figure 24.
Each time a photocell is added or removed the control unit must go
through the recognition process; see paragraph 7.3.6 “Recognition
of Other Devices”.
7.3.4) FT210B Photo-sensor
The FT210B photo-sensor unites in a single device a force limiting
device (type C in accordance with the EN1245 standard) and a pres-
ence detector which detects the presence of obstacles on an opti-
cal axis between the TX transmitter and the RX receiver (type D in
accordance with the EN12453 standard). The sensitive edge status
signals on the FT210 photo-sensor are transmitted by means of the
photocell beam, integrating the two systems in a single device. The
transmitting part is positioned on the mobile leaf and is powered by
a battery thereby eliminating unsightly connection systems; the con-
sumption of the battery is reduced by special circuits guaranteeing a
duration of up to 15 years (see the estimation details in the product
instructions).
By combining a FT210B device to a sensitive edge (TCB65 for
example) the level of security of the “main edge”, required by the
EN12453 standard for all “types of use” and “types of activation”,
can be attained. The FT210B is safe against individual faults when
combined to a “resistive” type (8,2Kohm) sensitive edge. It features
a special anticollision circuit that prevents interference with other
detectors, even if not synchronised, and allows additional photocells
to be fitted; for example, in cases where there is a passage of heavy
vehicles and a second photocell is normally placed at 1 m from the
ground.
See the FT210B instructions manual for further information concern-
ing connection and addressing methods.
24
Tabelle 13: Photocell addressing
Photocell
Jumpers
Photocell
Jumpers
