E721
5
532014 - Rev.E
ON
1 2 3 4
BUS
BUS
DL2
DL1
DS1
ON
1 2 3 4
BUS
BUS
DL2
DS1
RX - TX
RX
TX
Fig. 5
ENGLISH
4.1 BUS-2EASY PHOTOCELLS
This board is equipped with a BUS-2EASY circuit that can
be used to easily connect a high number of auxiliary BUS-
2EASY devices to the safety device (e.g. up to 16 pairs of
photocells), appropriately programmed, using only two
cables without polarity.
Before connecting the photocells, it is advisable to select
the type of operation (Fig. 4) on the basis of the area of
movement the cells must protect and to position the dip
switches on both the transmitter and receiver (see Fig. 5)
as in Tab. 1.
4.1.1 ADDRESSING BUS-2EASY PHOTOCELLS
It is important to give both the transmitter
and the receiver the same address.
Ensure that there are not two or more pho-
tocell pairs with the same address.
If no BUS-2EASY accessory is used, leave the
BUS-2EASY connector (J12 - fig. 1) free.
Dip1
Dip2
Dip3
Dip4
Re.
Type
OFF
OFF
OFF
OFF
B
OPENING
Max. 6 pairs
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
A
CLOSING
Max. 7 pairs
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
ON
ON
ON
ON
OFF
OFF
ON
OFF
OFF
C
OPENING and
CLOSING
Max. 2 pairs
OFF
ON
OFF
ON
ON
ON
ON
ON
/
OPEN PULSE
Tab. 1 - Addressing BUS-2EASY photocells
4.1.2 STORING BUS-2EASY ACCESSORIES
At any time it is possible to add BUS-2EASY photocells
and accessories to the system, simply by following the
procedure below:
1. Install and programme the accessories with the
required address (see par. 4.1.1).
2. Cut off power to the board.
3. Connect both cables of the BUS-2EASY accessories to
the red terminal block J12 (polarity irrelevant).
4. Power the board.
5. Quickly press the SETUP push-button (SW4) once to
register the accessories. Check the operation of the
installed BUS-2EASY devices.
6. The board has stored the BUS-2EASY accessories.
Follow the instructions in the following table to check that
the BUS-2EASY connection status is efficient.
The same procedure must be performed on a
MASTER unit also when acquiring a SLAVE unit
connected to the BUS- 2EASY with POLARISED
connection
Tab. 2 - Description of BUS-2EASY LED
Fixed ON
Normal activity (LED on even without pho-
tocells). No registered photocell engaged.
Slow
flasher
At least one registered photocell engaged
or not aligned.
Off (flash
every
2.5 secs)
BUS-2EASY line short-circuited.
Off
- BUS-2EASY line disabled (does not supply
power)
- Battery operation
- Unit programmed as a SLAVE
DL1
= Align-
ment
DL2
= BUS -
2EA SY/Power
supply status
DS1
= Dip-
switches for
programming
Before connecting the photocells, it is advisable to select
the type of operation on the basis of the area of movement
that they need to protect:
Safety devices during closing:
operate only during the
automated system closing movement and are therefore
suitable for protecting the closing area from the risk of
impact.
Safety devices during opening:
operate
only during
the automated system opening movement and are
therefore suitable for protecting the opening area from
the risk of impact.
Safety devices during opening/closing:
operate during
both the automated system opening and closing
movements and are therefore suitable for protecting
the entire movement area from the risk of impact.
