Salicru SLC CUBE 4 7.5 kVA Mode D'emploi page 130

Make sure you follow the connection procedure described in sec-
tion 5.2 Connection
battery module(s) for those devices that have backup extension.
In parallel systems, the length and cross section of the ca-
bles that run from the manual bypass board to each UPS
and from the UPSs to the board will be the same for all of them,
without exception.
In the worst case, the following deviations must be strictly ob-
served:
When the distance between the UPSs in parallel and the board
•
is less than 20 metres, the difference in length between the
devices' input and output cables must be less than 20%.
When the distance between the UPSs in parallel and the board
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is more than 20 metres, the difference in length between the
devices' input and output cables must be less than 10%.
Placement of the parallel system: see section 5.1.5.2.
8.2.1. Connecting signals in parallel.
8.2.1.1. Current signal and communication bus.
Communication signal
•
communication signal bus between the devices in the system.
Each cable has a male and a female connector at the end and
must be used to connect two consecutive devices. It is vital
that you close the loop between the last and first devices. The
length of the parallel cable is about 1.5 meters. It should not
be extended under any circumstances, as this would present a
risk of interference and communication failure.
Current signal bus. Use the cable with connectors at the ends
•
to connect the current signal between consecutive devices, as
shown in Fig. 66. Lastly, close the bus loop between the last
and first devices.
The length of the parallel cable supplied should not be
extended under any circumstances, as this would pre-
sent a risk of interference and communication failure.
Fig. 66. Current signal and communication bus connection.
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for the input, bypass, output (loads) and the
bus. Use the DB15 cable to connect the
PARALLEL 1 PARALLEL 2
Current
signal bus
UPS no. 1
Current signal connection bus
8.2.1.2. Terminal block, auxiliary contact switch or
manual bypass disconnector (EMBS).
The UPS's two-terminal block
the normally closed
bypass disconnector or switch.
The protection boards with manual bypass (optional) have a two-
terminal block connected in parallel to the normally open
iliary contact of the protection board's manual bypass disconnector
or switch. All of the manual bypass auxiliary contacts are of the
early-make type.
If you acquire a protection board with manual bypass
•
from another source, make sure it has the auxiliary con-
tact indicated and connect it to the terminal block
each device. The auxiliary contact must be the early-make type.
It is VITAL, as a measure to ensure the safety of the
•
system - including the loads - to connect the UPS's ter-
minal blocks
same function on the protection board. This will prevent any
erroneous actions involving any manual bypass disconnector
or switch from causing total or partial failure of the installation,
including loads, while the UPSs are running.
8.2.1.3. INPUT SIGNAL connection block, auxiliary
contact switch or output disconnector.
This normally open
tems that are connected in parallel, as it is used to tell the UPS
that the output disconnector switch on the distribution board has
dropped or opened.
Between pins 5 and Vcc on the
the terminals for the block corresponding to the auxiliary contact of
the output switch for each device, located on the protection board.
Bear in mind that in order to enable the input signal of the auxiliary
contact of the external output switch, first it is necessary to make a
bridge between the GND and OP pins on the same INPUT SIGNAL
connection block (see Fig. 19 and Fig. 20).
If you acquire a protection board from another source, make
sure it has an output auxiliary contact and connect it as
described above for each device. The auxiliary contact must be of
the early-break type.
Communication bus
•••
•••
PARALLEL 1 PARALLEL 2
Current
signal bus
signal bus
UPS no. 2
(EMBS) is connected in parallel to
(NC)
auxiliary contact of the device's manual
(EMBS)
to the terminal block that provides the
(NO) auxiliary contact signal is useful in sys-
INPUT SIGNAL
•••
Current PARALLEL 1 PARALLEL 2
UPS no. N
(NO)
aux-
(EMBS)
for
block, connect
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