Salicru SLC TWIN RT series, Руководство пользователя, Страница: 27 / 52

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SALICRU
ˆ When the distance among the UPSs and the protec-
tion panel is higher than 20 metres, the difference in the
length between the input and output cables of the equip-
ments has to be lower than 10% .
ŖŖŖ
Input circuit breakers
Output circuit breakers
M
anual b
ypas
s
UPS nr 1
Input
To loads
UPS nr 2
Fig. 16. Parallel installation of two TWIN RT UPSs from 4 to 10
kVA, with protection and manual bypass panel.
UPS nr 1
UPS nr 2
ŖŖŖ
Input and bypass circuit breakers
Output circuit breakers
M
anual By
pas
s
Input
To loads
Bypass line
Fig. 17. Parallel installation of two TWIN RT UPSs from 4 to
10 kVA, with bypass line and protection and manual
bypass panel.
4.3.10. Communication ports.
4.3.10.1. RS232 and USB interfaces.
Ŗ Communication line (COM) is a very low voltage circuit
of safety. To preserve the quality, it has to be installed
separate from other lines that have dangerous voltages (energy
distribution line).
Ŗ RS232 and USB interfaces are used by the monitoring soft-
ware and firmware updating.
Ŗ It is not possible to use both ports at the same time.
Ŗ Signal pin-out of the DB9 connector are shown in table 5.
RS232 port consists in a serial data transmission, so an im-
portant quantity of information can be sent through a com-
munication cable of 3 wires.
Ŗ Physical structure of RS-232.
ˆ
Pin 2. RXD. Serial data reception.
ˆ
Pin 3. TXD. Serial data transmission.
ˆ Pin 5. GND. Ground of the signal.
Pin # Description Input / Output
2 TXD Output
3 RXD Input
5 GND Input
Tabla 5. Pin-out of the RS232 in the DB9 connector.
Ŗ USB communication port is compatible with the USB 1.1 pro-
tocol for communication software.
4.3.10.2. Smart slot.
Ŗ UPSs have a unique slot, hidden rear the cover stated in the
views of the equipment as "Smart slot", and allows inserting
any of the following options cards:
ˆ SNMP for control via Web.
ˆ
Remote UPS management through Internet or Intranet.
ˆ
Relays interface (for more details see the next section).
Ŗ For more information, contact with our S.T.S or our nearest
distributor.
4.3.10.3. Relays interface (option).
Ŗ Communication line (COM) is a very low voltage circuit
of safety. To preserve the quality, it has to be installed
separate from other lines that have dangerous voltages (energy
distribution line).
Ŗ UPS has a dry contact card for the relays interface commu-
nication protocol, it provides digital signals in a free potential
way, with a maximum applicable voltage and current of 240
V ac or 30 V dc and 1A.
Ŗ This communication port makes possible the dialogue be-
tween the equipment and other machines or devices, through
the 5 dry contacts supplied in the terminal strip included in
the same card and to each one of them an alarm of the 8
available can be assigned (see table 6).
Also there are other three additional terminals with only one
common, for an installation of an external On/Off switch to
the UPS and a third one with free setting among EPO, Shut-
down or "On-Off" remote control.
From factory all contacts are normally opened, being able
to set them separately one by one, by means of the Hyper
Terminal software or equivalent.