Salicru UPS SLC TWIN PRO series, User Manual, Page: 12 / 44

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4.4. Options.
Depending on the selected configuration, the equipment can in-
clude any of the following options:
4.4.1. Isolation transformer.
The isolation transformer, provides a galvanic isolation that al-
lows isolating the output from the input completely.
The installation of an electrostatic shield between the primary
and secondary windings of the transformer provides a high level
of attenuation of the electrical noises.
The isolation transformer can be installed at the input or output
of the UPS from SLC TWIN PRO series and it will always be
located out from the equipment enclosure.
4.4.2. External maintenance manual
bypass.
The purpose of this option is to isolate electrically the equipment
from mains and critical loads, without breaking the power supply
to the loads. Therefore, in this way the maintenance or fixing
tasks can be done in the equipment with no interruption on the
power supply energy to the protected system, at the same time
that unnecessary risks are avoided to the technical staff.
The basic difference between this option and the manual bypass
integrated in the own UPS enclosure consists in a better manoeu-
vring, because it allows a complete disconnection of the UPS from
the installation.
4.4.3. Integration in IT networks by
means of the SNMP adaptor.
The big IT systems based on LANs and WANs that integrate
servers with different platforms, they have to include an easy
way of controlling and management at the manager system dis-
posal. This facility is got through the SNMP adaptor, which is
well-known by the main software and hardware manufacturers.
The available SNMP option for SLC TWIN PRO series is a card
to be inserted into the slot that the UPS has in its rear side.
The connection of the UPS with the SNMP is internal meanwhile
the connection between the SNMP and the IT network is done
through a RJ45 connector 10 base.
4.4.4. Relays interface card.
See section 5.3.8.4.
4.4.5. Parallel cable.
It is the used parallel cable to make the parallel communication
among all the equipments that makes a system.
All models from SLC TWIN PRO series already include the par-
allel kit as standard. In case, it is needed to upgrade the power
of the equipment or to get redundancy by paralleling more equip-
ments of the same power, this cable will be needed.
4.4.6. MODBUS protocol.
The big IT systems based on LANs and WANs, many times
they require that the communication with any device to be inte-
grated in the IT network has to be done by means of an industrial
standard protocol.
One of the most used industrial standard protocols in the market
is the MODBUS protocol. SLC TWIN PRO series is also ready
to be integrated in this type of environments through the external
“SNMP TH card” device with MODBUS protocol.
USER MANUAL