Salicru SLC TWIN RT2 T UL User manual

UNINTERRUPTIBLE POWER SUPPLIES (UPS)
USER MANUAL
SLC TWIN RT2 T UL
6 and 10kVA

2SALICRU
General index.
1. INTRODUCTION.
1.1. THANK YOU LETTER.
2. SAFETY INFORMATION.
2.1. USING THIS MANUAL.
2.1.1. Conventions and symbols used.
2.2. WIRING CONSIDERATIONS.
3. QUALITY ASSURANCE AND STANDARDS.
3.1. STATEMENT BY THE MANAGEMENT.
3.2. STANDARDS.
3.3. ENVIRONMENT.
4. PRESENTATION.
4.1. VIEWS.
4.1.1. Views of the device.
4.2. DEFINITION OF THE PRODUCT.
4.2.1. Nomenclature.
4.3. OPERATING PRINCIPLE.
4.4. UPS OPERATING MODES.
4.4.1. Notable features.
4.5. OPTIONAL EXTRAS.
4.5.1. Exterior manual maintenance bypass.
4.5.2. Communication card.
4.5.2.1. Integration into computer networks using an SNMP
adapter.
4.5.2.2. RS-485 modbus.
4.5.2.3. Relay interface.
4.5.3. Extendable guide kits for mounting in a rack cabinet.
5. INSTALLATION.
5.1. RECEPTION OF THE DEVICE.
5.1.1. Reception and contents.
5.1.2. Storage.
5.1.3. Unpacking.
5.1.4. Transport to the site.
5.1.5. Siting, immobilising and considerations.
5.1.5.1. Rotation of the control panel with LCD.
5.1.5.2. Vertical tower-type mounting.
5.1.5.3. Mounting a rack in a 19” cabinet.
5.1.5.4. Preliminary considerations before connection.
5.1.5.5. Preliminary considerations before connection, regarding
the batteries and their protections.
5.1.5.6. Connection elements.
5.2. CONNECTIONS.
5.2.1. Connection of the input and output of a ‘single’ device:
5.2.1.1. Connection of the UPS’ output to the isolation
transformer’s input.
5.2.2. Configuration of the output.
5.2.2.1. Connecting the loads.
5.2.3. Connection to external batteries (backup extension).
5.2.4. Connection of the input earth terminal ( ) and the earth
connection terminal ( ).
5.2.5. Terminals for EPO (emergency power off).
5.2.6. Manual bypass auxiliary contact terminals.
5.2.7. Terminals for digital input and output to relay.
5.2.8. Parallel connection.
5.2.8.1. Introduction in redundancy.
5.2.8.2. Installation and operation in parallel.
5.2.8.3. Connection of the power cables.
5.2.9. Communication port.
5.2.9.1. RS-232 and USB port.
5.2.10. Smartslot forthe integration ofan electronic communication
unit.
5.2.11. Software.
5.2.12. Considerations before startup with connected loads.
6. OPERATION.
6.1. STARTUP.
6.1.1. Checks before startup.
6.2. UPS STARTUP AND SHUTDOWN.
6.2.1. UPS startup with mains voltage.
6.2.2. UPS startup without mains voltage.
6.2.3. UPS shutdown with mains voltage.
6.2.4. UPS shutdown without mains voltage.
6.3. OPERATING PROCEDURE FOR A PARALLEL SYSTEM.
6.4. HOW TO ADD A UPS TO A SYSTEM IN PARALLEL
OPERATION OR TO A FUNCTIONING SINGLE UPS.
6.5. HOW TO REPLACE A FAULTY UPS IN AN OPERATIONAL
PARALLEL SYSTEM.
7. CONTROL PANEL WITH LCD.
7.1. GENERAL INFORMATION FOR THE SERIES.
7.1.1. Information represented by the display.
7.1.2. Common messages shown on the LCD display.
7.1.3. Common abbreviations shown on the display.

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7.2. CONTROL PANEL.
7.2.1. Audible alarms.
7.2.2. Optical indications.
7.2.3. Location of the setting parameters on the display.
7.2.4. Settings.
7.2.5. Operating mode / Description of state.
7.2.6. Warning or alert codes.
7.2.7. Error or fault codes.
7.2.8. Warning or alert indicators.
8. MAINTENANCE, WARRANTY AND SERVICE.
8.1. BATTERY MAINTENANCE.
8.1.1. Notes for the installation and replacement of the battery.
8.2. UPS TROUBLESHOOTING GUIDE.
8.2.1. Troubleshooting guide.
8.3. WARRANTY CONDITIONS.
8.3.1. Terms of the warranty.
8.3.2. Exclusions.
8.4. TECHNICAL SERVICES NETWORK.
9. ANNEXES.
9.1. GENERAL TECHNICAL SPECIFICATIONS.
9.2. GLOSSARY.
SLC TWIN RT2 T UNINTERRUPTIBLE POWER SUPPLIES (UPS)USER MANUAL

4SALICRU
SALICRU
1. INTRODUCTION.
1.1. THANK YOU LETTER.
We thank you in advance for the trust placed in us in the
purchasing of this product. Read this instruction manual
carefully in order to familiarise yourself with its content, since
the more you know and understand the device the greater
your satisfaction, level of safety and optimisation of its
functionalities will be.
We remain at your disposal for any additional information or
queries that you may wish to make.
Yours sincerely.
•The device described here is capable of causing sig-
nificant physical injury if improperly handled. For this
reason, its installation, maintenance and/or repair must be
carried out exclusively by our staff or qualified personnel.
•Although no effort has been spared to ensure that the in-
formation in this user manual is complete and accurate,
we accept no liability for any errors or omissions that may
exist.
The images included in this document are for illustrative
purposes and may not exactly represent the parts of the
device shown; therefore they are not contractual. However,
any divergence that may arise will be remedied or solved
with the correct labelling on the unit.
•Following our policy of constant evolution, we reserve the
right to modify the characteristics, operations or ac-
tions described in this document without prior notice.
•Reproduction, copying, assignment to third parties,
modification or total or partial translation of this
manual or document, in any form or by any means, without
previous written permission by us is prohibited, with
the company reserving full and exclusive property rights
over it.

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2. SAFETY INFORMATION.
2.1. USING THIS MANUAL.
The documentation of any standard equipment is available to the
customer on our website for download (www.salicru.com).
•For devices ‘powered by socket,’ this is the website for
obtaining the user manual and ‘Safety Instructions’
EK266*08.
•For devices with ‘permanent connection’ via terminals, a
CD-ROM or pen drive containing all necessary information
for connection and startup, including ‘Safety Instructions’
EK266*08, may be supplied with it.
Before carrying out any action on the device relating to its in-
stallation or startup, change of location, configuration or han-
dling of any kind, carefully read the safety instructions.
The purpose of the user manual is to provide information re-
garding safety and explanations of the procedures for installa-
tion and operation of the equipment. Read them carefully and
follow the steps indicated in the order established.
Compliance with the ‘Safety Instructions’ is
obligatory, with the user being legally responsible
for observing and applying them.
The device is delivered properly labelled for correct identifica-
tion of each of its parts, which, together with the instructions
described in this user manual, allows installation and startup
operations to be performed in a simple and organised manner
without any doubts whatsoever.
Finally, once the equipment is installed and operating, it is rec-
ommended to save the documentation downloaded from the
website, CD-ROM or pen drive in a safe and easy-to-access
place, for any future queries or doubts that may arise.
The following terms are used interchangeably in the document
to refer to:
•‘SLC TWIN RT2 T UL,’ ‘TWIN,’ ‘RT2 T UL,’ ‘device,’ ‘unit’
and ‘UPS’ - Uninterruptible power supply.
Depending on the context of the phrase, it can refer either
to the actual UPS itself or to the UPS and the batteries,
regardless of whether it is all assembled in the same metal
enclosure or not.
•‘Batteries’ or ‘accumulators’ - Bank or set of elements
that stores the flow of electrons by electrochemical means.
•‘T.S.S.’ - Technical Service and Support.
•‘Customer,’ ‘installer,’ ‘operator’ or ‘user’ - These are
used interchangeably and by extension to refer to the in-
staller and/or operator who will carry out the corresponding
actions, and the same person may be responsible for car-
rying out the respective actions when acting on behalf, or
in representation, of the above.
2.1.1. Conventions and symbols used.
Some symbols may be used and appear on the device, batteries
and/or in the context of the user manual.
For more information, see Section 1.1.1 of the ‘Safety
Instructions’document EK266*08.
2.2. WIRING CONSIDERATIONS.
Only use harmonised VDE or UL cables for powering the loads
connected to the UPS.
SLC TWIN RT2 T UNINTERRUPTIBLE POWER SUPPLIES (UPS)USER MANUAL

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3. QUALITY ASSURANCE AND STANDARDS.
3.1. STATEMENT BY THE MANAGEMENT.
Our goal is customer satisfaction, therefore this Management
has decided to establish a Quality and Environment Policy,
through the implementation of a Quality and Environmental
Management System that will enable us to comply with the
requirements demanded in the ISO 9001 and ISO 14001 and
also by our Customers and Stakeholders.
Likewise, the management of the company is committed to
the development and improvement of the Quality and Environ-
mental Management System, through:
•Communication to the entire company of the importance
of satisfying both the customer's requirements as well as
legal and regulatory requirements.
•The dissemination of the Quality and Environment Policy
and the setting of the Quality and Environment objectives.
•Conducting reviews by the Management.
•Providing the necessary resources.
3.2. STANDARDS.
The SLC TWIN RT2 T UL is designed, manufactured and sold in
accordance with Quality Management Standard EN ISO 9001.
The EC marking indicates conformity with EU Directives:
•2014/35/EU - Low voltage safety.
•2014/30/EU - Electromagnetic compatibility [EMC]
•2011/65/EU - Restriction of the use of hazardous substances
in electrical and electronic equipment [RoHS]
In accordance with the specifications of harmonised standards:
•EN-IEC 62040-1. Uninterruptible power supplies [UPS].
Part 1.1: Safety requirements.
•EN-IEC 62040-2. Uninterruptible power supplies [UPS].
Part 2: Electromagnetic compatibility [EMC] requirements.
WARNING!
SLC TWIN RT2 T UL 6 and 10kVA. This is a category
C3 UPS. This is a product for commercial and industrial
application in the second environment; Installation
restrictions or additional measures may be necessary
to avoid disturbances. It is not appropriate to use this
device in basic life support applications [BLS], where a
failure of the former can render vital equipment out of
service or significantly affect its safety or effectiveness.
It is also not recommended in medical applications,
commercial transport, nuclear installations, or other
applications or loads, where a failure of the product
can lead to personal or material damage.
The EC declaration of conformity of the product is
available to the customer upon express request to our
offices.
And UL, CSA and FCC markings in accordance with the speci-
fications of standards:
•UL 1778
•CSA C22.2 NO.107.3.-14
•FCC part 15 Subpart B
ELECTROMAGNETIC COMPATIBILITY WARNING
(FCC):
•SLC TWIN RT2 T UL 6 and 10kVA. This UPS has been tested
and meets the limits for a Class B digital device, pursuant to
the FCC Part 15 standard. These limits are defined to provide
reasonable protection against harmful interference when
the device operates in a commercial environment.
This device generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference
to radio communications. Operation of this UPS in a
residential environment may cause harmful interference, in
which case the user must correct the interference at their
own expense.
The manufacturer is not liable in the event of modifica-
tion or intervention on the device by the user.
WARNING CONCERNING BATTERIES (UL):
•Maintenance of the batteries must be carried out or super-
vised by personnel who have knowledge of the batteries
and the necessary precautions.
•Batteries should not be replaced by the operator or user.
•When changing batteries, replace them with the same type
and number.
•Caution:: Do not dispose of batteries in fire, as they
may explode.
•Caution: Do not open or break apart batteries. The
electrolyte discharged can be harmful to the skin
and eyes. It can be toxic.
•Caution: Batteries can pose a risk of electrocution
and cause a high short-circuit current. The following
precautions should be observed when working with them:
a. Remove any watches, rings or other metal objects.
b. Use tools with insulated handles.
c. Wear gloves and rubber boots.
d. Do not leave tools or metal objects on top of the bat-
teries.
e. Disconnect the power source before connecting or dis-
connecting the battery terminals.
f. Determine whether the battery is accidentally earthed.
If so, disconnect the power source. Contact with any
part of a battery that is earthed can cause electrocution.
The likelihood of electrocution can be reduced if
such connections are eliminated during installation
and maintenance (applicable to devices and battery
cabinets that do not have a power circuit connected to
earth).

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3.3. ENVIRONMENT.
This product has been designed to respect the environment and
manufactured in accordance with ISO 14001.
Recycling of the device at the end of its useful life:
Our company undertakes to use the services of authorised and
regulatory companies to treat the set of products recovered at
the end of their useful life (contact your distributor).
Packaging:
For the recycling of the packaging there must be compliance
with the legal requirements in force, in accordance with the
specific regulations of the country where the device is installed.
Batteries:
Batteries pose a serious danger to health and the environment.
The disposal of them shall be carried out in accordance with
the laws in force.
SLC TWIN RT2 T UNINTERRUPTIBLE POWER SUPPLIES (UPS)USER MANUAL

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4. PRESENTATION.
4.1. VIEWS.
4.1.1. Views of the device.
In Fig. 3 to Fig. 6, illustrations of the device are shown ac-
cording to enclosure size in relation to the power rating of the
model. However, because the product is constantly evolving,
discrepancies or slight contradictions may arise. If in any doubt,
the labelling on the device itself will always prevail.
The nameplate of the device shows all of the values re-
lating to its main properties and characteristics. Act
accordingly for its installation.
Control panel with LCD
Plastic front trim
BATTERY LINEBYPASS FAULT
Fig. 1. Front view of 6 and 10kVA models.
Fig. 2. Front view of the battery module.
ISO PACK
Fig. 3. Front view of the isolation transformer.

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Connector for
external EPO
Connector for connection to
external battery module
Output terminals,
earth, input
Manual Bypass
auxiliary contact
Input
switch
COM port
USB
RS-232 port Smart slot
protective cover
Digital
input/output
Current signal bus
for parallel systems
Communication bus
for parallel systems
Fans
Fig. 4. Rear view of 6 and 10kVA models.
Battery module output
circuit breaker
Connector for external
battery module
Fig. 5. Rear view of the battery module.
Output
terminals
Input
terminals
Output earth
terminal
Input earth
terminal
Connection port for transformer
temperature signal
Fig. 6. Rear view of the isolation transformer.
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4.2. DEFINITION OF THE PRODUCT.
4.2.1. Nomenclature.
SLC-6000-TWIN RT2 T UL WCO EE29503
MOD BAT TWIN RT2 T UL 2x6AB003 40A WCO EE29503
IT T-6 R TWIN RT2 WCO EE29503
EE* Special customer specifications.
CO ‘Made in Spain’ marking on UPS and packaging
(for customs purposes).
W Private-label device.
UL Marking reference.
T Indicates isolation transformer at the output.
TWIN RT2 Device series.
6000 Power in VA.
EE* Special customer specifications.
CO ‘Made in Spain’ marking on UPS and packaging
(for customs purposes).
W Private-label device.
40A Protection size.
003 Last three digits of the battery code.
AB Initials of the battery family.
6 Number of batteries in one branch.
2x Number of branches in parallel. Disregard for one.
TWIN RT2 Battery module series.
BATT MOD Battery module.
EE* Special customer specifications.
CO ‘Made in Spain’ marking on UPS and packaging
(for customs purposes).
W Private-label device.
TWIN RT2 Isolation transformer series.
6 Power in kVA.
IT-T Isolation transformer.
Note related to the batteries.
Before connecting a module or group of batteries to the
device or another available module, it is necessary
to check that the voltage value printed on the back of
the device next to the battery connector is appropriate
and that the polarity between the means of connection
corresponds.

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4.3. OPERATING PRINCIPLE.
This manual describes the installation and operation of SLC
TWIN RT2 T UL series UPSs as devices that can be independently
operated or connected in parallel. SLC TWIN RT2 T UL series
UPSs ensure optimum protection of any critical load, maintaining
the supply voltage of the loads between the specified parameters
without interruption during failure, deterioration or fluctuation of
mains power.
Thanks to their PWM (pulse width modulation) and double-
conversion technology, SLC TWIN RT2 T UL series UPSs are
compact, cool, silent and high performance.
The double converter principle eliminates all mains power
disturbances. A rectifier converts the AC current of the mains into
DC current, thereby maintaining optimum battery charge level
and powering the inverter, which, in turn, generates a suitable
AC sine-wave voltage for continuously powering the loads.
In addition, the standard transformer at the output provides
the possibility of galvanic isolation and effective filtering of
disturbances and electrical noise coming from the mains. In the
event of failure of the UPS’s mains power, the batteries supply
clean power to the inverter.
The design and construction of the SLC TWIN RT2 T UL series
UPS has been carried out in accordance with international
standards, and also allows expansion through the connection of
additional modules (3) with the same power in parallel to obtain
N+X redundancy or an increase in the system’s power.
Thus, this series has been designed to maximise the availability
of critical loads and to ensure that your business is protected
from variations in power distribution line voltage, frequency,
electrical noise, cuts and micro-cuts. This is the primary goal of
SLC TWIN RT2 T UL series UPSs.
This manual applies to the standardised models shown in Tab. 1.
4.4. UPS OPERATING MODES.
•Normal mode.
Device running supplying output voltage from the inverter.
Mains power present with correct input voltage and
frequency.
•Battery mode.
Device running with mains voltage or frequency out of
range or without AC input power, either due to mains
failure or absence of cable connection, supplying output
voltage from the batteries.
•Bypass mode.
Device running or not, supplying output voltage directly
from the AC mains.
With the inverter running, this operating mode may be
due to an overload, blockage or inverter fault.
The actions for each incident will be as follows: Reduce
the load connected to the output, unblock the device by
resetting it - stop it and start it up again - and, if the
blockage or fault remains, contact our T.S.S.
With the inverter shut down, the output supplies mains
power directly through the static bypass of the device
provided that it has AC input power.
•Frequency converter (CF) mode.
Operating mode of the UPS as a frequency converter. In
this mode, the static bypass is disabled by the condition of
disparate input and output frequencies.
Even if the LCD on the backlit control panel shows
messages, it does not mean that the inverter is
operational. It is switched on by pressing the ‘ON’
button on the control panel, see Chapter 6.
4.4.1. Notable features.
•True on-line with double-conversion technology and output
frequency separate from the mains.
•Output power factor 1. Pure sine waveform, suitable for
almost all kinds of loads.
•Input power factor > 0.99 and high overall efficiency > 0.93.
Greater energy savings and lower user installation costs
(wiring), as well as low distortion of the input current,
which reduces pollution in the power supply network.
•Great adaptability to the worst conditions of the mains.
Wide input voltage, frequency and waveform ranges, thus
avoiding excessive dependence on limited battery power.
•Possibility of fast and easy backup extension by adding
modules in rack format (up to 3). Each battery module has
two connectors for easy connection to the device and other
identical modules.
•N+X redundant parallel connection to increase reliability
and flexibility with a maximum of 3 devices in parallel.
•Selectable high-efficiency mode (ECO MODE) > 0.93. Energy
savings, economically beneficial to the user.
•Possibility of starting the device without mains power
supply or discharged battery (Cold Start). Be careful
with this aspect because the greater the batteries are
discharged, the more the backup will be reduced.
•Intelligent battery management technology is very useful
for extending the life of accumulators and optimising
recharge times.
•Standard communication options via the RS-232 serial port
or USB port.
•Digital output for ‘Error or fault’ warning.
•Remote emergency power off control (EPO).
•Control panel with LCD available on all models and LED
indicator lights.
•Availability of optional connectability cards to improve
communication capabilities.
•Device that can be installed as a tower or rack using the
accessories supplied. The control panel can be rotated to
adapt to either format.
•The isolation transformer provides galvanic isolation in
order to completely isolate the output from the input and/or
change the neutral point treatment.
The placement of an electrostatic screen between the
primary and secondary windings of the transformer provides
a high level of electrical noise attenuation.
Physically, the isolation transformer module is located at
the output of the UPS, enabling several output voltages
(see Fig. 17 to Fig. 20).
Model Type Input/output type
SLC-6000-TWIN RT2 T UL Standard single-phase /
single-phase
SLC-10000-TWIN RT2 T UL
Tab. 1. Standardised models.
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4.5. OPTIONAL EXTRAS.
Depending on the configuration chosen, the device can include
any of the following options:
4.5.1. Exterior manual maintenance bypass.
The purpose of this option is to electrically isolate the device
from the mains and the critical loads without cutting the power
to the latter. In this way, maintenance or repair operations on
the device can be carried out without interruptions to the power
supply of the protected system, while preventing unnecessary
hazards for the technical personnel.
4.5.2. Communication card.
The UPS features a slot at the rear for inserting one of the fol-
lowing communication cards.
4.5.2.1. Integration into computer networks using an SNMP
adapter.
Large computer systems based on LANs and WANs that
integrate servers in different operating systems must provide
the system manager with ease of control and administration.
This facility is obtained through an SNMP adapter, which
is universally supported by the main software and hardware
manufacturers.
Connection of the UPS to the SNMP is internal while that of the
SNMP to the computer network is made through an RJ-45 10
base connector.
4.5.2.2. RS-485 modbus.
Large computer systems based on LANs and WANs often re-
quire that communication with any element that is integrated
into the computer network be made through a standard indus-
trial protocol.
One of the most used standard industrial protocols on the
market is the MODBUS protocol.
4.5.2.3. Relay interface.
•The UPS has, as an option, a relay interface card that provides
digital signals in the form of potential-free contacts, with a
maximum applicable voltage and current of 240V AC or 30V
DC and 1A.
•This communication port enables dialogue between the
device and other machines or devices through the relays
supplied in the terminal block arranged on the same card,
with a single common terminal for all of them.
From the factory, all contacts are normally open and can be
changed one by one, as indicated in the information supplied
with the optional extra.
•The most common use of these types of ports is to provide
the necessary information to the file-closing software.
•For more information, contact our T.S.S. or our nearest
distributor.
4.5.3. Extendable guide kits for mounting in a rack cabinet.
An extendable and unique guide kit is available for all device
models, valid for any kind of rack-type cabinet.
These guides allow the installation of any TWIN RT2 T UL de-
vice unit and possible battery modules in the case of extended
backups, as if it were a rack in its respective cabinet.

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5. INSTALLATION.
•Read and respect the Safety Information, described
in Chapter 2 of this document. Failure to obey some
of the instructions described in this manual can result in a
serious or very serious accident to persons in direct contact
or in the vicinity, as well as faults in the device and/or loads
connected to it.
•In addition to the device’s own user manual, other documents
are supplied on the CD-ROM or documentation pen drive.
Consult them and strictly follow the indicated procedure.
•Unless otherwise indicated, all actions, instructions,
guidelines and notes are applicable to the devices, whether
or not they form part of a parallel system.
5.1. RECEPTION OF THE DEVICE.
•Pay attention to section 1.2.1. of the safety instructions
-EK266*08- in all matters relating to the handling,
movement and siting of the unit.
•Use the most suitable means to move the UPS while it is
packed, with a pallet jack or forklift.
•Any handling of the device must be carried out in accordance
with the weights shown in the technical specifications
according to the model, indicated in Chapter 9. Annexes.
5.1.1. Reception and contents.
•Reception. Check that:
The data on the label affixed to the packaging
corresponds to that specified on the order. Once the
UPS is unpacked, check the previous data with those of
the device nameplate.
If there are discrepancies, report the issue as soon as
possible, citing the device’s manufacturing number and
delivery note references.
It has not suffered any mishaps during transportation
(packaging and impact indicator in perfect condition).
Otherwise, follow the protocol indicated on the label
attached to the impact indicator, located on the
packaging.
•Unpacking.
To check the contents, it will be necessary to remove
the packaging.
Complete the unpacking according to the
procedure of section 5.1.3.
•Contents.
6 to 10kVA device:
–1 UPS.
–Information for warranty registration.
–The user manual in CD-ROM or pen drive format.
–2 metal pieces for use as handles and screws for
installing the UPS in a rack cabinet.
–1 USB cable.
–4 plastic pieces for use as a base to facilitate the
arrangement of the UPS as a tower (vertical position).
–1 cable for connecting the communication bus.
Useful only for connection to a parallel device.
–1 cable for connecting the current bus. Useful only
for connection to a parallel device.
Battery module:
–1 battery module.
–Information for warranty registration.
–2 metal pieces for use as handles and screws for
installing the unit in a rack cabinet.
–2 plastic extensions of 2U to extend the base of the
UPS + 1 metal piece to allow the arrangement of
the attached battery module as a tower.
–1 cable for interconnecting the battery module and
another module.
Isolation transformer module:
–1 isolation transformer module.
–Information for warranty registration.
–2 metal pieces for use as handles for installing the
unit in a rack cabinet.
–2 plastic extensions of 2U + 2 extensions of
1U+1metal piece to allow the arrangement of the
attached battery module as a tower.
•Once the reception is completed, it is advisable to re-pack
the UPS until it is put into service in order to protect it
against mechanical shock, dust, dirt, etc.
•The packaging of the device consists of a wooden pallet,
cardboard or wooden box, depending on the item, expanded
polystyrene corners, polyethylene cover and strapping, all
of which are recyclable materials. When the packaging
requires disposal, it must be carried out in accordance with
current laws.
We recommend keeping the packaging for at least 1 year.
5.1.2. Storage.
•The device storage shall be done in a dry, ventilated place
and protected from rain, dust, water splashes or chemical
agents. It is advisable to keep each device, battery module
and isolation transformer in its original packaging, as it has
been specifically designed to ensure maximum protection
during transportation and storage.
•For devices that contain Pb-Ca batteries, the
charging times indicated in Tab. 2 of document
EK266*08, determined by the temperature to which they
are exposed, must be respected, otherwise the warranty
may be invalidated.
•After this period, connect the device to the mains together
with the battery unit if applicable, start it according to the
instructions described in this manual and charge for 12hours.
In parallel systems, it is not necessary to interconnect de-
vices before battery charging. Each of them can be treated
independently to charge them.
•Then shut down the device, disconnect it and store the UPS
and batteries in their original packaging, noting the new
date for recharging the batteries on a document as a record
or even on the packaging itself.
•Do not store the devices where the ambient temperature
exceeds 50°C or drops below -15°C, as this may cause
degradation of the electrical characteristics of the batteries.
SLC TWIN RT2 T UNINTERRUPTIBLE POWER SUPPLIES (UPS)USER MANUAL

14 SALICRU
5.1.3. Unpacking.
•The packaging of the device consists of a cardboard box,
expanded polystyrene (EPS) or polyethylene foam (EPE)
corners, polyethylene cover and strapping, all of which are
recyclable materials; consequently, if it requires disposal,
it must be carried out in accordance with current laws. We
recommend keeping the packaging in case it needs to be
used in the future.
•Proceed as follows:
Cut the straps around the cardboard box.
Remove the accessories (cables, brackets, etc.).
Remove the device, battery module and isolation trans-
former from the box with the help, if necessary, of a
second person depending on the weight of the model
or using appropriate mechanical means.
Remove the protective corners from the device and the
plastic bag.
Do not leave the plastic bag within the reach of
children to avoid the danger of suffocation.
Inspect the device before proceeding and, in the event
of finding damage, contact the supplier or, failing that,
our firm.
5.1.4. Transport to the site.
It is recommended to transport the devices by means of a
pallet jack or the most appropriate method considering the
distance between the two points.
If the distance is considerable, it is recommended to trans-
port the device in its packaging to the installation site and
then unpack it.
5.1.5. Siting, immobilising and considerations.
•All TWIN RT2 T UL series UPSs are designed to be mounted
as a tower model - vertical arrangement of the device - or
rack - horizontal arrangement - for installation in 19” cabi-
nets, regardless of whether they operate independently or as
parallel systems, whether or not they have a battery module
or whether the available backup is standard or extended.
Follow the instructions indicated in the sections relating to
either of the two possibilities, according to the particular
configuration of your device.
•Fig. 9 to Fig. 11 show, by way of example, illustrations of
a device with or without its battery module and isolation
transformer. These illustrations provide help and guidance
on the steps to follow, but the instructions are not intended
to refer to a single model, although, in practice, the actions
to be carried out are always the same for all of them.
•For all instructions regarding connections, refer to section
5.2.
5.1.5.1. Rotation of the control panel with LCD.
Fig. 7. Rotation of the control panel with LCD on the
plastic front trim.
•To facilitate the reading of messages on the display when
the device is installed vertically, it is possible to rotate the
control panel clockwise by 90º (see Fig. 7).
•Likewise, reverse the rotation of the control panel if a
device arranged as a tower needs to be installed as a rack.
In this case, the rotation of the control panel will be anti-
clockwise.
•Proceed as follows:
Insert fingertips into the recesses of the plastic trim
around the display and pull outwards.
Rotate the control panel with LCD 90º to the right with
respect to its initial position and insert it back into the
front.
5.1.5.2. Vertical tower-type mounting.
The set is supplied with two sets of feet and 4 extensions
(2short and 2 long) that are used to install the UPS module plus
battery module and transformer in 7U.
•Assembly feet and extensions as shown in Fig. 8.
2U extensions 1U extensions
Feet
Fig. 8. Set of feet with extensions.
•Place the UPS, battery module and isolation transformer up-
right between the two bases, similar to as shown in Fig.9.

15
To install the battery module and the transformer, follow the
steps described above for the UPS until obtaining the assembly
shown in Fig. 11.
Fig. 11. Mounting the set in a 19” rack cabinet.
5.1.5.4. Preliminary considerations before connection.
•In the description of this manual, reference is made to the
connection of terminals and switch operations that are
only available in some versions or devices with extended
backup. Ignore the related operations if your unit does not
feature them.
•Thermal control of these devices is carried out with the
passage of forced air from the front to the rear.
The front surface and about 15cm on the rear side should
be left free of obstructions to facilitate the free circulation
of air for ventilation.
•Follow and respect the instructions described in this sec-
tion referring to the installation of a single device or a
system in parallel.
•Protection or external manual bypass board:
The system will have at least one short-circuit protec-
tion on the UPS’s power supply line.
It is advisable to have an external manual bypass board
fitted with input, output and manual bypass protections
in single systems.
For parallel systems, it is essential to have a distri-
bution or manual bypass board. The board’s circuit
breakers must be able to isolate a UPS from the system
in the event of a fault and power the loads with the
others, either during periods of preventative mainte-
nance or during breakdown and repair.
•Upon request, we can supply an external manual bypass
board for a single device or parallel system.
You can also choose to manufacture it, taking into account
the version and configuration of the device or system avail-
able and the documentation contained in the CD-ROM or
pen drive relating to ‘Recommended installation’.
•In the documentation supplied with this user manual
and/or on the CD-ROM or pen drive, information is
available on ‘Recommended installation’ for each input and
output configuration. This documentation includes wiring
diagrams and information about the sizes of the protections
and the minimum cross sections of cables connected to the
device according to their rated working voltage. All values
Fig. 9. Vertically mounted tower-type model.
5.1.5.3. Mounting a rack in a 19” cabinet.
•To mount a device in a 19” rack cabinet, proceed as follows
(see Fig. 10 and Fig. 11):
Using the supplied screws, fix the two adapter angles
for use as handles on each side of the UPS, respecting
your hand.
To install the device in a rack cabinet, it is necessary
to have internal lateral guides for use as supports. Al-
ternatively, and upon request, we can supply universal
slides for use as guides, for installation by the user.
Mount the guides at the required height, ensuring
correct tightening of the fixing screws and appropriate
fitting in the machining, according to each case.
Place the device onto the guides and insert it all the
way to the back.
Depending on the device model and weight, and/or
whether it is installed in the upper or lower part of the
cabinet, it is recommended that two people carry out
the installation operations.
Fix the UPS to the frame of the cabinet using screws.
Fig. 10. Mounting a UPS in a 19” cabinet.
SLC TWIN RT2 T UNINTERRUPTIBLE POWER SUPPLIES (UPS)USER MANUAL

16 SALICRU
are calculated for a maximum total cable length of 30m
between the distribution board, device and loads.
For longer lengths correct the cross sections to avoid
voltage drops, respecting the regulations or standards
corresponding to the country.
In the same documentation and for each configuration,
information for ‘N’ units in parallel, as well as backfeed
protection characteristics, is available.
•In parallel systems, the length and cross section of
the cables that run from the distribution or manual
bypass board to each UPS and from these to the
board will be the same for all of them without exception.
•The cross section of the cables must always be considered
in relation to the size of the terminals of the switches, so
that they are correctly fastened across their entire cross
section for optimum contact between the two elements.
•Only rated currents are printed on the nameplate of the de-
vice as indicated by the EN-IEC62040-1 safety standard.
For the calculation of the input current, the power factor
and the device’s own performance have been considered.
Overload conditions are considered a non-permanent and
exceptional working mode, and will not be taken into ac-
count in the application of the protections. Do not connect
appliances or devices which may overload the UPS to the
terminals and/or outlets, such as motors.
•If peripheral input, output or bypass elements such as
transformers or autotransformers are added to the UPS or
parallel system, the currents indicated on the nameplates
of these elements must be taken into consideration in order
to use the appropriate cross sections, in compliance with
local and/or national low voltage electrotechnical regula-
tions.
•When a galvanic isolation transformer is added to a UPS
or parallel system as an optional extra, as standard or
independently, either on the input line, at the output or
both, it must be fitted with protection against indirect
contact (differential circuit breaker) at the output of each
transformer, since, due to its own insulation properties, it
will prevent the tripping of the protections placed on the
primary of the isolation transformer in case of electric shock
on the secondary (output of the isolation transformer).
•This device is suitable for installation in networks
with TT, TN-S, TN-C or IT power distribution systems,
taking into account at the time of installation the
particularities of the system used and the national electrical
regulations of the destination country.
•The SLC TWIN RT2 T UL features terminals for the instal-
lation of an external emergency power off button (EPO) or,
failing that, a single device must be installed to cut the
power supply to the loads in any operating mode.
5.1.5.5. Preliminary considerations before connection, regarding
the batteries and their protections.
•The battery protection of the device and of any accumulator
module is always by means of internal fuses that are not
accessible to the user.
•IMPORTANT FOR SAFETY: If batteries are
installed independently, the accumulator group
must be fitted with a bipolar circuit breaker or disconnect
fuse of the size indicated in Tab. 2.
•Inside the battery module, there are HAZARDOUS
VOLTAGES with risk of electric shock, so it is classified as a
RESTRICTED ACCESS AREA.
•Do not handle the fuse holder or battery circuit
breaker when the device is running.
•If the mains power of the device or parallel system
is cut for longer than a simple intervention and it is
expected that it will be out of service for a prolonged period
time, the system must be shut down completely.
•The battery circuit is not isolated from the input
voltage. Dangerous voltages can occur between the
terminals of the battery bank and the earth. Check that there
is no input voltage before intervening on the terminals.
5.1.5.6. Connection elements.
•All of the device’s electrical connections are made from the
back of each unit:
Input and output connection.
Terminals for powering the device and loads.
It is necessary to remove the transparent protective
cover to access the terminals.
Replace the cover after making the connec-
tions to prevent possible accidents due to
direct contact, especially in tower mountings as
there is a greater risk.
Connection to the isolation transformer: see section
5.2.1.1.
Connection to batteries.
–The device and battery module have a polarised
connector.
Remove the screws and protective cover of the
connector before interconnecting it.
–All battery modules have two connectors that
enable backup extension.
Communication connectors available:
–DB9 for RS-232 port.
–USB port to operate the UPS as a PC peripheral.
–Digital inputs and outputs (dry contacts).
–Connector for external EPO function button.
–Auxiliary contact for the manual bypass switch.
DB15 communication bus connectors and analogue cur-
rent signal block for connecting systems in parallel.
To access the signal block, it is necessary to remove its
protective cover.
Slot for the integration of one of the optional electronic
communication units. Remove the fixing screws and
plastic cover to enable it to be inserted.
•It is recommended to use terminals on all of the ends of
the cables connected to power terminals (input and output).
•Check that the terminal screws are correctly tightened.

17
5.2. CONNECTIONS.
5.2.1. Connection of the input and output of a ‘single’ device:
As the device has Class I protection against elec-
tric shock, it is essential to install a protective
earth conductor (connect earth ( )). Connect this con-
ductor before supplying voltage to the input terminals.
Connect the power cables to the input terminals
respecting the order of the phase (R) and the
neutral (N) indicated on the labelling of the device and
in this manual. Pay particular attention when
connecting the power cables to the input terminals and
do not reverse the connection to the output terminals
or vice versa. Failure to respect the order will result in
faults.
Where there are discrepancies between the labelling
and the instructions in this manual, labelling shall al-
ways prevail.
In accordance with safety standard EN-IEC62040-1, the
facility must be equipped with an automatic backfeed
protection system, such as a contactor, which prevents
the appearance of hazardous voltage or power on the
UPS input line during a mains failure (see Fig. 12).
The standard applies to both individual units and all
UPSs in a parallel system.
There can be no derivation of the line that goes
from the backfeed protection to the UPS, as this
would breach the safety standard.
Warning labels shall be affixed to all primary power
switches installed in areas remote from the device to
alert electrical maintenance personnel of the presence
of a UPS in the circuit.
The label shall bear the following text or an equivalent:
Before working on the circuit.
•Isolate the uninterruptible power supply system
(UPS).
•Check the voltage between all terminals, including
the protective earth.
Risk of UPS return voltage.
(3)
(2)
(1)
UPS
Input
Output
R (L)
U (L)
N
N
(1) Automatic backfeed protection system external to the UPS
(EN-IEC62040-1).
(2) Fuse holder and general purpose fuse 250V AC / 3A type F.
(3) 230V AC bipolar contactor with minimum contact spacing of 1.4 mm
and coil with same voltage and the minimum current indicated on the
nameplate of the UPS (input or bypass as appropriate).
For parallel systems, each device must have its own separate back-
feed protection.
Fig. 12. Backfeed protection wiring diagrams.
•Remove the protective cover of the terminal block from the
rear panel of the UPS and make connections according to
the following connection diagrams.
When starting the connection process, firstly con-
nect the earth connection and lastly disconnect it
when making the disconnection.
11
2-4. Single UPS Installation
Installation and wiring must be performed in accordance with the local electric laws/regulations and execute
the following instructions by professional personnel.
1) Make sure the mains wire and breakers in the building are enough for the rated capacity of UPS to
avoid the hazards of electric shock or fire.
NOTE: Do not use the wall receptacle as the input power source for the UPS, as its rated current is less than
the UPS’s maximum input current. Otherwise the receptacle may be burned and destroyed.
2) Switch off the mains switch in the building before installation.
3) Turn off all the connected devices before connecting to the UPS.
4) Prepare wires based on the following table:
Model
Wiring spec (AWG)
Input
Output
Ground
6KRT
6
6
6
6KRTL
6
6
6
10KRT
4
4
4
10KRTL
4
4
4
NOTE 1: The cable for 6KRT/6KRTL should be able to withstand over 40A current. It is recommended
to use 6 AWG or thicker wire for safety and efficiency.
NOTE 2: The cable for 10KRT/10KRTL should be able to withstand over 63A current. It is
recommended to use 4 AWG or thicker wire for safety and efficiency.
NOTE 3: The selections for color of wires should be followed by the local electrical laws and
regulations.
5) Remove the terminal block cover on the rear panel of UPS, Then connect the other wires according to
the following terminal block diagrams:
Connect the ground wire first when making wire connection. Disconnect the ground wire last when making
wire disconnection!
Terminal Block wiring diagram
Output earth Input earth
Input neutral
Input line
Output line
Output neutral
Fig. 13. Detail of the UPS’ connection terminals.
Output neutral
Output neutral
Line 2 input
Line 1 input
11
2-4. Single UPS Installation
Installation and wiring must be performed in accordance with the local electric laws/regulations and execute
the following instructions by professional personnel.
1) Make sure the mains wire and breakers in the building are enough for the rated capacity of UPS to
avoid the hazards of electric shock or fire.
NOTE: Do not use the wall receptacle as the input power source for the UPS, as its rated current is less than
the UPS’s maximum input current. Otherwise the receptacle may be burned and destroyed.
2) Switch off the mains switch in the building before installation.
3) Turn off all the connected devices before connecting to the UPS.
4) Prepare wires based on the following table:
Model
Wiring spec (AWG)
Input
Output
Ground
6KRT
6
6
6
6KRTL
6
6
6
10KRT
4
4
4
10KRTL
4
4
4
NOTE 1: The cable for 6KRT/6KRTL should be able to withstand over 40A current. It is recommended
to use 6 AWG or thicker wire for safety and efficiency.
NOTE 2: The cable for 10KRT/10KRTL should be able to withstand over 63A current. It is
recommended to use 4 AWG or thicker wire for safety and efficiency.
NOTE 3: The selections for color of wires should be followed by the local electrical laws and
regulations.
5) Remove the terminal block cover on the rear panel of UPS, Then connect the other wires according to
the following terminal block diagrams:
Connect the ground wire first when making wire connection. Disconnect the ground wire last when making
wire disconnection!
Terminal Block wiring diagram
11
2-4. Single UPS Installation
Installation and wiring must be performed in accordance with the local electric laws/regulations and execute
the following instructions by professional personnel.
1) Make sure the mains wire and breakers in the building are enough for the rated capacity of UPS to
avoid the hazards of electric shock or fire.
NOTE: Do not use the wall receptacle as the input power source for the UPS, as its rated current is less than
the UPS’s maximum input current. Otherwise the receptacle may be burned and destroyed.
2) Switch off the mains switch in the building before installation.
3) Turn off all the connected devices before connecting to the UPS.
4) Prepare wires based on the following table:
Model
Wiring spec (AWG)
Input
Output
Ground
6KRT
6
6
6
6KRTL
6
6
6
10KRT
4
4
4
10KRTL
4
4
4
NOTE 1: The cable for 6KRT/6KRTL should be able to withstand over 40A current. It is recommended
to use 6 AWG or thicker wire for safety and efficiency.
NOTE 2: The cable for 10KRT/10KRTL should be able to withstand over 63A current. It is
recommended to use 4 AWG or thicker wire for safety and efficiency.
NOTE 3: The selections for color of wires should be followed by the local electrical laws and
regulations.
5) Remove the terminal block cover on the rear panel of UPS, Then connect the other wires according to
the following terminal block diagrams:
Connect the ground wire first when making wire connection. Disconnect the ground wire last when making
wire disconnection!
Terminal Block wiring diagram
Input
earth
Input neutral
Output line X1
Output line X2
Output line X3
Output
earth
Fig. 14. Detail of the isolation transformer’s connection
terminals.
For an input voltage of 240V, the isolation trans-
former’s Line 1 input must be used. For an input
voltage of 208V, the Line 2 input must be used.
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18 SALICRU
5.2.1.1. Connection of the UPS’ output to the isolation
transformer’s input.
In the case of a 240V input:
UPS
Isolation transformer
Fig. 15. UPS - isolation transformer connection according
to the input voltage.
In the case of a 208V input:
Isolation transformer
UPS
Output line
Input line
Input neutral
+
Output neutral
Earth
Fig. 16. Diagram for connection of the UPS to the battery
module and isolation transformer.

19
5.2.2. Configuration of the output.
The output of the UPS must be connected to the input of the
isolation transformer (Fig. 16), with the output of the latter
being the final output of the UPS system.
We can opt for 4 different output configurations implementable
in the isolation transformer:
1. Option 1: There are 2 sets of outputs at 120V. Connecting a
load in X1-N and another in X3-N:
Output 1 Output 2
Fig. 17. Connection of 2 independent 120V windings.
2. Option 2: Connection of windings in parallel (only one
output of 120V / 100% load). Jump the circuit between
X1-X3 y N-N and connecting the load between X1 and N:
Output
Fig. 18. Connection of windings in parallel.
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20 SALICRU
3. Option 3: Jump the circuit between N and X3, 208V is
obtained in X2-N:
Output
Fig. 19. Connection for an output voltage of 208V.
4. Option 4: Jump the circuit between N and X3, 240V is
obtained in X1-N:
Output
Fig. 20. Connection for an output voltage of 240V.
•Do not connect loads that in their entirety exceed
the specifications of the device, as this would cause
inconvenient cuts in the power supply of the loads con-
nected to the output.
•If, in addition to the more sensitive ‘critical loads,’ it is
necessary to connect high-consumption inductive loads,
such as for laser printers or CRT monitors, the starting up
of these peripherals will need to be taken into account to
prevent the device from crashing.
We do not recommend connecting loads of this type due to
the amount of power they absorb from the UPS.
5.2.2.1. Connecting the loads.
•As the device has Class I protection against electric
shock, it is essential to install a protective earth
conductor (connect earth ( )). Connect this conductor be-
fore supplying voltage to the input terminals.
•Connect the loads to the output terminals of the isola-
tion transformer depending on the voltage we want (Fig.
17 to Fig. 20), respecting the order of the phase and
the neutral indicated on the labelling of the device and in
this manual (see Fig. 14). Where there are discrepancies
between the labelling and the instructions in this manual,
labelling shall always prevail.
To consider for preventing transformer faults.
The device features alerts and alarms that act pre-
ventively to safeguard the functional integrity of the inverter
or static bypass when rated power thresholds are exceeded,
overload.
The galvanic isolation transformer, which forms part of the
UPS assembly, is however the component that is most likely
to suffer irreversible damage due to bad practices, such as not
observing the limitation indicated below:
Connection of the two independent coils: each of which can
individually supply 50% of the total power of the UPS.
There is a high risk of burning out one of them if loads greater
than 50% of the rated power of the UPS are applied.
Example: The case of a total power of 80% connected to the
output, with a distribution of 65% on one of the coils and the
remaining 15% on the other. Although in this case there is
no apparent overload, due to the distribution, the overloaded
winding will burn out without any overload detection.
•With regard to the protection that must be placed at the
output of the UPS, we recommend distributing the output
power over at least four lines. Each of them will have a cir-
cuit breaker with a value of one quarter of the rated power.