Riello MCT 10 Guide

I NTRODUCTION
Thank you for choosing our product.
Our company is specialised in designing, developing and manufacturing uninterruptible power supplies (UPS).
The UPS described in this manual is a high quality product which has been carefully designed and built in order to guarantee
the highest levels of performance.
This manual contains detailed instructions for using and installing the product.
For information about using and getting the most out of your appliance, this manual must be stored with care in the
vicinity of the UPS and CONSULTED BEFORE OPERATING ON IT.
NOTE: Some images contained within this document are for indication purposes only and therefore may not identically match
the products in use.
E NVIRONMENTAL PROTECTION
During the development of its products, the company uses extensive resources with regards to all environmental aspects.
All our products pursue the objective defined in the environmental management system developed by the company in
compliance with standards in force.
No hazardous materials such as CFC, HCFC or asbestos are used in this product.
When evaluating packaging, the choice of material has been made favouring recyclable materials.
For correct disposal, please separate and identify the type of material of which the packaging is made in the table below.
Dispose of all material in compliance with standards in force in the country in which the product is used.
D ESCRIPTION M ATERIAL
Pallet Heat-treated pine
Packaging corner Stratocell/cardboard
Box Cardboard
Adhesive pad Stratocell
Protective bag HD Polyethylene
D ISPOSING OF THE PRODUCT
The UPS contains internal material that (in case of dismiss / disposal) are considered TOXIC and HAZARDOUS WASTE, such
as electronic circuit boards and batteries. Treat these materials according to the laws applicable referring to qualified service
personnel. Their proper disposal contributes to respect the environment and human health.
© The reproduction of any part of this manual, in whole or in part, is forbidden without the prior consent of the manufacturer.
In order to make improvements, the manufacturer reserves the right to modify the product described at any moment and without notice.

C ONTENTS
OVERVIEW 5
M ULTI S ENTRY 5
MCT VIEWS 6
MST VIEWS 7
V IEW OF THE UPS C ONNECTIONS 8
V IEW OF THE C ONTROL P ANEL 9
B ATTERY B OX ( OPTIONAL ) 10
S EPARATE B YPASS I NPUT ( OPTIONAL ) 11
I NTERNAL T RANSFORMER 11
A DDITIONAL I NTERNAL B ATTERY C HARGERS 11
INSTALLATION 12
S TORING THE UPS AND THE B ATTERY B OX 12
P REPARING FOR INSTALLATION 12
P RELIMINARY I NFORMATION 12
E LECTROMAGNETIC C OMPATIBILITY 13
I NSTALLATION E NVIRONMENT 13
R EMOVING THE UPS AND THE B ATTERY B OX FROM THE P ALLET 14
P RELIMINARY C HECK OF C ONTENTS 16
I NSTALLING THE UPS AND THE B ATTERY B OX 16
S TEPS TO BE T AKEN TO G AIN A CCESS TO THE T ERMINALS OF THE UPS / B ATTERY B OX 16
E LECTRICAL C ONNECTIONS 17
W IRING DIAGRAMS FOR C ONNECTING TO THE E LECTRICAL S YSTEM 17
I NTERNAL P ROTECTIVE D EVICES OF THE UPS 20
E XTERNAL P ROTECTIVE D EVICES 21
C ROSS S ECTION OF THE C ABLES 22
C ONNECTIONS 22
C ONNECTIONS OF THE MODEL WITH SEPARATE BYPASS 23
R.E.P.O. 23
E XTERNAL S YNC 23
C ONNECTING THE R EMOTE M AINTENANCE B YPASS 24
C ONNECTING THE B ATTERY B OX TO THE UPS 26
M ULTIPLE E XPANSIONS 27
S ETTING THE R ATED B ATTERY C APACITY – S OFTWARE C ONFIGURATION 27

E
XTERNAL T EMPERATURE P ROBE 28
R EMOTE PANEL ( OPTIONAL ) 28
USE 29
D ESCRIPTION 29
P RELIMINARY O PERATIONS 30
P OWERING ON FOR THE F IRST T IME 31
P OWERING ON FROM THE M AINS 32
P OWERING ON FROM THE B ATTERY 32
P OWERING OFF THE UPS 32
G RAPHIC D ISPLAY 33
D ISPLAY M ENUS 34
O PERATING M ODES 35
M AINTENANCE B YPASS (SWMB) 35
R EDUNDANT A UXILIARY P OWER S UPPLY FOR A UTOMATIC B YPASS 36
P ROGRAMMABLE A UXILIARY S OCKET ( POWER SHARE ) 36
P OWER WALK - IN 36
R EDUCING THE L OAD ( TO 200V AND 208V) 36
C ONFIGURING THE UPS 37
C OMMUNICATION P ORTS 39
RS232 AND USB C ONNECTORS 39
C OMMUNICATION S LOTS 39
AS400 P ORT 40
B UZZER 41
S OFTWARE 42
M ONITORING AND C ONTROL S OFTWARE 42
C ONFIGURATION S OFTWARE 42
TROUBLESHOOTING GUIDE 43
S TATUS / ALARM C ODES 47
TECHNICAL DATA 51

OVERVIEW
M ULTI S ENTRY
The UPS units of the Multi Sentry 10 – 12 – 15 – 20 kVA range (VFI-SS-111 type) have been designed using the latest
technology available today so as to guarantee users maximum performance. The use of the new control PCBs based on
multiprocessor architecture (DSP + µP inside) together with high frequency IGBT technology offers excellent performance both
in the input stage (absorbed current harmonic distortion ≤3%) and in output (output voltage distortion ≤1%).
Thanks to these and many other features plus the easy-to-use design, the Multi Sentry represents a new reference standard in
the three-phase UPS sector.
Depending on user requirements, there are two different versions available:
MCT
The Multi Sentry MCT version stands out by its
compact size and new, modern design. These
features make it suitable for any environment.
MST
The Multi Sentry MST version, offers longer
autonomy than the MCT version, thanks to the
possibility to double the number of batteries inside the
cabinet.
10 kVA 12 kVA 15 kVA 20 kVA
Nominal power 10000 VA
9000 W
12000 VA
10800 W
15000 VA
13500 W
20000 VA
18000 W
Output power factor 0.9 0.9 0.9 0.9
Weight (with
batteries)
MCT 180 Kg 182 Kg 190 Kg 195 Kg
MST 305 Kg 310 Kg 315 Kg 320 Kg
W x D x H
MCT 320 x 840 x 930 mm
MST 440 x 850 x 1320 mm
Accessories Battery cabinets – Communication boards – Remote mimic panel

MCT VIEWS
Battery start button (COLD START)
Brake rod
Manual bypass switch Slots for accessory communication cards
Battery fuse holder isolator Communication ports (AS400, USB, RS232)
Output switch
Powershare sockets (10A max. total on the two
sockets) and relative protection
Separate bypass switch (optional) Ventilation fans
Input switch Parallel PCB (optional)
Terminal cover panel 1/0 main power switch

MST VIEWS
Battery start button (COLD START)
Brake rod
Manual bypass switch Slots for accessory communication cards
Battery fuse holder isolator Communication ports (AS400, USB, RS232)
Output switch
Powershare sockets (10A max. total on the two
sockets) and relative protection
Separate bypass switch (optional) Ventilation fans
Input switch Parallel PCB (optional)
Terminal cover panel Remote Emergency Power Off (R.E.P.O.)

V IEW OF THE UPS C ONNECTIONS
Connection for the R.E.P.O command (Remote Emergency Power Off)
(see previous page for the MST version)
Power connections: BATTERY, INPUT, SEPARATE BYPASS (optional), OUTPUT
Connection for remote maintenance bypass command
Connection for external Battery Box temperature probe
Connection for external synchronization signal
Slot for power relay board

V IEW OF THE C ONTROL P ANEL
Graphic display Function keys *
Left-hand LEDs area: Right-hand LEDs area:
Mains power LED Stand-by / alarm LED
Battery power LED Battery low LED
Load on bypass LED ECO mode LED
* The function of each key is indicated at the bottom of the display and varies according to the menu used.

B ATTERY B OX ( OPTIONAL )
THE BATTERY BOX IS AN OPTIONAL ACCESSORY.
The Battery Box contains batteries that increase the operating time of the UPS during prolonged black-outs. The number of
batteries contained in it will vary according to the type of UPS to which the Battery Box is to be installed. The utmost attention
must be paid to ensure that the battery voltage of the Battery Box corresponds to that supported by the UPS.
Additional Battery Boxes may be connected in a chain to obtain the desired autonomy time during a power failure.
This series of Battery Box contains two separate strings of batteries, one with a positive voltage and the other with a negative
voltage with respect to the neutral terminal (N).
The basic diagram for the Battery Box is shown here below.
BBX 1320 480V
BB NP T4 3F
BBX 1320 480V
BB NP T2 3F
BBX 1320 480V
BB NP T8 3F
BBX 1320 480V
BB NP T5 3F
Rated voltage 240 + 240 Vdc 240 + 240 Vdc 240 + 240 Vdc 240 + 240 Vdc
Weight 300 Kg 390 Kg 395 Kg 400 Kg
W x D x H 400 x 815 x 1320 mm

S EPARATE B YPASS I NPUT ( OPTIONAL )
THE DI (OPTIONAL) VERSION OF THE UPS SERIES HAS SEPARATE BYPASS AND INPUT LINES.
The UPS series with separate Bypass ensures a separate connection between the input and bypass lines.
The UPS output is synchronised with the bypass line so as to safeguard against incorrect voltage changeovers in the alternate
phases, in the event of automatic bypass or closing of the maintenance switch (SWMB).
I NTERNAL T RANSFORMER
THE OT (OPTIONAL) VERSION OF THE UPS SERIES DIFFERS FROM THE STANDARD VERSION IN THAT IT USES AN
ISOLATION TRANSFORMER INSTEAD OF THE BATTERIES.
This series of UPS uses an isolation transformer connected to the UPS output terminals.
NOTE: A separate bypass line is supplied on this UPS version.
The transformer is connected to the UPS output terminals, so the values displayed are those of the quantities
measured upstream of the transformer.
The presence of the transformer inside the UPS modifies the system neutral arrangements.
The installation of a remote maintenance bypass parallel to the UPS is incompatible with inclusion of the transformer.
In any event, if the remote maintenance bypass is inserted, make sure, at the time the remote bypass switch is
closed, that the UPS is isolated from the system by opening the input and/or output switches.
A DDITIONAL I NTERNAL B ATTERY C HARGERS
THE AC (OPTIONAL) VERSION OF THE UPS SERIES DIFFERS FROM THE STANDARD VERSION IN THAT SOME
ADDITIONAL BATTERY CHARGERS ARE USED INSTEAD OF THE BATTERIES.
This series of UPS must be used together with an external Battery Box and is suitable for applications requiring long back-up
times.
NOTE: A separate bypass line is supplied on this UPS version.
The additional internal battery charger cards are powered directly on mains power and have pseudo-sinusoidal wave form
absorption.
If the input switch is closed but the I/O switch is open (UPS switched off) the battery chargers operate independently.
Open the input switch (SWIN) to totally shutdown the UPS and the additional battery chargers.
AC Version 10 kVA 12 kVA 15 kVA 20 kVA
Nominal voltage 240 + 240 Vdc
Current in addition to that supplied
by the internal battery charger 6A@240Vdc

INSTALLATION
ALL THE OPERATIONS DESCRIBED IN THIS SECTION ARE TO BE PERFORMED EXCLUSIVELY BY
QUALIFIED STAFF.
The company declines all liability for damage caused by incorrect connections or operations not described
in this manual.
S TORING THE UPS AND THE B ATTERY B OX
The storage room must respect the following conditions:
Temperature: 0°÷40°C (32°÷104°F)
Relative humidity: max. 95%
P REPARING FOR INSTALLATION
P RELIMINARY I NFORMATION
UPS models 10 kVA 12 kVA 15 kVA 20 kVA
Rated power 10000 VA 12000 VA 15000 VA 20000 VA
Working temperature 0 ÷ 40 °C
Max. relative humidity during operation 90 % (non-condensing)
Max. height of installation
1000 m at rated power
(-1% Power for every 100 m above 1000 m)
max 4000 m
W x D x H MCT 320 x 840 x 930 mm
MST 440 x 850 x 1320 mm
Weight (w/ batteries) MCT 180 Kg 182 Kg 190 Kg 195 Kg
MST 305 Kg 310 Kg 315 Kg 320 Kg
Power dissipated at rated resistive load
(pf=0.9) and with battery as buffer *
0.63 kW
540 kcal/h
2150 B.T.U./h
0.75 kW
645 kcal/h
2560 B.T.U./h
0.86 kW
740 kcal/h
2940 B.T.U./h
1.15 kW
990 kcal/h
3930 B.T.U./h
Power dissipated at rated distortion load
(pf=0.7) and with battery charged *
0.49 kW
420 kcal/h
1670 B.T.U./h
0.58 kW
500 kcal/h
1980 B.T.U./h
0.67 kW
580 kcal/h
2290 B.T.U./h
0.90 kW
775 kcal/h
3070 B.T.U./h
Flow rate of fans for removing heat from
installation room ** 340 mc/h 400 mc/h 460 mc/h 615 mc/h
Current leak to earth *** < 5 mA
Isolation protection IP20
Cable input From bottom / on rear
*3.97 B.T.U./h = 1 kcal/h
** To calculate the air flow rate, the following formula may be used: Q [m3/h] = 3.1 x Pdiss [Kcal/h] / (ta - te) [°C]
Pdiss is the power expressed in Kcal/h dissipated by all the devices installed in the installation environment.
ta= ambient temperature, te=outside temperature. To take leaks into account, the value obtained should be increased by
10%.
The table shows an example of a flow rate with (ta - te)=5°C and a rated resistive load (pf=0.9).
(Note: This formula is applicable if ta>te, only; if not the UPS installation requires an air-conditioning system).
*** The leakage current of the load is to be added to that of the UPS on the earth wire.

E LECTROMAGNETIC C OMPATIBILITY
This UPS product conforms to the current electromagnetic compatibility (EMC) regulations (C2 class). It may cause radio
interference in the home environment. The user may have to adopt supplementary measures.
This product is for professional use in industrial and commercial environments. Connections to USB and RS232 connectors
must be made with the cables provided, or at least with shielded cables less than 3 metres long.
I NSTALLATION E NVIRONMENT
When choosing the site in which to install the UPS and the Battery Box, the following points should be taken into consideration:
Avoid dusty environments
Check that the floor is level and capable of withstanding the weight of the UPS and the Battery Box
Avoid cramped environments that could impede the normal maintenance activities
The relative humidity should not exceed 90%, non-condensing
Check that the ambient temperature, with the UPS running, remains between 0 and 40°C
The UPS may be operated with an ambient temperature of between 0 and 40°C. The recommended
working temperature for the UPS and the batteries is between 20 and 25°C. In fact, if the battery has an
average life of 5 years with a working temperature of 20°C, the life is halved if the working temperature is
increased to 30°C.
Avoid installing the equipment in places exposed to the direct sunlight or hot air
To keep the temperature of the installation room within the range indicated above, there must be a system for eliminating the
dissipated heat (the UPS kW / kcal/h / B.T.U./h dissipation values are shown in the table on the previous page). The methods
that may be used are:
Natural ventilation
Forced ventilation, recommended if the outside temperature is less (e.g. 20°C) than the temperature at which the UPS
or Battery Box is to be operated (e.g. 25°C)
Air-conditioning system, recommended if the outside temperature is higher (e.g. 30°C) than the temperature at which
the UPS or Battery Box is to be operated (e.g. 25°C)

R EMOVING THE UPS AND THE B ATTERY B OX FROM THE P ALLET
MCT VERSION
Cut the straps and remove the
cardboard box by sliding it
upwards
Remove the accessory box and
side blocks.
NOTE 1: You will find the
accessory box either inside the
door of the UPS or on top of the
UPS.
FRONT VIEW REAR VIEW
Open the door and remove the
slides.
NOTE 2: The slides are fixed to
the pallet by a screw (marked C
in the figure).
Remove the 4 brackets securing
the UPS to the pallet (the
screws are marked A and B in
the figures).
Using 4 of the previously
removed screws (type A) secure
the slides to the pallet (as
shown). Push the UPS from the
rear off the pallet with great
care. Make sure that the door
is closed before doing this
NOTE: All parts of the packaging should be kept for future use.
A
AA
A
B
B
C
B
B
AA
A
A

MST V ERSION
WARNING: IN ORDER TO AVOID DAMAGE TO PERSONS AND/OR TO THE MACHINES, PLEASE
FOLLOW SCRUPULOUSLY THE INDICATIONS GIVEN BELOW.
SOME OF THE FOLLOWING OPERATIONS REQUIRE TWO PEOPLE.
Cut the straps and slide the cardboard box off
the unit pulling upwards. Remove the packaging.
Remove the box containing the accessories.
NOTE: The box of accessories may be inside the
packaging or behind the UPS door.
Remove the two brackets securing the UPS to the pallet by
loosening screws A and B.
Once removed, the two brackets can be used as ramps. Fasten the ramps to the pallet using the screws A and making sure
to align them with the wheels of the unit.
Turn the feet as far as they will go in order to increase the distance between the unit and the pallet.
Make sure that the door is properly closed.
WARNING: to unload the UPS from the pallet, we recommend that you push it down the ramps from behind, taking
every precaution and accompanying the unit along the ramps to the floor. In view of the weight of the machine, this
operation should be carried out by two people.
NOTE: We advise you to keep all the parts of the packaging for future use.

P RELIMINARY C HECK OF C ONTENTS
Having opened the package, start by checking the contents.
UPS BATTERY BOX (optional)
Metal slides, Guarantee document, User manual,
Serial connecting cable, 4 battery fuses (to be
inserted in the "SWBATT" fuse holders), Front door
key (MST version only)
Metal slides, Guarantee document, 4 battery fuses (to be
inserted in the "SWBATT" fuse holders), Front door key
(MST version only)
I NSTALLING THE UPS AND THE B ATTERY B OX
When installing the equipment, the following points should be considered:
The wheels are to be used exclusively for fine positioning, and thus for small distances only.
The plastic parts and the door are not to be used for gripping or pushing the UPS.
Sufficient space should be left in front of the equipment for it to be turned on/off and maintenance operations to be
performed on it ( ≥1.5 mt )
The rear part of the UPS should be set at least 30 cm from the wall, to enable the air blown by the ventilation fans to
flow away correctly
No objects should be left on its top surface
Having set the equipment in position, secure it by engaging the brake rod (see "Front Views of the UPS" point 8) situated below
the connecting terminals.
(MST version only): In seismic areas or for mobile systems, the brackets used to fasten the unit to the pallet (ramps) can be
reused to anchor the UPS to the floor (see the figure below). In normal conditions, the brackets are not necessary.
S TEPS TO BE T AKEN TO G AIN A CCESS TO THE T ERMINALS OF THE UPS / B ATTERY B OX
The operations indicated below are to be performed with the UPS disconnected from the mains powers,
turned off and with all the switches and fuse holders of the equipment open.
Follow the instructions provided below to open the UPS:
Open the door
Remove the terminal and switches cover (see "Views of the UPS" ref. 7)
Having completed the installation operations inside the equipment, replace the terminal cover and close the door.

E LECTRICAL C ONNECTIONS
WARNING: a 4-wire three-phase distribution system is required.
The UPS must be connected to a power supply line made up of 3 phases + neutral + PE (protective earth) of TT, TN
or IT type. Therefore, the phase rotation must be respected.
Optional TRANSFORMER BOXES to convert the distribution systems from 3 wires to 4 wires are available.
W IRING DIAGRAMS FOR C ONNECTING TO THE E LECTRICAL S YSTEM
UPS without any variation in neutral condition
UPS with galvanic isolation at input
UPS with galvanic isolation at output

UPS without any variation in neutral condition and with separate bypass input
UPS with galvanic isolation and with separate bypass input
UPS with galvanic isolation at output and separate bypass input

Separate bypass:
if the separate bypass option is present, protective devices must be present on both the main power supply line and the bypass
line.
Note: the neutral of the input line and that of the bypass are commoned inside the equipment, so they must refer to the same
potential. If the two power supplies were different, an isolation transformer would have to be used on one of the inputs.
UPS without any variation in neutral condition and with separate bypass input
connected to independent power supply line
UPS with separate bypass input on independent power supply line
and with galvanic isolation at input
UPS with separate bypass input connected to independent power supply line
and with galvanic isolation at output

I NTERNAL P ROTECTIVE D EVICES OF THE UPS
The table below shows the sizes of the isolators of the UPS and the sizes of the battery fuses (SWBATT): these devices are
accessible from the front of the UPS.
There are also indications about the internal fuses (not accessible) protecting the input and output lines and the maximum input
and rated output currents. To install the UPS, see the block diagram in the “USE” section of the “Description” paragraph.
Fuses are to be replaced with ones of the same size and the characteristics indicated in the table below.
Isolators and internal protective devices
UPS
mod. Non-automatic switches Fuses
[kVA] UPS input /
Separate bypass
UPS output /
Maintenance
Rectifier input
fuse Battery fuse Output fuse
Input
current
[A] **
Output
current
[A]
SWIN / SWBYP
(optional) SWOUT / SWMB SWBATT Max
* Rated
10 40A(4P) 40A(4P) 25A FF 500V
(6.3x32)
32A gG 400V
(10x38)
25A FF 500V
(6.3x32) 20A 15A
12 40A(4P) 40A(4P) 25A FF 500V
(6.3x32)
32A gG 400V
(10x38)
25A FF 500V
(6.3x32) 24A 17A
15 63A(4P) 63A(4P) 2 x 20A FF
500V (6.3x32)
50A gG 400V
(14x51)
2 x 20A FF
500V (6.3x32) 29A 22A
20 63A(4P) 63A(4P) 2 x 20A FF
500V (6.3x32)
50A gG 400V
(14x51)
2 x 20A FF
500V (6.3x32) 38A 29A
*The max. input current refers to a rated load (PF = 0.9) and an input voltage of 346V,
and a battery charger charged with 4A.
** In versions with additional internal battery chargers (optional), the maximum input current on lines L2 and L3 must be
increased by 7A.
SHORT CIRCUIT
If a failure occurs on the load, the UPS protects itself by limiting the value and duration of the current output (short-circuit
current). These values also depend on the operating status of the UPS at the time of the failure; there are two different cases:
UPS in NORMAL OPERATION: the load is switched instantaneously to the bypass line (I
2
t=11250A
2
s): the input line is
connected to the output without any internal protection (blocked after t>0.5s)
UPS in BATTERY OPERATION: the UPS protects itself by providing a current equivalent to about 1.5 times the rated
current for 0.5s and turns itself off after this time has elapsed
BACKFEED
The UPS has internal protection against backfeed through metal separating devices.
There is an output on the relay board (optional) for activating a releasing device to be installed upstream from the UPS.
The UPS has an internal device (redundant bypass power supply) which, when a failure occurs on the machine,
activates the bypass automatically, thus keeping the load powered without any internal protection and without any
limitation to the power supplied to the load.
Under these emergency conditions, any disturbance present on the input line will affect the load.
See also the “USE” section of the “Redundant Auxiliary Power Supply for Automatic Bypass” paragraph.