Gtec LibraPro User manual

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User Manual
LibraPro
from 10 to 100kVA single phase output

Pag. 2 / 57 0MNMPMK10NPENUB 00

0MNMPMK10NPENUB 00 Pag. 3 / 57
Thank you for choosing our product.
The factory is highly specialized in the development and production of uninterruptible power
supplies (UPS). The UPSs of this series are high quality products, carefully designed and
manufactured to ensure optimum performance.
Symbols used in the manual
In this manual, some operations are shown by graphic symbols to alert the reader to the dangerous nature of the
operations:
Possibility of serious injury or substantial damage to the device, unless adequate
precautionary countermeasures are taken.
This symbol indicates some important information which must be read with care.
It is recommended to read this part of the manual.
Protective equipment to be worn
No maintenance operations must be carried out on the device without wearing the Personal Protective Equipment
(PPE) described below.
Personnel involved in the installation or maintenance of the equipment must not wear clothes with wide sleeves or
laces, belts, bracelets or other items that may be dangerous, especially if they are metallic. Long hair must be tied in
such a way as to ensure that it is not a hazard.
The following signs show the protective equipment that should be worn. The various items of PPE must be selected
and sized according to the nature of the hazard (particularly electrical) posed by the equipment.
Accident prevention footwear
Use: always
Protective eyewear
Use: always
Protective clothing
Use: always
Helmet
Use: When there are suspended loads
Work gloves
Use: always

Pag. 4 / 57 0MNMPMK10NPENUB 00
Definition of “operator” and “specialized technician”
The professional figure responsible for accessing the equipment for ordinary maintenance purposes is defined with
the term operator.
This definition covers personnel that know the operating and maintenance procedures for the equipment, and that
have been:
1. trained to operate in accordance with the safety standards relating to the dangers that may arise where
electrical voltage is present;
2. trained to use Personal Protective Equipment and to carry out basic first aid.
The professional figure responsible for the installation and start-up of the equipment, and for any extraordinary
maintenance, is defined with the term specialized technician.
This definition covers personnel that, in addition to the requirements listed above for a general operator, must also:
1. have been suitably trained by the manufacturers or their representative.
2. be aware of installation, assembly, repair and service procedures, and have a specific technical
qualification.
3. must have a background of technical training, or specific training relating to the procedures for the safe use
and maintenance of the equipment.
Emergency interventions
The following information is of a general nature.
First aid interventions
Company regulations and traditional procedures should be followed for any first aid intervention that may be
required.
Firefighting measures
1. Do not use water to put out a fire, but only fire extinguishers that are suitable for use
with electrical and electronic equipment.
2. If exposed to heat or fire, some products may release toxic fumes into the atmosphere.
Always use a respirator when extinguishing a fire.

0MNMPMK10NPENUB 00 Pag. 5 / 57
GENERAL PRECAUTIONS
This manual contains detailed instructions for the use, installation and start-up of the UPS. Read the manual
carefully before installation. For information on using the UPS, the manual should be kept close at hand
and consulted before carrying out any operation on the device.
This device has been designed and manufactured in accordance with the standards for the product, for normal
use and for all uses that may reasonably be expected. It may under no circumstances be used for any purposes
other than those envisaged, or in any other ways than those described in this manual. Any interventions should
be carried out in accordance with the criteria and the time-frames described in this manual.
PRECAUTIONS AND SAFETY REGULATIONS
Refer to the “Safety and Compliance Manual” supplied with the UPS (0MNA141_NE).
ENVIRONMENTAL PROTECTION
In the development of its products, the company devotes abundant resources to analysing the
environmental aspects.
All our products pursue the objectives defined in the environmental management system developed by
the company in compliance with applicable standards.
No hazardous materials such as CFCs, HCFCs 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 applicable standards in the country in which the product is used.
DESCRIPTION MATERIAL
Box Cardboard
Protective bag Polythene
Accessories bag Polythene
DISPOSING OF THE PRODUCT
The UPS contain electronic cards and batteries which are considered TOXIC and HAZARDOUS waste. When the product
reaches the end of its operating life, dispose of it in accordance with applicable local legislation.
Disposing of the product correctly contributes to respecting the environment and personal health.

Pag. 6 / 57 0MNMPMK10NPENUB 00
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0MNMPMK10NPENUB 00 Pag. 7 / 57
CONTENTS
1. PRELIMINARY OPERATIONS ............................................................................... 9
1.1 Removing the packaging and positioning the device ...................................................... 9
1.2 Storage ............................................................................................................................ 9
1.3 Handling ......................................................................................................................... 9
2. INSTALLATION ENVIRONMENT ......................................................................... 10
2.1 Ambient conditions: ...................................................................................................... 10
2.2 Dimensions of the premises .......................................................................................... 10
2.3 Cooling of the premises ................................................................................................ 11
2.4 Air change for battery premises ................................................................................... 12
3. LIBRAPRO IN SINGLE CONFIGURATION ...................................................... 13
3.1 Set-up of the electrical system ...................................................................................... 13
3.1.1 ac Input ............................................................................................................................................ 13
3.1.2 Selectivity ......................................................................................................................................... 14
3.1.3 Battery .............................................................................................................................................. 15
3.1.4 Differential (RCD) ........................................................................................................................... 15
3.1.5 Backfeed protection ......................................................................................................................... 16
3.1.6 Emergency power off device (EPO) ................................................................................................. 16
3.2 Mains, load and battery connections ............................................................................ 17
3.3 Battery connections ...................................................................................................... 18
3.4 Connection of signals and remote commands .............................................................. 19
3.4.1 EPO connector (emergency power off control) ............................................................................... 19
3.4.2 REMOTE COMMANDS AND ALARMS .......................................................................................... 19
3.4.3 RS232 ............................................................................................................................................... 20
3.4.4 Parallel (optional)............................................................................................................................ 21
3.4.5 SLOTS 1-2 , the following cards may be inserted (optional): .......................................................... 21
3.4.6 REMOTE ALARMS (optional card) ................................................................................................. 22
3.4.7 MULTI I / O (optional) ................................................................................................................ 22
3.4.8 REMOTE PANEL (OPTIONAL) ...................................................................................................... 22
3.4.9 Dual Bus System – UGS (optional) .................................................................................................. 22
3.4.10 SWOUT and SWMB aux – Battery temperature sensor. .................................................................. 23
3.5 Start-up procedure ........................................................................................................ 26
3.5.1 Battery operation check ................................................................................................................... 27
3.6 Operating modes ........................................................................................................... 28
3.6.1 On - line - factory setting - .............................................................................................................. 28
3.6.2 Standby-on / Smart active ................................................................................................................ 28
3.6.3 Standby-off (with mains present the load is not powered) .............................................................. 29
3.6.4 Stabilizer (operation in on-line mode without battery) ................................................................... 29
3.6.5 Frequency converter (from 50 to 60Hz or vice versa) ..................................................................... 29
3.7 Personalizations ........................................................................................................... 30
3.8 Procedure to transfer the load from LIBRAPRO onto maintenance by-pass. ............ 30
3.9 UPS and load shutdown ............................................................................................... 31
3.10 Block diagram ............................................................................................................... 32
3.11 Components of the block diagrams .............................................................................. 33

Pag. 8 / 57 0MNMPMK10NPENUB 00
4. UPS IN PARALLEL CONFIGURATION ................................................................ 36
4.1 Introduction .................................................................................................................. 36
4.2 Electrical system set-up ................................................................................................ 37
4.2.1 Input ................................................................................................................................................. 37
4.2.2 Differential....................................................................................................................................... 37
4.2.3 Emergency power off device (EPO) ................................................................................................. 37
4.2.4 External maintenance by-pass. ........................................................................................................ 38
4.3 Mains, load and battery connections ........................................................................... 39
4.3.1 UPS AC input / output power connection ........................................................................................ 39
4.3.2 Power connections battery side. ...................................................................................................... 40
4.4 Connection of signals ................................................................................................... 42
4.5 Start-up procedure ....................................................................................................... 45
4.6 Operating modes .......................................................................................................... 46
4.7 By-pass for maintenance .............................................................................................. 48
5. MAINTENANCE ................................................................................................ 52
6. GENERAL CHARACTERISTICS ........................................................................... 54
7. APPENDIX A - REMOTE COMMANDS AND ALARMS CARD - ................................ 56

0MNMPMK10NPENUB 00 Pag. 9 / 57
1. Preliminary operations
1.1 Removing the packaging and positioning the device
On delivery, the packaging must be inspected to ensure that it is whole and that it has not been crushed or dented.
Check in particular that neither of the two impact resistant devices on the packaging is red; if one of them is red,
follow the instructions on the packaging.
The essential details of the device are provided on the shipping document. The marking, weight and dimensions of
the various items making up the packing list are shown.
Check the state of the device by means of a visual inspection of both the inside and the outside. Any dents seen
mean that it has suffered knocks during shipping, which could compromise the normal operation of the device.
1.2 Storage
In the following situations:
- installation not immediately after delivery;
- de-installation and storage while awaiting relocation,
place the device in covered premises that are protected from direct contact with atmospheric agents and dust. The
following environmental values are those allowed in the storage area:
Temperature: -25 ÷ + 75 °C
Relative humidity: 30÷90 % max.
For the installation of a battery cabinet, if provided with the uninterruptible power supply, follow the
instructions given in the specific manual.
The list of material provided may vary depending on the order specifications. As a general rule, the packaging
should include the following: this manual, the installation drawing, the warranty and eventual accessories.
1.3 Handling
The equipment must only be handled by adequately trained personnel. It can be unloaded from the vehicle and put
into place by lifting the box or the wooden deck to which the equipment is secured with a fork-lift truck. A
transpallet or fork-lift truck should be used for the permanent positioning of the equipment, in accordance with the
instructions provided below.

Pag. 10 / 57 0MNMPMK10NPENUB 00
1 Insert the forks of the fork-lift truck in the lower part of the device, from the front or back, and ensure
that they stick out about 30 cm on the other side.
If a transpallet is used, raise the device only as much as is strictly necessary.
2 Secure the device to the transpallet or fork-lift before moving it.
Risk of overturning
In order to avoid the risk of the device overturning, ensure that it is firmly secured to the transpallet or fork-
lift truck by means of appropriate ropes before moving it.
When being moved the cabinet should be handled with care; knocks or drops can damage it. Once in position,
remove the packaging carefully in order not to scratch the device.
The packaging should be removed as follows:
1. Cut the bands
2. Slide away the carton from above.
3. Remove the screws securing the cabinet to the wooden base.
4. If using a transpallet, remove the device from the pallet and set it on the floor, using the same
precautions as set out in the section on Handling.
2. Installation environment
The UPS and the battery cabinet have been designed for indoor installation. The choice of premises for installation
should comply with the points set out below.
2.1 Ambient conditions:
 ensure that the floor can support the weight of the UPS and of any battery cabinet that may be used;
 avoid dusty environments;
 avoid narrow environments that could hinder normal maintenance operations;
 avoid placing the device in areas exposed to direct sunlight or heat;
 ensure that the ambient temperature conforms to the following:
minimum operating temperature: 0 °C
maximum temperature for 8 hours a day: + 40°C
average temperature for 24 hours: + 35°C
 max relative humidty: 90 % without condensation
 Max installation height: 1000 m at rated power
(-1% power for every 100 m above 1000 m) max 4000 m
2.2 Dimensions of the premises
For the mechanical dimensions of the cabinets, refer to the “INSTALLATION DRAWINGS” supplied with the UPS
and with the battery cabinet, if present. These drawings provide the following data:
 the position of the holes in the base to secure the device to the floor, if applicable;
 the view of the floor support for the sizing of a structure to raise the cabinet, if applicable;
 the position of cable entry;
 the position of the fans on the top of the UPS, for the positioning of a structure to convey the warm air
discharged by the equipment outside the premises, if applicable;
 the input, output and battery cables section;
 the power dissipated by the equipment (kW).

0MNMPMK10NPENUB 00 Pag. 11 / 57
2.3 Cooling of the premises
The recommended operating temperature for the lifetime of the UPS and of the batteries is between 20 and 25°C.
The lifespan of the battery depends on the operating temperature; with an operating temperature of between 20°C
and 30°C, the lifespan of the batteries is halved.
A heat dissipation system is required to keep the temperature of the premises housing the equipment within the field
20÷25°C.
The heat dissipation needed for the correct operation of the UPS is brought about by the air current made by the fans
located inside the UPS (forced convection) and by the air around the side panels (natural convection).
In order to ensure proper air circulation, and therefore the correct operation of the UPS, measures must be taken
during installation to avoid any obstructions to the free circulation of air. These include the following:
 leave a free space of at least one metre at the front of the equipment to ensure both the circulation of the air and
installation and maintenance operations;
 With natural convection the thermal load is dissipated to the outside through the walls; thus a cabinet placed
against a wall or in a hollow dissipates less heat than one located in a free environment.
The following rule must be observed:
leave at least one of the three side walls free: right, left or back.
 the side strips must not be mounted for installations where cabinets are placed side by side.
10÷80kVA
 Leave a free space of at least 20 cm. must be left between the
back of the UPS and the wall so as not to block the flow of air
from the fans, and at least 40 cm. for maintenance operations on
the fans.
100kVA
 ensure a distance of at least 60 centimetres from the ceiling, so as
not to hinder air extraction,

Pag. 12 / 57 0MNMPMK10NPENUB 00
2.4 Air change for battery premises
The premises housing the battery cabinet must have sufficient air circulation to ensure that the concentration of
hydrogen issued during battery charging is kept below the danger limit.
The air change in the premises should preferably be provided by natural ventilation, otherwise by forced ventilation.
The standard EN 50272-2 for air change envisages that the minimum opening must satisfy the following equation:
A = 28 x Q = 28 x 0.05 x n x Igas x C10 (1/10³) [cm²]
where: A = free opening for air intake and outlet
Q = flow of air to be removed [m³/h]
n = number of battery elements;
C10 = battery capacity over 10 hours [Ah]
Igas = current that produces gas [mA//Ah]
in accordance with the standard: Igas = 1 VRLA type battery (*)
(*) for open vase or nickel batteries, contact the battery manufacturer.
When the equation is applied for 240 element (40 battery) hermetically-sealed lead batteries:
A = 336 x C10 / 10³ [cm²]
When using 120Ah batteries, the minimum aperture should be approximately:
A = 41 [cm²]
The air intake and outlet must be positioned to ensure the best possible circulation; for example:
- apertures on opposite walls,
- a minimum distance of 2 m when they are on the same wall.

0MNMPMK10NPENUB 00 Pag. 13 / 57
3. LIBRAPRO in single configuration
The operations described in this chapter must be carried out exclusively by a specialized technician.
3.1 Set-up of the electrical system
3.1.1 ac Input
The LIBRAPRO input must have a max. current protection device. The protection device should be sized according
to the situation, as follows:
a) single power line
b) main power supply and separate by-pass
a) Single power line (F input line protection)
The UPS input must have a max. current
protection device for the section of line coming
from the distribution panel. The fuse
represented with the letter F.
b) main power supply and by-pass separate
(Fmains and G by-pass input line protection)
When there are two separate power lines, the
main power line and the by-pass line, two
protection devices must be provided (indicated
with the letters F and G in the drawing), one for
each line.
MAINS LINE
+/-
LOAD
UPS
BATTERY CABINET
F
SWBY
SWIN
SWOUT
BY-PASS LINE
G
MAINS LINE
+/-
LOAD
UPS
BATTERY CABINET
F
SWBY
SWIN
SWOUT
[KVA] 10 15 20 30 40 60 80 100
Input line L1/L2/L3/N
Imax (100% load, and battery recharging) L1
L2
L3
N
43
22
22
43
65
33
33
65
87
44
44
87
130
66
66
130
174
87
87
174
260
131
131
260
348
175
175
348
435
218
218
435
External [F] fuse type gG (*) [A] 50 80 100 160 200 315 400 500
(*) or equivalent circuit breakers
[KVA] 10 15 20 30 40 60 80 100
mains line L1 / L2 / L3
Imax (100% load, and battery
recharging)
L1
L2
L3
22
22
22
33
33
33
44
44
44
66
66
66
87
87
87
131
131
131
175
175
175
218
218
218
External [F] fuse type gG (*) [A] 25 40 50 80 100 160 200 250
By-pass line L1/N
corrente 43 65 100 130 174 260 348 435
External [G] fuse type gG (*) [A] 50 80 100 160 200 315 400 500
(*) or equivalent circuit breakers

Pag. 14 / 57 0MNMPMK10NPENUB 00
3.1.2 Selectivity
The system where the UPS is inserted must be set up in such a way that in the event of a shortcircuit on one of the
lines downstream of the UPS, the fuse on the output opens while the upstream fuse normally works. This is known
as selectivity, and ensures that the
remaining feeders maintain the
power supply.
In order to select the correct
protection devices to be inserted
downstream of the UPS, the
following two operating modes have
to be taken into consideration:
mains power supply and battery
power supply.
With mains power supply the output fuse must be selective with the input fuse; the condition is verified for the
following values:
At least two feeders are necessary in order to use the UPS at rated load with fuses of type gG.
With battery power supply ( first fault) in the event of a shortcircuit on one of the outputs (second fault) it must be
possible for the fuse to be open before the inverter shuts down.
At least 2÷3 feeders are necessary in order to use the UPS at rated load with fuses of type gG.
To sum up, when there is a shortcircuit on the output, there are two alternatives if only the line affected by the
shortcircuit is to be isolated; let us consider the example of the 40kVA:
selectivity with both mains power supply and battery power supply;
the load has to be shared between at least three feeders, each sized at 33% of the rated power.
selectivity, with mains power supply only:
since it is considered unlikely that after a first fault a second fault will occur in the limited time of
operation from the battery, it is sufficient to share the output between two lines, each sized for 50% of the
rated power.
H
+/-
LOAD
UPS
SWBY
SWIN
SWOUT
+/-
BATTERY CABINET
kVA 10 15 20 30 40 60 80 100
rated output current: [A] 43 65 87 130 174 260 348 435
type gG fuse used at the bypass input
(as shown in the table of connections) [A] 50 80 100 160 200 315 400 500
maximum fuse at the UPS output for selectivity:
fuse size for type gG fuse [A] 32 50 63 100 125 200 250 315
fuse size for type aM fuse [A] 16 25 36 63 80 125 160 200
kVA 10 15 20 30 40 60 80
rated output current: [A] 43 65 87 130 174 260 348 435
shortcircuit current 3 times the rated output current for 1 second
maximum fuse at the UPS output for selectivity:
fuse size for type gG fuse [A] 25 32 40 63 80 100 160 160
fuse size for type aM fuse [A] 12 20 20 40 50 63 125 125

0MNMPMK10NPENUB 00 Pag. 15 / 57
3.1.3 Battery
Battery cabinet
For connection to the UPS, the battery cabinet must have an overcurrent protection device and a
disconnecting device.
The function of the fuses is to protect the batteries and the cables from a shortcircuit between the battery cabinet and
the UPS . The following rules should be observed for their sizing:
 if rapid fuses of the type gl / gG are installed: the maximum size of fuse to be used is 2 times the
battery capacity in Ah.
 If ultra rapid fuses of the type aR are installed: the maximum size of fuse to be used is 2.5 times
the battery capacity in Ah.
For example: the following fuses may be used for batteries of the type 65Ah: 120A type gl/gG or 150A type aR.
For the section of the cable for the UPS to battery connection refer to the following current value:
3.1.4 Differential (RCD)
If the UPS protection against electric shock uses differential current devices (RCD), these have to have the
following characteristics:
- Sensitivity 300mA
- sensitive direct current and unidirectional components (class A or class B)
- insensitive to transient current pulses
- delay greater than or equal to 0.1 s.
In the standard version (SWBY close), without an input separation transformer, the neutral originating from the
mains is connected to the UPS output neutral. The system neutral point treatment is not modified:
neutral
THE INPUT NEUTRAL IS CONNECTED TO THE OUTPUT NEUTRAL
THE DISTRIBUTION SYSTEM WHICH POWERS THE UPS IS NOT MODIFIED BY THE UPS
The neutral point treatment is only modified if a barrier is present or when the UPS operates with the
neutral isolated upstream (SWBY open)
When operating in the presence of mains supply, a differential breaker (RCD) installed on the input will intervene as
the output circuit is not isolated (with SWBY close)from the input circuit.
When operating without mains supply (from battery with SWBY) the input differential breaker will intervene only if
it is able to switch as a result of leakage current without any voltage at its poles (for example a differential breaker
with an auxiliary relay is not suitable). However it is possible to install additional differential breakers on the output
of the UPS , possibly coordinated with those on the input.
[kVA] 10 15 20 30 40 60 80 100
battery
Permanent battery eq. Current [A] 28 39 52 84 112 168 225 270

Pag. 16 / 57 0MNMPMK10NPENUB 00
3.1.5 Backfeed protection
The UPS is provided with a device to prevent voltage backfeed on the input line due to an internal fault. This
protection device works by switching off the inverter if the current flow is faulty, thereby causing voltage backfeed
on the by-pass line during operation from the inverter. If the fault occurs when the UPS is operating from the battery,
the load will not be powered.
Should it be required to avoid the shutting down of the inverter in order to keep the load powered by the inverter
even in the event of a double fault, the system can be customized to control the opening coil of a switch located
upstream by reprogramming one of the relays on the “REMOTE COMMANDS AND ALARMS” card.
The control logic allows the function of the relay to be reconfigured, for example for the backfeed alarm, and then
the free voltage contact can be used to control the triggering of a switch located on the UPS input.
3.1.6 Emergency power off device (EPO)
The UPS is pre-set to be connected to a remote emergency power off device as laid down in standard EN 62040. If
the remote device (not supplied with the equipment) is activated, the inverter output voltage is cut.
The connection procedure is shown below.
a - EPO terminal board located on the UPS
b - EPO switch (not provided).
On the UPS , the jumper on the EPO terminals (page 19) must be removed, and the wires from the auxiliary
contact of the button must be connected in place of the jumper.
The contact must be closed with the button in the rest position and must open when the button is pressed.
UPS
a
b

0MNMPMK10NPENUB 00 Pag. 17 / 57
3.2 Mains, load and battery connections
The operations described in this chapter must be carried out exclusively by a specialized technician.
The first connection to be made is the earth conductor.
THE UPS MUST NOT OPERATE WITHOUT AN EARTH CONNECTION
Before making the connection, open all the switches on the device and ensure that the UPS is completely isolated
from the power sources: battery and AC power line. More specifically, check that:
- the UPS input line or lines are completely isolated;
- the battery cabinet disconnector / fuse (if present) is open;
- all the UPS disconnectors - SWIN, SWBY, SWOUT and SWMB - are in the open position;
- check with a multimeter that there are no dangerous voltages on the terminal board.
For connection of the power cables to the terminal boards, refer to the “INSTALLATION DRAWINGS”
provided with the UPS and with the battery cabinet, if present.

Pag. 18 / 57 0MNMPMK10NPENUB 00
3.3 Battery connections
BATTERY CABINET if present:
The battery cabinet must be provided with a fuses to be connected to the UPS .
Up to 3 battery cabinets can be connected in parallel,
in accordance with the diagram below.
CABINET DISCONNECTOR
For systems with 4 or more battery cabinets, use a Battery switch cabinet where the cables can be
parallel-connected (refer to the marketing department). For the sizing of the cables and connection
procedures, refer to the “INSTALLATION DRAWING” attached to the battery cabinet.
For back-up times requiring a greater number of Battery cabinets, contact the marketing department.
UPS
-
Battery cabinet
+
Battery cabinet
SWBAT2
-
max 3 battery cabinet
+
SWBAT3
-+
Battery switch cabinet
+
+
-
-
SW
Battery cabinet
UPS
-
+
Battery cabinet
SWBAT1
+
-
SWBAT4
-
+

0MNMPMK10NPENUB 00 Pag. 19 / 57
3.4 Connection of signals and remote commands
To the position of the signal and remote connection, refer to the “INSTALLATION DRAWINGS” supplied
with the LIBRAPRO UPS.
3.4.1 EPO connector (emergency power off control)
If the jumper on the connector is opened, the voltage on the UPS output
will be cut.
The LIBRAPRO UPS is factory-fitted with the EPO terminals
shortcircuited. If this input is used, the UPS can be shut down in a
hazardous situation from a remote position simply by pressing a button.
If only the power supply is removed, for example by opening the switch
of the power supply panel, the UPS will keep the load powered using the
energy in the batteries.
3.4.2 REMOTE COMMANDS AND ALARMS
The card is equipped with a terminal board with 12 positions which has the following:
POWER SUPPLY 1 power supply 12Vdc 80mA(max.) [pins 10 and 11];
ALARMS 3 potential-free change-over contacts for alarms;
COMMAND 1 command programmable from the panel [pins 11 and 12];
The functions of the three contacts and the command may be reprogrammed via the display panel. The ALARMS
and the COMMAND are factory-set in the following way:
- ALARMS
- RL1 Bypass / fault, the contact changes position when the UPS switches the load onto
the by-pass line either during normal operation (e.g. due to overload) or as a
result of a fault in the inverter stage;
- RL2 Battery discharging, the contact changes position when the load is powered from
the battery due to a mains power failure;
- RL3 End of battery discharge, the contact changes position when, during a mains
outage, the remaining time for battery discharge has reached the minimum value
defined. Once this time has passed, the load will remain unpowered (the factory-
set end of discharge pre-alarm value is 5 minutes);
- COMMAND
IN 1 Inverter OFF. Connect pin 11 to pin 12 (for at least 2 seconds) .
- In “NORMAL OPERATION”,
if the INVERTER OFF command is received, the UPS switches the power
supply of the load onto the by-pass line (load is not protected should there be a
mains outage).
- In “EMERGENCY OPERATION”,
if the STOP INVERTER command is received, the UPS shuts down (load is not
powered).
With the jumper present, the UPS remains switched on the by-pass line when
the mains power supply is restored.
With no jumper present, the UPS will restart in NORMAL OPERATION.

Pag. 20 / 57 0MNMPMK10NPENUB 00
The position of the contacts shown is without the alarm present. The contacts can take a max. current of 1A with
42 Vac.
Please refer to APPENDIX A for the list of alarms and commands that can be programmed. The change of
function may be made by the technical support personnel.
3.4.3 RS232
Nr. 2 DB9 connectors are available for RS232 connection. The factory-set
transmission protocol is the following:
9600 baud, -no parity, -8 bits, -1 stop bit.
The transmission speed may be varied from 1200 to 9600 baud, using the
PERSONALIZATIONS menu on the CONTROL PANEL. Depending on the
distance of transmission, the recommended values for the transmission speed are:
9600 baud 50m, 4800 baud 100m, 2400 baud 200m, 1200 baud 300m.
See the diagrams below for the connection procedure.
DB9 female RS232-2
For connection with a computer use a standard RS 232
cable. See the diagram for connection with a modem.
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female
femmina
DB9
female
femmina
DB9
male
maschio
DB9
male
maschio
DB9
UPS
RS232-1
computer
Modem
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female
femmina
DB9
female
femmina
DB9
male
maschio
DB9
male
maschio
DB9
UPS
RS232-1
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12V
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+
RL 1
RL 2
RL 3
IN 1