Victron energy MultiPlus Series User manual

MultiPlus
(with firmware xxxx400 or higher)
MultiPlus (con firmware xxxx400 o superior)
12 | 3000 | 120 - 50 | 120V
24 | 3000 | 70 - 50 | 120V
Service Manual
EN
Manual de servicio
ES
Appendix

1
EN ES Appendix
1. IMPORTANT SAFETY INSTRUCTIONS - SAVE THESE INSTRUCTIONS!
In general
Please read the documentation supplied with this product first, so that you are familiar with the safety signs en directions before using
the product.
This product is designed and tested in accordance with international standards. The equipment should be used for the designated
application only.
Warning – These servicing instructions are for use by qualified personnel only. To
reduce the risk of electric shock, do not perform any servicing other than that
specified in the operating instructions unless you are qualified to do so
WARNING: DANGER OF ELECTRICAL SHOCK
The product is used in combination with a permanent energy source (battery). Even if the equipment is switched off, a dangerous
electrical voltage can occur at the input and/or output terminals. Always switch the AC power off and disconnect the battery before
performing maintenance.
The product contains no internal user-serviceable parts. Do not remove the front panel and do not put the product into operation unless
all panels are fitted. All maintenance should be performed by qualified personnel.
Never use the product at sites where gas or dust explosions could occur. Refer to the specifications provided by the manufacturer of the
battery to ensure that the battery is suitable for use with this product. The battery manufacturer's safety instructions should always be
observed.
WARNING: do not lift heavy objects unassisted.
Installation
Read the installation instructions before commencing installation activities.
This product is a safety class I device (supplied with a ground terminal for safety purposes). Its AC input and/or output terminals
must be provided with uninterruptible grounding for safety purposes. An additional grounding point is located on the outside
of the product. If it can be assumed that the grounding protection is damaged, the product should be taken out of operation and
prevented from accidentally being put into operation again; contact qualified maintenance personnel.
Ensure that the connection cables are provided with fuses and circuit breakers. Never replace a protective device by a component of a
different type. Refer to the manual for the correct part.
The installation shall be in accordance with the Canadian Electrical Code, Part 1. The wiring methods shall be in accordance with the
National Electrical Code, ANSI/NFPA 70.
Check before switching the device on whether the available voltage source conforms to the configuration settings of the product as
described in the manual.
Ensure that the equipment is used under the correct operating conditions. Never operate it in a wet or dusty environment.
Ensure that there is always sufficient free space around the product for ventilation, and that ventilation openings are not blocked.
Install the product in a heatproof environment. Ensure therefore that there are no chemicals, plastic parts, curtains or other textiles, etc.
in the immediate vicinity of the equipment.
Transport and storage
On storage or transport of the product, ensure that the mains supply and battery leads are disconnected.
No liability can be accepted for damage in transit if the equipment is not transported in its original packaging.
Store the product in a dry environment; the storage temperature should range from –20°C to 60°C.
Refer to the battery manufacturer's manual for information on transport, storage, charging, recharging and disposal of the battery.

2
2. Installation
This product may only be installed by a qualified electrical engineer.
2.1 Location
The product must be installed in a dry and well-ventilated area, as close as possible to the batteries. There should be a clear space of at
least 10cm around the appliance for cooling.
Excessively high ambient temperature will result in the following:
•Reduced service life.
•Reduced charging current.
•Reduced peak capacity, or shutdown of the inverter.
•Never position the appliance directly above the batteries.
The MultiPlus is suitable for wall mounting. For mounting purposes, a hook and two holes are provided at the back of the casing (see
appendix G). The device can be fitted either horizontally or vertically. For optimal cooling, vertical fitting is preferred.
The interior of the product must remain accessible after installation.
Try and keep the distance between the product and the battery to a minimum in order to minimize cable voltage loss.
For safety purposes, this product should be installed in a heat-resistant
environment. You should prevent the presence of e.g. chemicals, synthetic
components, curtains or other textiles, etc., in the immediate vicinity.
Each system requires a method of disconnecting the AC and DC circuits. If the
overcurrent protection device is a circuit breaker, it will also serve as the
disconnect. If fuses are used, separate disconnect switches will be needed
between the source and the fuses.
To reduce the risk of fire, do not connect to an ac load center (circuit breaker
panel) having multiwire branch circuits connected.
2.2 Connection of battery cables
In order to utilize the full capacity of the product, batteries with sufficient capacity and battery cables with sufficient cross section should
be used. The DC cables must be copper and rated 90ºC (194ºF) See table.
12/3000/120 24/3000/70
Recommended battery capacity (Ah)
400–1200
200–700
Rated Current
250A
125A
Recommended DC fuse
400A
300A
Recommended cross section (per +
and - connection terminal) 2x AWG 1/0 AWG 1/0
‘2x’ means two positive and two negative cables.
Recommended cable lugs
size
AWG 1/0
Molex part no. 19221-0240
AWG 2
Molex part no. 19221-0233
Remark: Internal resistance is the important factor when working with low capacity batteries. Please consult your supplier or the relevant
sections of our book “Energy Unlimited”, downloadable from our website.
Procedure
Proceed as follows to connect the battery cables:

3
EN ES Appendix
Use a torque wrench with insulated box spanner in order to avoid shorting the
battery.
Maximum torque: 11 Nm
Avoid shorting the battery cables.
•Undo the four screws at the front of the enclosure and remove the front panel.
•Connect the battery cables: see Appendix A.
•The connector goes on first, then the flat washer, lock washer and nut. Tighten the nuts well for minimal contact resistance.
2.3 Connection of the AC cabling
The MultiPlus is a safety class I product (supplied with a ground terminal for
safety purposes). Its AC input and/or output terminals and/or
grounding point on the outside of the product must be provided with
an uninterruptible grounding point for safety purposes.
The MultiPlus is provided with a ground relay (relay H, see appendix B) that
automatically connects the Neutral output to the chassis if no external
AC supply is available. If an external AC supply is provided, the ground
relay H will open before the input safety relay closes. This ensures the
correct operation of an earth leakage circuit breaker that is connected to
the output.
─In a fixed installation, an uninterruptable grounding can be secured by
means of the grounding wire of the AC input. Otherwise the casing
must be grounded.
─In a mobile installation (for example, with a shore current plug),
interrupting the shore connection will simultaneously disconnect the
grounding connection. In that case, the casing must be connected to
the chassis (of the vehicle) or to the hull or grounding plate (of the
boat).
In case of a boat, direct connection to the shore ground is not
recommended because of potential galvanic corrosion. The solution to this
is using an isolation transformer.
This unit or system is provided with fixed trip limits and shall not be
aggregated above 30 kw on a single point of common connection.
The terminal blocks can be found on the printed circuit board, see Appendix A. The shore or mains cable must be connected to the Multi
with the aid of a three-wire 90ºC (194ºF) copper cable. Minimum torque 5.1Nm.
AC-in
AC-Out-1
AC-OUT-2
Rated current
50A
75A
25A
Recommend fuse or circuit breaker
50A
75A
32A
Minimum wire gauge
AWG 6
AWG 6
AWG 10
•AC-in (see appendix A)
The AC input cable can be connected to the terminal block “AC–in”.
From left to right: “PE” (earth), “N” (neutral) and “L” (phase).
The AC input must be protected by a fuse or magnetic circuit breaker rated at 50A or less, and cable cross-section must
be sized accordingly. If the input AC supply is rated at a lower value, the fuse or magnetic circuit breaker should be down sized
accordingly.
•AC-out-1 (see appendix A)
The AC output cable can be connected directly to the terminal block "AC-out".
From left to right: “PE” (earth), “N” (neutral) and “L” (phase). The Output Neutral is not bonded to ground.

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With its PowerAssist feature the Multi can add up to 3kVA (that is 3000 / 120 = 25A) to the output during periods of peak power
requirement. Together with a maximum input current of 50A this means that the output can supply up to 50 + 25 = 75A.
An earth leakage circuit breaker and a fuse or circuit breaker rated to support the expected load must be included in
series with the output, and cable cross-section must be sized accordingly. The maximum rating of the fuse or circuit breaker
is 75A.
•AC-out-2 (see appendix A)
A second output is available that disconnects its load in the event of battery operation. On these terminals, equipment is connected
that may only operate if AC voltage is available on AC-in, e.g. an electric boiler or an air conditioner.
The load on AC-out-2 is disconnected immediately when the MultiPlus switches to battery operation. After AC power becomes
available on AC-in, the load on AC-out-2 will be reconnected with a delay of approximately 2 minutes. This to allow a genset to
stabilise.
AC-out-2 can support loads of up to 25A. An earth leakage circuit breaker and fuse rated at max. 32A must be connected in series
with AC-out-2.
Note: Loads connected to AC-out-2 will be taken into account in the PowerControl / PowerAssist current limit setting. Loads directly
connected to the AC supply will not be included in the PowerControl / PowerAssist current limit setting.
2.4 Optional Connections
A number of optional connections are possible:
2.4.1 Second Battery
The MultiPlus has a connection for charging a starter battery. For connection see Appendix A.
2.4.2 Voltage Sense
For compensating possible cable losses during charging, two sense wires can be connected with which the voltage directly on the
battery or on the positive and negative distribution points can be measured. Use wire with a cross-section of 0,75mm².
During battery charging, the MultiPlus will compensate the voltage drop over the DC cables up to a maximum of 1 Volt (i.e. 1V over the
positive connection and 1V over the negative connection). If the voltage drop threatens to become larger than 1V, the charging current
is limited in such a way that the voltage drop remains limited to 1V.
2.4.3 Temperature Sensor
The temperature sensor supplied with the product may be used for temperature-compensated charging (see Appendix A). The sensor is
isolated and must be mounted on the batteries minus pole.
2.4.4 Remote Control
The product can be remotely controlled in two ways.
•With an external switch (connection terminal L, see appendix A). Operates only if the switch on the MultiPlus is set to “on”.
•With a Multi Control panel (connected to one of the two RJ48 sockets B, see appendix A). Operates only if the switch on the
MultiPlus is set to “on”.
Only one remote control can be connected, i.e. either a switch or a Multi control panel.
2.4.5. Programmable relays
The relays can be programmed for all kinds of applications, for example as a starter relay for a generating set.
2.4.6 Programmable analog/digital input/output ports
These ports can be used for several purposes. One application is communication with the BMS of a lithium-ion battery.
2.4.7 Auxiliary AC output (AC-out-2)
Besides the usual uninterruptable output, a second output (AC-out-2) is available that disconnects its load in the event of battery
operation. Example: an electric boiler or air conditioner that is allowed to operate only if the genset is running or shore power is
available.
In case of battery operation, AC-out-2 is switched off immediately. After the AC supply has become available, AC-out-2 is reconnected
with a delay of 2 minutes, this to allow a genset to stabilise prior to connecting a heavy load.
2.4.8 Parallel Connection
The MultiPlus can be connected in parallel with several identical devices. To this end, a connection is established between the devices
by means of standard RJ45 UTP cables. The system (one or more Multis plus optional control panel) will require subsequent
configuration (see Section 5).
In the event of connecting MultiPlus units in parallel, the following requirements must be met:
•A maximum of six units connected in parallel.
•Only identical devices may be connected in parallel.
•The DC connection cables to the devices must be of equal length and cross-section.
•If a positive and a negative DC distribution point is used, the cross-section of the connection between the batteries and the DC distribution point must
at least equal the sum of the required cross-sections of the connections between the distribution point and the MultiPlus units.
•Place the MultiPlus units close to each other, but allow at least 10cm for ventilation purposes under, above and beside the units.
•UTP cables must be connected directly from one unit to the other (and to the remote panel). Connection/splitter boxes are not permitted.
•A battery-temperature sensor need only be connected to one unit in the system. If the temperature of several batteries is to be measured, you can
also connect the sensors of other MultiPlus units in the system (with a maximum of one sensor per MultiPlus). Temperature compensation during
battery charging responds to the sensor indicating the highest temperature.
•Voltage sensing must be connected to the master (see Section 5.5.1.4).
•Only one remote control means (panel or switch) can be connected to the system.

5
EN ES Appendix
2.4.9 Three-phase operation
The MultiPlus can also be used in 3-phase wye (Y) configuration. To this end, a connection between the devices is made by means of
standard RJ45 UTP cables (the same as for parallel operation). The system (Multis plus an optional control panel) will require
subsequently configuration (see Section 3).
Pre-requisites: see Section 4.4.8.
Note: the MultiPlus is not suitable for 3-phase delta (Δ) configuration.

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3. Configuration
•Settings may only be changed by a qualified electrical engineer.
•Read the instructions thoroughly before implementing changes.
•During setting of the charger, the AC input must be removed.
3.1 Standard settings: ready for use
On delivery, the MultiPlus is set to standard factory values. In general, these settings are suitable for single-unit operation.
Warning: Possibly, the standard battery charging voltage is not suitable for your batteries! Refer to the manufacturer's
documentation, or to your battery supplier!
Standard MultiPlus factory settings
Inverter frequency 60Hz
Input frequency range 45 - 65Hz
Input voltage range 94 - 143VAC
Inverter voltage 120VAC
Stand-alone / parallel / 3-phase stand-alone
AES (Automatic Economy Switch) off
Ground relay on
Charger on/off on
Battery charge curve four-stage adaptive with BatterySafe mode
Charging current 75% of the maximum charging current
Battery type Victron Gel Deep Discharge (also suitable for Victron AGM Deep Discharge)
Automatic equalisation charging off
Absorption voltage 14.4 / 28.8 / 57.6V
Absorption time up to 8 hours (depending on bulk time)
Float voltage 13.8 / 27.6 / 55.2V
Storage voltage 13.2 / 26.4 / 52.8V (not adjustable)
Repeated absorption time 1 hour
Absorption repeat interval 7 days
Bulk protection on
AC input current limit 50A (= adjustable current limit for PowerControl and PowerAssist functions)
UPS feature on
Dynamic current limiter off
WeakAC off
BoostFactor 2
Programmable relay alarm function
Auxiliary output 25A
PowerAssist on
3.2 Explanation of settings
Settings that are not self-explanatory are described briefly below. For further information, please refer to the help files in the software
configuration programs (see Section 3.3).
Inverter frequency
Output frequency if no AC is present at the input.
Adjustability: 50Hz; 60Hz
Input frequency range
Input frequency range accepted by the MultiPlus. The MultiPlus synchronises within this range with the AC input frequency. The output
frequency is then equal to the input frequency.
Adjustability: 45 – 65Hz; 45 – 55Hz; 55 – 65Hz
Input voltage range
Voltage range accepted by the MultiPlus. The MultiPlus synchronises within this range with the AC input voltage. The output voltage is
then equal to the input voltage.
Adjustability: Lower limit: 94 - 120V
Upper limit: 120 - 143V
Note: the standard lower limit setting of 94V is intended for connection to a weak mains supply, or to a generator with unstable AC
output. This setting may result in a system shut down when connected to a ‘brushless, self excited, externally voltage regulated,
synchronous AC generator’ (synchronous AVR generator). Most generators rated at 10kVA or more are synchronous AVR generators.
The shut down is initiated when the generator is stopped and revs down while the AVR simultaneously ‘tries’ to keep the output voltage
of the generator at 120V.
The solution is to increase the lower limit setting to 110VAC (the output of AVR generators is generally very stable), or to disconnect the
Multi(s) from the generator when a generator stop signal is given (with help of an AC contacor installed in series with the generator).

7
EN ES Appendix
Inverter voltage
Output voltage of the MultiPlus in battery operation.
Adjustability: 95 – 128V
Stand-alone / parallel operation / 2-3 phase setting
Using several devices, it is possible to:
•increase total inverter power (several devices in parallel)
•create a split-phase system by stacking (only for MultiPlus units with 120V output voltage)
•create a split-phase system with a separate autotransformer: see VE autotransformer datasheet and manual
•create a 3-phase system.
The standard product settings are for standalone operation. For parallel, three phase or split phase operation see sections 3.3 / 3.4 and
3.5.
AES (Automatic Economy Switch)
If this setting is turned ‘on’, the power consumption in no-load operation and with low loads is decreased by approx. 20%, by slightly
'narrowing' the sinusoidal voltage. Applicable in stand-alone configuration only.
Search Mode
Instead of the AES mode, the search mode can also be chosen (with help of VEConfigure only).
If search mode is ‘on’, the power consumption in no-load operation is decreased by approx. 70%. In this mode the MultiPlus, when
operating in inverter mode, is switched off in case of no load or very low load, and switches on every two seconds for a short period. If
the output current exceeds a set level, the inverter will continue to operate. If not, the inverter will shut down again.
The Search Mode “shut down” and “remain on” load levels can be set with VEConfigure.
The standard settings are:
Shut down: 40 Watt (linear load)
Turn on: 100 Watt (linear load)
Not adjustable with DIP switches. Applicable in stand-alone configuration only.
Ground relay (see appendix B)
With this relay (H), the neutral conductor of the AC output is grounded to the chassis when the back feed safety relay is open. This
ensures the correct operation of earth leakage circuit breakers in the output.
- If a non-grounded output is required during inverter operation, this function must be turned off, see appendix A.
Not adjustable with DIP switches.
- Models with 50A transfer capacity only: if required an external ground relay can be connected (for a split-phase system
with a separate autotransformer).
See appendix A.
Battery charge curve
The standard setting is ‘Four-stage adaptive with BatterySafe mode’. See User manual Section 2 for a description.
This is the best charging characteristic. See the help files in the software configuration programs for other features.
‘Fixed’ mode can be selected with DIP switches.
Battery type
The standard setting is the most suitable for Victron Gel Deep Discharge, Gel Exide A200, and tubular plate stationary batteries (OPzS).
This setting can also be used for many other batteries: e.g. Victron AGM Deep Discharge and other AGM batteries, and many types of
flat-plate open batteries. Four charging voltages can be set with DIP switches.
With VEConfigure the charge curve can be adjusted to charge any battery type (Nickel Cadmium batteries, Lithium-ion batteries)
Automatic equalisation charging
This setting is intended for flooded tubular plate traction or OPzS batteries. During absorption the voltage limit increases to 2,83V/cell
(34V for a 24V battery) once the charge current has tapered down to less than 10% of the set maximum current.
Not adjustable with DIP switches.
See ’tubular plate traction battery charge curve’ in VEConfigure.
Absorption time
The absortion time depends on the bulk time (adaptive charge curve), so that the battery is optimally charged. If the ‘fixed’ charging
characteristic is selected, the absorption time is fixed. For most batteries, a maximum absorption time of eight hours is suitable. If an
extra high absorption voltage is selected for rapid charging (only possible for open, flooded batteries!), four hours is preferable. With DIP
switches, a time of eight or four hours can be set. For the adaptive charge curve, this determines the maximum absorption time.
Storage voltage, Repeated Absorption Time, Absorption Repeat Interval
See User manual Section 2. Not adjustable with DIP switches.
Bulk Protection
When this setting is ‘on’, the bulk charging time is limited to 10 hours. A longer charging time could indicate a system error (e.g. a
battery cell short-circuit). Not adjustable with DIP switches.

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AC input current limit
These are the current limit settings for which PowerControl and PowerAssist come into operation.
PowerAssit setting range:
From 6,3A to 50A.
Factory setting: the maximum value (50A).
See Section 2, the book 'Energy Unlimited', or the many descriptions of the unique PowerAssist feature on our website
www.victronenergy.com.
AC input current limit
These are the current limit settings for which PowerControl and PowerAssist come into operation.
PowerAssit setting range:
From 5,3A to 50A for models with 50A transfer capacity
Factory setting: the maximum value (50A).
See Section 2, the book 'Energy Unlimited', or the many descriptions of this unique feature on our website www.victronenergy.com.
UPS feature
If this setting is ‘on’ and AC on the input fails, the MultiPlus switches to inverter operation practically without interruption. The MultiPlus
can therefore be used as an Uninterruptible Power Supply (UPS) for sensitive equipment such as computers or communication
systems.
The output voltage of some small generator sets is too unstable and distorted for using this setting – the MultiPlus would continually
switch to inverter operation. For this reason, the setting can be turned off. The MultiPlus will then respond less quickly to AC input
voltage deviations. The switchover time to inverter operation is consequently slightly longer, but most equipment (most computers,
clocks or household equipment) is not adversely impacted.
Recommendation: Turn the UPS feature off if the MultiPlus fails to synchronise, or continually switches back to inverter operation.
Dynamic current limiter
Intended for generators, the AC voltage being generated by means of a static inverter (so-called ‘inverter’ generators). In these
generators, rpm is down-controlled if the load is low: this reduces noise, fuel consumption and pollution. A disadvantage is that the
output voltage will drop severely or even completely fail in the event of a sudden load increase. More load can only be supplied after the
engine is up to speed.
If this setting is ‘on’, the MultiPlus will start supplying extra power at a low generator output level and gradually allow the generator to
supply more, until the set current limit is reached. This allows the generator engine to get up to speed.
This setting is also often used for ‘classical’ generators that respond slowly to sudden load variation.
WeakAC
Strong distortion of the input voltage can result in the charger hardly operating or not operating at all. If WeakAC is set, the charger will
also accept a strongly distorted voltage, at the cost of greater distortion of the input current.
Recommendation: Turn WeakAC on if the charger is hardly charging or not charging at all (which is quite rare!). Also turn on the
dynamic current limiter simultaneously, and reduce the maximum charging current to prevent overloading the generator if necessary.
Note: when WeakAC is on, the maximum charge current is reduced by approximately 20%.
Not adjustable with DIP switches.
BoostFactor
Change this setting only after consulting with Victron Energy or with an engineer trained by Victron Energy!
Not adjustable with DIP switches.
Three programmable relays
The MultiPlus is equipped with 3 programmable relays. The relays can be programmed for all kinds of other applications, for example as
a starter relay for a generating set. The default setting of the relay in postion I (see appendix A, upper right corner) is ‘alarm’.
Not adjustable with DIP switches.
Auxiliary AC output (AC-out-2)
Besides the uninterruptable output, a second output (AC-out-2) is available that disconnects its load in the event of battery operation.
Example: an electric boiler or air conditioner that is allowed to operate only if the genset is running or shore power is available.
In case of battery operation, AC-out-2 is switched off immediately. After the AC supply has become available, AC-out-2 is reconnected
with a delay of 2 minutes, this to allow a genset to stabilise prior to connecting a heavy load.

9
EN ES Appendix
3.3 Configuration by computer
All settings can be changed by means of a computer or with a VE.Net panel (except for the multi-functional relay and the VirtualSwitch
when using VE.Net).
The most common settings can be changed by means of DIP switches (see Section 3.5).
NOTE:
This manual is intended for products with firmware xxxx400 or higher (with x any number)
The firmware number can be found on the microprocessor, after removing the front panel.
It is possible to update older units, as long as that same 7 digit number starts with either 26 or 27. When it starts with 19 or 20 you have
an old microprocessor and it is not possible to update to 400 or higher.
For changing settings with the computer, the following is required:
- VEConfigure3 software: can be downloaded free of charge at www.victronenergy.com.
- A MK3-USB (VE.Bus to USB) interface, and a RJ45 UTP cable.
Alternatively, the Interface MK2.2b (VE.Bus to RS232) and a RJ45 UTP cable can be used.
3.3.1 VE.Bus Quick Configure Setup
VE.Bus Quick Configure Setup is a software program with which systems with a maximum of three Multis (parallel or three phase
operation) can be configured in a simple manner. VEConfigure3 forms part of this program.
The software can be downloaded free of charge at www.victronenergy.com .
3.3.2 VE.Bus System Configurator
For configuring advanced applications and/or systems with four or more Multis, VE.Bus System Configurator software must be used.
The software can be downloaded free of charge at www.victronenergy.com . VEConfigure3 forms part of this program.
3.3.3 More software
Several other software tools are available:
- Assitants: to configure Multis and Quattros for particular applications (such as self-consumption applications).
- apps: to help managing and monitoring a system with a smart phone or tablet (see Support Software on our website,
ColorControl panel needed).
- VRM (Victron Remote Monitoring website): numerical and graphical display of system parameters and history
(ColorControl or Venux GX needed).
- Remote VE Configure: to configure or change settings of a system remotely (ColorControl or Venus GX needed).
- The Multi/Quattro can also be used as a bidirectional inverter operating parallel to the grid, integrated into a customer
designed system (PLC or other) that takes care of the control-loop and grid measurement, see
http://www.victronenergy.com/live/system_integration:hub4_grid_parallel
3.4 Configuration with a VE.Net panel
To this end, a VE.Net panel and the VE.Net to VE.Bus converter is required.
With VE.Net all parameters are accessible, with the exception of the multi-functional relay and the VirtualSwitch.

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3.5 Configuration with DIP switches
A number of settings can be changed using DIP switches (see appendix A, position M).
A number of settings can be changed using DIP switches (see appendix A, position M).
Note: When changing settings with DIP switches in a parallel or split-phase/3-phase system one should be aware that not all settings
are relevant on all Multis. This because some settings will be dictated by the Master or Leader.
Some settings are only relevant in the Master/Leader (ie they are not relevant in a slave or in a follower). Other settings are not relevant
for slaves but are relevant for followers.
A note on used terminology:
A system in which more than one Multi is used to create a single AC phase is called a parallel system. In this case one of the Multis will
control the whole phase, this one is called the master. The others, called slaves, will just listen to the master to determine their action.
It is also possible to create more AC phases (split-phase or 3-phase) with 2 or 3 Multis. In this case the Multi in phase L1 is called the
Leader. The Multis in phase L2 (and L3 if available) will generate the same AC frequency but will follow L1 with a fixed phase shift.
These Multis are called followers.
If more Multis are used per phase in a split-phase or 3-phase system (for instance 6 Multis used to build a 3-phase system with 2 Multis
per phase) then the Leader of the system is also the Master of phase L1. The Followers in phase L2 and L3 will also take the Master
role in phase L2 and L3. All others will be slaves.
Setting up parallel or split-phase/3-phase systems should be done by software, see paragraph 5.3.
TIP: If you don’t want to bother about a Multi being a master/slave/follower then the easiest and most straight forward way is to set
all settings identically on all Multis.
General procedure:
Turn the Multi on, preferably without load and without AC voltage on the input. The Multi will then operate in inverter mode.
Step 1: Set the DIP switches for:
- the required current limitation of the AC input (not relevant for slaves)
- AES (Automatic Economy Switch) (only relevant in systems with 1 Multi per phase)
- limitation of the charging current (only relevant for Master/Leader)
Press the 'Up' button for 2 seconds (upper button to the right of the DIP switches, see appendix A, position K) to store the settings after
the required values have been set. You can now re-use the DIP switches to apply the remaining settings (step 2).
Step 2: other settings, set the dipswitches for:
- Charge voltages (only relevant for Master/Leader)
- Absorption time (only relevant for Master/Leader)
- Adaptive charging (only relevant for Master/Leader)
- Dynamic current limiter (not relevant for slaves)
- UPS function (not relevant for slaves)
- converter voltage (not relevant for slaves)
- converter frequency (only relevant for Master/Leader)
Press the 'Down' button for 2 seconds (lower button to the right of the DIP switches) to store the settings after the DIP switches have
been set in the correct position. You can now leave the DIP switches in the selected positions, so that the ’other settings’ can always be
recovered.
Remarks:
- The DIP switch functions are described in 'top to bottom' order. Since the uppermost DIP switch has the highest number (8),
descriptions start with the switch numbered 8.
For parallel or 3-phase mode, read the whole setting procedure and make a note of the required DIP switch settings before actually
implementing them.
Detailed instruction:
3.5.1 Step 1
3.5.1.1 Current limitation AC input (default: 50A)
If the current demand (Multi load + battery charger) threatens to exceed the set current, the MultiPlus will first reduce its charging
current (PowerControl), and subsequently supply additional power from the battery (PowerAssist), if needed.
The AC input current limit can be set to eight different values by means of DIP switches.
With a Multi Control Panel, a variable current limit can be set for the AC input.

11
EN ES Appendix
Procedure
The AC input current limit can be set using DIP switches ds8, ds7 and ds6 (default setting: 50A).
Procedure: set the DIP switches to the required value:
ds8 ds7 ds6
off off off = 6,3A
off off on = 10A
off on off = 12A
off on on = 16A
on off off = 20A
on off on = 25A
on on off = 30A
on on on = 50A
Remark: Manufacturer-specified continuous power ratings for small generators are sometimes inclined to be rather
optimistic. In that case, the current limit should be set to a much lower value than would otherwise be required on
the basis of manufacturer-specified data.
5.5.1.2 AES (Automatic Economy Switch)
Procedure: set ds5 to the required value:
ds5
off = AES off
on = AES on
Note: The AES option is only effective if the unit is used ‘stand alone’.
5.5.1.3 Battery charge current limitation (default setting 75%)
For maximum battery life, a charge current of 10% to 20% of the capacity in Ah should be applied.
Example: optimal charge current of a 24V/500Ah battery bank: 50A to 100A.
The temperature sensor supplied automatically adjusts the charge voltage to the battery temperature.
If faster charging – and a subsequent higher current – is required:
- The temperature sensor supplied should always be fitted, since fast charging can lead to a considerable temperature rise of the battery
bank. The charge voltage will be adapted to the higher temperature (i.e. lowered) by means of the temperature sensor.
- The bulk charge time will sometimes be so short that a fixed absorption time would be more satisfactory (‘fixed’ absorption time, see
ds5, step 2).
Procedure
The battery charge current can be set in four steps, using DIP switches ds4 and ds3 (default setting: 75%).
ds4 ds3
off off = 25%
off on = 50%
on off = 75%
on on = 100%
Note: when WeakAC is on, the maximum charge current is reduced from 100% to approximately 80%.
3.5.1.4 DIP switches ds2 and ds1 are not used during step 1.
IMPORTANT NOTE:
If the last 3 digits of the Multi firmware is in the 100 range (so the firmware number is xxxx1xx (with x any numer)) then ds1 &
ds2 are used to set a Multi in stand-alone, parallel or three-phase. Please consult the appropriate manual.

12
3.5.1.5 Examples
examples of settings:
DS-8 AC input
on
DS-7 AC input
on
DS-6 AC input
on
DS-5 AES
off
DS-4 Ch. current
on
DS-3 Ch. current
off
DS-2 St.-alone mode
off
DS-1 St.-alone mode
off
DS-8
on
DS-7
on
DS-6
on
DS-5
off
DS-4
on
DS-3
on
DS-2
off
DS-1
off
DS-8
off
DS-7
on
DS-6
on
DS-5
off
DS-4
on
DS-3
on
DS-2
off
DS-1
off
DS-8
on
DS-7
on
DS-6
off
DS-5
on
DS-4
off
DS-3
on
DS-2
off
DS-1
off
Step1, stand-alone
Example 1 (factory setting):
8, 7, 6 AC-in: 50A
5 AES: off
4, 3 Charging current: 75%
2, 1 Stand-alone mode
Step1, stand-alone
Example 2:
8, 7, 6 AC-in: 50A
5 AES: off
4, 3 Charge: 100%
2, 1 Stand-alone
Step1, stand-alone
Example 3:
8, 7, 6 AC-in: 16A
5 AES: off
4, 3 Charge: 100%
2, 1 Stand-alone
Step1, stand-alone
Example 4:
8, 7, 6 AC-in: 30A
5 AES: on
4, 3 Charge: 50%
2, 1 Stand-alone
To store the settings after the required values have been set: press the 'Up' button for 2 seconds (upper button to the right of the DIP
switches, see appendix A, position J). The overload and low-battery LEDs will flash to indicate acceptance of the settings.
We recommend making a note of the settings, and filing this information in a safe place.
The DIP switches can now be used to apply the remaining settings (step 2).
3.5.2 Step 2: Other settings
The remaining settings are not relevant (na) for slaves.
Some of the remaining settings are not relevant for followers (L2, L3). These settings are imposed on the whole system by the leader
L1. If a setting is irrelevant for L2, L3 devices, this is mentioned explicitly.
ds8-ds7: Setting charging voltages (not relevant for L2, L3)
ds8-ds7
Absorption
voltage
Float
voltage
Storage
voltage
Suitable for
off off
14.1
28.2
56.4
13.8
27.6
55.2
13.2
26.4
52.8
Gel Victron Long Life (OPzV)
Gel Exide A600 (OPzV)
Gel MK battery
off on 14.4 28.8
57.6
13.8
27.6
55.2
13.2
26.4
52.8
Gel Victron Deep Discharge
Gel Exide A200
AGM Victron Deep Discharge
Stationary tubular plate (OPzS)
on off 14.7 29.4
58.8
13.8
27.6
55.2
13.2
26.4
52.8
AGM Victron Deep Discharge
Tubular plate traction batteries in
semi-float mode
AGM spiral cell
on on 15.0 30.0
60.0
13.8
27.6
55.2
13.2
26.4
52.8
Tubular plate traction batteries or
OPzS batteries in cyclic mode
ds6: absorption time 8 or 4 hours (na for L2, L3) on = 8 hours off = 4 hours
ds5: adaptive charging characteristic (na for L2, L3) on = active off = inactive (inactive = fixed absorption time)
ds4: dynamic current limiter on = active off = inactive
ds3: UPS function on = active off = inactive
ds2: converter voltage on = 115Voff = 120V
ds1: converter frequency (na for L2, L3) on = 50Hz off = 60Hz
(the wide input frequency range (45-55Hz) is 'on' by default)
Note: - If “adaptive charging algorithm” is on, ds6 sets the maximum absorption time to 8 hours or 4 hours.
- If “adaptive charging algorithm” is off, the absorption time is set to 8 hours or 4 hours (fixed) by ds6.

13
EN ES Appendix
Step 2: Exemplary settings
Example 1 is the factory setting (since factory settings are entered by computer, all DIP switches of a new product are set to ‘off’ and do
not reflect the actual settings in the microprocessor.).
DS-8 Ch. voltage
off
DS-7 Ch. voltage
on
DS-6 Absorpt. time
on
DS-5 Adaptive ch.
on
DS-4 Dyn. Curr. limit
off
DS-3 UPS function:
on
DS-2 Voltage
on
DS-1 Frequency
on
DS-8
off
DS-7
off
DS-6
on
DS-5
on
DS-4
off
DS-3
off
DS-2
on
DS-1
on
DS-8
on
DS-7
off
DS-6
on
DS-5
on
DS-4
on
DS-3
off
DS-2
off
DS-1
on
DS-8
on
DS-7
on
DS-6
off
DS-5
off
DS-4
off
DS-3
on
DS-2
off
DS-1
off
Step 2
Example 1 (factory setting):
8, 7 GEL 14,4V
6 Absorption time: 8 hours
5 Adaptive charging: on
4 Dynamic current limit: off
3 UPS function: on
2 Voltage: 120V
1 Frequency: 50Hz
Step 2
Example 2:
8, 7 OPzV 14,1V
6 Abs. time: 8 h
5 Adaptive ch.: on
4 Dyn. Curr. limit: off
3 UPS function: off
2 Voltage: 120V
1 Frequency: 50Hz
Step 2
Example 3:
8, 7 AGM 14,7V
6 Abs. time: 8 h
5 Adaptive ch: on
4 Dyn. Curr. limit: on
3 UPS function: off
2 Voltage: 120V
1 Frequency: 50Hz
Step 2
Example 4:
8, 7 Tub.-plate 15V
6 Abs. time: 4 h
5 Fixed abs. time
4 Dyn. Curr. limit: off
3 UPS function: on
2 Voltage: 120V
1 Frequency: 60Hz
To store the settings after the required values have been set: press the 'Down' button for 2 seconds (lower button to the right of the DIP
switches). The temperature and low-battery LEDs will flash to indicate acceptance of the settings.
The DIP switches can be left in the selected positions, so that the ’other settings’ can always be recovered.

14
4. Technical specifications
MultiPlus
12/3000/120-50 120V
24/3000/70-50 120V
PowerControl / PowerAssist
Yes
AC input
Input voltage range: 95-140VAC; Input frequency: 45 – 65Hz; Power factor: 1
Maximum feed through current
50
Minimum AC supply current capacity for
PowerAssist (A)
5,3
INVERTER
Input voltage range (V DC)
9,5 – 17
19 – 33
Output
(1)
Output voltage: 120 VAC ± 2% Frequency
: 6
0 Hz ± 0,1%
Cont. output power at 25°C / 77°F (VA) (3)
3000
3000
Cont. output power at 25°C / 77°F (W)
2400
2400
Cont. output power at 40°C / 104°F (W)
2200
2200
Cont. output power at 65°C / 150°F (W)
1700
3000
Peak power (W)
6000
6000
Maximum efficiency (%)
93
94
Zero-load power (W) 20 20
Zero-load power in AES mode (W) 15 15
Zero-load power in Search mode (W) 8 10
Maximum output current
64A peak, 45Arms for 1 sec.
CHARGER
AC Input
Input voltage range: 95-140VAC Input frequency: 45 – 65Hz Power factor: 1
Charge voltage 'absorption' (V DC)
14,4
28,8
Charge voltage 'float' (V DC)
13,8
27,6
Storage mode (V DC)
13,2
26,4
Charge current house battery (A) (4)
120
70
Charge current starter battery (A)
4
Battery temperature sensor
Yes
GENERAL
Auxiliary output
Max. 32A Switches off when no external AC source available
Programmable relay
(5)
Yes, 3x
Protection (2)
a - g
VE.Bus communication port
For parallel and three phase operation, remote monitoring and system integration
General purpose comm. port
Yes, 2x
Common Characteristics
Operating temp.: -40 to +65°C/ -40 - 150°F (fan assisted cooling)
Humidity (non-condensing) : max 95%
ENCLOSURE
Common Characteristics
Material & Colour: aluminium (blue RAL 5012) Protection category: IP 21
Battery-connection
M8 bolts (2 plus and 2 minus connections)
120V AC-connections
Screw terminals 13mm² (6 AWG)
Weight (kg)
19
Dimensions (hxwxd in mm)
362 x 258 x 218
STANDARDS
Safety
EN 60335-1, EN 60335-2-29
Emission / Immunity
EN 55014-1, EN 55014-2, EN 61000-3-3
Automotive Directive
2004/104/EC
1) Can be adjusted to 50Hz;
2) Protection
a. Output short circuit
b. Overload
c. Battery voltage too high
d. Battery voltage too low
e. Temperature too high
f. 120VAC on inverter output
g. Input voltage ripple too high
3) Non linear load, crest factor 3:1
4) At 25°C ambient
5) Programmable relay which can be set for general alarm, DC undervoltage or genset start/stop function

1
EN ES Appendix
1. INSTRUCCIONES DE SEGURIDAD IMPORTANTES - ¡GUÁRDELAS!
En general
Lea en primer lugar la documentación que acompaña al producto para familiarizarse con las indicaciones de seguridad y las
instrucciones antes de utilizarlo.
Este producto se ha diseñado y comprobado de acuerdo con los estándares internacionales. El equipo debe utilizarse exclusivamente
para la aplicación prevista.
Aviso - Estas instrucciones de servicio son para uso exclusivo de personal
cualificado. Para reducir el riesgo de electrocución, no lleve a cabo ninguna
revisión excepto las especificadas en las instrucciones de funcionamiento, a menos
que esté cualificado para ello.
ADVERTENCIA: PELIGRO DE DESCARGA ELÉCTRICA
El producto se usa junto con una fuente de alimentación permanente (batería). Aunque el equipo esté apagado, puede producirse una
tensión eléctrica peligrosa en los terminales de entrada y salida. Apague siempre la alimentación CA y desconecte la batería antes de
realizar tareas de mantenimiento.
El producto no contiene piezas en su interior que puedan ser manipuladas por el usuario. No retire el panel frontal ni ponga el producto
en funcionamiento si no están colocados todos los paneles. Las operaciones de mantenimiento deben ser realizadas por personal
cualificado.
No utilice nunca el equipo en lugares donde puedan producirse explosiones de gas o polvo. Consulte las especificaciones
suministradas por el fabricante de la batería para asegurarse de que puede utilizarse con este producto. Las instrucciones de seguridad
del fabricante de la batería deben tenerse siempre en cuenta.
AVISO: no levante objetos pesados sin ayuda.
Instalación
Lea las instrucciones antes de comenzar la instalación.
Este producto es un dispositivo de clase de seguridad I (suministrado con terminal de puesta a tierra para seguridad). Sus terminales
de salida CA deben estar puestos a tierra continuamente por motivos de seguridad. Hay otro punto de puesta a tierra
adicional en la parte exterior del producto. Si se sospecha que la puesta a tierra está dañada, el equipo debe desconectarse y evitar
que se pueda volver a poner en marcha de forma accidental; póngase en contacto con personal técnico cualificado.
Compruebe que los cables de conexión disponen de fusibles y disyuntores. No sustituya nunca un dispositivo de protección por un
componente de otro tipo. Consulte en el manual las piezas correctas.
La instalación debe llevarse a cabo según las normas del Código Eléctrico Canadiense, Parte 1. El método de cableado deberá seguir
las normas del Código Eléctrico Nacional, ANSI/NFPA 70.
Antes de encender el dispositivo compruebe si la fuente de alimentación cumple los requisitos de configuración del producto descritos
en el manual.
Compruebe que el equipo se utiliza en las condiciones adecuadas de funcionamiento. No lo utilice en un ambiente húmedo o con
polvo.
Compruebe que hay suficiente espacio alrededor del producto para su ventilación y que los orificios de ventilación no están tapados.
Instale el producto en un entorno a prueba del calor. Compruebe que no haya productos químicos, piezas de plástico, cortinas u otros
textiles, etc., en las inmediaciones del equipo.
Transporte y almacenamiento
Para transportar o almacenar el producto, asegúrese de que los cables de alimentación principal y de la batería estén desconectados.
No se aceptará ninguna responsabilidad por los daños producidos durante el transporte si el equipo no lleva su embalaje original.
Guarde el producto en un entorno seco, la temperatura de almacenamiento debe oscilar entre –20°C y 60°C.
Consulte el manual del fabricante de la batería para obtener información sobre el transporte, almacenamiento, recarga y eliminación de
la batería.

2
2. Instalación
Este producto debe instalarlo exclusivamente un ingeniero eléctrico cualificado.
2.1 Ubicación
El producto debe instalarse en una zona seca y bien ventilada, tan cerca como sea posible de las baterías. Debe dejarse un espacio de
al menos 10cm. alrededor del aparato para refrigeración.
Una temperatura ambiente demasiado alta tendrá como resultado:
•Una menor vida útil.
•Una menor corriente de carga.
•Una menor capacidad de pico, o que se apague el inversor.
•Nunca coloque el aparato directamente sobre las baterías.
MultiPlus puede montarse en la pared. Para su instalación, en la parte posterior de la carcasa hay dos agujeros y un gancho (ver
apéndice G). El dispositivo puede colocarse horizontal o verticalmente. Para que la ventilación sea óptima es mejor colocarlo
verticalmente.
La parte interior del producto debe quedar accesible tras la instalación.
Intente que la distancia entre el producto y la batería sea la menor posible para minimizar la pérdida de tensión por los cables.
Por motivos de seguridad, este producto debe instalarse en un entorno
resistente al calor. Debe evitarse en su proximidad la presencia de productos
químicos, componentes sintéticos, cortinas u otros textiles, etc.
Cada sistema requiere un método de desconexión de los circuitos CA y CC. Si
el dispositivo de protección de sobrecorriente es un disyuntor, este también
servirá para la desconexión. Si se utilizan fusibles, se deberá instalar
interruptores de desconexión por separado entre la fuente de alimentación y los
fusibles.
Para reducir el riesgo de incendio, no lo conecte a un centro de carga CA (panel
disyuntor) que tenga circuitos derivados multicable.
2.2 Conexión de los cables de batería
Para utilizar toda la capacidad del producto, deben utilizarse baterías con capacidad suficiente y cables de batería de sección
adecuada. Los cables CC deben ser de cobre y temperatura nominal de 90ºC (194ºF) Ver tabla.
12/3000/120 24/3000/70
Capacidad de batería recomendada
(Ah)
400-1200 200-700
Corriente nominal
250A
125A
Fusible CC recomendado
400A
300A
Sección recomendada (para
terminales + y -) 2x AWG 1/0 AWG 1/0
“2x” significa dos cables positivos y dos negativos.
Terminales de cable recomendados
tamaño
AWG 1/0
Molex nº de pieza 19221-0240
AWG 2
Molex nº de pieza 19221-0233
Observación: La resistencia interna es el factor determinante al trabajar con baterías de poca capacidad. Por favor, consulte a su
proveedor o las secciones relevantes de nuestro libro “Energy Unlimited”, que puede descargarse de nuestro sitio Web.
Procedimiento
Conecte los cables de batería de la manera siguiente:

3
EN ES Appendix
Utilice una llave dinamométrica aislada para no cortocircuitar la batería.
Torsión máxima: 11 Nm.
Evite que los cables de la batería entren en contacto.
•Quite los cuatro tornillos de la parte frontal de la carcasa y retire el panel frontal.
•Conecte los cables de la batería: ver apéndice A.
•En primer se coloca el conector, después la arandela plana, la arandela de presión y la tuerca. Apriete bien las tuercas para que la
resistencia de contacto sea mínima.
2.3 Conexión del cableado CA
El MultiPlus es un dispositivo de clase de seguridad I (suministrado con
terminal de puesta a tierra para seguridad). Los terminales de entrada y
salida CA y/o la puesta a tierra de la parte exterior deben disponer de
una toma de tierra permanente por motivos de seguridad.
El MultiPlus dispone de un relé de puesta a tierra (relé H, ver apéndice B)
que conecta automáticamente la salida del neutro a la carcasa si no
hay alimentación CA externa disponible. Si hay alimentación CA
externa, el relé de puesta a tierra H se abrirá antes de que el relé de
seguridad de entrada se cierre. De esta forma se garantiza el
funcionamiento correcto del disyuntor para las fugas a tierra que está
conectado a la salida.
─En una instalación fija, una puesta a tierra ininterrumpida puede
asegurarse mediante el cable de puesta a tierra de la entrada CA. En
caso contrario, se deberá poner a tierra la carcasa.
─En una instalación móvil (por ejemplo con una toma de corriente de
red), la interrupción de la conexión de la toma de puerto
desconectará simultáneamente la conexión de puesta a tierra. En tal
caso, la carcasa debe conectarse al chasis (del vehículo) o al casco o
placa de toma de tierra (de la embarcación).
En el caso de los barcos, no se recomienda la conexión directa a la toma
de puerto debido a la posible corrosión galvánica. La solución es utilizar un
transformador aislante.
La unidad o sistema se proporciona con límites de disparo fijos y no deben
agregarse por encima de 30 Kw en un único punto conexiones comunes.
Los bloques terminales se encuentran en el circuito impreso, ver apéndice A. El cable de toma de puerto o de red debe conectarse al
Multi con un cable de cobre de 90ºC (194ºF) de tres hilos. Par de apriete mínimo 5,1Nm.
AC-in
AC-Out-1
AC-OUT-2
Corriente nominal
50A
75A
25A
Fusible o disyuntor recomendado
50A
75A
32A
Tamaño de cable mínimo
AWG 6
AWG 6
AWG 10
•- AC-in (ver apéndice A)
El cable de entrada CA puede conectarse al bloque terminal “AC–in”.
De izquierda a derecha: “PE” (tierra), “N” (neutro) y “L” (fase).
La entrada CA debe protegerse por medio de un fusible o de un disyuntor magnético de 50 A o menos, y el cable debe
tener una sección suficiente. Si la alimentación CA tuviese una capacidad nominal menor, la capacidad del fusible o disyuntor
magnético también deberá reducirse.
•- AC-out-1 (ver apéndice A)Elcable de s alida CA puede conectarse directamente al bloque terminal "AC-out".
De izquierda a derecha: “PE” (tierra), “N” (neutro) y “L” (fase). El neutro de salida no está conectado a tierra.
Gracias a su función PowerAssist, el Multi puede añadir a la salida hasta 3 kVA (esto es, 3000 / 120 = 25A) en periodos de gran

4
demanda de potencia. Junto con una corriente de entrada máxima de 50A, significa que la salida puede suministrar hasta
50 + 25 = 75A.
Debe incluirse un disyuntor para las fugas a tierra y un fusible o disyuntor capaz de soportar la carga esperada, en serie
con la salida, y con una sección de cable adecuada. La potencia nominal máxima del fusible o disyuntor es de 75A.
•AC-out-2 (ver apéndice A)H ay una segunda salida que desconecta su carga en caso de funcionam iento con batería.E n estos
terminales, se conectan equipos que sólo funcionan si hay tensión CA en las entradas AC-in, por ejemplo una caldera
eléctrica o un aire acondicionado.
La cargad de AC-out-2 se desconecta inmediatamente cuando el MultiPlus cambia a funcionamiento con batería. Una vez que las
entradas AC-in disponen de CA, la carga en AC-out-2 se volverá a conectar, en un lapso de aproximadamente 2 minutos. Esto
permite que se estabilice el generador.
AC-out-2 puede soportar cargas de hasta 25A. Se debe conectar un disyuntor para las fugas a tierra y un fusible de 32A en serie
con AC-out-2.
Nota: Las cargas conectadas a AC-out-2 serán tenidas en cuenta al configurar el límite de corriente del PowerControl / PowerAssist.
Las cargas directamente conectadas a la fuente de alimentación CA no se incluirán en la configuración del límite de corriente del
PowerControl / PowerAssist.
2.4 Opciones de conexión
Existen varias opciones de conexión distintas:
2.4.1 Segunda batería
El MultiPlus dispone de una conexión para cargar una batería de arranque. Para su conexión, ver Apéndice A.
2.4.2 Sonda de tensión
Para compensar las posibles pérdidas por cable durante la carga, se pueden conectar dos sondas con las que se mide la tensión
directamente en la batería o en los puntos de distribución positivos y negativos. Utilice cable con una sección de 0,75 mm².
Durante la carga de la batería, el MultiPlus compensará la caída de tensión en los cables CC hasta un máximo de 1 voltio (es decir, 1 V
en la conexión positiva y 1 V en la negativa). Si la caída de tensión puede ser superior a 1 V, la corriente de carga se limita de forma
que la caída de tensión sigue siendo de 1 V.
2.4.3 Sensor de temperatura
El sensor de temperatura suministrado con el producto puede utilizarse para cargas compensadas por temperatura (ver Anexo A). El
sensor está aislado y debe montarse en la polaridad negativa de la batería.
2.4.4 Control remoto
El producto puede manejarse de forma remota de dos maneras:
•Con un conmutador externo (terminal de conexión L, ver apéndice A). Sólo funciona si el conmutador del MultiPlus está en “on”.
•Con un panel Multi Control (conectado a una de las dos tomas RJ48 B, véase el apéndice A). Sólo funciona si el conmutador del
MultiPlus está en “on”.
Sólo se puede conectar un control remoto, es decir, o bien un conmutador o un panel Multi Control.
2.4.5. Relés programables
Estos relé puede programarse para cualquier tipo de aplicación, por ejemplo como relé de arranque para un grupo generador.
2.4.6 Puertos programables analógicos/digitales de entrada/salida
Estos puertos pueden usarse para distintos fines. Una aplicación sería la de comunicarse con el BMS o con una batería de iones de
litio.
2.4.7 Salida de CA auxiliar (AC-out-2)
Además de la salida ininterrumpida, hay una segunda salida (AC-out-2) que desconecta su carga en caso de funcionamiento con
batería. Por ejemplo: una caldera eléctrica o un aire acondicionado que sólo pueden funcionar si el generador está en marcha o hay
toma de puerto.
En caso de funcionamiento con batería, AC-out-2 se desconectaría inmediatamente. Una vez dispongamos de nuevo de CA, AC-out-2
se volvería a conectar, con un lapso de unos 2 minutos que permite al generador estabilizarse antes de conectar una carga fuerte.
2.4.8 Conexión en paralelo
El MultiPlus puede conectarse en paralelo con varios dispositivos idénticos. Para ello se establece una conexión entre los dispositivos
mediante cables RJ45 UTP estándar. El sistema (uno o más Multis más un panel de control opcional) tendrá que configurarse
posteriormente (ver Sección 5).
En el caso de conectar las unidades MultiPlus en paralelo, deben cumplirse las siguientes condiciones:
•Un máximo de seis unidades conectadas en paralelo.
•Sólo deben conectarse en paralelo dispositivos idénticos.
•Los cables de conexión de CC a los dispositivos deben tener la misma longitud y sección.
•Si se utiliza un punto de distribución CC negativo y otro positivo, la sección de la conexión entre las baterías y el punto de distribución CC debe ser al
menos igual a la suma de las secciones requeridas para las conexiones entre el punto de distribución y las unidades MultiPlus.
•Coloque las unidades MultiPlus cerca entre sí, pero deje al menos 10cm para ventilación por debajo, encima y junto a las unidades.
•Los cables UTP deben conectarse directamente desde una unidad a la otra (y al panel remoto). No se permiten cajas de conexión/distribución.
•El sensor de temperatura de la batería sólo tiene que conectarse a una unidad del sistema. Si hay que medir la temperatura de varias baterías,
también se pueden conectar los sensores de otras unidades MultiPlus en el sistema (con un máximo de un sensor por MultiPlus). La compensación
de temperatura durante la carga de la batería responde al sensor que indique la máxima temperatura.
•El sensor de tensión debe conectarse al maestro (ver Sección 5.5.1.4).
•Sólo puede conectarse al sistema un medio de control remoto (panel o conmutador).
2.4.9 Funcionamiento trifásico
El MultiPlus también puede utilizarse en una configuración trifásica en “i” griega (Y). Para ello, se hace una conexión entre los
dispositivos con cables UTP RJ45 estándar (igual que para el funcionamiento en paralelo). El sistema (Multis más un panel de control
opcional) tendrá que configurarse posteriormente (ver Sección 3).
Requisitos previos: ver Sección 4.4.8.
Nota: El MultiPlus no es adecuado para una configuración trifásica delta (Δ).