Victron energy MultiPlus Compact 12/800/35-16 User manual

Manual
Handleiding
Manuel
Anleitung
Manual
MultiPlus Compact
12 | 800 | 35-16 230V 24 | 800 | 16-16 230V
12 | 1200 | 50-16 230V 24 | 1200 | 25-16 230V
12 | 1600 | 70-16 230V 24 | 1600 | 40-16 230V

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1. SAFETY INSTRUCTIONS
General
Please familiarize yourself with the safety features and instructions by first reading the
documentation supplied with this product before using the equipment. This product has
been designed and tested in accordance with international standards. The equipment
must be used exclusively for the purpose for which it was designed.
WARNING: ELECTRIC SHOCK HAZARD.
The product is used in conjunction with a permanent energy source (battery). Input and/or
output terminals may still be dangerously energized, even when the equipment is
switched off. Always switch off the AC supply and the battery before carrying out
maintenance or servicing the product.
The product has no internal user-serviceable components. Do not remove the front plate
or operate the product if any panels have been removed. All servicing must be
undertaken by qualified personnel.
Never use the product where there is a risk of gas or dust explosions. Consult the battery
manufacturer's information to ascertain that the product is intended for use in conjunction
with the battery. Always comply with the battery manufacturer's safety instructions.
WARNING: Do not lift heavy loads without assistance.
Installation
Read the installation instructions in the installation manual before installing the equipment.
This is a Safety Class I product (supplied with a protective grounding terminal).
Uninterruptible protective grounding must be provided at the AC input and/or output
terminals. Alternatively the grounding point located externally on the product may be
used. Whenever it is likely that the grounding protection has been damaged, the product must
be turned off and secured against unintended operation; please contact qualified service staff.
Ensure that the DC and AC input cables are fused and fitted with circuit breakers. Never
replace a safety component with a different type. Consult the manual to determine the correct
component.
Before applying power, ensure that the available power source matches the configuration
settings of the product as described in the manual.

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Ensure that the equipment is used under the correct ambient conditions. Never operate the
product in a wet or dusty environment. Ensure there is adequate free space for ventilation
around the product and check that the ventilation vents are not blocked.
Ensure that the required system voltage does not exceed the product's capacity.
Transport and Storage
Ensure that the mains power and battery leads have been disconnected before storing or
transporting the product.
No liability can be accepted for any transport damage if the equipment is shipped in non-
original packaging.
Store the product in a dry environment; the storage temperature must be between -20°C and
60°C.
Consult the battery manufacturer's manual in respect of transport, storage, charging,
recharging and disposal of the battery.

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2. DESCRIPTION
2.1 General
MultiPlus Compact-functional
The MultiPlus Compact gets its name from the multiple functions it can perform. It is a
powerful true sine wave inverter, a sophisticated battery charger that features adaptive
charge technology and a high-speed AC transfer switch in a single compact enclosure.
Beside these primary functions, however, the MultiPlus Compact has several advanced
features that provide a range of new applications as outlined below.
Uninterrupted AC power
In the event of a grid failure, or shore or generator power being disconnected, the inverter
within the MultiPlus Compact is automatically activated and takes over supply to the
connected loads. This happens so fast (less than 20 milliseconds) that computers and
other electronic equipment will continue to operate without disruption.
Parallel and 3-phase operation capability
Up to 6 inverters can operate in parallel to achieve higher power output.
Operation in 3-phase configuration is also possible.
PowerControl – Dealing with limited generator or shore side power
With a Multi Control Panel a maximum generator or shore current can be set. The
MultiPlus Compact will then take account of other AC loads and use whatever is extra for
charging, thus preventing the generator or shore supply from being overloaded.
PowerAssist – Boosting the capacity of shore or generator power
This feature takes the principle of PowerControl to a further dimension allowing the MultiPlus
Compact to supplement the capacity of the alternative source. Where peak power is so often
required only for a limited period, it is possible to reduce the size of generator needed or
conversely enable more to be achieved from the typically limited shore connection. When the
load reduces, the spare power is used to recharge the battery.
Programmable relay
The MultiPlus is equipped with a programmable relay that by default is set as an alarm relay.
The relay can be programmed for all kinds of other applications however, for example as a
starter relay for a generator.
2.2 Battery charger
Adaptive 4-stage charging characteristics: bulk – absorption – float – storage
The microprocessor-driven adaptive battery management system can be adjusted for various
types of batteries. The adaptive function automatically adapts the charging process to battery
use.
The right amount of charge: variable absorption time
In the event of slight battery discharge, absorption is kept short to prevent overcharging and
excessive gas formation. After deep discharging, the absorption time is automatically
extended in order to fully charge the battery.

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Preventing damage due to excessive gassing: the BatterySafe mode
If, in order to quickly charge a battery, a high charge current in combination with a high
absorption voltage has been chosen, damage due to excessive gassing will be prevented by
automatically limiting the rate of voltage increase once the gassing voltage has been reached.
Less maintenance and aging when the battery is not in use: the Storage mode
The Storage mode kicks in whenever the battery has not been subjected to discharge during
24 hours. In the Storage mode float voltage is reduced to 2,2V/cell (13,2V for 12V battery) to
minimise gassing and corrosion of the positive plates. Once a week the voltage is raised
back to the absorption level to ‘equalize’ the battery. This feature prevents stratification of the
electrolyte and sulphation, a major cause of early battery failure.
Two DC outputs for charging two batteries
The main DC terminal can supply the full output current. The second output, intended for
charging a starter battery, is limited to 4A and has a slightly lower output voltage.
Increasing service life of the battery: temperature compensation
The temperature sensor (supplied with the product) serves to reduce charging voltage when
battery temperature rises. This is particularly important for maintenance-free batteries, which
could otherwise dry out by overcharging.
More on batteries and charging
Our book ‘Energy Unlimited’ offers further information on batteries and battery charging, and
is available free of charge on our website (see www.victronenergy.com -> Support &
Downloads’ -> General Technical Information). For more information on adaptive charging,
please also refer to the General Technical Information our website.
2.3 Self consumption – solar energy storage systems
When the Multi/Quattro is used in a configuration in which it will feed back energy to the grid it
is required to enable grid code compliance by selecting the grid code country setting with the
VEConfigure tool.
This way the Multi/Quattro can comply to the local rules.
Once set, a password will be required to disable grid code compliance or change grid code
related parameters.
If the local grid code is not supported by the Multi/Quattro an external certified interface device
should be used to connect the Multi/Quattro to the grid.
Special note for Australian customers: IEC62109.1 certification and CEC approval for off-grid
use does NOT imply approval for grid-interactive installations. Additional certification to IEC
62109.2 and AS 4777.2.2015 are required before grid-interactive systems can be
implemented. Please check Clean Energy Council website for current approvals.

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3. OPERATION
3.1 On/Off/Charger Only Switch
When switched to "on", the product is fully functional. The inverter will come into
operation and the LED "inverter on" will light up.
An AC voltage connected to the "AC in" terminal will be switched through to the "AC out"
terminal, if within specifications. The inverter will switch off, the "mains on" LED will light
up and the charger commences charging. The "bulk", "absorption" or "float" LEDs will light
up, depending on the charger mode.
If the voltage at the "AC-in" terminal is not within specifacations, the inverter will switch
on.
When the switch is switched to "charger only", only the battery charger of the MultiPlus
will operate (if mains voltage is present). In this mode input voltage also is switched
through to the "AC out" terminal.
NOTE: When only the charger function is required, ensure that the switch is switched to
"charger only". This prevents the inverter from being switched on if the mains voltage is
lost, thus preventing your batteries from running flat.
3.2 Remote control
Remote control is possible with a 3-way switch or with a Multi Control panel.
The Multi Control panel has a simple rotary knob with which the maximum current of the AC
input can be set: see PowerControl and PowerAssist in Section 2.
For the appropriate DIP switch settings, see sect. 5.5.1.
3.3 Equalisation and forced absorption
3.3.1 Equalisation
Traction batteries may require regular equalisation charging. In the equalisation mode, the
MultiPlus will charge with increased voltage for one hour (1V above the absorption voltage for
a 12V battery, 2V for a 24V battery). The charging current is then limited to 1/4 of the set
value. The “bulk” and “absorption” LEDs flash intermittently.
Equalisation mode supplies a higher charging voltage than most DC consuming
devices can cope with. These devices must be disconnected before additional
charging takes place.
3.3.2 Forced absorption
Under certain circumstances, it can be desirable to charge the battery for a fixed time at
absorption voltage level. In Forced Absorption mode, the MultiPlus will charge at the normal
absorption voltage level during the set maximum absorption time. The “absorption” LED will
be ‘on’.

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3.3.3 Activating equalisation or forced absorption
The MultiPlus can be put into both these states from the remote panel as well as with the front
panel switch, provided that all switches (front, remote and panel) are set to “on” and no
switches are set to “charger only”.
In order to put the MultiPlus in this state, the procedure below should be followed.
If the switch is not in the required position after following this procedure, it can be switched
over quickly once. This will not change the charging state.
NOTE: Switching from “on” to “charger only” and vice versa, as described below, must be done quickly. The
switch must be toggled such that the intermediate position is 'skipped', as it were. If the switch remains in
the “off” position even for a short time, the device may be turned off. In that case, the procedure must be
restarted at step 1. A certain degree of familiarisation is required when using the front switch on the
Compact in particular. When using the remote panel, this is less critical.
Procedure:
1. Check whether all switches (i.e. front switch, remote switch or remote panel switch if present) are in the
“on” position.
2. Activating equalisation or forced absorption is only meaningful if the normal charging cycle is completed
(charger is in 'Float').
3. To activate:
a. Switch rapidly from “on” to “charger only” and leave the switch in this position for ½ to 2 seconds.
b. Switch rapidly back from “charger only” to “on” and leave the switch in this position for ½ to 2 seconds.
c. Switch once more rapidly from “on” to “charger only” and leave the switch in this position.
4. On the MultiPlus the three LEDs “Inverter”, “Charger” and “Alarm” will now flash 5 times.
If a MultiControl panel is connected, on the panel the LEDs “bulk”, “absorption” and “float” will also flash 5
times.
5. Subsequently, on the MultiPlus the LEDs “Bulk”, “Absorption” and “Float” will each light during 2
seconds.
If a MultiControl panel is connected, on the panel the LEDs “Bulk”, “Absorption” and “Float” will also each
light during 2 seconds.
6.
a. If the switch on the MultiPlus is set to “on” while the “Bulk” LED lights, the charger will switch to
equalisation.
Similarly, if the switch on the MultiControl panel is set to “on” while the “Bulk” LED lights, the charger will
switch to equalisation.
b. If the switch on the MultiPlus is set to “on” while the “Absorption” LED lights, the charger will switch to
forced absorption.
Similarly, if the switch on the MultiControl panel is set to “on” while the “Absorption” LED lights, the charger
will switch to forced absorption.
c. If the switch on the MultiPlus is set to “on” after the three LED sequence has finished, the charger will
switch to “Float”.
Similarly, if the switch on the MultiControl panel is set to “on” after the three LED sequence has finished,
the charger will switch to “float”.
d. If the switch has not been moved, the MultiPlus will remain in ‘charger only’ mode and switch to “Float”.

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3.4 LED Indications
Inverter
The inverter is switched on and supplies
power to the load. Battery operation.
inverter on
charger off
alarm charger only
The inverter is switched on and supplies
power to the load.
Pre alarm: overload, or
battery voltage low, or
inverter temperature high
inverter on
charger off
alarm
charger only
The inverter is switched off.
Alarm: overload, or
battery voltage low, or
inverter temperature hig, or
DC ripple voltage on battery
terminal was too high.
inverter on
charger off
alarm charger only
Charger
The AC input voltage is switched through
and the charger operates in bulk or
absorption mode.
inverter on
charger off
alarm charger only
The AC input voltage is switched through
and the charger is switched off.
The battery charger can not reach battery
end voltage (bulk protection mode).
inverter on
charger off
alarm charger only
LED off
LED flashes
LED illuminated

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The AC input voltage is switched through
and the charger operates in bulk or
absorption mode.
inverter on
charger off
alarm charger only
The AC input voltage is switched through
and the charger operates in float mode.
inverter on
charger
off
alarm charger only
Remote Control panel (optional)
Power Control and PowerAssist indication
inverter on
mains on
overload bulk
low battery absorption
temperature float
on charger only
off
Note: When the LED’s “overload” and “low battery” are on simultaneously, the Multi(Plus) or
Inverter Compact has switched off due to excessive DC ripple voltage.