Victron energy Phoenix MultiPlus 12/3000/120 Manuel page 25

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 then 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 (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.
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.
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