Victron energy MultiPlus 12 500 20 Manual página 15

Recommendation: Turn the UPS feature off if the Multi fails to synchronise, or continually
switches back to inverter operation.
*In general, the UPS setting can be left 'on' if the Multi is connected to a generator with a
'synchronous AVR regulated alternator'.
The UPS mode may have to be set to 'off' if the Multi is connected to a generator with a
'synchronous capacitor regulated alternator' or an asynchronous alternator.
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 Multi will reduce charge current until the set current limit is reached.
This allows the generator engine to get up to speed.
This setting is also often used for 'classic' 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.
BoostFactor
Change this setting only after consulting with Victron Energy or with an engineer trained by
Victron Energy!
Programmable relay
By default, the programmable relay is set as an alarm relay, i.e. the relay will de-energise in
the event of an alarm or a pre-alarm (inverter almost too hot, ripple on the input almost too
high, battery voltage almost too low).
VEConfigure software
With VEConfigure software the relay can also be programmed for other purposes, for example
to provide a generator starting signal.
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