Victron energy Quattro 12/5000/200 User's Manual & Installation Manual page 17

Dynamic current limiter
Intended for generators, the AC voltage being generated by means of a static inverter (so-called 'inverter' generators). In these
generators, rotational speed 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 Quattro 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.
Multi-functional relay
By default, the multi-functional 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). Not adjustable with DIP switches.
VirtualSwitch
The VirtualSwitch is a software function in the Quattro microprocessor. The inputs of this function are parameters that can be selected
with VEConfigure (e.g. certain alarms or voltage levels). The output is binary (0 or 1). The output can connected to a binary
microprocessor output (e.g. the multi-functional relay, or the relay in one of the AC inputs).
If connected to the multi-functional relay, and with battery voltage and time as input values, for example, the VirtualSwitch can be
configured to supply a generator starting signal.
If connected to an AC input relay, and with battery voltage and time as input, for example, the connected mains supply can be
interrupted.
Application: A house or an office connected to the public mains, fitted with solar panels with energy storage in batteries.
The batteries are used to prevent return delivery to the mains. During the day, redundant solar energy is stored in
batteries. This energy is used in the evenings and at night. An energy shortfall is compensated by the mains. The
Quattro converts the battery DC voltage to AC. The power is always less than or equal to the power consumption, so
that return delivery to the mains does not occur. In the event of mains failure, the Quattro isolates the premises from the
mains, which become autonomous (self-sufficient). In this way, a solar energy installation or a combined micro-scale
heating and power plant can be economically used in areas with an unreliable mains supply and/or financially
unfavourable energy-return conditions.
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