Victron energy 120-50 Manual página 18

AC input current limit AC-in-1 (generator) / AC-in-2 (shore/grid supply)
These are the current limit settings at which PowerControl and PowerAssist come into operation.
PowerAssit setting range:
- From 5,3A to 50A for input AC-in-1
- From 3,7A to 30A for input AC-in-2
Factory setting: the maximum value (50A and 30A).
In case of parallel units the range the minimum and maximum values have to be multiplied by the number of parallel units.
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 Quattro switches to inverter operation practically without interruption. The
Quattro 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 generating sets is too unstable and distorted for using this setting – the Quattro would
continually switch to inverter operation. For this reason, the setting can be turned off. The Quattro will then respond less quickly
to voltage deviations on AC-in-1 or AC-in-2. 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 Quattro 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, 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.
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.
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). Not adjustable with DIP
switches.
Auxiliary AC output (AC-out-2)
Besides the uninterruptable output (AC-out-1), 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.
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