MultiPlus-II 2x120V Battery type The standard setting is the most suitable for Victron Gel Deep Discharge, Gel Exide A200, and tubular plate stationary batteries (OPzS). This setting can also be used for many other batteries: e.g. Victron AGM Deep Discharge and other AGM batteries, and many types of flat-plate flooded batteries. With VEConfigure the charge algorithm can be adjusted to charge any battery type (Nickel Cadmium batteries, Lithium-ion batteries). Absorption time In case of the standard-setting ‘Four-stage adaptive with BatterySafe mode’ the absortion time depends on the bulk time (adaptive charge curve), so that the battery is optimally charged.
Automatic equalisation charging This setting is intended for flooded tubular plate traction or OPzS batteries. During the absorption stage, the voltage limit increases to 2.83V/cell (34V for a 24V battery and 68V for a 48V battery) once the charge current has dropped to less than 10% of the set maximum current. Not adjustable with DIP switches. See ’tubular plate traction battery charge curve’ in VEConfigure. Storage voltage, Repeated Absorption Time, Absorption Repeat Interval See Section 2 [3] . Bulk Protection When this setting is ‘on’, the bulk charging time is limited to 10 hours. A longer charging time could indicate a system error (e.g. a battery cell short-circuit).
AC input current limit These are the current limit settings for which PowerControl and PowerAssist come into operation: Factory setting: 30A UPS feature The output voltage of some small generator sets is too unstable and distorted for using this setting – the MultiPlus-II would continually switch to inverter operation. For this reason, the setting can be turned off. The MultiPlus-II will then respond less quickly to AC input voltage deviations. The switchover time to inverter operation is consequently slightly longer, but most equipment (most computers, clocks or household equipment) is not adversely impacted.
If this setting is ‘on’ and AC on the input fails, the MultiPlus-II switches to inverter operation practically without interruption. Recommendation: Turn the UPS feature off if the MultiPlus-II 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, engine rpm is reduced in case of low load: 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-II 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. Weak AC 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.
Page 18 Configuration Model PowerAssist setting range, grid in-line topology PowerAssist setting range, grid parallel topology with external 100A current transformer 3000VA 9.5 - 50A 9.5 - 50A 4k 9.5 - 50A 9.5 - 50A 5000VA 10.9 - 100A 10.9 - 100A