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he On/Off/Charger Only switch is basically your control for how the MultiPlus-II works.
Flip it to ‘on’, and you’re fully operational – both the inverter and charger are active.
The inverter converts DC to AC, lighting up the ‘inverter on’ LED, and it’ll pass AC through if it’s getting power. When it’s not needed because AC is coming in, the charger takes over to top up your batteries, indicated by the charging mode LEDs.
Switch to ‘charger only’, and the inverter steps back. This setting is all about charging your batteries without the inverter jumping into action every time there’s a dip in the mains power. It’s a good way to keep your batteries from draining when you don’t need to invert power, like during maintenance or when you’ve got stable grid power.
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Technically, the On/Off/Charger Only switch on the MultiPlus-II is a control mechanism for the inverter and charger operations.
In the ‘on’ position, the unit is fully operational: the inverter is active, ready to convert DC to AC power, and the corresponding LED indicator will be illuminated.
If AC input is available and within the acceptable voltage range, it will pass through to the output, the inverter will be in standby mode, and the charger will commence the charging process, indicated by the ‘bulk’, ‘absorption’, or ‘float’ LED status.
When the switch is in the ‘charger only’ position, the inverter function is disabled, and the device operates solely as a battery charger, with AC input passing through to the output.
This mode ensures that AC power is provided to the ‘AC out’ terminal without engaging the inverter circuitry. It’s particularly useful in scenarios where the preservation of battery charge is paramount, as it prevents the inverter from depleting the battery if the AC input is lost, thereby prioritizing battery longevity and efficiency.
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In the ‘on’ position, the system is fully active, allowing the inverter to convert the DC supply to AC power.
When AC voltage is present at the ‘AC in’ terminal and is within acceptable parameters, this voltage is directly passed through to the ‘AC out’ terminal, bypassing the inverter, which is then placed in standby mode.
Concurrently, the system’s charger initiates the charging cycle for the connected batteries, signified by the illuminated ‘bulk’, ‘absorption’, or ‘float’ LEDs, each indicating the current charging phase based on the battery’s condition.
When set to ‘charger only’, the system disengages the inverter circuitry while maintaining the charger function, assuming AC input is available. This mode ensures that voltage from the ‘AC in’ terminal is supplied to the ‘AC out’ terminal without inverter intervention, thus preventing battery depletion from inverter activation during fluctuations or absence of AC input.
This mode is crucial for maintaining battery charge by avoiding unnecessary inverter operation, especially during stable grid supply conditions or specific maintenance scenarios.
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