the input range is adjustable for 50, 60 or 45Hz-65Hz. Once I apply all settings and connect the 120V AC @ 50Hz, then the MultiPlus-II does not accept the input. When I apply a source @ 60Hz the unit connects and starts to charge the battery.
After confirming the settings, I find that the frequency setting of 50Hz is not applied anymore and seems to revert to the default of 60Hz despite setting it to accept a wide range of 45Hz to 65Hz.
I am aware that for this unit, the output is fixed at 60Hz, when in inverter mode, but should it not follow the input frequency when connected?
This leads to my question: Why would it not accept an input at 50Hz?
The last test source was from a Quattro 5000VA 120V set to 50Hz. I also tried our grid (220VAC 50Hz) with a step-down transformer. (220 to 110AC)
At 50Hz the inverter will not accept the input. When setting the Quattro to 60Hz, all works 100%.
Yes, I have tried charger mode only. I did notice that when using Ve.Config the option to set the frequency does not exist like it does with the 230VAC MultiPlus-II units. See below sample of a MultiPlus-II 230VAC
Thank you for confirming that, so as per manual the output is fixed and not adjustable, BUT it should accept a wide input range?
In our application we are happy with a 60Hz during inverter mode, however we do need the system to synchronize to 50Hz when an input is applied at 50Hz.
Is this perhaps a limitation of only the 120V AC models?
