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The ‘Input Frequency Range’ setting on your MultiPlus-II 230V determines the range of AC input frequencies that the unit can accept and synchronize with. Here’s what you need to know:
Function of Input Frequency Range:
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This setting allows the MultiPlus-II to connect to an AC source, such as the grid or a generator, and synchronize its output frequency with the input frequency.
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The inverter will only synchronize with and pass through AC input frequencies that fall within this specified range.
Default Range:
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By default, the MultiPlus-II is set to accept an input frequency range of 45 – 65 Hz, which accommodates the standard frequencies of 50 Hz and 60 Hz used globally.
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This range covers the typical variances that might occur in grid frequency or from generators which do not always output a perfect 50 Hz or 60 Hz.
Adjusting the Range:
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You can adjust the input frequency range to be fixed at either 50 Hz or 60 Hz, or you can leave it at the default range to automatically accept both standard frequencies and any frequencies in between.
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To make adjustments, you’ll require the Interface MK3-USB (Interface MK3-USB) and either the VEConfigure tools software or the VictronConnect app.
When to Adjust:
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If you’re connected to a stable grid or a high-quality generator, you may not need to adjust this setting from the default range.
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If you’re using a power source with a known fixed frequency, setting a fixed input frequency can ensure more stable operation.
Changing the Setting:
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Connect the MK3-USB interface between the MultiPlus-II and your computer.
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Open the VEConfigure tools software or the VictronConnect app and select the MultiPlus-II.
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Navigate to the settings where you can find ‘Input Frequency Range’ and select your desired frequency setting.
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Save the settings and ensure they’re properly applied to the MultiPlus-II.
Testing After Adjustment:
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After adjustment, test the MultiPlus-II with the AC input source to ensure it synchronizes properly and the output frequency matches the input as expected.
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