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VFD question - Which input terminals for single phase ?

Thank you Mike - L1 and N it is indeed .
I was trying to decipher it from the schematic, but failed to read the bottom of the page - My bad

Tom...... needing better reading glasses
 
It might not actually matter, but just in case, do what they say.

Whether or not it matters has only to do with how the VFD derives the control power that it uses to power up its own internal electronics. You can either tap off of the incoming AC supply ahead of the rectifier, and then use a separate Switch Mode Power Supply (SMPS) board inside of the VFD to create that power, or you can tap off of the un-filtered side of the DC bus (after the rectifier but before the smoothing capacitors) with a DC-DC converter. The DC-DC converters are OK for small amounts of power, but get expensive as requirements go up, that's why some older and/or larger drives used AC SPMS power supplies. But most of the new smaller-cheaper-faster drives sold now became smaller-cheaper by doing things like getting rid of accessory boards, such as an SMPS, and doing everything on one PCB, which means a DC-DC power supply circuit. So that means they are tapped off of the DC side of the rectifier and therefore it makes no difference which of the input terminals you use, because you are just converting to DC first anyway.
 
hitachi historically has used logic supply from L1 to L3 and continues to do so.

sometimes on little itsy bitsy drives like this they add N by L3 terminal, but that has confused more people than it helped: there is often also a N- terminal for dc bus minus and hook to it by mistake and smoke ur drive..
 
Yep.

And it's only "N" (Neutral) for a 220V single phase supply if you are not in North America, because elsewhere, 380Y220V 3 phase systems are 220V from L to N, that's why it is marked that way. For us, technically it would be L1 and L2 on a 240V single phase system, but then that means that because that drive ALREADY says L1, L2 and L3 on the line terminals for 3 phase, the instructions for single phase would need to say "For 240V North American single phase system connection, use L1 for L1, but terminate L2 onto L3". THAT would be confusing too.
 








 
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